mesa git update 28 okt 2011

14 files changed, 1280 insertions, 1194 deletions

diff --git a/mesalib/docs/GL3.txt b/mesalib/docs/GL3.txt
index 31add7403..54099451a 100644
--- a/mesalib/docs/GL3.txt
+++ b/mesalib/docs/GL3.txt
@@ -13,6 +13,7 @@ Feature                                               Status
 GL 3.0:
 
 GLSL 1.30 (GL_EXT_gpu_shader4, etc.)                  started
+glBindFragDataLocation, glGetFragDataLocation         not started
 Conditional rendering (GL_NV_conditional_render)      DONE (swrast, softpipe, i965)
 Map buffer subranges (GL_ARB_map_buffer_range)        DONE
 Clamping controls (GL_ARB_color_buffer_float)         DONE
@@ -24,14 +25,12 @@ Framebuffer objects (GL_EXT_framebuffer_object)       DONE
 Half-float                                            DONE
 Multisample blit                                      DONE
 Non-normalized Integer texture/framebuffer formats    ~50% done
-1D/2D Texture arrays                                  core Mesa, swrast done
+1D/2D Texture arrays                                  DONE (gallium, swrast)
 Packed depth/stencil formats                          DONE
 Per-buffer blend and masks (GL_EXT_draw_buffers2)     DONE
 GL_EXT_texture_compression_rgtc                       DONE (swrast, gallium r600)
 Red and red/green texture formats                     DONE (swrast, i965, gallium)
 Transform feedback (GL_EXT_transform_feedback)        ~50% done
-   glBindFragDataLocation, glGetFragDataLocation,
-   glBindBufferRange, glBindBufferBase commands
 Vertex array objects (GL_APPLE_vertex_array_object)   DONE
 sRGB framebuffer format (GL_EXT_framebuffer_sRGB)     core GL done (i965, gallium), GLX todo
 glClearBuffer commands                                DONE
@@ -39,7 +38,7 @@ glGetStringi command                                  DONE
 glTexParameterI, glGetTexParameterI commands          DONE
 glVertexAttribI commands                              DONE (but converts int
                                                             values to floats)
-Depth format cube textures                            0% done
+Depth format cube textures                            not started
 GLX_ARB_create_context (GLX 1.4 is required)          not started
 
 
@@ -99,7 +98,7 @@ GL_ARB_tessellation_shader                           not started
 GL_ARB_texture_buffer_object_rgb32                   not started
 GL_ARB_texture_cube_map_array                        not started
 GL_ARB_texture_gather                                not started
-GL_ARB_transform_feedback2                           not started
+GL_ARB_transform_feedback2                           started
 GL_ARB_transform_feedback3                           not started
 
 
diff --git a/mesalib/src/gallium/auxiliary/util/u_network.c b/mesalib/src/gallium/auxiliary/util/u_network.c
index d135b590f..45b3691f9 100644
--- a/mesalib/src/gallium/auxiliary/util/u_network.c
+++ b/mesalib/src/gallium/auxiliary/util/u_network.c
@@ -1,188 +1,191 @@
-

-#include "pipe/p_compiler.h"

-#include "util/u_network.h"

-#include "util/u_debug.h"

-

-#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)

-#  include <winsock2.h>

-#  include <windows.h>

-#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE) || defined(PIPE_OS_CYGWIN)

-#  include <sys/socket.h>

-#  include <netinet/in.h>

-#  include <unistd.h>

-#  include <fcntl.h>

-#  include <netdb.h>

-#else

-#  warning "No socket implementation"

-#endif

-

-boolean

-u_socket_init()

-{

-#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)

-   WORD wVersionRequested;

-   WSADATA wsaData;

-   int err;

-

-   /* Use the MAKEWORD(lowbyte, highbyte) macro declared in Windef.h */

-   wVersionRequested = MAKEWORD(1, 1);

-

-   err = WSAStartup(wVersionRequested, &wsaData);

-   if (err != 0) {

-      debug_printf("WSAStartup failed with error: %d\n", err);

-      return FALSE;

-   }

-   return TRUE;

-#elif defined(PIPE_HAVE_SOCKETS)

-   return TRUE;

-#else

-   return FALSE;

-#endif

-}

-

-void

-u_socket_stop()

-{

-#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)

-   WSACleanup();

-#endif

-}

-

-void

-u_socket_close(int s)

-{

-   if (s < 0)

-      return;

-

-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)

-   shutdown(s, SHUT_RDWR);

-   close(s);

-#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)

-   shutdown(s, SD_BOTH);

-   closesocket(s);

-#else

-   assert(0);

-#endif

-}

-

-int u_socket_accept(int s)

-{

-#if defined(PIPE_HAVE_SOCKETS)

-   return accept(s, NULL, NULL);

-#else

-   return -1;

-#endif

-}

-

-int

-u_socket_send(int s, void *data, size_t size)

-{

-#if defined(PIPE_HAVE_SOCKETS)

-   return send(s, data, size, 0);

-#else

-   return -1;

-#endif

-}

-

-int

-u_socket_peek(int s, void *data, size_t size)

-{

-#if defined(PIPE_HAVE_SOCKETS)

-   return recv(s, data, size, MSG_PEEK);

-#else

-   return -1;

-#endif

-}

-

-int

-u_socket_recv(int s, void *data, size_t size)

-{

-#if defined(PIPE_HAVE_SOCKETS)

-   return recv(s, data, size, 0);

-#else

-   return -1;

-#endif

-}

-

-int

-u_socket_connect(const char *hostname, uint16_t port)

-{

-#if defined(PIPE_HAVE_SOCKETS)

-   int s;

-   struct sockaddr_in sa;

-   struct hostent *host = NULL;

-

-   memset(&sa, 0, sizeof(struct sockaddr_in));

-   host = gethostbyname(hostname);

-   if (!host)

-      return -1;

-

-   memcpy((char *)&sa.sin_addr,host->h_addr_list[0],host->h_length);

-   sa.sin_family= host->h_addrtype;

-   sa.sin_port = htons(port);

-

-   s = socket(host->h_addrtype, SOCK_STREAM, IPPROTO_TCP);

-   if (s < 0)

-      return -1;

-

-   if (connect(s, (struct sockaddr *)&sa, sizeof(sa))) {

-      u_socket_close(s);

-      return -1;

-   }

-

-   return s;

-#else

-   assert(0);

-   return -1;

-#endif

-}

-

-int

-u_socket_listen_on_port(uint16_t portnum)

-{

-#if defined(PIPE_HAVE_SOCKETS)

-   int s;

-   struct sockaddr_in sa;

-   memset(&sa, 0, sizeof(struct sockaddr_in));

-

-   sa.sin_family = AF_INET;

-   sa.sin_port = htons(portnum);

-

-   s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

-   if (s < 0)

-      return -1;

-

-   if (bind(s, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)) == -1) {

-      u_socket_close(s);

-      return -1;

-   }

-

-   listen(s, 0);

-

-   return s;

-#else

-   assert(0);

-   return -1;

-#endif

-}

-

-void

-u_socket_block(int s, boolean block)

-{

-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)

-   int old = fcntl(s, F_GETFL, 0);

-   if (old == -1)

-      return;

-

-   /* TODO obey block */

-   if (block)

-      fcntl(s, F_SETFL, old & ~O_NONBLOCK);

-   else

-      fcntl(s, F_SETFL, old | O_NONBLOCK);

-#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)

-   u_long iMode = block ? 0 : 1;

-   ioctlsocket(s, FIONBIO, &iMode);

-#else

-   assert(0);

-#endif

-}

+
+#include "pipe/p_compiler.h"
+#include "util/u_network.h"
+#include "util/u_debug.h"
+
+#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+#  include <winsock2.h>
+#  include <windows.h>
+#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || \
+   defined(PIPE_OS_APPLE) || defined(PIPE_OS_CYGWIN) || defined(PIPE_OS_SOLARIS)
+#  include <sys/socket.h>
+#  include <netinet/in.h>
+#  include <unistd.h>
+#  include <fcntl.h>
+#  include <netdb.h>
+#else
+#  warning "No socket implementation"
+#endif
+
+boolean
+u_socket_init()
+{
+#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+   WORD wVersionRequested;
+   WSADATA wsaData;
+   int err;
+
+   /* Use the MAKEWORD(lowbyte, highbyte) macro declared in Windef.h */
+   wVersionRequested = MAKEWORD(1, 1);
+
+   err = WSAStartup(wVersionRequested, &wsaData);
+   if (err != 0) {
+      debug_printf("WSAStartup failed with error: %d\n", err);
+      return FALSE;
+   }
+   return TRUE;
+#elif defined(PIPE_HAVE_SOCKETS)
+   return TRUE;
+#else
+   return FALSE;
+#endif
+}
+
+void
+u_socket_stop()
+{
+#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+   WSACleanup();
+#endif
+}
+
+void
+u_socket_close(int s)
+{
+   if (s < 0)
+      return;
+
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) \
+    || defined(PIPE_OS_APPLE) || defined(PIPE_OS_SOLARIS)
+   shutdown(s, SHUT_RDWR);
+   close(s);
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+   shutdown(s, SD_BOTH);
+   closesocket(s);
+#else
+   assert(0);
+#endif
+}
+
+int u_socket_accept(int s)
+{
+#if defined(PIPE_HAVE_SOCKETS)
+   return accept(s, NULL, NULL);
+#else
+   return -1;
+#endif
+}
+
+int
+u_socket_send(int s, void *data, size_t size)
+{
+#if defined(PIPE_HAVE_SOCKETS)
+   return send(s, data, size, 0);
+#else
+   return -1;
+#endif
+}
+
+int
+u_socket_peek(int s, void *data, size_t size)
+{
+#if defined(PIPE_HAVE_SOCKETS)
+   return recv(s, data, size, MSG_PEEK);
+#else
+   return -1;
+#endif
+}
+
+int
+u_socket_recv(int s, void *data, size_t size)
+{
+#if defined(PIPE_HAVE_SOCKETS)
+   return recv(s, data, size, 0);
+#else
+   return -1;
+#endif
+}
+
+int
+u_socket_connect(const char *hostname, uint16_t port)
+{
+#if defined(PIPE_HAVE_SOCKETS)
+   int s;
+   struct sockaddr_in sa;
+   struct hostent *host = NULL;
+
+   memset(&sa, 0, sizeof(struct sockaddr_in));
+   host = gethostbyname(hostname);
+   if (!host)
+      return -1;
+
+   memcpy((char *)&sa.sin_addr,host->h_addr_list[0],host->h_length);
+   sa.sin_family= host->h_addrtype;
+   sa.sin_port = htons(port);
+
+   s = socket(host->h_addrtype, SOCK_STREAM, IPPROTO_TCP);
+   if (s < 0)
+      return -1;
+
+   if (connect(s, (struct sockaddr *)&sa, sizeof(sa))) {
+      u_socket_close(s);
+      return -1;
+   }
+
+   return s;
+#else
+   assert(0);
+   return -1;
+#endif
+}
+
+int
+u_socket_listen_on_port(uint16_t portnum)
+{
+#if defined(PIPE_HAVE_SOCKETS)
+   int s;
+   struct sockaddr_in sa;
+   memset(&sa, 0, sizeof(struct sockaddr_in));
+
+   sa.sin_family = AF_INET;
+   sa.sin_port = htons(portnum);
+
+   s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+   if (s < 0)
+      return -1;
+
+   if (bind(s, (struct sockaddr *)&sa, sizeof(struct sockaddr_in)) == -1) {
+      u_socket_close(s);
+      return -1;
+   }
+
+   listen(s, 0);
+
+   return s;
+#else
+   assert(0);
+   return -1;
+#endif
+}
+
+void
+u_socket_block(int s, boolean block)
+{
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) \
+    || defined(PIPE_OS_APPLE) || defined(PIPE_OS_SOLARIS)
+   int old = fcntl(s, F_GETFL, 0);
+   if (old == -1)
+      return;
+
+   /* TODO obey block */
+   if (block)
+      fcntl(s, F_SETFL, old & ~O_NONBLOCK);
+   else
+      fcntl(s, F_SETFL, old | O_NONBLOCK);
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+   u_long iMode = block ? 0 : 1;
+   ioctlsocket(s, FIONBIO, &iMode);
+#else
+   assert(0);
+#endif
+}
diff --git a/mesalib/src/gallium/auxiliary/util/u_network.h b/mesalib/src/gallium/auxiliary/util/u_network.h
index 5bf18c542..61fe9a3c6 100644
--- a/mesalib/src/gallium/auxiliary/util/u_network.h
+++ b/mesalib/src/gallium/auxiliary/util/u_network.h
@@ -1,24 +1,25 @@
-

-#ifndef _U_NETWORK_H_

-#define _U_NETWORK_H_

-

-#include "pipe/p_compiler.h"

-

-#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)

-#  define PIPE_HAVE_SOCKETS

-#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || defined(PIPE_OS_APPLE)

-#  define PIPE_HAVE_SOCKETS

-#endif

-

-boolean u_socket_init(void);

-void u_socket_stop(void);

-void u_socket_close(int s);

-int u_socket_listen_on_port(uint16_t portnum);

-int u_socket_accept(int s);

-int u_socket_connect(const char *host, uint16_t port);

-int u_socket_send(int s, void *data, size_t size);

-int u_socket_peek(int s, void *data, size_t size);

-int u_socket_recv(int s, void *data, size_t size);

-void u_socket_block(int s, boolean block);

-

-#endif

+
+#ifndef _U_NETWORK_H_
+#define _U_NETWORK_H_
+
+#include "pipe/p_compiler.h"
+
+#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+#  define PIPE_HAVE_SOCKETS
+#elif defined(PIPE_OS_LINUX) || defined(PIPE_OS_HAIKU) || \
+    defined(PIPE_OS_APPLE) || defined(PIPE_OS_SOLARIS)
+#  define PIPE_HAVE_SOCKETS
+#endif
+
+boolean u_socket_init(void);
+void u_socket_stop(void);
+void u_socket_close(int s);
+int u_socket_listen_on_port(uint16_t portnum);
+int u_socket_accept(int s);
+int u_socket_connect(const char *host, uint16_t port);
+int u_socket_send(int s, void *data, size_t size);
+int u_socket_peek(int s, void *data, size_t size);
+int u_socket_recv(int s, void *data, size_t size);
+void u_socket_block(int s, boolean block);
+
+#endif
diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index 70afb67df..fa6206e5e 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -1962,11 +1962,13 @@ apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
    }
 
    if (qual->flags.q.flat)
-      var->interpolation = ir_var_flat;
+      var->interpolation = INTERP_QUALIFIER_FLAT;
    else if (qual->flags.q.noperspective)
-      var->interpolation = ir_var_noperspective;
+      var->interpolation = INTERP_QUALIFIER_NOPERSPECTIVE;
+   else if (qual->flags.q.smooth)
+      var->interpolation = INTERP_QUALIFIER_SMOOTH;
    else
-      var->interpolation = ir_var_smooth;
+      var->interpolation = INTERP_QUALIFIER_NONE;
 
    var->pixel_center_integer = qual->flags.q.pixel_center_integer;
    var->origin_upper_left = qual->flags.q.origin_upper_left;
@@ -2630,7 +2632,7 @@ ast_declarator_list::hir(exec_list *instructions,
           && state->current_function == NULL
           && var->type->is_integer()
           && var->mode == ir_var_out
-          && var->interpolation != ir_var_flat) {
+          && var->interpolation != INTERP_QUALIFIER_FLAT) {
 
          _mesa_glsl_error(&loc, state, "If a vertex output is an integer, "
                           "then it must be qualified with 'flat'");
diff --git a/mesalib/src/glsl/ir.cpp b/mesalib/src/glsl/ir.cpp
index d968890a2..ef7300e65 100644
--- a/mesalib/src/glsl/ir.cpp
+++ b/mesalib/src/glsl/ir.cpp
@@ -1320,7 +1320,7 @@ ir_swizzle::variable_referenced() const
 ir_variable::ir_variable(const struct glsl_type *type, const char *name,
 			 ir_variable_mode mode)
    : max_array_access(0), read_only(false), centroid(false), invariant(false),
-     mode(mode), interpolation(ir_var_smooth)
+     mode(mode), interpolation(INTERP_QUALIFIER_NONE)
 {
    this->ir_type = ir_type_variable;
    this->type = type;
@@ -1343,9 +1343,10 @@ const char *
 ir_variable::interpolation_string() const
 {
    switch (this->interpolation) {
-   case ir_var_smooth:        return "smooth";
-   case ir_var_flat:          return "flat";
-   case ir_var_noperspective: return "noperspective";
+   case INTERP_QUALIFIER_NONE:          return "no";
+   case INTERP_QUALIFIER_SMOOTH:        return "smooth";
+   case INTERP_QUALIFIER_FLAT:          return "flat";
+   case INTERP_QUALIFIER_NOPERSPECTIVE: return "noperspective";
    }
 
    assert(!"Should not get here.");
@@ -1353,6 +1354,21 @@ ir_variable::interpolation_string() const
 }
 
 
+glsl_interp_qualifier
+ir_variable::determine_interpolation_mode(bool flat_shade)
+{
+   if (this->interpolation != INTERP_QUALIFIER_NONE)
+      return (glsl_interp_qualifier) this->interpolation;
+   int location = this->location;
+   bool is_gl_Color =
+      location == FRAG_ATTRIB_COL0 || location == FRAG_ATTRIB_COL1;
+   if (flat_shade && is_gl_Color)
+      return INTERP_QUALIFIER_FLAT;
+   else
+      return INTERP_QUALIFIER_SMOOTH;
+}
+
+
 ir_function_signature::ir_function_signature(const glsl_type *return_type)
    : return_type(return_type), is_defined(false), _function(NULL)
 {
diff --git a/mesalib/src/glsl/ir.h b/mesalib/src/glsl/ir.h
index b707634ea..404d4cffa 100644
--- a/mesalib/src/glsl/ir.h
+++ b/mesalib/src/glsl/ir.h
@@ -34,6 +34,7 @@
 #include "list.h"
 #include "ir_visitor.h"
 #include "ir_hierarchical_visitor.h"
+#include "main/mtypes.h"
 
 /**
  * \defgroup IR Intermediate representation nodes
@@ -227,12 +228,6 @@ enum ir_variable_mode {
    ir_var_temporary	/**< Temporary variable generated during compilation. */
 };
 
-enum ir_variable_interpolation {
-   ir_var_smooth = 0,
-   ir_var_flat,
-   ir_var_noperspective
-};
-
 /**
  * \brief Layout qualifiers for gl_FragDepth.
  *
@@ -288,11 +283,26 @@ public:
     * \return The string that would be used in a shader to specify \c
     * mode will be returned.
     *
+    * This function is used to generate error messages of the form "shader
+    * uses %s interpolation qualifier", so in the case where there is no
+    * interpolation qualifier, it returns "no".
+    *
     * This function should only be used on a shader input or output variable.
     */
    const char *interpolation_string() const;
 
    /**
+    * Determine how this variable should be interpolated based on its
+    * interpolation qualifier (if present), whether it is gl_Color or
+    * gl_SecondaryColor, and whether flatshading is enabled in the current GL
+    * state.
+    *
+    * The return value will always be either INTERP_QUALIFIER_SMOOTH,
+    * INTERP_QUALIFIER_NOPERSPECTIVE, or INTERP_QUALIFIER_FLAT.
+    */
+   glsl_interp_qualifier determine_interpolation_mode(bool flat_shade);
+
+   /**
     * Delcared name of the variable
     */
    const char *name;
@@ -1679,7 +1689,8 @@ extern bool
 ir_has_call(ir_instruction *ir);
 
 extern void
-do_set_program_inouts(exec_list *instructions, struct gl_program *prog);
+do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
+                      bool is_fragment_shader);
 
 extern char *
 prototype_string(const glsl_type *return_type, const char *name,
diff --git a/mesalib/src/glsl/ir_reader.cpp b/mesalib/src/glsl/ir_reader.cpp
index afb06b3be..e3a3ed97d 100644
--- a/mesalib/src/glsl/ir_reader.cpp
+++ b/mesalib/src/glsl/ir_reader.cpp
@@ -405,11 +405,11 @@ ir_reader::read_declaration(s_expression *expr)
       } else if (strcmp(qualifier->value(), "inout") == 0) {
 	 var->mode = ir_var_inout;
       } else if (strcmp(qualifier->value(), "smooth") == 0) {
-	 var->interpolation = ir_var_smooth;
+	 var->interpolation = INTERP_QUALIFIER_SMOOTH;
       } else if (strcmp(qualifier->value(), "flat") == 0) {
-	 var->interpolation = ir_var_flat;
+	 var->interpolation = INTERP_QUALIFIER_FLAT;
       } else if (strcmp(qualifier->value(), "noperspective") == 0) {
-	 var->interpolation = ir_var_noperspective;
+	 var->interpolation = INTERP_QUALIFIER_NOPERSPECTIVE;
       } else {
 	 ir_read_error(expr, "unknown qualifier: %s", qualifier->value());
 	 return NULL;
diff --git a/mesalib/src/glsl/ir_set_program_inouts.cpp b/mesalib/src/glsl/ir_set_program_inouts.cpp
index ae3ef74c7..8c2bc30d6 100644
--- a/mesalib/src/glsl/ir_set_program_inouts.cpp
+++ b/mesalib/src/glsl/ir_set_program_inouts.cpp
@@ -26,6 +26,8 @@
  *
  * Sets the InputsRead and OutputsWritten of Mesa programs.
  *
+ * Additionally, for fragment shaders, sets the InterpQualifier array.
+ *
  * Mesa programs (gl_program, not gl_shader_program) have a set of
  * flags indicating which varyings are read and written.  Computing
  * which are actually read from some sort of backend code can be
@@ -42,9 +44,11 @@
 
 class ir_set_program_inouts_visitor : public ir_hierarchical_visitor {
 public:
-   ir_set_program_inouts_visitor(struct gl_program *prog)
+   ir_set_program_inouts_visitor(struct gl_program *prog,
+                                 bool is_fragment_shader)
    {
       this->prog = prog;
+      this->is_fragment_shader = is_fragment_shader;
       this->ht = hash_table_ctor(0,
 				 hash_table_pointer_hash,
 				 hash_table_pointer_compare);
@@ -61,10 +65,12 @@ public:
 
    struct gl_program *prog;
    struct hash_table *ht;
+   bool is_fragment_shader;
 };
 
 static void
-mark(struct gl_program *prog, ir_variable *var, int offset, int len)
+mark(struct gl_program *prog, ir_variable *var, int offset, int len,
+     bool is_fragment_shader)
 {
    /* As of GLSL 1.20, varyings can only be floats, floating-point
     * vectors or matrices, or arrays of them.  For Mesa programs using
@@ -75,12 +81,19 @@ mark(struct gl_program *prog, ir_variable *var, int offset, int len)
     */
 
    for (int i = 0; i < len; i++) {
-      if (var->mode == ir_var_in)
-	 prog->InputsRead |= BITFIELD64_BIT(var->location + offset + i);
-      else if (var->mode == ir_var_system_value)
-         prog->SystemValuesRead |= (1 << (var->location + offset + i));
-      else
-	 prog->OutputsWritten |= BITFIELD64_BIT(var->location + offset + i);
+      GLbitfield64 bitfield = BITFIELD64_BIT(var->location + offset + i);
+      if (var->mode == ir_var_in) {
+	 prog->InputsRead |= bitfield;
+         if (is_fragment_shader) {
+            gl_fragment_program *fprog = (gl_fragment_program *) prog;
+            fprog->InterpQualifier[var->location + offset + i] =
+               (glsl_interp_qualifier) var->interpolation;
+         }
+      } else if (var->mode == ir_var_system_value) {
+         prog->SystemValuesRead |= bitfield;
+      } else {
+	 prog->OutputsWritten |= bitfield;
+      }
    }
 }
 
@@ -93,9 +106,11 @@ ir_set_program_inouts_visitor::visit(ir_dereference_variable *ir)
 
    if (ir->type->is_array()) {
       mark(this->prog, ir->var, 0,
-	   ir->type->length * ir->type->fields.array->matrix_columns);
+	   ir->type->length * ir->type->fields.array->matrix_columns,
+           this->is_fragment_shader);
    } else {
-      mark(this->prog, ir->var, 0, ir->type->matrix_columns);
+      mark(this->prog, ir->var, 0, ir->type->matrix_columns,
+           this->is_fragment_shader);
    }
 
    return visit_continue;
@@ -121,7 +136,8 @@ ir_set_program_inouts_visitor::visit_enter(ir_dereference_array *ir)
 	 width = deref_var->type->fields.array->matrix_columns;
       }
 
-      mark(this->prog, var, index->value.i[0] * width, width);
+      mark(this->prog, var, index->value.i[0] * width, width,
+           this->is_fragment_shader);
       return visit_continue_with_parent;
    }
 
@@ -151,12 +167,17 @@ ir_set_program_inouts_visitor::visit_enter(ir_function_signature *ir)
 }
 
 void
-do_set_program_inouts(exec_list *instructions, struct gl_program *prog)
+do_set_program_inouts(exec_list *instructions, struct gl_program *prog,
+                      bool is_fragment_shader)
 {
-   ir_set_program_inouts_visitor v(prog);
+   ir_set_program_inouts_visitor v(prog, is_fragment_shader);
 
    prog->InputsRead = 0;
    prog->OutputsWritten = 0;
    prog->SystemValuesRead = 0;
+   if (is_fragment_shader) {
+      memset(((gl_fragment_program *) prog)->InterpQualifier, 0,
+             sizeof(((gl_fragment_program *) prog)->InterpQualifier));
+   }
    visit_list_elements(&v, instructions);
 }
diff --git a/mesalib/src/mesa/main/api_exec.c b/mesalib/src/mesa/main/api_exec.c
index 93214dd0b..1bc39db55 100644
--- a/mesalib/src/mesa/main/api_exec.c
+++ b/mesalib/src/mesa/main/api_exec.c
@@ -469,6 +469,7 @@ _mesa_create_exec_table(void)
    SET_DepthBoundsEXT(exec, _mesa_DepthBoundsEXT);
 
    /* 352. GL_EXT_transform_feedback */
+   /* ARB 93. GL_ARB_transform_feedback2 */
    _mesa_init_transform_feedback_dispatch(exec);
 
    /* 364. GL_EXT_provoking_vertex */
diff --git a/mesalib/src/mesa/main/dlist.c b/mesalib/src/mesa/main/dlist.c
index d901bddf8..52548fdc1 100644
--- a/mesalib/src/mesa/main/dlist.c
+++ b/mesalib/src/mesa/main/dlist.c
@@ -69,6 +69,9 @@
 #if FEATURE_NV_vertex_program || FEATURE_NV_fragment_program
 #include "nvprogram.h"
 #endif
+#if FEATURE_EXT_transform_feedback
+#include "transformfeedback.h"
+#endif
 
 #include "math/m_matrix.h"
 
@@ -6272,15 +6275,6 @@ save_EndTransformFeedback(void)
 }
 
 static void GLAPIENTRY
-save_TransformFeedbackVaryings(GLuint program, GLsizei count,
-                               const GLchar **varyings, GLenum bufferMode)
-{
-   GET_CURRENT_CONTEXT(ctx);
-   _mesa_problem(ctx,
-                 "glTransformFeedbackVarying() display list support not done");
-}
-
-static void GLAPIENTRY
 save_BindTransformFeedback(GLenum target, GLuint name)
 {
    GET_CURRENT_CONTEXT(ctx);
@@ -10321,9 +10315,14 @@ _mesa_create_save_table(void)
 #endif
 
 #if FEATURE_EXT_transform_feedback
+   /* These are not compiled into display lists: */
+   SET_BindBufferBaseEXT(table, _mesa_BindBufferBase);
+   SET_BindBufferOffsetEXT(table, _mesa_BindBufferOffsetEXT);
+   SET_BindBufferRangeEXT(table, _mesa_BindBufferRange);
+   SET_TransformFeedbackVaryingsEXT(table, _mesa_TransformFeedbackVaryings);
+   /* These are: */
    SET_BeginTransformFeedbackEXT(table, save_BeginTransformFeedback);
    SET_EndTransformFeedbackEXT(table, save_EndTransformFeedback);
-   SET_TransformFeedbackVaryingsEXT(table, save_TransformFeedbackVaryings);
    SET_BindTransformFeedback(table, save_BindTransformFeedback);
    SET_PauseTransformFeedback(table, save_PauseTransformFeedback);
    SET_ResumeTransformFeedback(table, save_ResumeTransformFeedback);
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index 411768641..aa3fa6aec 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -1790,6 +1790,22 @@ typedef enum
 } gl_system_value;
 
 
+/**
+ * The possible interpolation qualifiers that can be applied to a fragment
+ * shader input in GLSL.
+ *
+ * Note: INTERP_QUALIFIER_NONE must be 0 so that memsetting the
+ * gl_fragment_program data structure to 0 causes the default behavior.
+ */
+enum glsl_interp_qualifier
+{
+   INTERP_QUALIFIER_NONE = 0,
+   INTERP_QUALIFIER_SMOOTH,
+   INTERP_QUALIFIER_FLAT,
+   INTERP_QUALIFIER_NOPERSPECTIVE
+};
+
+
 /** Vertex and fragment instructions */
 struct prog_instruction;
 struct gl_program_parameter_list;
@@ -1890,6 +1906,13 @@ struct gl_fragment_program
    GLboolean OriginUpperLeft;
    GLboolean PixelCenterInteger;
    enum gl_frag_depth_layout FragDepthLayout;
+
+   /**
+    * GLSL interpolation qualifier associated with each fragment shader input.
+    * For inputs that do not have an interpolation qualifier specified in
+    * GLSL, the value is INTERP_QUALIFIER_NONE.
+    */
+   enum glsl_interp_qualifier InterpQualifier[FRAG_ATTRIB_MAX];
 };
 
 
diff --git a/mesalib/src/mesa/main/transformfeedback.c b/mesalib/src/mesa/main/transformfeedback.c
index 85c213552..b5fb98ecb 100644
--- a/mesalib/src/mesa/main/transformfeedback.c
+++ b/mesalib/src/mesa/main/transformfeedback.c
@@ -1,934 +1,944 @@
-/*

- * Mesa 3-D graphics library

- *

- * Copyright (C) 2010  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/*

- * Vertex transform feedback support.

- *

- * Authors:

- *   Brian Paul

- */

-

-

-#include "buffers.h"

-#include "bufferobj.h"

-#include "context.h"

-#include "hash.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-#include "transformfeedback.h"

-#include "shaderapi.h"

-#include "shaderobj.h"

-#include "main/dispatch.h"

-

-#include "program/prog_parameter.h"

-

-

-#if FEATURE_EXT_transform_feedback

-

-

-/**

- * Do reference counting of transform feedback buffers.

- */

-static void

-reference_transform_feedback_object(struct gl_transform_feedback_object **ptr,

-                                    struct gl_transform_feedback_object *obj)

-{

-   if (*ptr == obj)

-      return;

-

-   if (*ptr) {

-      /* Unreference the old object */

-      struct gl_transform_feedback_object *oldObj = *ptr;

-

-      ASSERT(oldObj->RefCount > 0);

-      oldObj->RefCount--;

-

-      if (oldObj->RefCount == 0) {

-         GET_CURRENT_CONTEXT(ctx);

-         if (ctx)

-            ctx->Driver.DeleteTransformFeedback(ctx, oldObj);

-      }

-

-      *ptr = NULL;

-   }

-   ASSERT(!*ptr);

-

-   if (obj) {

-      /* reference new object */

-      if (obj->RefCount == 0) {

-         _mesa_problem(NULL, "referencing deleted transform feedback object");

-         *ptr = NULL;

-      }

-      else {

-         obj->RefCount++;

-         *ptr = obj;

-      }

-   }

-}

-

-

-/**

- * Check if the given primitive mode (as in glBegin(mode)) is compatible

- * with the current transform feedback mode (if it's enabled).

- * This is to be called from glBegin(), glDrawArrays(), glDrawElements(), etc.

- *

- * \return GL_TRUE if the mode is OK, GL_FALSE otherwise.

- */

-GLboolean

-_mesa_validate_primitive_mode(struct gl_context *ctx, GLenum mode)

-{

-   if (ctx->TransformFeedback.CurrentObject->Active) {

-      switch (mode) {

-      case GL_POINTS:

-         return ctx->TransformFeedback.Mode == GL_POINTS;

-      case GL_LINES:

-      case GL_LINE_STRIP:

-      case GL_LINE_LOOP:

-         return ctx->TransformFeedback.Mode == GL_LINES;

-      default:

-         return ctx->TransformFeedback.Mode == GL_TRIANGLES;

-      }

-   }

-   return GL_TRUE;

-}

-

-

-/**

- * Check that all the buffer objects currently bound for transform

- * feedback actually exist.  Raise a GL_INVALID_OPERATION error if

- * any buffers are missing.

- * \return GL_TRUE for success, GL_FALSE if error

- */

-GLboolean

-_mesa_validate_transform_feedback_buffers(struct gl_context *ctx)

-{

-   /* XXX to do */

-   return GL_TRUE;

-}

-

-

-

-/**

- * Per-context init for transform feedback.

- */

-void

-_mesa_init_transform_feedback(struct gl_context *ctx)

-{

-   /* core mesa expects this, even a dummy one, to be available */

-   ASSERT(ctx->Driver.NewTransformFeedback);

-

-   ctx->TransformFeedback.DefaultObject =

-      ctx->Driver.NewTransformFeedback(ctx, 0);

-

-   assert(ctx->TransformFeedback.DefaultObject->RefCount == 1);

-

-   reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject,

-                                       ctx->TransformFeedback.DefaultObject);

-

-   assert(ctx->TransformFeedback.DefaultObject->RefCount == 2);

-

-   ctx->TransformFeedback.Objects = _mesa_NewHashTable();

-

-   _mesa_reference_buffer_object(ctx,

-                                 &ctx->TransformFeedback.CurrentBuffer,

-                                 ctx->Shared->NullBufferObj);

-}

-

-

-

-/**

- * Callback for _mesa_HashDeleteAll().

- */

-static void

-delete_cb(GLuint key, void *data, void *userData)

-{

-   struct gl_context *ctx = (struct gl_context *) userData;

-   struct gl_transform_feedback_object *obj =

-      (struct gl_transform_feedback_object *) data;

-

-   ctx->Driver.DeleteTransformFeedback(ctx, obj);

-}

-

-

-/**

- * Per-context free/clean-up for transform feedback.

- */

-void

-_mesa_free_transform_feedback(struct gl_context *ctx)

-{

-   /* core mesa expects this, even a dummy one, to be available */

-   ASSERT(ctx->Driver.NewTransformFeedback);

-

-   _mesa_reference_buffer_object(ctx,

-                                 &ctx->TransformFeedback.CurrentBuffer,

-                                 NULL);

-

-   /* Delete all feedback objects */

-   _mesa_HashDeleteAll(ctx->TransformFeedback.Objects, delete_cb, ctx);

-   _mesa_DeleteHashTable(ctx->TransformFeedback.Objects);

-

-   /* Delete the default feedback object */

-   assert(ctx->Driver.DeleteTransformFeedback);

-   ctx->Driver.DeleteTransformFeedback(ctx,

-                                       ctx->TransformFeedback.DefaultObject);

-

-   ctx->TransformFeedback.CurrentObject = NULL;

-}

-

-

-#else /* FEATURE_EXT_transform_feedback */

-

-/* forward declarations */

-static struct gl_transform_feedback_object *

-new_transform_feedback(struct gl_context *ctx, GLuint name);

-

-static void

-delete_transform_feedback(struct gl_context *ctx,

-                          struct gl_transform_feedback_object *obj);

-

-/* dummy per-context init/clean-up for transform feedback */

-void

-_mesa_init_transform_feedback(struct gl_context *ctx)

-{

-   ctx->TransformFeedback.DefaultObject = new_transform_feedback(ctx, 0);

-   ctx->TransformFeedback.CurrentObject = ctx->TransformFeedback.DefaultObject;

-   _mesa_reference_buffer_object(ctx,

-                                 &ctx->TransformFeedback.CurrentBuffer,

-                                 ctx->Shared->NullBufferObj);

-}

-

-void

-_mesa_free_transform_feedback(struct gl_context *ctx)

-{

-   _mesa_reference_buffer_object(ctx,

-                                 &ctx->TransformFeedback.CurrentBuffer,

-                                 NULL);

-   ctx->TransformFeedback.CurrentObject = NULL;

-   delete_transform_feedback(ctx, ctx->TransformFeedback.DefaultObject);

-}

-

-#endif /* FEATURE_EXT_transform_feedback */

-

-

-/** Default fallback for ctx->Driver.NewTransformFeedback() */

-static struct gl_transform_feedback_object *

-new_transform_feedback(struct gl_context *ctx, GLuint name)

-{

-   struct gl_transform_feedback_object *obj;

-   obj = CALLOC_STRUCT(gl_transform_feedback_object);

-   if (obj) {

-      obj->Name = name;

-      obj->RefCount = 1;

-   }

-   return obj;

-}

-

-/** Default fallback for ctx->Driver.DeleteTransformFeedback() */

-static void

-delete_transform_feedback(struct gl_context *ctx,

-                          struct gl_transform_feedback_object *obj)

-{

-   GLuint i;

-

-   for (i = 0; i < Elements(obj->Buffers); i++) {

-      _mesa_reference_buffer_object(ctx, &obj->Buffers[i], NULL);

-   }

-

-   free(obj);

-}

-

-

-#if FEATURE_EXT_transform_feedback

-

-

-/** Default fallback for ctx->Driver.BeginTransformFeedback() */

-static void

-begin_transform_feedback(struct gl_context *ctx, GLenum mode,

-                         struct gl_transform_feedback_object *obj)

-{

-   /* nop */

-}

-

-/** Default fallback for ctx->Driver.EndTransformFeedback() */

-static void

-end_transform_feedback(struct gl_context *ctx,

-                       struct gl_transform_feedback_object *obj)

-{

-   /* nop */

-}

-

-/** Default fallback for ctx->Driver.PauseTransformFeedback() */

-static void

-pause_transform_feedback(struct gl_context *ctx,

-                         struct gl_transform_feedback_object *obj)

-{

-   /* nop */

-}

-

-/** Default fallback for ctx->Driver.ResumeTransformFeedback() */

-static void

-resume_transform_feedback(struct gl_context *ctx,

-                          struct gl_transform_feedback_object *obj)

-{

-   /* nop */

-}

-

-/** Default fallback for ctx->Driver.DrawTransformFeedback() */

-static void

-draw_transform_feedback(struct gl_context *ctx, GLenum mode,

-                        struct gl_transform_feedback_object *obj)

-{

-   /* XXX to do */

-   /*

-    * Get number of vertices in obj's feedback buffer.

-    * Call ctx->Exec.DrawArrays(mode, 0, count);

-    */

-}

-

-

-/**

- * Plug in default device driver functions for transform feedback.

- * Most drivers will override some/all of these.

- */

-void

-_mesa_init_transform_feedback_functions(struct dd_function_table *driver)

-{

-   driver->NewTransformFeedback = new_transform_feedback;

-   driver->DeleteTransformFeedback = delete_transform_feedback;

-   driver->BeginTransformFeedback = begin_transform_feedback;

-   driver->EndTransformFeedback = end_transform_feedback;

-   driver->PauseTransformFeedback = pause_transform_feedback;

-   driver->ResumeTransformFeedback = resume_transform_feedback;

-   driver->DrawTransformFeedback = draw_transform_feedback;

-}

-

-

-void

-_mesa_init_transform_feedback_dispatch(struct _glapi_table *disp)

-{

-   SET_BeginTransformFeedbackEXT(disp, _mesa_BeginTransformFeedback);

-   SET_EndTransformFeedbackEXT(disp, _mesa_EndTransformFeedback);

-   SET_BindBufferRangeEXT(disp, _mesa_BindBufferRange);

-   SET_BindBufferBaseEXT(disp, _mesa_BindBufferBase);

-   SET_BindBufferOffsetEXT(disp, _mesa_BindBufferOffsetEXT);

-   SET_TransformFeedbackVaryingsEXT(disp, _mesa_TransformFeedbackVaryings);

-   SET_GetTransformFeedbackVaryingEXT(disp, _mesa_GetTransformFeedbackVarying);

-}

-

-

-/**

- ** Begin API functions

- **/

-

-

-void GLAPIENTRY

-_mesa_BeginTransformFeedback(GLenum mode)

-{

-   struct gl_transform_feedback_object *obj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   obj = ctx->TransformFeedback.CurrentObject;

-

-   switch (mode) {

-   case GL_POINTS:

-   case GL_LINES:

-   case GL_TRIANGLES:

-      /* legal */

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBeginTransformFeedback(mode)");

-      return;

-   }

-

-   if (obj->Active) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBeginTransformFeedback(already active)");

-      return;

-   }

-

-   obj->Active = GL_TRUE;

-   ctx->TransformFeedback.Mode = mode;

-

-   assert(ctx->Driver.BeginTransformFeedback);

-   ctx->Driver.BeginTransformFeedback(ctx, mode, obj);

-}

-

-

-void GLAPIENTRY

-_mesa_EndTransformFeedback(void)

-{

-   struct gl_transform_feedback_object *obj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   obj = ctx->TransformFeedback.CurrentObject;

-

-   if (!obj->Active) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glEndTransformFeedback(not active)");

-      return;

-   }

-

-   ctx->TransformFeedback.CurrentObject->Active = GL_FALSE;

-

-   assert(ctx->Driver.EndTransformFeedback);

-   ctx->Driver.EndTransformFeedback(ctx, obj);

-}

-

-

-/**

- * Helper used by BindBufferRange() and BindBufferBase().

- */

-static void

-bind_buffer_range(struct gl_context *ctx, GLuint index,

-                  struct gl_buffer_object *bufObj,

-                  GLintptr offset, GLsizeiptr size)

-{

-   struct gl_transform_feedback_object *obj =

-      ctx->TransformFeedback.CurrentObject;

-

-   /* The general binding point */

-   _mesa_reference_buffer_object(ctx,

-                                 &ctx->TransformFeedback.CurrentBuffer,

-                                 bufObj);

-

-   /* The per-attribute binding point */

-   _mesa_reference_buffer_object(ctx,

-                                 &obj->Buffers[index],

-                                 bufObj);

-

-   obj->BufferNames[index] = bufObj->Name;

-

-   obj->Offset[index] = offset;

-   obj->Size[index] = size;

-}

-

-

-/**

- * Specify a buffer object to receive vertex shader results.  Plus,

- * specify the starting offset to place the results, and max size.

- */

-void GLAPIENTRY

-_mesa_BindBufferRange(GLenum target, GLuint index,

-                      GLuint buffer, GLintptr offset, GLsizeiptr size)

-{

-   struct gl_transform_feedback_object *obj;

-   struct gl_buffer_object *bufObj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferRange(target)");

-      return;

-   }

-

-   obj = ctx->TransformFeedback.CurrentObject;

-

-   if (obj->Active) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindBufferRange(transform feedback active)");

-      return;

-   }

-

-   if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(index=%d)", index);

-      return;

-   }

-

-   if ((size <= 0) || (size & 0x3)) {

-      /* must be positive and multiple of four */

-      _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size%d)", (int) size);

-      return;

-   }  

-

-   if (offset & 0x3) {

-      /* must be multiple of four */

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glBindBufferRange(offset=%d)", (int) offset);

-      return;

-   }  

-

-   bufObj = _mesa_lookup_bufferobj(ctx, buffer);

-   if (!bufObj) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindBufferRange(invalid buffer=%u)", buffer);

-      return;

-   }

-

-   if (offset + size >= bufObj->Size) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glBindBufferRange(offset + size %d > buffer size %d)",

-		  (int) (offset + size), (int) (bufObj->Size));

-      return;

-   }  

-

-   bind_buffer_range(ctx, index, bufObj, offset, size);

-}

-

-

-/**

- * Specify a buffer object to receive vertex shader results.

- * As above, but start at offset = 0.

- */

-void GLAPIENTRY

-_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer)

-{

-   struct gl_transform_feedback_object *obj;

-   struct gl_buffer_object *bufObj;

-   GLsizeiptr size;

-   GET_CURRENT_CONTEXT(ctx);

-

-   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferBase(target)");

-      return;

-   }

-

-   obj = ctx->TransformFeedback.CurrentObject;

-

-   if (obj->Active) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindBufferBase(transform feedback active)");

-      return;

-   }

-

-   if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferBase(index=%d)", index);

-      return;

-   }

-

-   bufObj = _mesa_lookup_bufferobj(ctx, buffer);

-   if (!bufObj) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindBufferBase(invalid buffer=%u)", buffer);

-      return;

-   }

-

-   /* default size is the buffer size rounded down to nearest

-    * multiple of four.

-    */

-   size = bufObj->Size & ~0x3;

-

-   bind_buffer_range(ctx, index, bufObj, 0, size);

-}

-

-

-/**

- * Specify a buffer object to receive vertex shader results, plus the

- * offset in the buffer to start placing results.

- * This function is part of GL_EXT_transform_feedback, but not GL3.

- */

-void GLAPIENTRY

-_mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer,

-                          GLintptr offset)

-{

-   struct gl_transform_feedback_object *obj;

-   struct gl_buffer_object *bufObj;

-   GET_CURRENT_CONTEXT(ctx);

-   GLsizeiptr size;

-

-   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferOffsetEXT(target)");

-      return;

-   }

-

-   obj = ctx->TransformFeedback.CurrentObject;

-

-   if (obj->Active) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindBufferOffsetEXT(transform feedback active)");

-      return;

-   }

-

-   if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glBindBufferOffsetEXT(index=%d)", index);

-      return;

-   }

-

-   bufObj = _mesa_lookup_bufferobj(ctx, buffer);

-   if (!bufObj) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindBufferOffsetEXT(invalid buffer=%u)", buffer);

-      return;

-   }

-

-   /* default size is the buffer size rounded down to nearest

-    * multiple of four.

-    */

-   size = (bufObj->Size - offset) & ~0x3;

-

-   bind_buffer_range(ctx, index, bufObj, offset, size);

-}

-

-

-/**

- * This function specifies the vertex shader outputs to be written

- * to the feedback buffer(s), and in what order.

- */

-void GLAPIENTRY

-_mesa_TransformFeedbackVaryings(GLuint program, GLsizei count,

-                                const GLchar **varyings, GLenum bufferMode)

-{

-   struct gl_shader_program *shProg;

-   GLuint i;

-   GET_CURRENT_CONTEXT(ctx);

-

-   switch (bufferMode) {

-   case GL_INTERLEAVED_ATTRIBS:

-      break;

-   case GL_SEPARATE_ATTRIBS:

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glTransformFeedbackVaryings(bufferMode)");

-      return;

-   }

-

-   if (count < 0 || count > ctx->Const.MaxTransformFeedbackSeparateAttribs) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glTransformFeedbackVaryings(count=%d)", count);

-      return;

-   }

-

-   shProg = _mesa_lookup_shader_program(ctx, program);

-   if (!shProg) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glTransformFeedbackVaryings(program=%u)", program);

-      return;

-   }

-

-   /* free existing varyings, if any */

-   for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {

-      free(shProg->TransformFeedback.VaryingNames[i]);

-   }

-   free(shProg->TransformFeedback.VaryingNames);

-

-   /* allocate new memory for varying names */

-   shProg->TransformFeedback.VaryingNames =

-      (GLchar **) malloc(count * sizeof(GLchar *));

-

-   if (!shProg->TransformFeedback.VaryingNames) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTransformFeedbackVaryings()");

-      return;

-   }

-

-   /* Save the new names and the count */

-   for (i = 0; i < (GLuint) count; i++) {

-      shProg->TransformFeedback.VaryingNames[i] = _mesa_strdup(varyings[i]);

-   }

-   shProg->TransformFeedback.NumVarying = count;

-

-   shProg->TransformFeedback.BufferMode = bufferMode;

-

-   /* The varyings won't be used until shader link time */

-}

-

-

-/**

- * Get info about the vertex shader's outputs which are to be written

- * to the feedback buffer(s).

- */

-void GLAPIENTRY

-_mesa_GetTransformFeedbackVarying(GLuint program, GLuint index,

-                                  GLsizei bufSize, GLsizei *length,

-                                  GLsizei *size, GLenum *type, GLchar *name)

-{

-   const struct gl_shader_program *shProg;

-   const GLchar *varyingName;

-   GLint v;

-   GET_CURRENT_CONTEXT(ctx);

-

-   shProg = _mesa_lookup_shader_program(ctx, program);

-   if (!shProg) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glGetTransformFeedbackVaryings(program=%u)", program);

-      return;

-   }

-

-   if (index >= shProg->TransformFeedback.NumVarying) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glGetTransformFeedbackVaryings(index=%u)", index);

-      return;

-   }

-

-   varyingName = shProg->TransformFeedback.VaryingNames[index];

-

-   v = _mesa_lookup_parameter_index(shProg->Varying, -1, varyingName);

-   if (v >= 0) {

-      struct gl_program_parameter *param = &shProg->Varying->Parameters[v];

-

-      /* return the varying's name and length */

-      _mesa_copy_string(name, bufSize, length, varyingName);

-

-      /* return the datatype and value's size (in datatype units) */

-      if (type)

-         *type = param->DataType;

-      if (size)

-         *size = param->Size;

-   }

-   else {

-      name[0] = 0;

-      if (length)

-         *length = 0;

-      if (type)

-         *type = 0;

-      if (size)

-         *size = 0;

-   }

-}

-

-

-

-static struct gl_transform_feedback_object *

-lookup_transform_feedback_object(struct gl_context *ctx, GLuint name)

-{

-   if (name == 0) {

-      return ctx->TransformFeedback.DefaultObject;

-   }

-   else

-      return (struct gl_transform_feedback_object *)

-         _mesa_HashLookup(ctx->TransformFeedback.Objects, name);

-}

-

-

-/**

- * Create new transform feedback objects.   Transform feedback objects

- * encapsulate the state related to transform feedback to allow quickly

- * switching state (and drawing the results, below).

- * Part of GL_ARB_transform_feedback2.

- */

-void GLAPIENTRY

-_mesa_GenTransformFeedbacks(GLsizei n, GLuint *names)

-{

-   GLuint first;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (n < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glGenTransformFeedbacks(n < 0)");

-      return;

-   }

-

-   if (!names)

-      return;

-

-   /* we don't need contiguous IDs, but this might be faster */

-   first = _mesa_HashFindFreeKeyBlock(ctx->TransformFeedback.Objects, n);

-   if (first) {

-      GLsizei i;

-      for (i = 0; i < n; i++) {

-         struct gl_transform_feedback_object *obj

-            = ctx->Driver.NewTransformFeedback(ctx, first + i);

-         if (!obj) {

-            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks");

-            return;

-         }

-         names[i] = first + i;

-         _mesa_HashInsert(ctx->TransformFeedback.Objects, first + i, obj);

-      }

-   }

-   else {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks");

-   }

-}

-

-

-/**

- * Is the given ID a transform feedback object?

- * Part of GL_ARB_transform_feedback2.

- */

-GLboolean GLAPIENTRY

-_mesa_IsTransformFeedback(GLuint name)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);

-

-   if (name && lookup_transform_feedback_object(ctx, name))

-      return GL_TRUE;

-   else

-      return GL_FALSE;

-}

-

-

-/**

- * Bind the given transform feedback object.

- * Part of GL_ARB_transform_feedback2.

- */

-void GLAPIENTRY

-_mesa_BindTransformFeedback(GLenum target, GLuint name)

-{

-   struct gl_transform_feedback_object *obj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   if (target != GL_TRANSFORM_FEEDBACK) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindTransformFeedback(target)");

-      return;

-   }

-

-   if (ctx->TransformFeedback.CurrentObject->Active &&

-       !ctx->TransformFeedback.CurrentObject->Paused) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-              "glBindTransformFeedback(transform is active, or not paused)");

-      return;

-   }

-

-   obj = lookup_transform_feedback_object(ctx, name);

-   if (!obj) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindTransformFeedback(name=%u)", name);

-      return;

-   }

-

-   reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject,

-                                       obj);

-}

-

-

-/**

- * Delete the given transform feedback objects.

- * Part of GL_ARB_transform_feedback2.

- */

-void GLAPIENTRY

-_mesa_DeleteTransformFeedbacks(GLsizei n, const GLuint *names)

-{

-   GLint i;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (n < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteTransformFeedbacks(n < 0)");

-      return;

-   }

-

-   if (!names)

-      return;

-

-   for (i = 0; i < n; i++) {

-      if (names[i] > 0) {

-         struct gl_transform_feedback_object *obj

-            = lookup_transform_feedback_object(ctx, names[i]);

-         if (obj) {

-            if (obj->Active) {

-               _mesa_error(ctx, GL_INVALID_OPERATION,

-                           "glDeleteTransformFeedbacks(object %u is active)",

-                           names[i]);

-               return;

-            }

-            _mesa_HashRemove(ctx->TransformFeedback.Objects, names[i]);

-            /* unref, but object may not be deleted until later */

-            reference_transform_feedback_object(&obj, NULL);

-         }

-      }

-   }

-}

-

-

-/**

- * Pause transform feedback.

- * Part of GL_ARB_transform_feedback2.

- */

-void GLAPIENTRY

-_mesa_PauseTransformFeedback(void)

-{

-   struct gl_transform_feedback_object *obj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   obj = ctx->TransformFeedback.CurrentObject;

-

-   if (!obj->Active || obj->Paused) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-           "glPauseTransformFeedback(feedback not active or already paused)");

-      return;

-   }

-

-   obj->Paused = GL_TRUE;

-

-   assert(ctx->Driver.PauseTransformFeedback);

-   ctx->Driver.PauseTransformFeedback(ctx, obj);

-}

-

-

-/**

- * Resume transform feedback.

- * Part of GL_ARB_transform_feedback2.

- */

-void GLAPIENTRY

-_mesa_ResumeTransformFeedback(void)

-{

-   struct gl_transform_feedback_object *obj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   obj = ctx->TransformFeedback.CurrentObject;

-

-   if (!obj->Active || !obj->Paused) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-               "glResumeTransformFeedback(feedback not active or not paused)");

-      return;

-   }

-

-   obj->Paused = GL_FALSE;

-

-   assert(ctx->Driver.ResumeTransformFeedback);

-   ctx->Driver.ResumeTransformFeedback(ctx, obj);

-}

-

-

-/**

- * Draw the vertex data in a transform feedback object.

- * \param mode  GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc.

- * \param name  the transform feedback object

- * The number of vertices comes from the transform feedback object.

- * User still has to setup of the vertex attribute info with

- * glVertexPointer, glColorPointer, etc.

- * Part of GL_ARB_transform_feedback2.

- */

-void GLAPIENTRY

-_mesa_DrawTransformFeedback(GLenum mode, GLuint name)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   struct gl_transform_feedback_object *obj =

-      lookup_transform_feedback_object(ctx, name);

-

-   if (mode > GL_POLYGON) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glDrawTransformFeedback(mode=0x%x)", mode);

-      return;

-   }

-   if (!obj) {

-      _mesa_error(ctx, GL_INVALID_VALUE,

-                  "glDrawTransformFeedback(name = %u)", name);

-      return;

-   }

-

-   /* XXX check if EndTransformFeedback has never been called while

-    * the object was bound

-    */

-

-   assert(ctx->Driver.DrawTransformFeedback);

-   ctx->Driver.DrawTransformFeedback(ctx, mode, obj);

-}

-

-

-#endif /* FEATURE_EXT_transform_feedback */

+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2010  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*
+ * Vertex transform feedback support.
+ *
+ * Authors:
+ *   Brian Paul
+ */
+
+
+#include "buffers.h"
+#include "bufferobj.h"
+#include "context.h"
+#include "hash.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "transformfeedback.h"
+#include "shaderapi.h"
+#include "shaderobj.h"
+#include "main/dispatch.h"
+
+#include "program/prog_parameter.h"
+
+
+#if FEATURE_EXT_transform_feedback
+
+
+/**
+ * Do reference counting of transform feedback buffers.
+ */
+static void
+reference_transform_feedback_object(struct gl_transform_feedback_object **ptr,
+                                    struct gl_transform_feedback_object *obj)
+{
+   if (*ptr == obj)
+      return;
+
+   if (*ptr) {
+      /* Unreference the old object */
+      struct gl_transform_feedback_object *oldObj = *ptr;
+
+      ASSERT(oldObj->RefCount > 0);
+      oldObj->RefCount--;
+
+      if (oldObj->RefCount == 0) {
+         GET_CURRENT_CONTEXT(ctx);
+         if (ctx)
+            ctx->Driver.DeleteTransformFeedback(ctx, oldObj);
+      }
+
+      *ptr = NULL;
+   }
+   ASSERT(!*ptr);
+
+   if (obj) {
+      /* reference new object */
+      if (obj->RefCount == 0) {
+         _mesa_problem(NULL, "referencing deleted transform feedback object");
+         *ptr = NULL;
+      }
+      else {
+         obj->RefCount++;
+         *ptr = obj;
+      }
+   }
+}
+
+
+/**
+ * Check if the given primitive mode (as in glBegin(mode)) is compatible
+ * with the current transform feedback mode (if it's enabled).
+ * This is to be called from glBegin(), glDrawArrays(), glDrawElements(), etc.
+ *
+ * \return GL_TRUE if the mode is OK, GL_FALSE otherwise.
+ */
+GLboolean
+_mesa_validate_primitive_mode(struct gl_context *ctx, GLenum mode)
+{
+   if (ctx->TransformFeedback.CurrentObject->Active) {
+      switch (mode) {
+      case GL_POINTS:
+         return ctx->TransformFeedback.Mode == GL_POINTS;
+      case GL_LINES:
+      case GL_LINE_STRIP:
+      case GL_LINE_LOOP:
+         return ctx->TransformFeedback.Mode == GL_LINES;
+      default:
+         return ctx->TransformFeedback.Mode == GL_TRIANGLES;
+      }
+   }
+   return GL_TRUE;
+}
+
+
+/**
+ * Check that all the buffer objects currently bound for transform
+ * feedback actually exist.  Raise a GL_INVALID_OPERATION error if
+ * any buffers are missing.
+ * \return GL_TRUE for success, GL_FALSE if error
+ */
+GLboolean
+_mesa_validate_transform_feedback_buffers(struct gl_context *ctx)
+{
+   /* XXX to do */
+   return GL_TRUE;
+}
+
+
+
+/**
+ * Per-context init for transform feedback.
+ */
+void
+_mesa_init_transform_feedback(struct gl_context *ctx)
+{
+   /* core mesa expects this, even a dummy one, to be available */
+   ASSERT(ctx->Driver.NewTransformFeedback);
+
+   ctx->TransformFeedback.DefaultObject =
+      ctx->Driver.NewTransformFeedback(ctx, 0);
+
+   assert(ctx->TransformFeedback.DefaultObject->RefCount == 1);
+
+   reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject,
+                                       ctx->TransformFeedback.DefaultObject);
+
+   assert(ctx->TransformFeedback.DefaultObject->RefCount == 2);
+
+   ctx->TransformFeedback.Objects = _mesa_NewHashTable();
+
+   _mesa_reference_buffer_object(ctx,
+                                 &ctx->TransformFeedback.CurrentBuffer,
+                                 ctx->Shared->NullBufferObj);
+}
+
+
+
+/**
+ * Callback for _mesa_HashDeleteAll().
+ */
+static void
+delete_cb(GLuint key, void *data, void *userData)
+{
+   struct gl_context *ctx = (struct gl_context *) userData;
+   struct gl_transform_feedback_object *obj =
+      (struct gl_transform_feedback_object *) data;
+
+   ctx->Driver.DeleteTransformFeedback(ctx, obj);
+}
+
+
+/**
+ * Per-context free/clean-up for transform feedback.
+ */
+void
+_mesa_free_transform_feedback(struct gl_context *ctx)
+{
+   /* core mesa expects this, even a dummy one, to be available */
+   ASSERT(ctx->Driver.NewTransformFeedback);
+
+   _mesa_reference_buffer_object(ctx,
+                                 &ctx->TransformFeedback.CurrentBuffer,
+                                 NULL);
+
+   /* Delete all feedback objects */
+   _mesa_HashDeleteAll(ctx->TransformFeedback.Objects, delete_cb, ctx);
+   _mesa_DeleteHashTable(ctx->TransformFeedback.Objects);
+
+   /* Delete the default feedback object */
+   assert(ctx->Driver.DeleteTransformFeedback);
+   ctx->Driver.DeleteTransformFeedback(ctx,
+                                       ctx->TransformFeedback.DefaultObject);
+
+   ctx->TransformFeedback.CurrentObject = NULL;
+}
+
+
+#else /* FEATURE_EXT_transform_feedback */
+
+/* forward declarations */
+static struct gl_transform_feedback_object *
+new_transform_feedback(struct gl_context *ctx, GLuint name);
+
+static void
+delete_transform_feedback(struct gl_context *ctx,
+                          struct gl_transform_feedback_object *obj);
+
+/* dummy per-context init/clean-up for transform feedback */
+void
+_mesa_init_transform_feedback(struct gl_context *ctx)
+{
+   ctx->TransformFeedback.DefaultObject = new_transform_feedback(ctx, 0);
+   ctx->TransformFeedback.CurrentObject = ctx->TransformFeedback.DefaultObject;
+   _mesa_reference_buffer_object(ctx,
+                                 &ctx->TransformFeedback.CurrentBuffer,
+                                 ctx->Shared->NullBufferObj);
+}
+
+void
+_mesa_free_transform_feedback(struct gl_context *ctx)
+{
+   _mesa_reference_buffer_object(ctx,
+                                 &ctx->TransformFeedback.CurrentBuffer,
+                                 NULL);
+   ctx->TransformFeedback.CurrentObject = NULL;
+   delete_transform_feedback(ctx, ctx->TransformFeedback.DefaultObject);
+}
+
+#endif /* FEATURE_EXT_transform_feedback */
+
+
+/** Default fallback for ctx->Driver.NewTransformFeedback() */
+static struct gl_transform_feedback_object *
+new_transform_feedback(struct gl_context *ctx, GLuint name)
+{
+   struct gl_transform_feedback_object *obj;
+   obj = CALLOC_STRUCT(gl_transform_feedback_object);
+   if (obj) {
+      obj->Name = name;
+      obj->RefCount = 1;
+   }
+   return obj;
+}
+
+/** Default fallback for ctx->Driver.DeleteTransformFeedback() */
+static void
+delete_transform_feedback(struct gl_context *ctx,
+                          struct gl_transform_feedback_object *obj)
+{
+   GLuint i;
+
+   for (i = 0; i < Elements(obj->Buffers); i++) {
+      _mesa_reference_buffer_object(ctx, &obj->Buffers[i], NULL);
+   }
+
+   free(obj);
+}
+
+
+#if FEATURE_EXT_transform_feedback
+
+
+/** Default fallback for ctx->Driver.BeginTransformFeedback() */
+static void
+begin_transform_feedback(struct gl_context *ctx, GLenum mode,
+                         struct gl_transform_feedback_object *obj)
+{
+   /* nop */
+}
+
+/** Default fallback for ctx->Driver.EndTransformFeedback() */
+static void
+end_transform_feedback(struct gl_context *ctx,
+                       struct gl_transform_feedback_object *obj)
+{
+   /* nop */
+}
+
+/** Default fallback for ctx->Driver.PauseTransformFeedback() */
+static void
+pause_transform_feedback(struct gl_context *ctx,
+                         struct gl_transform_feedback_object *obj)
+{
+   /* nop */
+}
+
+/** Default fallback for ctx->Driver.ResumeTransformFeedback() */
+static void
+resume_transform_feedback(struct gl_context *ctx,
+                          struct gl_transform_feedback_object *obj)
+{
+   /* nop */
+}
+
+/** Default fallback for ctx->Driver.DrawTransformFeedback() */
+static void
+draw_transform_feedback(struct gl_context *ctx, GLenum mode,
+                        struct gl_transform_feedback_object *obj)
+{
+   /* XXX to do */
+   /*
+    * Get number of vertices in obj's feedback buffer.
+    * Call ctx->Exec.DrawArrays(mode, 0, count);
+    */
+}
+
+
+/**
+ * Plug in default device driver functions for transform feedback.
+ * Most drivers will override some/all of these.
+ */
+void
+_mesa_init_transform_feedback_functions(struct dd_function_table *driver)
+{
+   driver->NewTransformFeedback = new_transform_feedback;
+   driver->DeleteTransformFeedback = delete_transform_feedback;
+   driver->BeginTransformFeedback = begin_transform_feedback;
+   driver->EndTransformFeedback = end_transform_feedback;
+   driver->PauseTransformFeedback = pause_transform_feedback;
+   driver->ResumeTransformFeedback = resume_transform_feedback;
+   driver->DrawTransformFeedback = draw_transform_feedback;
+}
+
+
+void
+_mesa_init_transform_feedback_dispatch(struct _glapi_table *disp)
+{
+   /* EXT_transform_feedback */
+   SET_BeginTransformFeedbackEXT(disp, _mesa_BeginTransformFeedback);
+   SET_EndTransformFeedbackEXT(disp, _mesa_EndTransformFeedback);
+   SET_BindBufferRangeEXT(disp, _mesa_BindBufferRange);
+   SET_BindBufferBaseEXT(disp, _mesa_BindBufferBase);
+   SET_BindBufferOffsetEXT(disp, _mesa_BindBufferOffsetEXT);
+   SET_TransformFeedbackVaryingsEXT(disp, _mesa_TransformFeedbackVaryings);
+   SET_GetTransformFeedbackVaryingEXT(disp, _mesa_GetTransformFeedbackVarying);
+   /* ARB_transform_feedback2 */
+   SET_BindTransformFeedback(disp, _mesa_BindTransformFeedback);
+   SET_DeleteTransformFeedbacks(disp, _mesa_DeleteTransformFeedbacks);
+   SET_GenTransformFeedbacks(disp, _mesa_GenTransformFeedbacks);
+   SET_IsTransformFeedback(disp, _mesa_IsTransformFeedback);
+   SET_PauseTransformFeedback(disp, _mesa_PauseTransformFeedback);
+   SET_ResumeTransformFeedback(disp, _mesa_ResumeTransformFeedback);
+   SET_DrawTransformFeedback(disp, _mesa_DrawTransformFeedback);
+}
+
+
+/**
+ ** Begin API functions
+ **/
+
+
+void GLAPIENTRY
+_mesa_BeginTransformFeedback(GLenum mode)
+{
+   struct gl_transform_feedback_object *obj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   obj = ctx->TransformFeedback.CurrentObject;
+
+   switch (mode) {
+   case GL_POINTS:
+   case GL_LINES:
+   case GL_TRIANGLES:
+      /* legal */
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBeginTransformFeedback(mode)");
+      return;
+   }
+
+   if (obj->Active) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBeginTransformFeedback(already active)");
+      return;
+   }
+
+   obj->Active = GL_TRUE;
+   ctx->TransformFeedback.Mode = mode;
+
+   assert(ctx->Driver.BeginTransformFeedback);
+   ctx->Driver.BeginTransformFeedback(ctx, mode, obj);
+}
+
+
+void GLAPIENTRY
+_mesa_EndTransformFeedback(void)
+{
+   struct gl_transform_feedback_object *obj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   obj = ctx->TransformFeedback.CurrentObject;
+
+   if (!obj->Active) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glEndTransformFeedback(not active)");
+      return;
+   }
+
+   ctx->TransformFeedback.CurrentObject->Active = GL_FALSE;
+
+   assert(ctx->Driver.EndTransformFeedback);
+   ctx->Driver.EndTransformFeedback(ctx, obj);
+}
+
+
+/**
+ * Helper used by BindBufferRange() and BindBufferBase().
+ */
+static void
+bind_buffer_range(struct gl_context *ctx, GLuint index,
+                  struct gl_buffer_object *bufObj,
+                  GLintptr offset, GLsizeiptr size)
+{
+   struct gl_transform_feedback_object *obj =
+      ctx->TransformFeedback.CurrentObject;
+
+   /* The general binding point */
+   _mesa_reference_buffer_object(ctx,
+                                 &ctx->TransformFeedback.CurrentBuffer,
+                                 bufObj);
+
+   /* The per-attribute binding point */
+   _mesa_reference_buffer_object(ctx,
+                                 &obj->Buffers[index],
+                                 bufObj);
+
+   obj->BufferNames[index] = bufObj->Name;
+
+   obj->Offset[index] = offset;
+   obj->Size[index] = size;
+}
+
+
+/**
+ * Specify a buffer object to receive vertex shader results.  Plus,
+ * specify the starting offset to place the results, and max size.
+ */
+void GLAPIENTRY
+_mesa_BindBufferRange(GLenum target, GLuint index,
+                      GLuint buffer, GLintptr offset, GLsizeiptr size)
+{
+   struct gl_transform_feedback_object *obj;
+   struct gl_buffer_object *bufObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferRange(target)");
+      return;
+   }
+
+   obj = ctx->TransformFeedback.CurrentObject;
+
+   if (obj->Active) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferRange(transform feedback active)");
+      return;
+   }
+
+   if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(index=%d)", index);
+      return;
+   }
+
+   if ((size <= 0) || (size & 0x3)) {
+      /* must be positive and multiple of four */
+      _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size%d)", (int) size);
+      return;
+   }  
+
+   if (offset & 0x3) {
+      /* must be multiple of four */
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glBindBufferRange(offset=%d)", (int) offset);
+      return;
+   }  
+
+   bufObj = _mesa_lookup_bufferobj(ctx, buffer);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferRange(invalid buffer=%u)", buffer);
+      return;
+   }
+
+   if (offset + size >= bufObj->Size) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glBindBufferRange(offset + size %d > buffer size %d)",
+		  (int) (offset + size), (int) (bufObj->Size));
+      return;
+   }  
+
+   bind_buffer_range(ctx, index, bufObj, offset, size);
+}
+
+
+/**
+ * Specify a buffer object to receive vertex shader results.
+ * As above, but start at offset = 0.
+ */
+void GLAPIENTRY
+_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer)
+{
+   struct gl_transform_feedback_object *obj;
+   struct gl_buffer_object *bufObj;
+   GLsizeiptr size;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferBase(target)");
+      return;
+   }
+
+   obj = ctx->TransformFeedback.CurrentObject;
+
+   if (obj->Active) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferBase(transform feedback active)");
+      return;
+   }
+
+   if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferBase(index=%d)", index);
+      return;
+   }
+
+   bufObj = _mesa_lookup_bufferobj(ctx, buffer);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferBase(invalid buffer=%u)", buffer);
+      return;
+   }
+
+   /* default size is the buffer size rounded down to nearest
+    * multiple of four.
+    */
+   size = bufObj->Size & ~0x3;
+
+   bind_buffer_range(ctx, index, bufObj, 0, size);
+}
+
+
+/**
+ * Specify a buffer object to receive vertex shader results, plus the
+ * offset in the buffer to start placing results.
+ * This function is part of GL_EXT_transform_feedback, but not GL3.
+ */
+void GLAPIENTRY
+_mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer,
+                          GLintptr offset)
+{
+   struct gl_transform_feedback_object *obj;
+   struct gl_buffer_object *bufObj;
+   GET_CURRENT_CONTEXT(ctx);
+   GLsizeiptr size;
+
+   if (target != GL_TRANSFORM_FEEDBACK_BUFFER) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferOffsetEXT(target)");
+      return;
+   }
+
+   obj = ctx->TransformFeedback.CurrentObject;
+
+   if (obj->Active) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferOffsetEXT(transform feedback active)");
+      return;
+   }
+
+   if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glBindBufferOffsetEXT(index=%d)", index);
+      return;
+   }
+
+   bufObj = _mesa_lookup_bufferobj(ctx, buffer);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindBufferOffsetEXT(invalid buffer=%u)", buffer);
+      return;
+   }
+
+   /* default size is the buffer size rounded down to nearest
+    * multiple of four.
+    */
+   size = (bufObj->Size - offset) & ~0x3;
+
+   bind_buffer_range(ctx, index, bufObj, offset, size);
+}
+
+
+/**
+ * This function specifies the vertex shader outputs to be written
+ * to the feedback buffer(s), and in what order.
+ */
+void GLAPIENTRY
+_mesa_TransformFeedbackVaryings(GLuint program, GLsizei count,
+                                const GLchar **varyings, GLenum bufferMode)
+{
+   struct gl_shader_program *shProg;
+   GLuint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   switch (bufferMode) {
+   case GL_INTERLEAVED_ATTRIBS:
+      break;
+   case GL_SEPARATE_ATTRIBS:
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glTransformFeedbackVaryings(bufferMode)");
+      return;
+   }
+
+   if (count < 0 ||
+       (bufferMode == GL_SEPARATE_ATTRIBS &&
+        count > ctx->Const.MaxTransformFeedbackSeparateAttribs)) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glTransformFeedbackVaryings(count=%d)", count);
+      return;
+   }
+
+   shProg = _mesa_lookup_shader_program(ctx, program);
+   if (!shProg) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glTransformFeedbackVaryings(program=%u)", program);
+      return;
+   }
+
+   /* free existing varyings, if any */
+   for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) {
+      free(shProg->TransformFeedback.VaryingNames[i]);
+   }
+   free(shProg->TransformFeedback.VaryingNames);
+
+   /* allocate new memory for varying names */
+   shProg->TransformFeedback.VaryingNames =
+      (GLchar **) malloc(count * sizeof(GLchar *));
+
+   if (!shProg->TransformFeedback.VaryingNames) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTransformFeedbackVaryings()");
+      return;
+   }
+
+   /* Save the new names and the count */
+   for (i = 0; i < (GLuint) count; i++) {
+      shProg->TransformFeedback.VaryingNames[i] = _mesa_strdup(varyings[i]);
+   }
+   shProg->TransformFeedback.NumVarying = count;
+
+   shProg->TransformFeedback.BufferMode = bufferMode;
+
+   /* The varyings won't be used until shader link time */
+}
+
+
+/**
+ * Get info about the vertex shader's outputs which are to be written
+ * to the feedback buffer(s).
+ */
+void GLAPIENTRY
+_mesa_GetTransformFeedbackVarying(GLuint program, GLuint index,
+                                  GLsizei bufSize, GLsizei *length,
+                                  GLsizei *size, GLenum *type, GLchar *name)
+{
+   const struct gl_shader_program *shProg;
+   const GLchar *varyingName;
+   GLint v;
+   GET_CURRENT_CONTEXT(ctx);
+
+   shProg = _mesa_lookup_shader_program(ctx, program);
+   if (!shProg) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetTransformFeedbackVaryings(program=%u)", program);
+      return;
+   }
+
+   if (index >= shProg->TransformFeedback.NumVarying) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetTransformFeedbackVaryings(index=%u)", index);
+      return;
+   }
+
+   varyingName = shProg->TransformFeedback.VaryingNames[index];
+
+   v = _mesa_lookup_parameter_index(shProg->Varying, -1, varyingName);
+   if (v >= 0) {
+      struct gl_program_parameter *param = &shProg->Varying->Parameters[v];
+
+      /* return the varying's name and length */
+      _mesa_copy_string(name, bufSize, length, varyingName);
+
+      /* return the datatype and value's size (in datatype units) */
+      if (type)
+         *type = param->DataType;
+      if (size)
+         *size = param->Size;
+   }
+   else {
+      name[0] = 0;
+      if (length)
+         *length = 0;
+      if (type)
+         *type = 0;
+      if (size)
+         *size = 0;
+   }
+}
+
+
+
+static struct gl_transform_feedback_object *
+lookup_transform_feedback_object(struct gl_context *ctx, GLuint name)
+{
+   if (name == 0) {
+      return ctx->TransformFeedback.DefaultObject;
+   }
+   else
+      return (struct gl_transform_feedback_object *)
+         _mesa_HashLookup(ctx->TransformFeedback.Objects, name);
+}
+
+
+/**
+ * Create new transform feedback objects.   Transform feedback objects
+ * encapsulate the state related to transform feedback to allow quickly
+ * switching state (and drawing the results, below).
+ * Part of GL_ARB_transform_feedback2.
+ */
+void GLAPIENTRY
+_mesa_GenTransformFeedbacks(GLsizei n, GLuint *names)
+{
+   GLuint first;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (n < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenTransformFeedbacks(n < 0)");
+      return;
+   }
+
+   if (!names)
+      return;
+
+   /* we don't need contiguous IDs, but this might be faster */
+   first = _mesa_HashFindFreeKeyBlock(ctx->TransformFeedback.Objects, n);
+   if (first) {
+      GLsizei i;
+      for (i = 0; i < n; i++) {
+         struct gl_transform_feedback_object *obj
+            = ctx->Driver.NewTransformFeedback(ctx, first + i);
+         if (!obj) {
+            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks");
+            return;
+         }
+         names[i] = first + i;
+         _mesa_HashInsert(ctx->TransformFeedback.Objects, first + i, obj);
+      }
+   }
+   else {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks");
+   }
+}
+
+
+/**
+ * Is the given ID a transform feedback object?
+ * Part of GL_ARB_transform_feedback2.
+ */
+GLboolean GLAPIENTRY
+_mesa_IsTransformFeedback(GLuint name)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+   if (name && lookup_transform_feedback_object(ctx, name))
+      return GL_TRUE;
+   else
+      return GL_FALSE;
+}
+
+
+/**
+ * Bind the given transform feedback object.
+ * Part of GL_ARB_transform_feedback2.
+ */
+void GLAPIENTRY
+_mesa_BindTransformFeedback(GLenum target, GLuint name)
+{
+   struct gl_transform_feedback_object *obj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (target != GL_TRANSFORM_FEEDBACK) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindTransformFeedback(target)");
+      return;
+   }
+
+   if (ctx->TransformFeedback.CurrentObject->Active &&
+       !ctx->TransformFeedback.CurrentObject->Paused) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+              "glBindTransformFeedback(transform is active, or not paused)");
+      return;
+   }
+
+   obj = lookup_transform_feedback_object(ctx, name);
+   if (!obj) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindTransformFeedback(name=%u)", name);
+      return;
+   }
+
+   reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject,
+                                       obj);
+}
+
+
+/**
+ * Delete the given transform feedback objects.
+ * Part of GL_ARB_transform_feedback2.
+ */
+void GLAPIENTRY
+_mesa_DeleteTransformFeedbacks(GLsizei n, const GLuint *names)
+{
+   GLint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (n < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteTransformFeedbacks(n < 0)");
+      return;
+   }
+
+   if (!names)
+      return;
+
+   for (i = 0; i < n; i++) {
+      if (names[i] > 0) {
+         struct gl_transform_feedback_object *obj
+            = lookup_transform_feedback_object(ctx, names[i]);
+         if (obj) {
+            if (obj->Active) {
+               _mesa_error(ctx, GL_INVALID_OPERATION,
+                           "glDeleteTransformFeedbacks(object %u is active)",
+                           names[i]);
+               return;
+            }
+            _mesa_HashRemove(ctx->TransformFeedback.Objects, names[i]);
+            /* unref, but object may not be deleted until later */
+            reference_transform_feedback_object(&obj, NULL);
+         }
+      }
+   }
+}
+
+
+/**
+ * Pause transform feedback.
+ * Part of GL_ARB_transform_feedback2.
+ */
+void GLAPIENTRY
+_mesa_PauseTransformFeedback(void)
+{
+   struct gl_transform_feedback_object *obj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   obj = ctx->TransformFeedback.CurrentObject;
+
+   if (!obj->Active || obj->Paused) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+           "glPauseTransformFeedback(feedback not active or already paused)");
+      return;
+   }
+
+   obj->Paused = GL_TRUE;
+
+   assert(ctx->Driver.PauseTransformFeedback);
+   ctx->Driver.PauseTransformFeedback(ctx, obj);
+}
+
+
+/**
+ * Resume transform feedback.
+ * Part of GL_ARB_transform_feedback2.
+ */
+void GLAPIENTRY
+_mesa_ResumeTransformFeedback(void)
+{
+   struct gl_transform_feedback_object *obj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   obj = ctx->TransformFeedback.CurrentObject;
+
+   if (!obj->Active || !obj->Paused) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glResumeTransformFeedback(feedback not active or not paused)");
+      return;
+   }
+
+   obj->Paused = GL_FALSE;
+
+   assert(ctx->Driver.ResumeTransformFeedback);
+   ctx->Driver.ResumeTransformFeedback(ctx, obj);
+}
+
+
+/**
+ * Draw the vertex data in a transform feedback object.
+ * \param mode  GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc.
+ * \param name  the transform feedback object
+ * The number of vertices comes from the transform feedback object.
+ * User still has to setup of the vertex attribute info with
+ * glVertexPointer, glColorPointer, etc.
+ * Part of GL_ARB_transform_feedback2.
+ */
+void GLAPIENTRY
+_mesa_DrawTransformFeedback(GLenum mode, GLuint name)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_transform_feedback_object *obj =
+      lookup_transform_feedback_object(ctx, name);
+
+   if (mode > GL_POLYGON) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glDrawTransformFeedback(mode=0x%x)", mode);
+      return;
+   }
+   if (!obj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glDrawTransformFeedback(name = %u)", name);
+      return;
+   }
+
+   /* XXX check if EndTransformFeedback has never been called while
+    * the object was bound
+    */
+
+   assert(ctx->Driver.DrawTransformFeedback);
+   ctx->Driver.DrawTransformFeedback(ctx, mode, obj);
+}
+
+#endif /* FEATURE_EXT_transform_feedback */
diff --git a/mesalib/src/mesa/program/ir_to_mesa.cpp b/mesalib/src/mesa/program/ir_to_mesa.cpp
index bdbb6b938..93563bdaa 100644
--- a/mesalib/src/mesa/program/ir_to_mesa.cpp
+++ b/mesalib/src/mesa/program/ir_to_mesa.cpp
@@ -3191,7 +3191,7 @@ get_mesa_program(struct gl_context *ctx,
    prog->Instructions = mesa_instructions;
    prog->NumInstructions = num_instructions;
 
-   do_set_program_inouts(shader->ir, prog);
+   do_set_program_inouts(shader->ir, prog, shader->Type == GL_FRAGMENT_SHADER);
    count_resources(prog);
 
    check_resources(ctx, shader_program, prog);
diff --git a/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 145bd7dcd..67a1b513b 100644
--- a/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -4966,7 +4966,7 @@ get_mesa_program(struct gl_context *ctx,
    prog->Instructions = NULL;
    prog->NumInstructions = 0;
 
-   do_set_program_inouts(shader->ir, prog);
+   do_set_program_inouts(shader->ir, prog, shader->Type == GL_FRAGMENT_SHADER);
    count_resources(v, prog);
 
    check_resources(ctx, shader_program, v, prog);