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i965/cs: Allow ARB_compute_shader to be enabled via env var.

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This will allow testing of compute shader functionality before it is
completed.

To enable ARB_compute_shader functionality in the i965 driver, set
INTEL_COMPUTE_SHADER=1.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Paul Berry
2014-01-06 15:12:05 -08:00
parent 3bbf93045a
commit 25268b930d
2 changed files with 13 additions and 1 deletions
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11
src/mesa/drivers/dri/i965/brw_context.c
View File

@@ -296,10 +296,17 @@ brw_initialize_context_constants(struct brw_context *brw)
ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits = max_samplers;
else
ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits = 0;
if (getenv("INTEL_COMPUTE_SHADER")) {
ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = BRW_MAX_TEX_UNIT;
ctx->Const.MaxUniformBufferBindings += 12;
} else {
ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 0;
}
ctx->Const.MaxCombinedTextureImageUnits =
ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits +
ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits +
ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits;
ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits +
ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits;
ctx->Const.MaxTextureLevels = 14; /* 8192 */
if (ctx->Const.MaxTextureLevels > MAX_TEXTURE_LEVELS)
@@ -423,9 +430,11 @@ brw_initialize_context_constants(struct brw_context *brw)
ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicCounters = MAX_ATOMIC_COUNTERS;
ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxAtomicBuffers = BRW_MAX_ABO;
ctx->Const.Program[MESA_SHADER_VERTEX].MaxAtomicBuffers = BRW_MAX_ABO;
ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxAtomicBuffers = BRW_MAX_ABO;
ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicBuffers = BRW_MAX_ABO;
ctx->Const.MaxCombinedAtomicBuffers = 3 * BRW_MAX_ABO;
}

3
src/mesa/drivers/dri/i965/intel_extensions.c
View File

@@ -299,6 +299,9 @@ intelInitExtensions(struct gl_context *ctx)
*/
if (ctx->API == API_OPENGL_CORE)
ctx->Extensions.ARB_viewport_array = true;
if (getenv("INTEL_COMPUTE_SHADER"))
ctx->Extensions.ARB_compute_shader = true;
}
if (brw->gen == 5 || can_write_oacontrol(brw))