summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/llvmpipe/lp_setup_coef.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_setup_coef.c')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_setup_coef.c67
1 files changed, 34 insertions, 33 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup_coef.c b/src/gallium/drivers/llvmpipe/lp_setup_coef.c
index 8dc2688ddb..a835df6af2 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup_coef.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup_coef.c
@@ -42,20 +42,19 @@
/**
* Compute a0 for a constant-valued coefficient (GL_FLAT shading).
*/
-static void constant_coef( struct lp_rast_shader_inputs *inputs,
+static void constant_coef( struct lp_tri_info *info,
unsigned slot,
const float value,
unsigned i )
{
- inputs->a0[slot][i] = value;
- inputs->dadx[slot][i] = 0.0f;
- inputs->dady[slot][i] = 0.0f;
+ info->a0[slot][i] = value;
+ info->dadx[slot][i] = 0.0f;
+ info->dady[slot][i] = 0.0f;
}
-static void linear_coef( struct lp_rast_shader_inputs *inputs,
- const struct lp_tri_info *info,
+static void linear_coef( struct lp_tri_info *info,
unsigned slot,
unsigned vert_attr,
unsigned i)
@@ -69,8 +68,8 @@ static void linear_coef( struct lp_rast_shader_inputs *inputs,
float dadx = (da01 * info->dy20_ooa - info->dy01_ooa * da20);
float dady = (da20 * info->dx01_ooa - info->dx20_ooa * da01);
- inputs->dadx[slot][i] = dadx;
- inputs->dady[slot][i] = dady;
+ info->dadx[slot][i] = dadx;
+ info->dady[slot][i] = dady;
/* calculate a0 as the value which would be sampled for the
* fragment at (0,0), taking into account that we want to sample at
@@ -84,7 +83,7 @@ static void linear_coef( struct lp_rast_shader_inputs *inputs,
* to define a0 as the sample at a pixel center somewhere near vmin
* instead - i'll switch to this later.
*/
- inputs->a0[slot][i] = a0 - (dadx * info->x0_center +
+ info->a0[slot][i] = a0 - (dadx * info->x0_center +
dady * info->y0_center);
}
@@ -97,8 +96,7 @@ static void linear_coef( struct lp_rast_shader_inputs *inputs,
* Later, when we compute the value at a particular fragment position we'll
* divide the interpolated value by the interpolated W at that fragment.
*/
-static void perspective_coef( struct lp_rast_shader_inputs *inputs,
- const struct lp_tri_info *info,
+static void perspective_coef( struct lp_tri_info *info,
unsigned slot,
unsigned vert_attr,
unsigned i)
@@ -113,9 +111,9 @@ static void perspective_coef( struct lp_rast_shader_inputs *inputs,
float dadx = da01 * info->dy20_ooa - info->dy01_ooa * da20;
float dady = da20 * info->dx01_ooa - info->dx20_ooa * da01;
- inputs->dadx[slot][i] = dadx;
- inputs->dady[slot][i] = dady;
- inputs->a0[slot][i] = a0 - (dadx * info->x0_center +
+ info->dadx[slot][i] = dadx;
+ info->dady[slot][i] = dady;
+ info->a0[slot][i] = a0 - (dadx * info->x0_center +
dady * info->y0_center);
}
@@ -127,23 +125,22 @@ static void perspective_coef( struct lp_rast_shader_inputs *inputs,
* We could do a bit less work if we'd examine gl_FragCoord's swizzle mask.
*/
static void
-setup_fragcoord_coef(struct lp_rast_shader_inputs *inputs,
- const struct lp_tri_info *info,
+setup_fragcoord_coef(struct lp_tri_info *info,
unsigned slot,
unsigned usage_mask)
{
/*X*/
if (usage_mask & TGSI_WRITEMASK_X) {
- inputs->a0[slot][0] = 0.0;
- inputs->dadx[slot][0] = 1.0;
- inputs->dady[slot][0] = 0.0;
+ info->a0[slot][0] = 0.0;
+ info->dadx[slot][0] = 1.0;
+ info->dady[slot][0] = 0.0;
}
/*Y*/
if (usage_mask & TGSI_WRITEMASK_Y) {
- inputs->a0[slot][1] = 0.0;
- inputs->dadx[slot][1] = 0.0;
- inputs->dady[slot][1] = 1.0;
+ info->a0[slot][1] = 0.0;
+ info->dadx[slot][1] = 0.0;
+ info->dady[slot][1] = 1.0;
}
/*Z*/
@@ -162,23 +159,23 @@ setup_fragcoord_coef(struct lp_rast_shader_inputs *inputs,
* Setup the fragment input attribute with the front-facing value.
* \param frontface is the triangle front facing?
*/
-static void setup_facing_coef( struct lp_rast_shader_inputs *inputs,
+static void setup_facing_coef( struct lp_tri_info *info,
unsigned slot,
boolean frontface,
unsigned usage_mask)
{
/* convert TRUE to 1.0 and FALSE to -1.0 */
if (usage_mask & TGSI_WRITEMASK_X)
- constant_coef( inputs, slot, 2.0f * frontface - 1.0f, 0 );
+ constant_coef( info, slot, 2.0f * frontface - 1.0f, 0 );
if (usage_mask & TGSI_WRITEMASK_Y)
- constant_coef( inputs, slot, 0.0f, 1 ); /* wasted */
+ constant_coef( info, slot, 0.0f, 1 ); /* wasted */
if (usage_mask & TGSI_WRITEMASK_Z)
- constant_coef( inputs, slot, 0.0f, 2 ); /* wasted */
+ constant_coef( info, slot, 0.0f, 2 ); /* wasted */
if (usage_mask & TGSI_WRITEMASK_W)
- constant_coef( inputs, slot, 0.0f, 3 ); /* wasted */
+ constant_coef( info, slot, 0.0f, 3 ); /* wasted */
}
@@ -212,6 +209,10 @@ void lp_setup_tri_coef( struct lp_setup_context *setup,
info.dx20_ooa = dx20 * oneoverarea;
info.dy01_ooa = dy01 * oneoverarea;
info.dy20_ooa = dy20 * oneoverarea;
+ info.a0 = GET_A0(inputs);
+ info.dadx = GET_DADX(inputs);
+ info.dady = GET_DADY(inputs);
+
/* setup interpolation for all the remaining attributes:
@@ -225,25 +226,25 @@ 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(&info, 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(&info, 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(&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(&info, slot+1, vert_attr, i);
fragcoord_usage_mask |= TGSI_WRITEMASK_W;
break;
@@ -257,7 +258,7 @@ 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(&info, slot+1, info.frontfacing, usage_mask);
break;
default:
@@ -267,7 +268,7 @@ 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(&info, 0, fragcoord_usage_mask);
}
#else
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-26 12:17:30 +0000