#include "draw_vs.h"
#include "draw_pipe.h"
#include "draw_fs.h"
+#include "draw_gs.h"
/** Set to 1 to enable printing of coords before/after clipping */
{
int k;
t_nopersp = t;
- for (k = 0; k < 2; k++)
- if (in->data[pos_attr][k] != out->data[pos_attr][k]) {
- t_nopersp = (dst->data[pos_attr][k] - out->data[pos_attr][k]) /
- (in->data[pos_attr][k] - out->data[pos_attr][k]);
+ /* find either in.x != out.x or in.y != out.y */
+ for (k = 0; k < 2; k++) {
+ if (in->clip[k] != out->clip[k]) {
+ /* do divide by W, then compute linear interpolation factor */
+ float in_coord = in->clip[k] / in->clip[3];
+ float out_coord = out->clip[k] / out->clip[3];
+ float dst_coord = dst->clip[k] / dst->clip[3];
+ t_nopersp = (dst_coord - out_coord) / (in_coord - out_coord);
break;
}
+ }
}
/* Other attributes
{
struct clip_stage *clipper = clip_stage( stage );
const struct draw_vertex_shader *vs = stage->draw->vs.vertex_shader;
+ const struct draw_geometry_shader *gs = stage->draw->gs.geometry_shader;
const struct draw_fragment_shader *fs = stage->draw->fs.fragment_shader;
uint i;
+ const struct tgsi_shader_info *vs_info = gs ? &gs->info : &vs->info;
/* We need to know for each attribute what kind of interpolation is
* done on it (flat, smooth or noperspective). But the information
clipper->num_flat_attribs = 0;
memset(clipper->noperspective_attribs, 0, sizeof(clipper->noperspective_attribs));
- for (i = 0; i < vs->info.num_outputs; i++) {
+ for (i = 0; i < vs_info->num_outputs; i++) {
/* Find the interpolation mode for a specific attribute
*/
int interp;
/* If it's gl_{Front,Back}{,Secondary}Color, pick up the mode
* from the array we've filled before. */
- if (vs->info.output_semantic_name[i] == TGSI_SEMANTIC_COLOR ||
- vs->info.output_semantic_name[i] == TGSI_SEMANTIC_BCOLOR) {
- interp = indexed_interp[vs->info.output_semantic_index[i]];
+ if (vs_info->output_semantic_name[i] == TGSI_SEMANTIC_COLOR ||
+ vs_info->output_semantic_name[i] == TGSI_SEMANTIC_BCOLOR) {
+ interp = indexed_interp[vs_info->output_semantic_index[i]];
} else {
/* Otherwise, search in the FS inputs, with a decent default
* if we don't find it.
interp = TGSI_INTERPOLATE_PERSPECTIVE;
if (fs) {
for (j = 0; j < fs->info.num_inputs; j++) {
- if (vs->info.output_semantic_name[i] == fs->info.input_semantic_name[j] &&
- vs->info.output_semantic_index[i] == fs->info.input_semantic_index[j]) {
+ if (vs_info->output_semantic_name[i] == fs->info.input_semantic_name[j] &&
+ vs_info->output_semantic_index[i] == fs->info.input_semantic_index[j]) {
interp = fs->info.input_interpolate[j];
break;
}