From 8fed2466e4056668a76a87cf935b5fbff8ae15ca Mon Sep 17 00:00:00 2001 From: Brian Date: Fri, 26 Oct 2007 19:19:09 -0600 Subject: Re-implement GLSL texture sampler variables. GLSL sampler variables indicate which texture unit to use for TEX instructions. Previously, this was baked into the fragment/vertex program and couldn't be readily changed once set. Now, SamplerUnits[] array indicates which texture unit is to be used for each sampler variable. These values are set with glUniform1i(). This is extra state that must be passed to the fragment/vertex program executor at runtime. --- src/mesa/pipe/tgsi/exec/tgsi_exec.c | 5 ++++- src/mesa/pipe/tgsi/exec/tgsi_exec.h | 1 + 2 files changed, 5 insertions(+), 1 deletion(-) (limited to 'src/mesa/pipe/tgsi') diff --git a/src/mesa/pipe/tgsi/exec/tgsi_exec.c b/src/mesa/pipe/tgsi/exec/tgsi_exec.c index 0125f40dd2..66a81b4bd8 100644 --- a/src/mesa/pipe/tgsi/exec/tgsi_exec.c +++ b/src/mesa/pipe/tgsi/exec/tgsi_exec.c @@ -1219,11 +1219,14 @@ exec_tex(struct tgsi_exec_machine *mach, const struct tgsi_full_instruction *inst, boolean biasLod) { - const uint unit = inst->FullSrcRegisters[1].SrcRegister.Index; + const uint sampler = inst->FullSrcRegisters[1].SrcRegister.Index; + const uint unit = mach->SamplerUnits[sampler]; union tgsi_exec_channel r[8]; uint chan_index; float lodBias; + // printf("Sampler %u unit %u\n", sampler, unit); + switch (inst->InstructionExtTexture.Texture) { case TGSI_TEXTURE_1D: diff --git a/src/mesa/pipe/tgsi/exec/tgsi_exec.h b/src/mesa/pipe/tgsi/exec/tgsi_exec.h index 1805e72487..38f9218520 100644 --- a/src/mesa/pipe/tgsi/exec/tgsi_exec.h +++ b/src/mesa/pipe/tgsi/exec/tgsi_exec.h @@ -118,6 +118,7 @@ struct tgsi_exec_machine struct tgsi_exec_vector *Temps; struct tgsi_exec_vector *Addrs; + uint *SamplerUnits; struct tgsi_sampler *Samplers; float Imms[TGSI_EXEC_NUM_IMMEDIATES][4]; -- cgit v1.2.3