From a632128ffaeabba09135e8590ccd73d2f1063282 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Sun, 22 Oct 2006 22:36:24 +0000 Subject: minor tweaks good for about 12% faster execution --- src/mesa/swrast/s_nvfragprog.c | 137 +++++++++++++++++++++-------------------- 1 file changed, 71 insertions(+), 66 deletions(-) (limited to 'src/mesa') diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c index 20fbd5060b9..bd9007efaf3 100644 --- a/src/mesa/swrast/s_nvfragprog.c +++ b/src/mesa/swrast/s_nvfragprog.c @@ -153,40 +153,33 @@ get_register_pointer( GLcontext *ctx, const struct fp_machine *machine, const struct gl_fragment_program *program ) { - const GLfloat *src; switch (source->File) { - case PROGRAM_TEMPORARY: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_TEMPS); - src = machine->Temporaries[source->Index]; - break; - case PROGRAM_INPUT: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_INPUTS); - src = machine->Inputs[source->Index]; - break; - case PROGRAM_OUTPUT: - /* This is only for PRINT */ - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_OUTPUTS); - src = machine->Outputs[source->Index]; - break; - case PROGRAM_LOCAL_PARAM: - ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); - src = program->Base.LocalParams[source->Index]; - break; - case PROGRAM_ENV_PARAM: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_PARAMS); - src = ctx->FragmentProgram.Parameters[source->Index]; - break; - case PROGRAM_STATE_VAR: - /* Fallthrough */ - case PROGRAM_NAMED_PARAM: - ASSERT(source->Index < (GLint) program->Base.Parameters->NumParameters); - src = program->Base.Parameters->ParameterValues[source->Index]; - break; - default: - _mesa_problem(ctx, "Invalid input register file %d in fetch_vector4", source->File); - src = NULL; + case PROGRAM_TEMPORARY: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_TEMPS); + return machine->Temporaries[source->Index]; + case PROGRAM_INPUT: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_INPUTS); + return machine->Inputs[source->Index]; + case PROGRAM_OUTPUT: + /* This is only for PRINT */ + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_OUTPUTS); + return machine->Outputs[source->Index]; + case PROGRAM_LOCAL_PARAM: + ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); + return program->Base.LocalParams[source->Index]; + case PROGRAM_ENV_PARAM: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_PARAMS); + return ctx->FragmentProgram.Parameters[source->Index]; + case PROGRAM_STATE_VAR: + /* Fallthrough */ + case PROGRAM_NAMED_PARAM: + ASSERT(source->Index < (GLint) program->Base.Parameters->NumParameters); + return program->Base.Parameters->ParameterValues[source->Index]; + default: + _mesa_problem(ctx, "Invalid input register file %d in fetch_vector4", + source->File); + return NULL; } - return src; } @@ -204,10 +197,17 @@ fetch_vector4( GLcontext *ctx, const GLfloat *src = get_register_pointer(ctx, source, machine, program); ASSERT(src); - result[0] = src[GET_SWZ(source->Swizzle, 0)]; - result[1] = src[GET_SWZ(source->Swizzle, 1)]; - result[2] = src[GET_SWZ(source->Swizzle, 2)]; - result[3] = src[GET_SWZ(source->Swizzle, 3)]; + if (source->Swizzle == MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, + SWIZZLE_Z, SWIZZLE_W)) { + /* no swizzling */ + COPY_4V(result, src); + } + else { + result[0] = src[GET_SWZ(source->Swizzle, 0)]; + result[1] = src[GET_SWZ(source->Swizzle, 1)]; + result[2] = src[GET_SWZ(source->Swizzle, 2)]; + result[3] = src[GET_SWZ(source->Swizzle, 3)]; + } if (source->NegateBase) { result[0] = -result[0]; @@ -406,7 +406,7 @@ generate_cc( float value ) /** * Test if the ccMaskRule is satisfied by the given condition code. - * Used to mask destination writes according to the current condition codee. + * Used to mask destination writes according to the current condition code. */ static INLINE GLboolean test_cc(GLuint condCode, GLuint ccMaskRule) @@ -436,11 +436,9 @@ store_vector4( const struct prog_instruction *inst, { const struct prog_dst_register *dest = &(inst->DstReg); const GLboolean clamp = inst->SaturateMode == SATURATE_ZERO_ONE; - const GLboolean updateCC = inst->CondUpdate; GLfloat *dstReg; GLfloat dummyReg[4]; GLfloat clampedValue[4]; - GLboolean condWriteMask[4]; GLuint writeMask = dest->WriteMask; switch (dest->File) { @@ -476,39 +474,46 @@ store_vector4( const struct prog_instruction *inst, } if (dest->CondMask != COND_TR) { - condWriteMask[0] = GET_BIT(writeMask, 0) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 0)], dest->CondMask); - condWriteMask[1] = GET_BIT(writeMask, 1) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 1)], dest->CondMask); - condWriteMask[2] = GET_BIT(writeMask, 2) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 2)], dest->CondMask); - condWriteMask[3] = GET_BIT(writeMask, 3) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 3)], dest->CondMask); - - writeMask = ((condWriteMask[0] << 0) | - (condWriteMask[1] << 1) | - (condWriteMask[2] << 2) | - (condWriteMask[3] << 3)); + /* condition codes may turn off some writes */ + if (writeMask & WRITEMASK_X) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 0)], + dest->CondMask)) + writeMask &= ~WRITEMASK_X; + } + if (writeMask & WRITEMASK_Y) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 1)], + dest->CondMask)) + writeMask &= ~WRITEMASK_Y; + } + if (writeMask & WRITEMASK_Z) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 2)], + dest->CondMask)) + writeMask &= ~WRITEMASK_Z; + } + if (writeMask & WRITEMASK_W) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 3)], + dest->CondMask)) + writeMask &= ~WRITEMASK_W; + } } - if (GET_BIT(writeMask, 0)) { + if (writeMask & WRITEMASK_X) dstReg[0] = value[0]; - if (updateCC) - machine->CondCodes[0] = generate_cc(value[0]); - } - if (GET_BIT(writeMask, 1)) { + if (writeMask & WRITEMASK_Y) dstReg[1] = value[1]; - if (updateCC) - machine->CondCodes[1] = generate_cc(value[1]); - } - if (GET_BIT(writeMask, 2)) { + if (writeMask & WRITEMASK_Z) dstReg[2] = value[2]; - if (updateCC) - machine->CondCodes[2] = generate_cc(value[2]); - } - if (GET_BIT(writeMask, 3)) { + if (writeMask & WRITEMASK_W) dstReg[3] = value[3]; - if (updateCC) + + if (inst->CondUpdate) { + if (writeMask & WRITEMASK_X) + machine->CondCodes[0] = generate_cc(value[0]); + if (writeMask & WRITEMASK_Y) + machine->CondCodes[1] = generate_cc(value[1]); + if (writeMask & WRITEMASK_Z) + machine->CondCodes[2] = generate_cc(value[2]); + if (writeMask & WRITEMASK_W) machine->CondCodes[3] = generate_cc(value[3]); } } -- cgit v1.2.3