i965g: hook up pipe sampler callbacks

1 files changed, 114 insertions, 63 deletions

diff --git a/src/gallium/drivers/i965/brw_pipe_sampler.c b/src/gallium/drivers/i965/brw_pipe_sampler.c
index 56cf95c4cd..f0a765ecf5 100644
--- a/src/gallium/drivers/i965/brw_pipe_sampler.c
+++ b/src/gallium/drivers/i965/brw_pipe_sampler.c
@@ -1,5 +1,7 @@
 
 #include "util/u_memory.h"
+#include "util/u_math.h"
+
 #include "pipe/p_context.h"
 #include "pipe/p_state.h"
 
@@ -39,119 +41,166 @@ static GLuint translate_wrap_mode( unsigned wrap )
    }
 }
 
+static GLuint translate_img_filter( unsigned filter )
+{
+   switch (filter) {
+   case PIPE_TEX_FILTER_NEAREST:
+      return BRW_MAPFILTER_NEAREST;
+   case PIPE_TEX_FILTER_LINEAR:
+      return BRW_MAPFILTER_LINEAR;
+   case PIPE_TEX_FILTER_ANISO:
+      return BRW_MAPFILTER_ANISOTROPIC;
+   default:
+      assert(0);
+      return BRW_MAPFILTER_NEAREST;
+   }
+}
 
-
-static void *brw_create_sampler_state( struct pipe_context *pipe,
-				     const struct pipe_sampler_state *templ )
+static GLuint translate_mip_filter( unsigned filter )
 {
-   struct brw_sampler_state *sampler = CALLOC_STRUCT(brw_sampler_state);
+   switch (filter) {
+   case PIPE_TEX_MIPFILTER_NONE: 
+      return BRW_MIPFILTER_NONE;
+   case PIPE_TEX_MIPFILTER_NEAREST:
+      return BRW_MIPFILTER_NEAREST;
+   case PIPE_TEX_MIPFILTER_LINEAR:
+      return BRW_MIPFILTER_LINEAR;
+   default:
+      assert(0);
+      return BRW_MIPFILTER_NONE;
+   }
+}
 
-   switch (key->minfilter) {
-   case GL_NEAREST:
-      sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
-      sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
-      break;
-   case GL_LINEAR:
-      sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
-      sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
-      break;
-   case GL_NEAREST_MIPMAP_NEAREST:
-      sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
-      sampler->ss0.mip_filter = BRW_MIPFILTER_NEAREST;
-      break;
-   case GL_LINEAR_MIPMAP_NEAREST:
-      sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
-      sampler->ss0.mip_filter = BRW_MIPFILTER_NEAREST;
-      break;
-   case GL_NEAREST_MIPMAP_LINEAR:
-      sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
-      sampler->ss0.mip_filter = BRW_MIPFILTER_LINEAR;
-      break;
-   case GL_LINEAR_MIPMAP_LINEAR:
-      sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
-      sampler->ss0.mip_filter = BRW_MIPFILTER_LINEAR;
-      break;
+/* XXX: not sure why there are special translations for the shadow tex
+ * compare functions.  In particular ALWAYS is translated to NEVER.
+ * Is this a hardware issue?  Does i965 really suffer from this?
+ */
+static GLuint translate_shadow_compare_func( unsigned func )
+{
+   switch (func) {
+   case PIPE_FUNC_NEVER: 
+       return BRW_COMPAREFUNCTION_ALWAYS;
+   case PIPE_FUNC_LESS: 
+       return BRW_COMPAREFUNCTION_LEQUAL;
+   case PIPE_FUNC_LEQUAL: 
+       return BRW_COMPAREFUNCTION_LESS;
+   case PIPE_FUNC_GREATER: 
+       return BRW_COMPAREFUNCTION_GEQUAL;
+   case PIPE_FUNC_GEQUAL: 
+      return BRW_COMPAREFUNCTION_GREATER;
+   case PIPE_FUNC_NOTEQUAL: 
+      return BRW_COMPAREFUNCTION_EQUAL;
+   case PIPE_FUNC_EQUAL: 
+      return BRW_COMPAREFUNCTION_NOTEQUAL;
+   case PIPE_FUNC_ALWAYS: 
+       return BRW_COMPAREFUNCTION_NEVER;
    default:
-      break;
+      assert(0);
+      return BRW_COMPAREFUNCTION_NEVER;
    }
+}
+
+
+
+
+static void *
+brw_create_sampler_state( struct pipe_context *pipe,
+                          const struct pipe_sampler_state *template )
+{
+   struct brw_sampler_state *sampler = CALLOC_STRUCT(brw_sampler_state);
+
+   sampler->ss0.min_filter = translate_img_filter( template->min_img_filter );
+   sampler->ss0.mag_filter = translate_img_filter( template->mag_img_filter );
+   sampler->ss0.mip_filter = translate_mip_filter( template->min_mip_filter );
 
-   /* Set Anisotropy: 
+
+   /* XXX: anisotropy logic slightly changed: 
     */
-   if (key->max_aniso > 1.0) {
+   if (template->max_anisotropy > 1.0) {
       sampler->ss0.min_filter = BRW_MAPFILTER_ANISOTROPIC; 
       sampler->ss0.mag_filter = BRW_MAPFILTER_ANISOTROPIC;
 
-      if (key->max_aniso > 2.0) {
-	 sampler->ss3.max_aniso = MIN2((key->max_aniso - 2) / 2,
+      if (template->max_anisotropy > 2.0) {
+	 sampler->ss3.max_aniso = MIN2((template->max_anisotropy - 2) / 2,
 				       BRW_ANISORATIO_16);
       }
    }
-   else {
-      switch (key->magfilter) {
-      case GL_NEAREST:
-	 sampler->ss0.mag_filter = BRW_MAPFILTER_NEAREST;
-	 break;
-      case GL_LINEAR:
-	 sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
-	 break;
-      default:
-	 break;
-      }
-   }
 
-   sampler->ss1.r_wrap_mode = translate_wrap_mode(key->wrap_r);
-   sampler->ss1.s_wrap_mode = translate_wrap_mode(key->wrap_s);
-   sampler->ss1.t_wrap_mode = translate_wrap_mode(key->wrap_t);
+   sampler->ss1.r_wrap_mode = translate_wrap_mode(template->wrap_r);
+   sampler->ss1.s_wrap_mode = translate_wrap_mode(template->wrap_s);
+   sampler->ss1.t_wrap_mode = translate_wrap_mode(template->wrap_t);
 
    /* Set LOD bias: 
     */
-   sampler->ss0.lod_bias = S_FIXED(CLAMP(key->lod_bias, -16, 15), 6);
+   sampler->ss0.lod_bias = 
+      util_signed_fixed(CLAMP(template->lod_bias, -16, 15), 6);
+
 
    sampler->ss0.lod_preclamp = 1; /* OpenGL mode */
    sampler->ss0.default_color_mode = 0; /* OpenGL/DX10 mode */
 
    /* Set shadow function: 
     */
-   if (key->comparemode == GL_COMPARE_R_TO_TEXTURE_ARB) {
+   if (template->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE) {
+
       /* Shadowing is "enabled" by emitting a particular sampler
        * message (sample_c).  So need to recompile WM program when
        * shadow comparison is enabled on each/any texture unit.
        */
       sampler->ss0.shadow_function =
-	 intel_translate_shadow_compare_func(key->comparefunc);
+	 translate_shadow_compare_func(template->compare_func);
    }
 
    /* Set BaseMipLevel, MaxLOD, MinLOD: 
     */
-   sampler->ss0.base_level = U_FIXED(0, 1);
+   sampler->ss0.base_level = 
+      util_unsigned_fixed(0, 1);
+
+   sampler->ss1.max_lod = 
+      util_unsigned_fixed(CLAMP(template->max_lod, 0, 13), 6);
 
-   sampler->ss1.max_lod = U_FIXED(MIN2(MAX2(key->maxlod, 0), 13), 6);
-   sampler->ss1.min_lod = U_FIXED(MIN2(MAX2(key->minlod, 0), 13), 6);
+   sampler->ss1.min_lod = 
+      util_unsigned_fixed(CLAMP(template->min_lod, 0, 13), 6);
 
    return (void *)sampler;
 }
 
 static void brw_bind_sampler_state(struct pipe_context *pipe,
-				 void *cso)
+                                   unsigned num, void **sampler)
 {
    struct brw_context *brw = brw_context(pipe);
-   brw->curr.sampler = (const struct brw_sampler_state *)cso;
-   brw->state.dirty.mesa |= PIPE_NEW_SAMPLER;
+   int i;
+
+   for (i = 0; i < num; i++)
+      brw->curr.sampler[i] = sampler[i];
+
+   for (i = num; i < brw->curr.num_samplers; i++)
+      brw->curr.sampler[i] = NULL;
+
+   brw->curr.num_samplers = num;
+   brw->state.dirty.mesa |= PIPE_NEW_SAMPLERS;
 }
 
 static void brw_delete_sampler_state(struct pipe_context *pipe,
 				  void *cso)
 {
-   struct brw_context *brw = brw_context(pipe);
    FREE(cso);
 }
 
 static void brw_set_sampler_textures(struct pipe_context *pipe,
-				     unsigned num_textures,
-				     struct pipe_texture **tex)
+				     unsigned num,
+				     struct pipe_texture **texture)
 {
    struct brw_context *brw = brw_context(pipe);
+   int i;
 
+   for (i = 0; i < num; i++)
+      pipe_texture_reference(&brw->curr.texture[i], texture[i]);
+
+   for (i = num; i < brw->curr.num_textures; i++)
+      pipe_texture_reference(&brw->curr.texture[i], NULL);
+
+   brw->curr.num_textures = num;
    brw->state.dirty.mesa |= PIPE_NEW_BOUND_TEXTURES;
 }
 
@@ -160,8 +209,10 @@ void brw_pipe_sampler_init( struct brw_context *brw )
 {
    brw->base.set_sampler_textures = brw_set_sampler_textures;
    brw->base.create_sampler_state = brw_create_sampler_state;
-   brw->base.bind_sampler_state = brw_bind_sampler_state;
-   brw->base.destroy_sampler_state = brw_destroy_sampler_state;
+   brw->base.bind_sampler_states = brw_bind_sampler_state;
+   brw->base.delete_sampler_state = brw_delete_sampler_state;
+
+   brw->base.set_sampler_textures = brw_set_sampler_textures;
 }
 
 void brw_pipe_sampler_cleanup( struct brw_context *brw )