draw: corrections to allow for different cliptest cases

[mesa.git] / src / gallium / drivers / llvmpipe / lp_setup_coef.c

diff --git a/src/gallium/drivers/llvmpipe/lp_setup_coef.c b/src/gallium/drivers/llvmpipe/lp_setup_coef.c
index 95e3e8fffe82b4a42384d25ad7551086f4684f94..8dc2688ddb604f56f8110983b526ca9a483525ac 100644 (file)
--- a/src/gallium/drivers/llvmpipe/lp_setup_coef.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_coef.c
@@ -187,11 +187,32 @@ static void setup_facing_coef( struct lp_rast_shader_inputs *inputs,
  */
 void lp_setup_tri_coef( struct lp_setup_context *setup,
                        struct lp_rast_shader_inputs *inputs,
-                       const struct lp_tri_info *info)
+                        const float (*v0)[4],
+                        const float (*v1)[4],
+                        const float (*v2)[4],
+                        boolean frontfacing)
 {
    unsigned fragcoord_usage_mask = TGSI_WRITEMASK_XYZ;
    unsigned slot;
    unsigned i;
+   struct lp_tri_info info;
+   float dx01 = v0[0][0] - v1[0][0];
+   float dy01 = v0[0][1] - v1[0][1];
+   float dx20 = v2[0][0] - v0[0][0];
+   float dy20 = v2[0][1] - v0[0][1];
+   float oneoverarea = 1.0f / (dx01 * dy20 - dx20 * dy01);
+
+   info.v0 = v0;
+   info.v1 = v1;
+   info.v2 = v2;
+   info.frontfacing = frontfacing;
+   info.x0_center = v0[0][0] - setup->pixel_offset;
+   info.y0_center = v0[0][1] - setup->pixel_offset;
+   info.dx01_ooa  = dx01 * oneoverarea;
+   info.dx20_ooa  = dx20 * oneoverarea;
+   info.dy01_ooa  = dy01 * oneoverarea;
+   info.dy20_ooa  = dy20 * oneoverarea;
+
 
    /* setup interpolation for all the remaining attributes:
     */
@@ -204,25 +225,25 @@ void lp_setup_tri_coef( struct lp_setup_context *setup,
          if (setup->flatshade_first) {
             for (i = 0; i < NUM_CHANNELS; i++)
                if (usage_mask & (1 << i))
-                  constant_coef(inputs, slot+1, info->v0[vert_attr][i], i);
+                  constant_coef(inputs, slot+1, info.v0[vert_attr][i], i);
          }
          else {
             for (i = 0; i < NUM_CHANNELS; i++)
                if (usage_mask & (1 << i))
-                  constant_coef(inputs, slot+1, info->v2[vert_attr][i], i);
+                  constant_coef(inputs, slot+1, info.v2[vert_attr][i], i);
          }
          break;
 
       case LP_INTERP_LINEAR:
          for (i = 0; i < NUM_CHANNELS; i++)
             if (usage_mask & (1 << i))
-               linear_coef(inputs, info, slot+1, vert_attr, i);
+               linear_coef(inputs, &info, slot+1, vert_attr, i);
          break;
 
       case LP_INTERP_PERSPECTIVE:
          for (i = 0; i < NUM_CHANNELS; i++)
             if (usage_mask & (1 << i))
-               perspective_coef(inputs, info, slot+1, vert_attr, i);
+               perspective_coef(inputs, &info, slot+1, vert_attr, i);
          fragcoord_usage_mask |= TGSI_WRITEMASK_W;
          break;
 
@@ -236,7 +257,7 @@ void lp_setup_tri_coef( struct lp_setup_context *setup,
          break;
 
       case LP_INTERP_FACING:
-         setup_facing_coef(inputs, slot+1, info->frontfacing, usage_mask);
+         setup_facing_coef(inputs, slot+1, info.frontfacing, usage_mask);
          break;
 
       default:
@@ -246,7 +267,7 @@ void lp_setup_tri_coef( struct lp_setup_context *setup,
 
    /* The internal position input is in slot zero:
     */
-   setup_fragcoord_coef(inputs, info, 0, fragcoord_usage_mask);
+   setup_fragcoord_coef(inputs, &info, 0, fragcoord_usage_mask);
 }
 
 #else