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i965: Change INTEL_DEBUG=vec4 to INTEL_SCALAR_VS for consistency. 

We moved to INTEL_SCALAR_* when we added more than a single stage, but
never went back and converted the VS to work that way.  Be consistent.

Also update the documentation to actually mention these debug variables.

Acked-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Kenneth Graunke 2017-06-03 12:26:29 -07:00
parent 2890a71158
commit 9cd69022d5
4 changed files with 3 additions and 4 deletions
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2
docs/envvars.html
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@ -200,10 +200,10 @@ See the <a href="xlibdriver.html">Xlib software driver page</a> for details.
<li>tes - dump shader assembly for tessellation evaluation shaders</li>
<li>tex - emit messages about textures.</li>
<li>urb - emit messages about URB setup</li>
<li>vec4 - force vec4 mode in vertex shader</li>
<li>vert - emit messages about vertex assembly</li>
<li>vs - dump shader assembly for vertex shaders</li>
</ul>
<li>INTEL_SCALAR_VS (or TCS, TES, GS) - force scalar/vec4 mode for a shader stage (Gen8-9 only)</li>
<li>INTEL_PRECISE_TRIG - if set to 1, true or yes, then the driver prefers
accuracy over performance in trig functions.</li>
</ul>

1
src/intel/common/gen_debug.c
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@ -68,7 +68,6 @@ static const struct debug_control debug_control[] = {
{ "optimizer", DEBUG_OPTIMIZER },
{ "ann", DEBUG_ANNOTATION },
{ "no8", DEBUG_NO8 },
{ "vec4", DEBUG_VEC4VS },
{ "spill_fs", DEBUG_SPILL_FS },
{ "spill_vec4", DEBUG_SPILL_VEC4 },
{ "cs", DEBUG_CS },

2
src/intel/common/gen_debug.h
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@ -69,7 +69,7 @@ extern uint64_t INTEL_DEBUG;
#define DEBUG_OPTIMIZER (1ull << 25)
#define DEBUG_ANNOTATION (1ull << 26)
#define DEBUG_NO8 (1ull << 27)
#define DEBUG_VEC4VS (1ull << 28)
/* Hole - feel free to reuse (1ull << 28) */
#define DEBUG_SPILL_FS (1ull << 29)
#define DEBUG_SPILL_VEC4 (1ull << 30)
#define DEBUG_CS (1ull << 31)

2
src/intel/compiler/brw_compiler.c
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@ -118,7 +118,7 @@ brw_compiler_create(void *mem_ctx, const struct gen_device_info *devinfo)
compiler->scalar_stage[i] = true;
} else {
compiler->scalar_stage[MESA_SHADER_VERTEX] =
devinfo->gen >= 8 && !(INTEL_DEBUG & DEBUG_VEC4VS);
devinfo->gen >= 8 && env_var_as_boolean("INTEL_SCALAR_VS", true);
compiler->scalar_stage[MESA_SHADER_TESS_CTRL] =
devinfo->gen >= 8 && env_var_as_boolean("INTEL_SCALAR_TCS", true);
compiler->scalar_stage[MESA_SHADER_TESS_EVAL] =