1 files changed, 246 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_state_fs.c b/src/gallium/drivers/svga/svga_state_fs.c
new file mode 100644
index 0000000000..ad6f294713
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_state_fs.c
@@ -0,0 +1,246 @@
+/**********************************************************
+ * Copyright 2008-2009 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 OR COPYRIGHT HOLDERS
+ * 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.
+ *
+ **********************************************************/
+
+#include "util/u_inlines.h"
+#include "pipe/p_defines.h"
+#include "util/u_math.h"
+#include "util/u_bitmask.h"
+
+#include "svga_context.h"
+#include "svga_state.h"
+#include "svga_cmd.h"
+#include "svga_tgsi.h"
+
+#include "svga_hw_reg.h"
+
+
+
+static INLINE int compare_fs_keys( const struct svga_fs_compile_key *a,
+                                   const struct svga_fs_compile_key *b )
+{
+   unsigned keysize_a = svga_fs_key_size( a );
+   unsigned keysize_b = svga_fs_key_size( b );
+
+   if (keysize_a != keysize_b) {
+      return (int)(keysize_a - keysize_b);
+   }
+   return memcmp( a, b, keysize_a );
+}
+
+
+static struct svga_shader_result *search_fs_key( struct svga_fragment_shader *fs,
+                                                 const struct svga_fs_compile_key *key )
+{
+   struct svga_shader_result *result = fs->base.results;
+
+   assert(key);
+
+   for ( ; result; result = result->next) {
+      if (compare_fs_keys( key, &result->key.fkey ) == 0)
+         return result;
+   }
+   
+   return NULL;
+}
+
+
+static enum pipe_error compile_fs( struct svga_context *svga,
+                                   struct svga_fragment_shader *fs,
+                                   const struct svga_fs_compile_key *key,
+                                   struct svga_shader_result **out_result )
+{
+   struct svga_shader_result *result;
+   enum pipe_error ret = PIPE_ERROR;
+
+   result = svga_translate_fragment_program( fs, key );
+   if (result == NULL) {
+      ret = PIPE_ERROR_OUT_OF_MEMORY;
+      goto fail;
+   }
+
+   result->id = util_bitmask_add(svga->fs_bm);
+   if(result->id == UTIL_BITMASK_INVALID_INDEX) {
+      ret = PIPE_ERROR_OUT_OF_MEMORY;
+      goto fail;
+   }
+
+   ret = SVGA3D_DefineShader(svga->swc, 
+                             result->id,
+                             SVGA3D_SHADERTYPE_PS,
+                             result->tokens, 
+                             result->nr_tokens * sizeof result->tokens[0]);
+   if (ret)
+      goto fail;
+
+   *out_result = result;
+   result->next = fs->base.results;
+   fs->base.results = result;
+   return PIPE_OK;
+
+fail:
+   if (result) {
+      if (result->id != UTIL_BITMASK_INVALID_INDEX)
+         util_bitmask_clear( svga->fs_bm, result->id );
+      svga_destroy_shader_result( result );
+   }
+   return ret;
+}
+
+
+/* SVGA_NEW_TEXTURE_BINDING
+ * SVGA_NEW_RAST
+ * SVGA_NEW_NEED_SWTNL
+ * SVGA_NEW_SAMPLER
+ */
+static int make_fs_key( const struct svga_context *svga,
+                        struct svga_fs_compile_key *key )
+{
+   int i;
+   int idx = 0;
+
+   memset(key, 0, sizeof *key);
+
+   /* Only need fragment shader fixup for twoside lighting if doing
+    * hwtnl.  Otherwise the draw module does the whole job for us.
+    *
+    * SVGA_NEW_SWTNL
+    */
+   if (!svga->state.sw.need_swtnl) {
+      /* SVGA_NEW_RAST
+       */
+      key->light_twoside = svga->curr.rast->templ.light_twoside;
+      key->front_ccw = svga->curr.rast->templ.front_ccw;
+   }
+
+   /* The blend workaround for simulating logicop xor behaviour
+    * requires that the incoming fragment color be white.  This change
+    * achieves that by creating a varient of the current fragment
+    * shader that overrides all output colors with 1,1,1,1
+    *   
+    * This will work for most shaders, including those containing
+    * TEXKIL and/or depth-write.  However, it will break on the
+    * combination of xor-logicop plus alphatest.
+    *
+    * Ultimately, we could implement alphatest in the shader using
+    * texkil prior to overriding the outgoing fragment color.
+    *   
+    * SVGA_NEW_BLEND
+    */
+   if (svga->curr.blend->need_white_fragments) {
+      key->white_fragments = 1;
+   }
+   
+   /* XXX: want to limit this to the textures that the shader actually
+    * refers to.
+    *
+    * SVGA_NEW_TEXTURE_BINDING | SVGA_NEW_SAMPLER
+    */
+   for (i = 0; i < svga->curr.num_sampler_views; i++) {
+      if (svga->curr.sampler_views[i]) {
+         assert(svga->curr.sampler[i]);
+         assert(svga->curr.sampler_views[i]->texture);
+         key->tex[i].texture_target = svga->curr.sampler_views[i]->texture->target;
+         if (!svga->curr.sampler[i]->normalized_coords) {
+            key->tex[i].width_height_idx = idx++;
+            key->tex[i].unnormalized = TRUE;
+            ++key->num_unnormalized_coords;
+         }
+      }
+   }
+   key->num_textures = svga->curr.num_sampler_views;
+
+   idx = 0;
+   for (i = 0; i < svga->curr.num_samplers; ++i) {
+      if (svga->curr.sampler[i]) {
+         key->tex[i].compare_mode = svga->curr.sampler[i]->compare_mode;
+         key->tex[i].compare_func = svga->curr.sampler[i]->compare_func;
+      }
+   }
+
+   return 0;
+}
+
+
+
+static int emit_hw_fs( struct svga_context *svga,
+                       unsigned dirty )
+{
+   struct svga_shader_result *result = NULL;
+   unsigned id = SVGA3D_INVALID_ID;
+   int ret = 0;
+
+   struct svga_fragment_shader *fs = svga->curr.fs;
+   struct svga_fs_compile_key key;
+
+   /* SVGA_NEW_BLEND
+    * SVGA_NEW_TEXTURE_BINDING
+    * SVGA_NEW_RAST
+    * SVGA_NEW_NEED_SWTNL
+    * SVGA_NEW_SAMPLER
+    */
+   ret = make_fs_key( svga, &key );
+   if (ret)
+      return ret;
+
+   result = search_fs_key( fs, &key );
+   if (!result) {
+      ret = compile_fs( svga, fs, &key, &result );
+      if (ret)
+         return ret;
+   }
+
+   assert (result);
+   id = result->id;
+
+   assert(id != SVGA3D_INVALID_ID);
+
+   if (result != svga->state.hw_draw.fs) {
+      ret = SVGA3D_SetShader(svga->swc,
+                             SVGA3D_SHADERTYPE_PS,
+                             id );
+      if (ret)
+         return ret;
+
+      svga->dirty |= SVGA_NEW_FS_RESULT;
+      svga->state.hw_draw.fs = result;      
+   }
+
+   return 0;
+}
+
+struct svga_tracked_state svga_hw_fs = 
+{
+   "fragment shader (hwtnl)",
+   (SVGA_NEW_FS |
+    SVGA_NEW_TEXTURE_BINDING |
+    SVGA_NEW_NEED_SWTNL |
+    SVGA_NEW_RAST |
+    SVGA_NEW_SAMPLER |
+    SVGA_NEW_BLEND),
+   emit_hw_fs
+};
+
+
+