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i915: Add optional support for ARB_fragment_shader under a driconf option.

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Other vendors have enabled ARB_fragment_shader as part of OpenGL 2.0
enablement even on hardware like the 915 with no dynamic branching or
dFdx/dFdy support.  But for now we'll leave it disabled because we don't
do any flattening of ifs or loops, which is rather restrictive.

This support is not complete, and may be unstable depending on your shaders.
It passes 10/15 of the piglit glsl tests, but hangs on glean glsl1.
This commit is contained in:
Eric Anholt
2009-07-29 13:00:09 -07:00
parent 67f4d626d3
commit 862a2a55b3
4 changed files with 15 additions and 3 deletions
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1
src/mesa/drivers/dri/i915/i915_fragprog.c
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@@ -160,6 +160,7 @@ src_vector(struct i915_fragment_program *p,
case PROGRAM_CONSTANT:
case PROGRAM_STATE_VAR:
case PROGRAM_NAMED_PARAM:
case PROGRAM_UNIFORM:
src =
i915_emit_param4fv(p,
program->Base.Parameters->ParameterValues[source->