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st/mesa: add color varyings to MaxVarying

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The linker now adds color varyings to the number of used varyings and checks
against that limit.

NOTE: This is a candidate for the 7.11 branch.
This commit is contained in:
Marek Olšák
2011-11-22 15:05:29 +01:00
parent 592323de1e
commit 1ded658ce0
1 changed files with 4 additions and 6 deletions
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10
src/mesa/state_tracker/st_extensions.c
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@@ -210,12 +210,10 @@ void st_init_limits(struct st_context *st)
options->MaxUnrollIterations = MIN2(screen->get_shader_param(screen, sh, PIPE_SHADER_CAP_MAX_INSTRUCTIONS), 65536);
}
/* PIPE_CAP_MAX_FS_INPUTS specifies the number of COLORn + GENERICn inputs
* and is set in MaxNativeAttribs. It's always 2 colors + N generic
* attributes. The GLSL compiler never uses COLORn for varyings, so we
* subtract the 2 colors to get the maximum number of varyings (generic
* attributes) supported by a driver. */
c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INPUTS) - 2;
/* PIPE_SHADER_CAP_MAX_INPUTS for the FS specifies the maximum number
* of inputs. It's always 2 colors + N generic inputs. */
c->MaxVarying = screen->get_shader_param(screen, PIPE_SHADER_FRAGMENT,
PIPE_SHADER_CAP_MAX_INPUTS);
c->MaxVarying = MIN2(c->MaxVarying, MAX_VARYING);
c->MinProgramTexelOffset = screen->get_param(screen, PIPE_CAP_MIN_TEXEL_OFFSET);