fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-01-06 08:50:09 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

i965: define, use BRW_MAX_DRAW_BUFFERS

Browse source 
i965 might support more than 4 color draw buffers.  But if not, this protects
from breakage if the Mesa limit is raised.
This commit is contained in:
Brian Paul 2009-10-29 15:01:02 -06:00
parent 7648c80ac8
commit 198ec96d36
3 changed files with 8 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
src/mesa/drivers/dri/i965/brw_context.c
View file

@ -105,6 +105,7 @@ GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
TNL_CONTEXT(ctx)->Driver.RunPipeline = _tnl_run_pipeline;
ctx->Const.MaxDrawBuffers = BRW_MAX_DRAW_BUFFERS;
ctx->Const.MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
ctx->Const.MaxTextureCoordUnits = 8; /* Mesa limit */
ctx->Const.MaxTextureUnits = MIN2(ctx->Const.MaxTextureCoordUnits,

9
src/mesa/drivers/dri/i965/brw_context.h
View file

@ -252,20 +252,23 @@ struct brw_vs_ouput_sizes {
/** Number of texture sampler units */
#define BRW_MAX_TEX_UNIT 16
/** Max number of render targets in a shader */
#define BRW_MAX_DRAW_BUFFERS 4
/**
* Size of our surface binding table for the WM.
* This contains pointers to the drawing surfaces and current texture
* objects and shader constant buffers (+2).
*/
#define BRW_WM_MAX_SURF (MAX_DRAW_BUFFERS + BRW_MAX_TEX_UNIT + 1)
#define BRW_WM_MAX_SURF (BRW_MAX_DRAW_BUFFERS + BRW_MAX_TEX_UNIT + 1)
/**
* Helpers to convert drawing buffers, textures and constant buffers
* to surface binding table indexes, for WM.
*/
#define SURF_INDEX_DRAW(d) (d)
#define SURF_INDEX_FRAG_CONST_BUFFER (MAX_DRAW_BUFFERS)
#define SURF_INDEX_TEXTURE(t) (MAX_DRAW_BUFFERS + 1 + (t))
#define SURF_INDEX_FRAG_CONST_BUFFER (BRW_MAX_DRAW_BUFFERS)
#define SURF_INDEX_TEXTURE(t) (BRW_MAX_DRAW_BUFFERS + 1 + (t))
/**
* Size of surface binding table for the VS.

2
src/mesa/drivers/dri/i965/brw_wm_surface_state.c
View file

@ -709,7 +709,7 @@ static void prepare_wm_surfaces(struct brw_context *brw )
}
old_nr_surfaces = brw->wm.nr_surfaces;
brw->wm.nr_surfaces = MAX_DRAW_BUFFERS;
brw->wm.nr_surfaces = BRW_MAX_DRAW_BUFFERS;
if (brw->wm.surf_bo[SURF_INDEX_FRAG_CONST_BUFFER] != NULL)
brw->wm.nr_surfaces = SURF_INDEX_FRAG_CONST_BUFFER + 1;