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nvfx: Add support for two sided color

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This patch adds support for two-sided vertex color to nv30/nv40.

When set, the COLOR0/1 fs inputs on back faces will be wired to vs outputs BCOLOR0/1.
This makes OpenGL two sided lighting work, which can be tested with progs/demos/projtex.
This commit is contained in:
Luca Barbieri 2010-01-11 01:09:44 +01:00
parent a2ddae0fc3
commit 7fc7b75995
2 changed files with 4 additions and 2 deletions
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2
src/gallium/drivers/nvfx/nvfx_context.h
View file

@ -46,7 +46,7 @@
struct nvfx_rasterizer_state {
struct pipe_rasterizer_state pipe;
unsigned sb_len;
uint32_t sb[30];
uint32_t sb[32];
};
struct nvfx_zsa_state {

4
src/gallium/drivers/nvfx/nvfx_state.c
View file

@ -193,7 +193,6 @@ nvfx_rasterizer_state_create(struct pipe_context *pipe,
struct nouveau_statebuf_builder sb = sb_init(rsso->sb);
/*XXX: ignored:
* light_twoside
* point_smooth -nohw
* multisample
*/
@ -202,6 +201,9 @@ nvfx_rasterizer_state_create(struct pipe_context *pipe,
sb_data(sb, cso->flatshade ? NV34TCL_SHADE_MODEL_FLAT :
NV34TCL_SHADE_MODEL_SMOOTH);
sb_method(sb, NV34TCL_VERTEX_TWO_SIDE_ENABLE, 1);
sb_data(sb, cso->light_twoside);
sb_method(sb, NV34TCL_LINE_WIDTH, 2);
sb_data(sb, (unsigned char)(cso->line_width * 8.0) & 0xff);
sb_data(sb, cso->line_smooth ? 1 : 0);