Added extra needed files

1 files changed, 243 insertions, 0 deletions

diff --git a/mesalib/src/gallium/auxiliary/util/u_simple_shaders.c b/mesalib/src/gallium/auxiliary/util/u_simple_shaders.c
new file mode 100644
index 000000000..141763190
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_simple_shaders.c
@@ -0,0 +1,243 @@
+/**************************************************************************

+ *

+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.

+ * All Rights Reserved.

+ * Copyright 2009 Marek Olšák <maraeo@gmail.com>

+ *

+ * 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, sub license, 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 (including the

+ * next paragraph) 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 NON-INFRINGEMENT.

+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.

+ *

+ **************************************************************************/

+

+/**

+ * @file

+ * Simple vertex/fragment shader generators.

+ *  

+ * @author Brian Paul

+           Marek Olšák

+ */

+

+

+#include "pipe/p_context.h"

+#include "pipe/p_shader_tokens.h"

+#include "pipe/p_state.h"

+#include "util/u_simple_shaders.h"

+#include "util/u_debug.h"

+#include "tgsi/tgsi_ureg.h"

+

+

+

+/**

+ * Make simple vertex pass-through shader.

+ * \param num_attribs  number of attributes to pass through

+ * \param semantic_names  array of semantic names for each attribute

+ * \param semantic_indexes  array of semantic indexes for each attribute

+ */

+void *

+util_make_vertex_passthrough_shader(struct pipe_context *pipe,

+                                    uint num_attribs,

+                                    const uint *semantic_names,

+                                    const uint *semantic_indexes)

+{

+   struct ureg_program *ureg;

+   uint i;

+

+   ureg = ureg_create( TGSI_PROCESSOR_VERTEX );

+   if (ureg == NULL)

+      return NULL;

+

+   for (i = 0; i < num_attribs; i++) {

+      struct ureg_src src;

+      struct ureg_dst dst;

+

+      src = ureg_DECL_vs_input( ureg, i );

+      

+      dst = ureg_DECL_output( ureg,

+                              semantic_names[i],

+                              semantic_indexes[i]);

+      

+      ureg_MOV( ureg, dst, src );

+   }

+

+   ureg_END( ureg );

+

+   return ureg_create_shader_and_destroy( ureg, pipe );

+}

+

+

+/**

+ * Make simple fragment texture shader:

+ *  IMM {0,0,0,1}                         // (if writemask != 0xf)

+ *  MOV OUT[0], IMM[0]                    // (if writemask != 0xf)

+ *  TEX OUT[0].writemask, IN[0], SAMP[0], 2D;

+ *  END;

+ *

+ * \param tex_target  one of PIPE_TEXTURE_x

+ * \parma interp_mode  either TGSI_INTERPOLATE_LINEAR or PERSPECTIVE

+ * \param writemask  mask of TGSI_WRITEMASK_x

+ */

+void *

+util_make_fragment_tex_shader_writemask(struct pipe_context *pipe,

+                                        unsigned tex_target,

+                                        unsigned interp_mode,

+                                        unsigned writemask )

+{

+   struct ureg_program *ureg;

+   struct ureg_src sampler;

+   struct ureg_src tex;

+   struct ureg_dst out;

+

+   assert(interp_mode == TGSI_INTERPOLATE_LINEAR ||

+          interp_mode == TGSI_INTERPOLATE_PERSPECTIVE);

+

+   ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );

+   if (ureg == NULL)

+      return NULL;

+   

+   sampler = ureg_DECL_sampler( ureg, 0 );

+

+   tex = ureg_DECL_fs_input( ureg, 

+                             TGSI_SEMANTIC_GENERIC, 0, 

+                             interp_mode );

+

+   out = ureg_DECL_output( ureg, 

+                           TGSI_SEMANTIC_COLOR,

+                           0 );

+

+   if (writemask != TGSI_WRITEMASK_XYZW) {

+      struct ureg_src imm = ureg_imm4f( ureg, 0, 0, 0, 1 );

+

+      ureg_MOV( ureg, out, imm );

+   }

+

+   ureg_TEX( ureg, 

+             ureg_writemask(out, writemask),

+             tex_target, tex, sampler );

+   ureg_END( ureg );

+

+   return ureg_create_shader_and_destroy( ureg, pipe );

+}

+

+

+/**

+ * Make a simple fragment shader that sets the output color to a color

+ * taken from a texture.

+ * \param tex_target  one of PIPE_TEXTURE_x

+ */

+void *

+util_make_fragment_tex_shader(struct pipe_context *pipe, unsigned tex_target,

+                              unsigned interp_mode)

+{

+   return util_make_fragment_tex_shader_writemask( pipe,

+                                                   tex_target,

+                                                   interp_mode,

+                                                   TGSI_WRITEMASK_XYZW );

+}

+

+

+/**

+ * Make a simple fragment texture shader which reads an X component from

+ * a texture and writes it as depth.

+ */

+void *

+util_make_fragment_tex_shader_writedepth(struct pipe_context *pipe,

+                                         unsigned tex_target,

+                                         unsigned interp_mode)

+{

+   struct ureg_program *ureg;

+   struct ureg_src sampler;

+   struct ureg_src tex;

+   struct ureg_dst out, depth;

+   struct ureg_src imm;

+

+   ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );

+   if (ureg == NULL)

+      return NULL;

+

+   sampler = ureg_DECL_sampler( ureg, 0 );

+

+   tex = ureg_DECL_fs_input( ureg,

+                             TGSI_SEMANTIC_GENERIC, 0,

+                             interp_mode );

+

+   out = ureg_DECL_output( ureg,

+                           TGSI_SEMANTIC_COLOR,

+                           0 );

+

+   depth = ureg_DECL_output( ureg,

+                             TGSI_SEMANTIC_POSITION,

+                             0 );

+

+   imm = ureg_imm4f( ureg, 0, 0, 0, 1 );

+

+   ureg_MOV( ureg, out, imm );

+

+   ureg_TEX( ureg,

+             ureg_writemask(depth, TGSI_WRITEMASK_Z),

+             tex_target, tex, sampler );

+   ureg_END( ureg );

+

+   return ureg_create_shader_and_destroy( ureg, pipe );

+}

+

+

+/**

+ * Make simple fragment color pass-through shader.

+ */

+void *

+util_make_fragment_passthrough_shader(struct pipe_context *pipe)

+{

+   return util_make_fragment_cloneinput_shader(pipe, 1, TGSI_SEMANTIC_COLOR,

+                                               TGSI_INTERPOLATE_PERSPECTIVE);

+}

+

+

+/**

+ * Make a fragment shader that copies the input color to N output colors.

+ */

+void *

+util_make_fragment_cloneinput_shader(struct pipe_context *pipe, int num_cbufs,

+                                     int input_semantic,

+                                     int input_interpolate)

+{

+   struct ureg_program *ureg;

+   struct ureg_src src;

+   struct ureg_dst dst[PIPE_MAX_COLOR_BUFS];

+   int i;

+

+   assert(num_cbufs <= PIPE_MAX_COLOR_BUFS);

+

+   ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );

+   if (ureg == NULL)

+      return NULL;

+

+   src = ureg_DECL_fs_input( ureg, input_semantic, 0,

+                             input_interpolate );

+

+   for (i = 0; i < num_cbufs; i++)

+      dst[i] = ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, i );

+

+   for (i = 0; i < num_cbufs; i++)

+      ureg_MOV( ureg, dst[i], src );

+

+   ureg_END( ureg );

+

+   return ureg_create_shader_and_destroy( ureg, pipe );

+}