svn merge ^/branches/released .

1 files changed, 198 insertions, 0 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_atom_shader.c b/mesalib/src/mesa/state_tracker/st_atom_shader.c
new file mode 100644
index 000000000..383bb2a1b
--- /dev/null
+++ b/mesalib/src/mesa/state_tracker/st_atom_shader.c
@@ -0,0 +1,198 @@
+/**************************************************************************

+ * 

+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.

+ * 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, 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.

+ * 

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

+

+/**

+ * State validation for vertex/fragment shaders.

+ * Note that we have to delay most vertex/fragment shader translation

+ * until rendering time since the linkage between the vertex outputs and

+ * fragment inputs can vary depending on the pairing of shaders.

+ *

+ * Authors:

+ *   Brian Paul

+ */

+

+#include "main/imports.h"

+#include "main/mtypes.h"

+#include "program/program.h"

+

+#include "pipe/p_context.h"

+

+#include "util/u_simple_shaders.h"

+

+#include "cso_cache/cso_context.h"

+

+#include "st_context.h"

+#include "st_atom.h"

+#include "st_program.h"

+

+

+/**

+ * Return pointer to a pass-through fragment shader.

+ * This shader is used when a texture is missing/incomplete.

+ */

+static void *

+get_passthrough_fs(struct st_context *st)

+{

+   if (!st->passthrough_fs) {

+      st->passthrough_fs =

+         util_make_fragment_passthrough_shader(st->pipe);

+   }

+

+   return st->passthrough_fs;

+}

+

+

+/**

+ * Update fragment program state/atom.  This involves translating the

+ * Mesa fragment program into a gallium fragment program and binding it.

+ */

+static void

+update_fp( struct st_context *st )

+{

+   struct st_fragment_program *stfp;

+   struct st_fp_variant_key key;

+

+   assert(st->ctx->FragmentProgram._Current);

+   stfp = st_fragment_program(st->ctx->FragmentProgram._Current);

+   assert(stfp->Base.Base.Target == GL_FRAGMENT_PROGRAM_ARB);

+

+   memset(&key, 0, sizeof(key));

+   key.st = st;

+

+   st->fp_variant = st_get_fp_variant(st, stfp, &key);

+

+   st_reference_fragprog(st, &st->fp, stfp);

+

+   if (st->missing_textures) {

+      /* use a pass-through frag shader that uses no textures */

+      void *fs = get_passthrough_fs(st);

+      cso_set_fragment_shader_handle(st->cso_context, fs);

+   }

+   else {

+      cso_set_fragment_shader_handle(st->cso_context,

+                                     st->fp_variant->driver_shader);

+   }

+}

+

+

+const struct st_tracked_state st_update_fp = {

+   "st_update_fp",					/* name */

+   {							/* dirty */

+      0,						/* mesa */

+      ST_NEW_FRAGMENT_PROGRAM                           /* st */

+   },

+   update_fp  					/* update */

+};

+

+

+

+/**

+ * Update vertex program state/atom.  This involves translating the

+ * Mesa vertex program into a gallium fragment program and binding it.

+ */

+static void

+update_vp( struct st_context *st )

+{

+   struct st_vertex_program *stvp;

+   struct st_vp_variant_key key;

+

+   /* find active shader and params -- Should be covered by

+    * ST_NEW_VERTEX_PROGRAM

+    */

+   assert(st->ctx->VertexProgram._Current);

+   stvp = st_vertex_program(st->ctx->VertexProgram._Current);

+   assert(stvp->Base.Base.Target == GL_VERTEX_PROGRAM_ARB);

+

+   memset(&key, 0, sizeof key);

+   key.st = st;  /* variants are per-context */

+

+   /* When this is true, we will add an extra input to the vertex

+    * shader translation (for edgeflags), an extra output with

+    * edgeflag semantics, and extend the vertex shader to pass through

+    * the input to the output.  We'll need to use similar logic to set

+    * up the extra vertex_element input for edgeflags.

+    * _NEW_POLYGON, ST_NEW_EDGEFLAGS_DATA

+    */

+   key.passthrough_edgeflags = (st->vertdata_edgeflags && (

+                                st->ctx->Polygon.FrontMode != GL_FILL ||

+                                st->ctx->Polygon.BackMode != GL_FILL));

+

+   st->vp_variant = st_get_vp_variant(st, stvp, &key);

+

+   st_reference_vertprog(st, &st->vp, stvp);

+

+   cso_set_vertex_shader_handle(st->cso_context, 

+                                st->vp_variant->driver_shader);

+

+   st->vertex_result_to_slot = stvp->result_to_output;

+}

+

+

+const struct st_tracked_state st_update_vp = {

+   "st_update_vp",					/* name */

+   {							/* dirty */

+      _NEW_POLYGON,					/* mesa */

+      ST_NEW_VERTEX_PROGRAM | ST_NEW_EDGEFLAGS_DATA	/* st */

+   },

+   update_vp						/* update */

+};

+

+

+

+static void

+update_gp( struct st_context *st )

+{

+   struct st_geometry_program *stgp;

+   struct st_gp_variant_key key;

+

+   if (!st->ctx->GeometryProgram._Current) {

+      cso_set_geometry_shader_handle(st->cso_context, NULL);

+      return;

+   }

+

+   stgp = st_geometry_program(st->ctx->GeometryProgram._Current);

+   assert(stgp->Base.Base.Target == MESA_GEOMETRY_PROGRAM);

+

+   memset(&key, 0, sizeof(key));

+   key.st = st;

+

+   st->gp_variant = st_get_gp_variant(st, stgp, &key);

+

+   st_reference_geomprog(st, &st->gp, stgp);

+

+   cso_set_geometry_shader_handle(st->cso_context,

+                                  st->gp_variant->driver_shader);

+}

+

+const struct st_tracked_state st_update_gp = {

+   "st_update_gp",			/* name */

+   {					/* dirty */

+      0,				/* mesa */

+      ST_NEW_GEOMETRY_PROGRAM           /* st */

+   },

+   update_gp  				/* update */

+};