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r300g: fix gl_PointCoord

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Is this hackish or is this the correct way to use point_quad_rasterization?
Copied from nvfx.
This commit is contained in:
Marek Olšák 2010-08-25 04:55:01 +02:00
parent 3a97ec7f48
commit 879a730231
1 changed files with 7 additions and 2 deletions
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9
src/gallium/drivers/r300/r300_state.c
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@ -950,6 +950,11 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
rs->rs = *state;
rs->rs_draw = *state;
/* Generate point sprite texture coordinates in GENERIC0
* if point_quad_rasterization is TRUE. */
rs->rs.sprite_coord_enable = state->point_quad_rasterization *
(state->sprite_coord_enable | 1);
/* Override some states for Draw. */
rs->rs_draw.sprite_coord_enable = 0; /* We can do this in HW. */
@ -1051,10 +1056,10 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
/* Point sprites */
stuffing_enable = 0;
if (state->sprite_coord_enable) {
if (rs->rs.sprite_coord_enable) {
stuffing_enable = R300_GB_POINT_STUFF_ENABLE;
for (i = 0; i < 8; i++) {
if (state->sprite_coord_enable & (1 << i))
if (rs->rs.sprite_coord_enable & (1 << i))
stuffing_enable |=
R300_GB_TEX_ST << (R300_GB_TEX0_SOURCE_SHIFT + (i*2));
}