libxcb mesa xserver xkeyboard-config git update 15 Feb 2013

xserver          commit 90642948cc78834d95f7a3bddaac7ff77b68ed7e
libxcb           commit 0dd8f8d26a758bc385e79d9239bf6ef2e3d7bf13
xkeyboard-config commit 067b0e4fd8d4fe707d86b24ae83bcacb61624231
mesa             commit 6dbe94c12cd1b3b912a7083055178e0dfd7372af

10 files changed, 186 insertions, 64 deletions

diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp
index 49093d88f..92065f5b7 100644
--- a/mesalib/src/glsl/ast_to_hir.cpp
+++ b/mesalib/src/glsl/ast_to_hir.cpp
@@ -2821,30 +2821,46 @@ ast_declarator_list::hir(exec_list *instructions,
 	 }
       }
 
-      /* Integer vertex outputs must be qualified with 'flat'.
+      /* Integer fragment inputs must be qualified with 'flat'.  In GLSL ES,
+       * so must integer vertex outputs.
        *
-       * From section 4.3.6 of the GLSL 1.30 spec:
-       *    "If a vertex output is a signed or unsigned integer or integer
-       *    vector, then it must be qualified with the interpolation qualifier
-       *    flat."
-       *
-       * From section 4.3.4 of the GLSL 3.00 ES spec:
+       * From section 4.3.4 ("Inputs") of the GLSL 1.50 spec:
        *    "Fragment shader inputs that are signed or unsigned integers or
        *    integer vectors must be qualified with the interpolation qualifier
        *    flat."
        *
-       * Since vertex outputs and fragment inputs must have matching
-       * qualifiers, these two requirements are equivalent.
+       * From section 4.3.4 ("Input Variables") of the GLSL 3.00 ES spec:
+       *    "Fragment shader inputs that are, or contain, signed or unsigned
+       *    integers or integer vectors must be qualified with the
+       *    interpolation qualifier flat."
+       *
+       * From section 4.3.6 ("Output Variables") of the GLSL 3.00 ES spec:
+       *    "Vertex shader outputs that are, or contain, signed or unsigned
+       *    integers or integer vectors must be qualified with the
+       *    interpolation qualifier flat."
+       *
+       * Note that prior to GLSL 1.50, this requirement applied to vertex
+       * outputs rather than fragment inputs.  That creates problems in the
+       * presence of geometry shaders, so we adopt the GLSL 1.50 rule for all
+       * desktop GL shaders.  For GLSL ES shaders, we follow the spec and
+       * apply the restriction to both vertex outputs and fragment inputs.
+       *
+       * Note also that the desktop GLSL specs are missing the text "or
+       * contain"; this is presumably an oversight, since there is no
+       * reasonable way to interpolate a fragment shader input that contains
+       * an integer.
        */
-      if (state->is_version(130, 300)
-          && state->target == vertex_shader
-          && state->current_function == NULL
-          && var->type->is_integer()
-          && var->mode == ir_var_shader_out
-          && var->interpolation != INTERP_QUALIFIER_FLAT) {
-
-         _mesa_glsl_error(&loc, state, "If a vertex output is an integer, "
-                          "then it must be qualified with 'flat'");
+      if (state->is_version(130, 300) &&
+          var->type->contains_integer() &&
+          var->interpolation != INTERP_QUALIFIER_FLAT &&
+          ((state->target == fragment_shader && var->mode == ir_var_shader_in)
+           || (state->target == vertex_shader && var->mode == ir_var_shader_out
+               && state->es_shader))) {
+         const char *var_type = (state->target == vertex_shader) ?
+            "vertex output" : "fragment input";
+         _mesa_glsl_error(&loc, state, "If a %s is (or contains) "
+                          "an integer, then it must be qualified with 'flat'",
+                          var_type);
       }
 
 
@@ -3967,6 +3983,47 @@ ast_iteration_statement::hir(exec_list *instructions,
 }
 
 
+/**
+ * Determine if the given type is valid for establishing a default precision
+ * qualifier.
+ *
+ * From GLSL ES 3.00 section 4.5.4 ("Default Precision Qualifiers"):
+ *
+ *     "The precision statement
+ *
+ *         precision precision-qualifier type;
+ *
+ *     can be used to establish a default precision qualifier. The type field
+ *     can be either int or float or any of the sampler types, and the
+ *     precision-qualifier can be lowp, mediump, or highp."
+ *
+ * GLSL ES 1.00 has similar language.  GLSL 1.30 doesn't allow precision
+ * qualifiers on sampler types, but this seems like an oversight (since the
+ * intention of including these in GLSL 1.30 is to allow compatibility with ES
+ * shaders).  So we allow int, float, and all sampler types regardless of GLSL
+ * version.
+ */
+static bool
+is_valid_default_precision_type(const struct _mesa_glsl_parse_state *state,
+                                const char *type_name)
+{
+   const struct glsl_type *type = state->symbols->get_type(type_name);
+   if (type == NULL)
+      return false;
+
+   switch (type->base_type) {
+   case GLSL_TYPE_INT:
+   case GLSL_TYPE_FLOAT:
+      /* "int" and "float" are valid, but vectors and matrices are not. */
+      return type->vector_elements == 1 && type->matrix_columns == 1;
+   case GLSL_TYPE_SAMPLER:
+      return true;
+   default:
+      return false;
+   }
+}
+
+
 ir_rvalue *
 ast_type_specifier::hir(exec_list *instructions,
 			  struct _mesa_glsl_parse_state *state)
@@ -4007,11 +4064,10 @@ ast_type_specifier::hir(exec_list *instructions,
                           "arrays");
          return NULL;
       }
-      if (strcmp(this->type_name, "float") != 0 &&
-	  strcmp(this->type_name, "int") != 0) {
+      if (!is_valid_default_precision_type(state, this->type_name)) {
          _mesa_glsl_error(&loc, state,
                           "default precision statements apply only to types "
-                          "float and int");
+                          "float, int, and sampler types");
          return NULL;
       }
 
diff --git a/mesalib/src/glsl/glsl_types.cpp b/mesalib/src/glsl/glsl_types.cpp
index 3b066d099..82aeb84ed 100644
--- a/mesalib/src/glsl/glsl_types.cpp
+++ b/mesalib/src/glsl/glsl_types.cpp
@@ -158,6 +158,24 @@ glsl_type::contains_sampler() const
    }
 }
 
+
+bool
+glsl_type::contains_integer() const
+{
+   if (this->is_array()) {
+      return this->fields.array->contains_integer();
+   } else if (this->is_record()) {
+      for (unsigned int i = 0; i < this->length; i++) {
+	 if (this->fields.structure[i].type->contains_integer())
+	    return true;
+      }
+      return false;
+   } else {
+      return this->is_integer();
+   }
+}
+
+
 gl_texture_index
 glsl_type::sampler_index() const
 {
diff --git a/mesalib/src/glsl/glsl_types.h b/mesalib/src/glsl/glsl_types.h
index b0db2bf11..8cfd8dd02 100644
--- a/mesalib/src/glsl/glsl_types.h
+++ b/mesalib/src/glsl/glsl_types.h
@@ -360,6 +360,12 @@ struct glsl_type {
    }
 
    /**
+    * Query whether or not type is an integral type, or for struct and array
+    * types, contains an integral type.
+    */
+   bool contains_integer() const;
+
+   /**
     * Query whether or not a type is a float type
     */
    bool is_float() const
diff --git a/mesalib/src/glsl/ir.h b/mesalib/src/glsl/ir.h
index efd80dad8..1e09988e5 100644
--- a/mesalib/src/glsl/ir.h
+++ b/mesalib/src/glsl/ir.h
@@ -1448,8 +1448,8 @@ enum ir_texture_opcode {
 class ir_texture : public ir_rvalue {
 public:
    ir_texture(enum ir_texture_opcode op)
-      : op(op), coordinate(NULL), projector(NULL), shadow_comparitor(NULL),
-        offset(NULL)
+      : op(op), sampler(NULL), coordinate(NULL), projector(NULL),
+        shadow_comparitor(NULL), offset(NULL)
    {
       this->ir_type = ir_type_texture;
    }
diff --git a/mesalib/src/mesa/main/shaderapi.c b/mesalib/src/mesa/main/shaderapi.c
index 2590abe7e..be6946798 100644
--- a/mesalib/src/mesa/main/shaderapi.c
+++ b/mesalib/src/mesa/main/shaderapi.c
@@ -207,6 +207,8 @@ attach_shader(struct gl_context *ctx, GLuint program, GLuint shader)
    struct gl_shader *sh;
    GLuint i, n;
 
+   const bool same_type_disallowed = _mesa_is_gles(ctx);
+
    shProg = _mesa_lookup_shader_program_err(ctx, program, "glAttachShader");
    if (!shProg)
       return;
@@ -227,6 +229,18 @@ attach_shader(struct gl_context *ctx, GLuint program, GLuint shader)
           */
          _mesa_error(ctx, GL_INVALID_OPERATION, "glAttachShader");
          return;
+      } else if (same_type_disallowed &&
+                 shProg->Shaders[i]->Type == sh->Type) {
+        /* Shader with the same type is already attached to this program,
+         * OpenGL ES 2.0 and 3.0 specs say:
+         *
+         *      "Multiple shader objects of the same type may not be attached
+         *      to a single program object. [...] The error INVALID_OPERATION
+         *      is generated if [...] another shader object of the same type
+         *      as shader is already attached to program."
+         */
+         _mesa_error(ctx, GL_INVALID_OPERATION, "glAttachShader");
+         return;
       }
    }
 
diff --git a/mesalib/src/mesa/state_tracker/st_atom_texture.c b/mesalib/src/mesa/state_tracker/st_atom_texture.c
index 28327bc14..fc2d69013 100644
--- a/mesalib/src/mesa/state_tracker/st_atom_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_atom_texture.c
@@ -234,11 +234,17 @@ update_single_texture(struct st_context *st,
    }
 
    /* Determine the format of the texture sampler view */
-   view_format = stObj->pt->format;
+   if (texObj->Target == GL_TEXTURE_BUFFER) {
+      view_format =
+         st_mesa_format_to_pipe_format(stObj->base._BufferObjectFormat);
+   }
+   else {
+      view_format = stObj->pt->format;
 
-   /* If sRGB decoding is off, use the linear format */
-   if (samp->sRGBDecode == GL_SKIP_DECODE_EXT) {
-      view_format = util_format_linear(view_format);
+      /* If sRGB decoding is off, use the linear format */
+      if (samp->sRGBDecode == GL_SKIP_DECODE_EXT) {
+         view_format = util_format_linear(view_format);
+      }
    }
 
    /* if sampler view has changed dereference it */
diff --git a/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c b/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
index ba4f17a3d..e282bf98d 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_drawpixels.c
@@ -484,19 +484,29 @@ make_texture(struct st_context *st,
    gl_format mformat;
    struct pipe_resource *pt;
    enum pipe_format pipeFormat;
-   GLenum baseInternalFormat, intFormat;
-
-   intFormat = internal_format(ctx, format, type);
-   baseInternalFormat = _mesa_base_tex_format(ctx, intFormat);
+   GLenum baseInternalFormat;
 
    /* Choose a pixel format for the temp texture which will hold the
     * image to draw.
     */
-   pipeFormat = st_choose_format(st, intFormat, format, type,
-                                 PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
-                                 FALSE);
-   assert(pipeFormat != PIPE_FORMAT_NONE);
-   mformat = st_pipe_format_to_mesa_format(pipeFormat);
+   pipeFormat = st_choose_matching_format(pipe->screen, PIPE_BIND_SAMPLER_VIEW,
+                                          format, type, unpack->SwapBytes);
+
+   if (pipeFormat != PIPE_FORMAT_NONE) {
+      mformat = st_pipe_format_to_mesa_format(pipeFormat);
+      baseInternalFormat = _mesa_get_format_base_format(mformat);
+   }
+   else {
+      /* Use the generic approach. */
+      GLenum intFormat = internal_format(ctx, format, type);
+
+      baseInternalFormat = _mesa_base_tex_format(ctx, intFormat);
+      pipeFormat = st_choose_format(st, intFormat, format, type,
+                                    PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
+                                    FALSE);
+      assert(pipeFormat != PIPE_FORMAT_NONE);
+      mformat = st_pipe_format_to_mesa_format(pipeFormat);
+   }
 
    pixels = _mesa_map_pbo_source(ctx, unpack, pixels);
    if (!pixels)
diff --git a/mesalib/src/mesa/state_tracker/st_cb_texture.c b/mesalib/src/mesa/state_tracker/st_cb_texture.c
index ac70e9292..f8ff024db 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_texture.c
@@ -560,32 +560,6 @@ st_CompressedTexImage(struct gl_context *ctx, GLuint dims,
 }
 
 
-static enum pipe_format
-choose_matching_format(struct pipe_screen *screen, unsigned bind,
-                       GLenum format, GLenum type, GLboolean swapBytes)
-{
-   gl_format mesa_format;
-
-   for (mesa_format = 1; mesa_format < MESA_FORMAT_COUNT; mesa_format++) {
-      if (_mesa_get_format_color_encoding(mesa_format) == GL_SRGB) {
-         continue;
-      }
-
-      if (_mesa_format_matches_format_and_type(mesa_format, format, type,
-                                               swapBytes)) {
-         enum pipe_format format = st_mesa_format_to_pipe_format(mesa_format);
-
-         if (format &&
-             screen->is_format_supported(screen, format, PIPE_TEXTURE_2D, 0,
-                                         bind)) {
-            return format;
-         }
-         /* It's unlikely to find 2 matching Mesa formats. */
-         break;
-      }
-   }
-   return PIPE_FORMAT_NONE;
-}
 
 
 /**
@@ -683,8 +657,8 @@ st_GetTexImage(struct gl_context * ctx,
 
    /* Choose the destination format by finding the best match
     * for the format+type combo. */
-   dst_format = choose_matching_format(screen, bind, format, type,
-                                       ctx->Pack.SwapBytes);
+   dst_format = st_choose_matching_format(screen, bind, format, type,
+					  ctx->Pack.SwapBytes);
 
    if (dst_format == PIPE_FORMAT_NONE) {
       GLenum dst_glformat;
diff --git a/mesalib/src/mesa/state_tracker/st_format.c b/mesalib/src/mesa/state_tracker/st_format.c
index 02969b995..5fd44e76d 100644
--- a/mesalib/src/mesa/state_tracker/st_format.c
+++ b/mesalib/src/mesa/state_tracker/st_format.c
@@ -1675,6 +1675,41 @@ st_choose_renderbuffer_format(struct st_context *st,
 
 
 /**
+ * Given an OpenGL user-requested format and type, and swapBytes state,
+ * return the format which exactly matches those parameters, so that
+ * a memcpy-based transfer can be done.
+ *
+ * If no format is supported, return PIPE_FORMAT_NONE.
+ */
+enum pipe_format
+st_choose_matching_format(struct pipe_screen *screen, unsigned bind,
+			  GLenum format, GLenum type, GLboolean swapBytes)
+{
+   gl_format mesa_format;
+
+   for (mesa_format = 1; mesa_format < MESA_FORMAT_COUNT; mesa_format++) {
+      if (_mesa_get_format_color_encoding(mesa_format) == GL_SRGB) {
+         continue;
+      }
+
+      if (_mesa_format_matches_format_and_type(mesa_format, format, type,
+                                               swapBytes)) {
+         enum pipe_format format = st_mesa_format_to_pipe_format(mesa_format);
+
+         if (format &&
+             screen->is_format_supported(screen, format, PIPE_TEXTURE_2D, 0,
+                                         bind)) {
+            return format;
+         }
+         /* It's unlikely to find 2 matching Mesa formats. */
+         break;
+      }
+   }
+   return PIPE_FORMAT_NONE;
+}
+
+
+/**
  * Called via ctx->Driver.ChooseTextureFormat().
  */
 gl_format
diff --git a/mesalib/src/mesa/state_tracker/st_format.h b/mesalib/src/mesa/state_tracker/st_format.h
index aee624d24..3db409b74 100644
--- a/mesalib/src/mesa/state_tracker/st_format.h
+++ b/mesalib/src/mesa/state_tracker/st_format.h
@@ -57,6 +57,9 @@ extern enum pipe_format
 st_choose_renderbuffer_format(struct st_context *st,
                               GLenum internalFormat, unsigned sample_count);
 
+extern enum pipe_format
+st_choose_matching_format(struct pipe_screen *screen, unsigned bind,
+			  GLenum format, GLenum type, GLboolean swapBytes);
 
 extern gl_format
 st_ChooseTextureFormat(struct gl_context * ctx, GLenum target,