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nvfx: match Gallium's gl_PointCoord brokenness

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Gallium always puts gl_PointCoord in GENERIC[0] if
point_quad_rasterization is enabled.

This is silly, but for now it makes mesa-demos/glsl/pointcoord work.
This commit is contained in:
Luca Barbieri 2010-08-23 15:20:31 +02:00
parent bfaa2577c6
commit 2e215bc28f
1 changed files with 5 additions and 2 deletions
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7
src/gallium/drivers/nvfx/nvfx_fragprog.c
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@ -1181,8 +1181,11 @@ nvfx_fragprog_validate(struct nvfx_context *nvfx)
struct nouveau_channel* chan = nvfx->screen->base.channel;
struct nvfx_pipe_fragment_program *pfp = nvfx->fragprog;
struct nvfx_vertex_program* vp;
unsigned sprite_coord_enable = nvfx->rasterizer->pipe.point_quad_rasterization * nvfx->rasterizer->pipe.sprite_coord_enable;
// TODO: correct or flipped?
/* Gallium always puts the point coord in GENERIC[0]
* TODO: this is wrong, Gallium needs to be fixed
*/
unsigned sprite_coord_enable = nvfx->rasterizer->pipe.point_quad_rasterization * (nvfx->rasterizer->pipe.sprite_coord_enable | 1);
boolean emulate_sprite_flipping = sprite_coord_enable && nvfx->rasterizer->pipe.sprite_coord_mode;
unsigned key = emulate_sprite_flipping;
struct nvfx_fragment_program* fp;