Пример #1
0
/* Recalculate all state from scratch.  Perhaps not the most
 * efficient, but this has gotten complex enough that we need
 * something which is understandable and reliable.
 */
static GLboolean
i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
{
   struct gl_context *ctx = &intel->ctx;
   struct i915_context *i915 = i915_context(ctx);
   struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *tObj = tUnit->_Current;
   struct intel_texture_object *intelObj = intel_texture_object(tObj);
   struct gl_texture_image *firstImage;
   GLuint *state = i915->state.Tex[unit], format, pitch;
   GLint lodbias, aniso = 0;
   GLubyte border[4];
   GLfloat maxlod;

   memset(state, 0, sizeof(state));

   /*We need to refcount these. */

   if (i915->state.tex_buffer[unit] != NULL) {
       drm_intel_bo_unreference(i915->state.tex_buffer[unit]);
       i915->state.tex_buffer[unit] = NULL;
   }

   if (!intel_finalize_mipmap_tree(intel, unit))
      return GL_FALSE;

   /* Get first image here, since intelObj->firstLevel will get set in
    * the intel_finalize_mipmap_tree() call above.
    */
   firstImage = tObj->Image[0][intelObj->firstLevel];

   drm_intel_bo_reference(intelObj->mt->region->buffer);
   i915->state.tex_buffer[unit] = intelObj->mt->region->buffer;
   i915->state.tex_offset[unit] = 0; /* Always the origin of the miptree */

   format = translate_texture_format(firstImage->TexFormat,
				     firstImage->InternalFormat,
				     tObj->DepthMode);
   pitch = intelObj->mt->region->pitch * intelObj->mt->cpp;

   state[I915_TEXREG_MS3] =
      (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
       ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);

   if (intelObj->mt->region->tiling != I915_TILING_NONE) {
      state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
      if (intelObj->mt->region->tiling == I915_TILING_Y)
	 state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
   }

   /* We get one field with fraction bits for the maximum addressable
    * (lowest resolution) LOD.  Use it to cover both MAX_LEVEL and
    * MAX_LOD.
    */
   maxlod = MIN2(tObj->MaxLod, tObj->_MaxLevel - tObj->BaseLevel);
   state[I915_TEXREG_MS4] =
      ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
       MS4_CUBE_FACE_ENA_MASK |
       (U_FIXED(CLAMP(maxlod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
       ((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));


   {
      GLuint minFilt, mipFilt, magFilt;

      switch (tObj->MinFilter) {
      case GL_NEAREST:
         minFilt = FILTER_NEAREST;
         mipFilt = MIPFILTER_NONE;
         break;
      case GL_LINEAR:
         minFilt = FILTER_LINEAR;
         mipFilt = MIPFILTER_NONE;
         break;
      case GL_NEAREST_MIPMAP_NEAREST:
         minFilt = FILTER_NEAREST;
         mipFilt = MIPFILTER_NEAREST;
         break;
      case GL_LINEAR_MIPMAP_NEAREST:
         minFilt = FILTER_LINEAR;
         mipFilt = MIPFILTER_NEAREST;
         break;
      case GL_NEAREST_MIPMAP_LINEAR:
         minFilt = FILTER_NEAREST;
         mipFilt = MIPFILTER_LINEAR;
         break;
      case GL_LINEAR_MIPMAP_LINEAR:
         minFilt = FILTER_LINEAR;
         mipFilt = MIPFILTER_LINEAR;
         break;
      default:
         return GL_FALSE;
      }

      if (tObj->MaxAnisotropy > 1.0) {
         minFilt = FILTER_ANISOTROPIC;
         magFilt = FILTER_ANISOTROPIC;
         if (tObj->MaxAnisotropy > 2.0)
            aniso = SS2_MAX_ANISO_4;
         else
            aniso = SS2_MAX_ANISO_2;
      }
      else {
         switch (tObj->MagFilter) {
         case GL_NEAREST:
            magFilt = FILTER_NEAREST;
            break;
         case GL_LINEAR:
            magFilt = FILTER_LINEAR;
            break;
         default:
            return GL_FALSE;
         }
      }

      lodbias = (int) ((tUnit->LodBias + tObj->LodBias) * 16.0);
      if (lodbias < -256)
          lodbias = -256;
      if (lodbias > 255)
          lodbias = 255;
      state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) & 
                                SS2_LOD_BIAS_MASK);

      /* YUV conversion:
       */
      if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
          firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
         state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;

      /* Shadow:
       */
      if (tObj->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
          tObj->Target != GL_TEXTURE_3D) {
         if (tObj->Target == GL_TEXTURE_1D) 
            return GL_FALSE;

         state[I915_TEXREG_SS2] |=
            (SS2_SHADOW_ENABLE |
             intel_translate_shadow_compare_func(tObj->CompareFunc));

         minFilt = FILTER_4X4_FLAT;
         magFilt = FILTER_4X4_FLAT;
      }

      state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
                                 (mipFilt << SS2_MIP_FILTER_SHIFT) |
                                 (magFilt << SS2_MAG_FILTER_SHIFT) |
                                 aniso);
   }

   {
      GLenum ws = tObj->WrapS;
      GLenum wt = tObj->WrapT;
      GLenum wr = tObj->WrapR;
      float minlod;

      /* We program 1D textures as 2D textures, so the 2D texcoord could
       * result in sampling border values if we don't set the T wrap to
       * repeat.
       */
      if (tObj->Target == GL_TEXTURE_1D)
	 wt = GL_REPEAT;

      /* 3D textures don't seem to respect the border color.
       * Fallback if there's ever a danger that they might refer to
       * it.  
       * 
       * Effectively this means fallback on 3D clamp or
       * clamp_to_border.
       */
      if (tObj->Target == GL_TEXTURE_3D &&
          (tObj->MinFilter != GL_NEAREST ||
           tObj->MagFilter != GL_NEAREST) &&
          (ws == GL_CLAMP ||
           wt == GL_CLAMP ||
           wr == GL_CLAMP ||
           ws == GL_CLAMP_TO_BORDER ||
           wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
         return GL_FALSE;

      /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not 
       * used) when using cube map texture coordinates
       */
      if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
          (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
           ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
          return GL_FALSE;

      state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */

      state[I915_TEXREG_SS3] |=
         ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
          (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
          (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));

      minlod = MIN2(tObj->MinLod, tObj->_MaxLevel - tObj->BaseLevel);
      state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
      state[I915_TEXREG_SS3] |= (U_FIXED(CLAMP(minlod, 0.0, 11.0), 4) <<
				 SS3_MIN_LOD_SHIFT);

   }

   /* convert border color from float to ubyte */
   CLAMPED_FLOAT_TO_UBYTE(border[0], tObj->BorderColor.f[0]);
   CLAMPED_FLOAT_TO_UBYTE(border[1], tObj->BorderColor.f[1]);
   CLAMPED_FLOAT_TO_UBYTE(border[2], tObj->BorderColor.f[2]);
   CLAMPED_FLOAT_TO_UBYTE(border[3], tObj->BorderColor.f[3]);

   if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
      /* GL specs that border color for depth textures is taken from the
       * R channel, while the hardware uses A.  Spam R into all the channels
       * for safety.
       */
      state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[0],
					       border[0],
					       border[0],
					       border[0]);
   } else {
      state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[3],
					       border[0],
					       border[1],
					       border[2]);
   }


   I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), GL_TRUE);
   /* memcmp was already disabled, but definitely won't work as the
    * region might now change and that wouldn't be detected:
    */
   I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));


#if 0
   DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
   DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
   DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
   DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
   DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
   DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
#endif

   return GL_TRUE;
}
Пример #2
0
/**
 * Sets the sampler state for a single unit.
 */
static void
gen7_update_sampler_state(struct brw_context *brw, int unit,
			  struct gen7_sampler_state *sampler)
{
   struct intel_context *intel = &brw->intel;
   struct gl_context *ctx = &intel->ctx;
   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *texObj = texUnit->_Current;
   struct gl_sampler_object *gl_sampler = _mesa_get_samplerobj(ctx, unit);
   bool using_nearest = false;

   switch (gl_sampler->MinFilter) {
   case GL_NEAREST:
      sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
      sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
      using_nearest = true;
      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;
   default:
      break;
   }

   /* Set Anisotropy: */
   if (gl_sampler->MaxAnisotropy > 1.0) {
      sampler->ss0.min_filter = BRW_MAPFILTER_ANISOTROPIC;
      sampler->ss0.mag_filter = BRW_MAPFILTER_ANISOTROPIC;

      if (gl_sampler->MaxAnisotropy > 2.0) {
	 sampler->ss3.max_aniso = MIN2((gl_sampler->MaxAnisotropy - 2) / 2,
				       BRW_ANISORATIO_16);
      }
   }
   else {
      switch (gl_sampler->MagFilter) {
      case GL_NEAREST:
	 sampler->ss0.mag_filter = BRW_MAPFILTER_NEAREST;
	 using_nearest = true;
	 break;
      case GL_LINEAR:
	 sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
	 break;
      default:
	 break;
      }
   }

   sampler->ss3.r_wrap_mode = translate_wrap_mode(gl_sampler->WrapR,
						  using_nearest);
   sampler->ss3.s_wrap_mode = translate_wrap_mode(gl_sampler->WrapS,
						  using_nearest);
   sampler->ss3.t_wrap_mode = translate_wrap_mode(gl_sampler->WrapT,
						  using_nearest);

   /* Cube-maps on 965 and later must use the same wrap mode for all 3
    * coordinate dimensions.  Futher, only CUBE and CLAMP are valid.
    */
   if (texObj->Target == GL_TEXTURE_CUBE_MAP) {
      if (ctx->Texture.CubeMapSeamless &&
	  (gl_sampler->MinFilter != GL_NEAREST ||
	   gl_sampler->MagFilter != GL_NEAREST)) {
	 sampler->ss3.r_wrap_mode = BRW_TEXCOORDMODE_CUBE;
	 sampler->ss3.s_wrap_mode = BRW_TEXCOORDMODE_CUBE;
	 sampler->ss3.t_wrap_mode = BRW_TEXCOORDMODE_CUBE;
      } else {
	 sampler->ss3.r_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
	 sampler->ss3.s_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
	 sampler->ss3.t_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
      }
   } else if (texObj->Target == GL_TEXTURE_1D) {
      /* There's a bug in 1D texture sampling - it actually pays
       * attention to the wrap_t value, though it should not.
       * Override the wrap_t value here to GL_REPEAT to keep
       * any nonexistent border pixels from floating in.
       */
      sampler->ss3.t_wrap_mode = BRW_TEXCOORDMODE_WRAP;
   }

   /* Set shadow function: */
   if (gl_sampler->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) {
      /* 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->ss1.shadow_function =
	 intel_translate_shadow_compare_func(gl_sampler->CompareFunc);
   }

   /* Set LOD bias: */
   sampler->ss0.lod_bias = S_FIXED(CLAMP(texUnit->LodBias +
					 gl_sampler->LodBias, -16, 15), 8);

   sampler->ss0.lod_preclamp = 1; /* OpenGL mode */
   sampler->ss0.default_color_mode = 0; /* OpenGL/DX10 mode */

   /* Set BaseMipLevel, MaxLOD, MinLOD:
    *
    * XXX: I don't think that using firstLevel, lastLevel works,
    * because we always setup the surface state as if firstLevel ==
    * level zero.  Probably have to subtract firstLevel from each of
    * these:
    */
   sampler->ss0.base_level = U_FIXED(0, 1);

   sampler->ss1.max_lod = U_FIXED(CLAMP(gl_sampler->MaxLod, 0, 13), 8);
   sampler->ss1.min_lod = U_FIXED(CLAMP(gl_sampler->MinLod, 0, 13), 8);

   upload_default_color(brw, gl_sampler, unit);

   sampler->ss2.default_color_pointer = brw->wm.sdc_offset[unit] >> 5;
}
Пример #3
0
/**
 * Sets the sampler state for a single unit.
 */
static void
gen7_update_sampler_state(struct brw_context *brw, int unit, int ss_index,
			  struct gen7_sampler_state *sampler,
                          uint32_t *sdc_offset)
{
   struct gl_context *ctx = &brw->ctx;
   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *texObj = texUnit->_Current;
   struct gl_sampler_object *gl_sampler = _mesa_get_samplerobj(ctx, unit);
   bool using_nearest = false;

   /* These don't use samplers at all. */
   if (texObj->Target == GL_TEXTURE_BUFFER)
      return;

   switch (gl_sampler->MinFilter) {
   case GL_NEAREST:
      sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
      sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
      using_nearest = true;
      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;
   default:
      break;
   }

   /* Set Anisotropy: */
   if (gl_sampler->MaxAnisotropy > 1.0) {
      sampler->ss0.min_filter = BRW_MAPFILTER_ANISOTROPIC;
      sampler->ss0.mag_filter = BRW_MAPFILTER_ANISOTROPIC;
      sampler->ss0.aniso_algorithm = 1;

      if (gl_sampler->MaxAnisotropy > 2.0) {
	 sampler->ss3.max_aniso = MIN2((gl_sampler->MaxAnisotropy - 2) / 2,
				       BRW_ANISORATIO_16);
      }
   }
   else {
      switch (gl_sampler->MagFilter) {
      case GL_NEAREST:
	 sampler->ss0.mag_filter = BRW_MAPFILTER_NEAREST;
	 using_nearest = true;
	 break;
      case GL_LINEAR:
	 sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
	 break;
      default:
	 break;
      }
   }

   sampler->ss3.r_wrap_mode = translate_wrap_mode(gl_sampler->WrapR,
						  using_nearest);
   sampler->ss3.s_wrap_mode = translate_wrap_mode(gl_sampler->WrapS,
						  using_nearest);
   sampler->ss3.t_wrap_mode = translate_wrap_mode(gl_sampler->WrapT,
						  using_nearest);

   /* Cube-maps on 965 and later must use the same wrap mode for all 3
    * coordinate dimensions.  Futher, only CUBE and CLAMP are valid.
    */
   if (texObj->Target == GL_TEXTURE_CUBE_MAP ||
       texObj->Target == GL_TEXTURE_CUBE_MAP_ARRAY) {
      if ((ctx->Texture.CubeMapSeamless || gl_sampler->CubeMapSeamless) &&
	  (gl_sampler->MinFilter != GL_NEAREST ||
	   gl_sampler->MagFilter != GL_NEAREST)) {
	 sampler->ss3.r_wrap_mode = BRW_TEXCOORDMODE_CUBE;
	 sampler->ss3.s_wrap_mode = BRW_TEXCOORDMODE_CUBE;
	 sampler->ss3.t_wrap_mode = BRW_TEXCOORDMODE_CUBE;
      } else {
	 sampler->ss3.r_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
	 sampler->ss3.s_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
	 sampler->ss3.t_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
      }
   } else if (texObj->Target == GL_TEXTURE_1D) {
      /* There's a bug in 1D texture sampling - it actually pays
       * attention to the wrap_t value, though it should not.
       * Override the wrap_t value here to GL_REPEAT to keep
       * any nonexistent border pixels from floating in.
       */
      sampler->ss3.t_wrap_mode = BRW_TEXCOORDMODE_WRAP;
   }

   /* Set shadow function: */
   if (gl_sampler->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) {
      /* 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->ss1.shadow_function =
	 intel_translate_shadow_compare_func(gl_sampler->CompareFunc);
   }

   /* Set LOD bias: */
   sampler->ss0.lod_bias = S_FIXED(CLAMP(texUnit->LodBias +
					 gl_sampler->LodBias, -16, 15), 8);

   sampler->ss0.lod_preclamp = 1; /* OpenGL mode */
   sampler->ss0.default_color_mode = 0; /* OpenGL/DX10 mode */

   sampler->ss0.base_level = U_FIXED(0, 1);

   sampler->ss1.max_lod = U_FIXED(CLAMP(gl_sampler->MaxLod, 0, 13), 8);
   sampler->ss1.min_lod = U_FIXED(CLAMP(gl_sampler->MinLod, 0, 13), 8);

   /* The sampler can handle non-normalized texture rectangle coordinates
    * natively
    */
   if (texObj->Target == GL_TEXTURE_RECTANGLE) {
      sampler->ss3.non_normalized_coord = 1;
   }

   upload_default_color(brw, gl_sampler, unit, sdc_offset);

   sampler->ss2.default_color_pointer = *sdc_offset >> 5;

   if (sampler->ss0.min_filter != BRW_MAPFILTER_NEAREST)
      sampler->ss3.address_round |= BRW_ADDRESS_ROUNDING_ENABLE_U_MIN |
                                    BRW_ADDRESS_ROUNDING_ENABLE_V_MIN |
                                    BRW_ADDRESS_ROUNDING_ENABLE_R_MIN;
   if (sampler->ss0.mag_filter != BRW_MAPFILTER_NEAREST)
      sampler->ss3.address_round |= BRW_ADDRESS_ROUNDING_ENABLE_U_MAG |
                                    BRW_ADDRESS_ROUNDING_ENABLE_V_MAG |
                                    BRW_ADDRESS_ROUNDING_ENABLE_R_MAG;
}
Пример #4
0
static void brw_update_sampler_state( const struct pipe_sampler_state *pipe_sampler,
				      unsigned sdc_gs_offset,
				      struct brw_sampler_state *sampler)
{
   memset(sampler, 0, sizeof(*sampler));

   switch (pipe_sampler->min_mip_filter) {
   case PIPE_TEX_FILTER_NEAREST:
      sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
      break;
   case PIPE_TEX_FILTER_LINEAR:
      sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
      break;
   case PIPE_TEX_FILTER_ANISO:
      sampler->ss0.min_filter = BRW_MAPFILTER_ANISOTROPIC;
      break;
   default:
      break;
   }

   switch (pipe_sampler->min_mip_filter) {
   case PIPE_TEX_MIPFILTER_NEAREST:
      sampler->ss0.mip_filter = BRW_MIPFILTER_NEAREST;
      break;
   case PIPE_TEX_MIPFILTER_LINEAR:
      sampler->ss0.mip_filter = BRW_MIPFILTER_LINEAR;
      break;
   case PIPE_TEX_MIPFILTER_NONE:
      sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
      break;
   default:
      break;
   }
   /* Set Anisotropy:
    */
   switch (pipe_sampler->mag_img_filter) {
   case PIPE_TEX_FILTER_NEAREST:
      sampler->ss0.mag_filter = BRW_MAPFILTER_NEAREST;
      break;
   case PIPE_TEX_FILTER_LINEAR:
      sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
      break;
   case PIPE_TEX_FILTER_ANISO:
      sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
      break;
   default:
      break;
   }

   if (pipe_sampler->max_anisotropy > 2.0) {
      sampler->ss3.max_aniso = MAX2((pipe_sampler->max_anisotropy - 2) / 2,
                                    BRW_ANISORATIO_16);
   }

   sampler->ss1.s_wrap_mode = translate_wrap_mode(pipe_sampler->wrap_s);
   sampler->ss1.r_wrap_mode = translate_wrap_mode(pipe_sampler->wrap_r);
   sampler->ss1.t_wrap_mode = translate_wrap_mode(pipe_sampler->wrap_t);

   /* Fulsim complains if I don't do this.  Hardware doesn't mind:
    */
#if 0
   if (texObj->Target == GL_TEXTURE_CUBE_MAP_ARB) {
      sampler->ss1.r_wrap_mode = BRW_TEXCOORDMODE_CUBE;
      sampler->ss1.s_wrap_mode = BRW_TEXCOORDMODE_CUBE;
      sampler->ss1.t_wrap_mode = BRW_TEXCOORDMODE_CUBE;
   }
#endif

   /* Set shadow function:
    */
   if (pipe_sampler->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(pipe_sampler->compare_func);
   }

   /* Set LOD bias:
    */
   sampler->ss0.lod_bias = S_FIXED(CLAMP(pipe_sampler->lod_bias, -16, 15), 6);

   sampler->ss0.lod_preclamp = 1; /* OpenGL mode */
   sampler->ss0.default_color_mode = 0; /* OpenGL/DX10 mode */

   /* Set BaseMipLevel, MaxLOD, MinLOD:
    *
    * XXX: I don't think that using firstLevel, lastLevel works,
    * because we always setup the surface state as if firstLevel ==
    * level zero.  Probably have to subtract firstLevel from each of
    * these:
    */
   sampler->ss0.base_level = U_FIXED(0, 1);

   sampler->ss1.max_lod = U_FIXED(MIN2(MAX2(pipe_sampler->max_lod, 0), 13), 6);
   sampler->ss1.min_lod = U_FIXED(MIN2(MAX2(pipe_sampler->min_lod, 0), 13), 6);

   sampler->ss2.default_color_pointer = sdc_gs_offset >> 5;
}
Пример #5
0
/* Recalculate all state from scratch.  Perhaps not the most
 * efficient, but this has gotten complex enough that we need
 * something which is understandable and reliable.
 */
static bool
i915_update_tex_unit(struct intel_context *intel, GLuint unit, GLuint ss3)
{
   struct gl_context *ctx = &intel->ctx;
   struct i915_context *i915 = i915_context(ctx);
   struct gl_texture_unit *tUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *tObj = tUnit->_Current;
   struct intel_texture_object *intelObj = intel_texture_object(tObj);
   struct gl_texture_image *firstImage;
   struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
   GLuint *state = i915->state.Tex[unit], format, pitch;
   GLint lodbias, aniso = 0;
   GLubyte border[4];
   GLfloat maxlod;

   memset(state, 0, sizeof(state));

   /*We need to refcount these. */

   if (i915->state.tex_buffer[unit] != NULL) {
       drm_intel_bo_unreference(i915->state.tex_buffer[unit]);
       i915->state.tex_buffer[unit] = NULL;
   }

   if (!intel_finalize_mipmap_tree(intel, unit))
      return false;

   /* Get first image here, since intelObj->firstLevel will get set in
    * the intel_finalize_mipmap_tree() call above.
    */
   firstImage = tObj->Image[0][tObj->BaseLevel];

   drm_intel_bo_reference(intelObj->mt->region->bo);
   i915->state.tex_buffer[unit] = intelObj->mt->region->bo;
   i915->state.tex_offset[unit] = intelObj->mt->offset;

   format = translate_texture_format(firstImage->TexFormat,
				     tObj->DepthMode);
   pitch = intelObj->mt->region->pitch * intelObj->mt->cpp;

   state[I915_TEXREG_MS3] =
      (((firstImage->Height - 1) << MS3_HEIGHT_SHIFT) |
       ((firstImage->Width - 1) << MS3_WIDTH_SHIFT) | format);

   if (intelObj->mt->region->tiling != I915_TILING_NONE) {
      state[I915_TEXREG_MS3] |= MS3_TILED_SURFACE;
      if (intelObj->mt->region->tiling == I915_TILING_Y)
	 state[I915_TEXREG_MS3] |= MS3_TILE_WALK;
   }

   /* We get one field with fraction bits for the maximum addressable
    * (lowest resolution) LOD.  Use it to cover both MAX_LEVEL and
    * MAX_LOD.
    */
   maxlod = MIN2(sampler->MaxLod, tObj->_MaxLevel - tObj->BaseLevel);
   state[I915_TEXREG_MS4] =
      ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) |
       MS4_CUBE_FACE_ENA_MASK |
       (U_FIXED(CLAMP(maxlod, 0.0, 11.0), 2) << MS4_MAX_LOD_SHIFT) |
       ((firstImage->Depth - 1) << MS4_VOLUME_DEPTH_SHIFT));


   {
      GLuint minFilt, mipFilt, magFilt;

      switch (sampler->MinFilter) {
      case GL_NEAREST:
         minFilt = FILTER_NEAREST;
         mipFilt = MIPFILTER_NONE;
         break;
      case GL_LINEAR:
         minFilt = FILTER_LINEAR;
         mipFilt = MIPFILTER_NONE;
         break;
      case GL_NEAREST_MIPMAP_NEAREST:
         minFilt = FILTER_NEAREST;
         mipFilt = MIPFILTER_NEAREST;
         break;
      case GL_LINEAR_MIPMAP_NEAREST:
         minFilt = FILTER_LINEAR;
         mipFilt = MIPFILTER_NEAREST;
         break;
      case GL_NEAREST_MIPMAP_LINEAR:
         minFilt = FILTER_NEAREST;
         mipFilt = MIPFILTER_LINEAR;
         break;
      case GL_LINEAR_MIPMAP_LINEAR:
         minFilt = FILTER_LINEAR;
         mipFilt = MIPFILTER_LINEAR;
         break;
      default:
         return false;
      }

      if (sampler->MaxAnisotropy > 1.0) {
         minFilt = FILTER_ANISOTROPIC;
         magFilt = FILTER_ANISOTROPIC;
         if (sampler->MaxAnisotropy > 2.0)
            aniso = SS2_MAX_ANISO_4;
         else
            aniso = SS2_MAX_ANISO_2;
      }
      else {
         switch (sampler->MagFilter) {
         case GL_NEAREST:
            magFilt = FILTER_NEAREST;
            break;
         case GL_LINEAR:
            magFilt = FILTER_LINEAR;
            break;
         default:
            return false;
         }
      }

      lodbias = (int) ((tUnit->LodBias + sampler->LodBias) * 16.0);
      if (lodbias < -256)
          lodbias = -256;
      if (lodbias > 255)
          lodbias = 255;
      state[I915_TEXREG_SS2] = ((lodbias << SS2_LOD_BIAS_SHIFT) & 
                                SS2_LOD_BIAS_MASK);

      /* YUV conversion:
       */
      if (firstImage->TexFormat == MESA_FORMAT_YCBCR ||
          firstImage->TexFormat == MESA_FORMAT_YCBCR_REV)
         state[I915_TEXREG_SS2] |= SS2_COLORSPACE_CONVERSION;

      /* Shadow:
       */
      if (sampler->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB &&
          tObj->Target != GL_TEXTURE_3D) {
         if (tObj->Target == GL_TEXTURE_1D) 
            return false;

         state[I915_TEXREG_SS2] |=
            (SS2_SHADOW_ENABLE |
             intel_translate_shadow_compare_func(sampler->CompareFunc));

         minFilt = FILTER_4X4_FLAT;
         magFilt = FILTER_4X4_FLAT;
      }

      state[I915_TEXREG_SS2] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
                                 (mipFilt << SS2_MIP_FILTER_SHIFT) |
                                 (magFilt << SS2_MAG_FILTER_SHIFT) |
                                 aniso);
   }

   {
      GLenum ws = sampler->WrapS;
      GLenum wt = sampler->WrapT;
      GLenum wr = sampler->WrapR;
      float minlod;

      /* We program 1D textures as 2D textures, so the 2D texcoord could
       * result in sampling border values if we don't set the T wrap to
       * repeat.
       */
      if (tObj->Target == GL_TEXTURE_1D)
	 wt = GL_REPEAT;

      /* 3D textures don't seem to respect the border color.
       * Fallback if there's ever a danger that they might refer to
       * it.  
       * 
       * Effectively this means fallback on 3D clamp or
       * clamp_to_border.
       */
      if (tObj->Target == GL_TEXTURE_3D &&
          (sampler->MinFilter != GL_NEAREST ||
           sampler->MagFilter != GL_NEAREST) &&
          (ws == GL_CLAMP ||
           wt == GL_CLAMP ||
           wr == GL_CLAMP ||
           ws == GL_CLAMP_TO_BORDER ||
           wt == GL_CLAMP_TO_BORDER || wr == GL_CLAMP_TO_BORDER))
         return false;

      /* Only support TEXCOORDMODE_CLAMP_EDGE and TEXCOORDMODE_CUBE (not 
       * used) when using cube map texture coordinates
       */
      if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
          (((ws != GL_CLAMP) && (ws != GL_CLAMP_TO_EDGE)) ||
           ((wt != GL_CLAMP) && (wt != GL_CLAMP_TO_EDGE))))
          return false;

      /*
       * According to 3DSTATE_MAP_STATE at page of 104 in Bspec
       * Vol3d 3D Instructions:
       *   [DevGDG and DevAlv]: Must be a power of 2 for cube maps.
       *   [DevLPT, DevCST and DevBLB]: If not a power of 2, cube maps
       *      must have all faces enabled.
       *
       * But, as I tested on pineview(DevBLB derived), the rendering is
       * bad(you will find the color isn't samplered right in some
       * fragments). After checking, it seems that the texture layout is
       * wrong: making the width and height align of 4(although this
       * doesn't make much sense) will fix this issue and also broke some
       * others. Well, Bspec mentioned nothing about the layout alignment
       * and layout for NPOT cube map.  I guess the Bspec just assume it's
       * a POT cube map.
       *
       * Thus, I guess we need do this for other platforms as well.
       */
      if (tObj->Target == GL_TEXTURE_CUBE_MAP_ARB &&
          !is_power_of_two(firstImage->Height))
         return false;

      state[I915_TEXREG_SS3] = ss3;     /* SS3_NORMALIZED_COORDS */

      state[I915_TEXREG_SS3] |=
         ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
          (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
          (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));

      minlod = MIN2(sampler->MinLod, tObj->_MaxLevel - tObj->BaseLevel);
      state[I915_TEXREG_SS3] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT);
      state[I915_TEXREG_SS3] |= (U_FIXED(CLAMP(minlod, 0.0, 11.0), 4) <<
				 SS3_MIN_LOD_SHIFT);

   }

   /* convert border color from float to ubyte */
   CLAMPED_FLOAT_TO_UBYTE(border[0], sampler->BorderColor.f[0]);
   CLAMPED_FLOAT_TO_UBYTE(border[1], sampler->BorderColor.f[1]);
   CLAMPED_FLOAT_TO_UBYTE(border[2], sampler->BorderColor.f[2]);
   CLAMPED_FLOAT_TO_UBYTE(border[3], sampler->BorderColor.f[3]);

   if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) {
      /* GL specs that border color for depth textures is taken from the
       * R channel, while the hardware uses A.  Spam R into all the channels
       * for safety.
       */
      state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[0],
					       border[0],
					       border[0],
					       border[0]);
   } else {
      state[I915_TEXREG_SS4] = PACK_COLOR_8888(border[3],
					       border[0],
					       border[1],
					       border[2]);
   }


   I915_ACTIVESTATE(i915, I915_UPLOAD_TEX(unit), true);
   /* memcmp was already disabled, but definitely won't work as the
    * region might now change and that wouldn't be detected:
    */
   I915_STATECHANGE(i915, I915_UPLOAD_TEX(unit));


#if 0
   DBG(TEXTURE, "state[I915_TEXREG_SS2] = 0x%x\n", state[I915_TEXREG_SS2]);
   DBG(TEXTURE, "state[I915_TEXREG_SS3] = 0x%x\n", state[I915_TEXREG_SS3]);
   DBG(TEXTURE, "state[I915_TEXREG_SS4] = 0x%x\n", state[I915_TEXREG_SS4]);
   DBG(TEXTURE, "state[I915_TEXREG_MS2] = 0x%x\n", state[I915_TEXREG_MS2]);
   DBG(TEXTURE, "state[I915_TEXREG_MS3] = 0x%x\n", state[I915_TEXREG_MS3]);
   DBG(TEXTURE, "state[I915_TEXREG_MS4] = 0x%x\n", state[I915_TEXREG_MS4]);
#endif

   return true;
}