*/
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:
*/
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;
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:
/* 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
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);
#endif
*/
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 slot;
+ 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;
+
/* The internal position input is in slot zero:
*/
- linear_coef(inputs, info, 0, 0);
+ linear_coef(inputs, &info, 0, 0);
/* setup interpolation for all the remaining attributes:
*/
switch (setup->fs.input[slot].interp) {
case LP_INTERP_CONSTANT:
if (setup->flatshade_first) {
- constant_coef4(inputs, info, slot+1, info->v0[vert_attr]);
+ constant_coef4(inputs, &info, slot+1, info.v0[vert_attr]);
}
else {
- constant_coef4(inputs, info, slot+1, info->v2[vert_attr]);
+ constant_coef4(inputs, &info, slot+1, info.v2[vert_attr]);
}
break;
case LP_INTERP_LINEAR:
- linear_coef(inputs, info, slot+1, vert_attr);
+ linear_coef(inputs, &info, slot+1, vert_attr);
break;
case LP_INTERP_PERSPECTIVE:
- perspective_coef(inputs, info, slot+1, vert_attr);
+ perspective_coef(inputs, &info, slot+1, vert_attr);
break;
case LP_INTERP_POSITION:
break;
case LP_INTERP_FACING:
- setup_facing_coef(inputs, info, slot+1);
+ setup_facing_coef(inputs, &info, slot+1);
break;
default:
struct lp_rast_triangle *tri;
int x[3];
int y[3];
- float dy01, dy20;
- float dx01, dx20;
- float oneoverarea;
- struct lp_tri_info info;
int area;
struct u_rect bbox;
unsigned tri_bytes;
return TRUE;
}
-
- /*
- */
- dx01 = v0[0][0] - v1[0][0];
- dy01 = v0[0][1] - v1[0][1];
- dx20 = v2[0][0] - v0[0][0];
- dy20 = v2[0][1] - v0[0][1];
- 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 parameter interpolants:
*/
- lp_setup_tri_coef( setup, &tri->inputs, &info );
+ lp_setup_tri_coef( setup, &tri->inputs, v0, v1, v2, frontfacing );
tri->inputs.facing = frontfacing ? 1.0F : -1.0F;
tri->inputs.disable = FALSE;