From: Kenneth Graunke <kenneth@whitecape.org>
Date: Fri, 24 Aug 2018 00:24:19 +0000 (-0700)
Subject: i965: don't include compute resources in "Combined" limits
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b03dcb1e5f507c5950d0de053a6f76e6306ee71f;p=mesa.git

i965: don't include compute resources in "Combined" limits

The combined limits should only include shader stages that can be active
at the same time.  We don't need to include compute.

See also cff290df4c09547cd2cb3b129ec59bdebdadba90 for st/mesa.

Unbreaks i965 from assert failing on driver load since Marek's
45f87a48f94148b484961f18a4f1ccf86f066b1c, which dropped the core
Mesa capabilities before adjusting driver limits down to match.
---

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 6ba64e4e06d..59871ed84e2 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -421,10 +421,10 @@ brw_initialize_context_constants(struct brw_context *brw)
           ctx->Const.MaxComputeWorkGroupSize[0] >= 128),
    };
 
-   unsigned num_stages = 0;
-   for (int i = 0; i < MESA_SHADER_STAGES; i++) {
+   unsigned num_gfx_stages = 0;
+   for (int i = 0; i < MESA_SHADER_COMPUTE; i++) {
       if (stage_exists[i])
-         num_stages++;
+         num_gfx_stages++;
    }
 
    unsigned max_samplers =
@@ -505,14 +505,14 @@ brw_initialize_context_constants(struct brw_context *brw)
       MIN2(ctx->Const.MaxTextureCoordUnits,
            ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits);
 
-   ctx->Const.MaxUniformBufferBindings = num_stages * BRW_MAX_UBO;
-   ctx->Const.MaxCombinedUniformBlocks = num_stages * BRW_MAX_UBO;
-   ctx->Const.MaxCombinedAtomicBuffers = num_stages * BRW_MAX_ABO;
-   ctx->Const.MaxCombinedShaderStorageBlocks = num_stages * BRW_MAX_SSBO;
-   ctx->Const.MaxShaderStorageBufferBindings = num_stages * BRW_MAX_SSBO;
-   ctx->Const.MaxCombinedTextureImageUnits = num_stages * max_samplers;
-   ctx->Const.MaxCombinedImageUniforms = num_stages * BRW_MAX_IMAGES;
-
+   ctx->Const.MaxUniformBufferBindings = num_gfx_stages * BRW_MAX_UBO;
+   ctx->Const.MaxCombinedUniformBlocks = num_gfx_stages * BRW_MAX_UBO;
+   ctx->Const.MaxCombinedAtomicBuffers = num_gfx_stages * BRW_MAX_ABO;
+   ctx->Const.MaxCombinedShaderStorageBlocks = num_gfx_stages * BRW_MAX_SSBO;
+   ctx->Const.MaxCombinedTextureImageUnits = num_gfx_stages * max_samplers;
+   ctx->Const.MaxCombinedImageUniforms = num_gfx_stages * BRW_MAX_IMAGES;
+   ctx->Const.MaxShaderStorageBufferBindings =
+      (num_gfx_stages + stage_exists[MESA_SHADER_COMPUTE]) * BRW_MAX_SSBO;
 
    /* Hardware only supports a limited number of transform feedback buffers.
     * So we need to override the Mesa default (which is based only on software