i915_state_derived.c File Reference

Include dependency graph for i915_state_derived.c:

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Functions
static void	calculate_vertex_layout (struct i915_context *i915)
	Determine the hardware vertex layout.
void	i915_update_derived (struct i915_context *i915)

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Function Documentation

static void calculate_vertex_layout

(

struct i915_context *

i915

)

[static]

Determine the hardware vertex layout.

Depends on vertex/fragment shader state.

Definition at line 44 of file i915_state_derived.c.

References assert, vertex_info::attrib, i915_rasterizer_state::color_interp, i915_context::current, i915_context::dirty, i915_context::draw, draw_compute_vertex_size(), draw_emit_vertex_attr(), draw_find_vs_output(), vertex_info::emit, EMIT_1F, EMIT_3F, EMIT_4F, EMIT_4UB, FALSE, i915_context::fs, vertex_info::hwfmt, I915_NEW_VERTEX_FORMAT, i915_fragment_shader::info, tgsi_shader_info::input_semantic_index, tgsi_shader_info::input_semantic_name, INTERP_LINEAR, INTERP_PERSPECTIVE, tgsi_shader_info::num_inputs, i915_context::rasterizer, S4_VFMT_COLOR, S4_VFMT_FOG_PARAM, S4_VFMT_SPEC_FOG, S4_VFMT_XYZ, S4_VFMT_XYZW, TEXCOORDFMT_4D, TEXCOORDFMT_NOT_PRESENT, TGSI_SEMANTIC_COLOR, TGSI_SEMANTIC_FOG, TGSI_SEMANTIC_GENERIC, TGSI_SEMANTIC_POSITION, TRUE, and i915_state::vertex_info.

{
   const struct i915_fragment_shader *fs = i915->fs;
   const enum interp_mode colorInterp = i915->rasterizer->color_interp;
   struct vertex_info vinfo;
   boolean texCoords[8], colors[2], fog, needW;
   uint i;
   int src;

   memset(texCoords, 0, sizeof(texCoords));
   colors[0] = colors[1] = fog = needW = FALSE;
   memset(&vinfo, 0, sizeof(vinfo));

   /* Determine which fragment program inputs are needed.  Setup HW vertex
    * layout below, in the HW-specific attribute order.
    */
   for (i = 0; i < fs->info.num_inputs; i++) {
      switch (fs->info.input_semantic_name[i]) {
      case TGSI_SEMANTIC_POSITION:
         break;
      case TGSI_SEMANTIC_COLOR:
         assert(fs->info.input_semantic_index[i] < 2);
         colors[fs->info.input_semantic_index[i]] = TRUE;
         break;
      case TGSI_SEMANTIC_GENERIC:
         /* usually a texcoord */
         {
            const uint unit = fs->info.input_semantic_index[i];
            assert(unit < 8);
            texCoords[unit] = TRUE;
            needW = TRUE;
         }
         break;
      case TGSI_SEMANTIC_FOG:
         fog = TRUE;
         break;
      default:
         assert(0);
      }
   }

   
   /* pos */
   src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_POSITION, 0);
   if (needW) {
      draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_LINEAR, src);
      vinfo.hwfmt[0] |= S4_VFMT_XYZW;
      vinfo.attrib[0].emit = EMIT_4F;
   }
   else {
      draw_emit_vertex_attr(&vinfo, EMIT_3F, INTERP_LINEAR, src);
      vinfo.hwfmt[0] |= S4_VFMT_XYZ;
      vinfo.attrib[0].emit = EMIT_3F;
   }

   /* hardware point size */
   /* XXX todo */

   /* primary color */
   if (colors[0]) {
      src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_COLOR, 0);
      draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src);
      vinfo.hwfmt[0] |= S4_VFMT_COLOR;
   }

   /* secondary color */
   if (colors[1]) {
      src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_COLOR, 1);
      draw_emit_vertex_attr(&vinfo, EMIT_4UB, colorInterp, src);
      vinfo.hwfmt[0] |= S4_VFMT_SPEC_FOG;
   }

   /* fog coord, not fog blend factor */
   if (fog) {
      src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_FOG, 0);
      draw_emit_vertex_attr(&vinfo, EMIT_1F, INTERP_PERSPECTIVE, src);
      vinfo.hwfmt[0] |= S4_VFMT_FOG_PARAM;
   }

   /* texcoords */
   for (i = 0; i < 8; i++) {
      uint hwtc;
      if (texCoords[i]) {
         hwtc = TEXCOORDFMT_4D;
         src = draw_find_vs_output(i915->draw, TGSI_SEMANTIC_GENERIC, i);
         draw_emit_vertex_attr(&vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
      }
      else {
         hwtc = TEXCOORDFMT_NOT_PRESENT;
      }
      vinfo.hwfmt[1] |= hwtc << (i * 4);
   }

   draw_compute_vertex_size(&vinfo);

   if (memcmp(&i915->current.vertex_info, &vinfo, sizeof(vinfo))) {
      /* Need to set this flag so that the LIS2/4 registers get set.
       * It also means the i915_update_immediate() function must be called
       * after this one, in i915_update_derived().
       */
      i915->dirty |= I915_NEW_VERTEX_FORMAT;

      memcpy(&i915->current.vertex_info, &vinfo, sizeof(vinfo));
   }
}

void i915_update_derived

(

struct i915_context *

i915

)

Definition at line 156 of file i915_state_derived.c.

References calculate_vertex_layout(), i915_context::dirty, i915_context::hardware_dirty, I915_HW_PROGRAM, I915_HW_STATIC, I915_NEW_FRAMEBUFFER, I915_NEW_FS, I915_NEW_RASTERIZER, I915_NEW_SAMPLER, I915_NEW_TEXTURE, I915_NEW_VS, i915_update_dynamic(), i915_update_immediate(), i915_update_samplers(), and i915_update_textures().

{
   if (i915->dirty & (I915_NEW_RASTERIZER | I915_NEW_FS | I915_NEW_VS))
      calculate_vertex_layout( i915 );

   if (i915->dirty & (I915_NEW_SAMPLER | I915_NEW_TEXTURE))
      i915_update_samplers(i915);

   if (i915->dirty & I915_NEW_TEXTURE)
      i915_update_textures(i915);

   if (i915->dirty)
      i915_update_immediate( i915 );

   if (i915->dirty)
      i915_update_dynamic( i915 );

   if (i915->dirty & I915_NEW_FS) {
      i915->hardware_dirty |= I915_HW_PROGRAM; /* XXX right? */
   }

   /* HW emit currently references framebuffer state directly:
    */
   if (i915->dirty & I915_NEW_FRAMEBUFFER)
      i915->hardware_dirty |= I915_HW_STATIC;

   i915->dirty = 0;
}

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