diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/compiler/radeon_program_pair.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_program_pair.c | 896 |
1 files changed, 11 insertions, 885 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.c b/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.c index 4c26db5d24..ee839596aa 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2008 Nicolai Haehnle. + * Copyright (C) 2008-2009 Nicolai Haehnle. * * All Rights Reserved. * @@ -25,584 +25,29 @@ * */ -/** - * @file - * - * Perform temporary register allocation and attempt to pair off instructions - * in RGB and Alpha pairs. Also attempts to optimize the TEX instruction - * vs. ALU instruction scheduling. - */ - #include "radeon_program_pair.h" -#include "memory_pool.h" -#include "radeon_compiler.h" -#include "shader/prog_print.h" - -#define error(fmt, args...) do { \ - rc_error(&s->Compiler->Base, "%s::%s(): " fmt "\n", \ - __FILE__, __FUNCTION__, ##args); \ -} while(0) - -struct pair_state_instruction { - struct prog_instruction Instruction; - GLuint IP; /**< Position of this instruction in original program */ - - GLuint IsTex:1; /**< Is a texture instruction */ - GLuint NeedRGB:1; /**< Needs the RGB ALU */ - GLuint NeedAlpha:1; /**< Needs the Alpha ALU */ - GLuint IsTranscendent:1; /**< Is a special transcendent instruction */ - - /** - * Number of (read and write) dependencies that must be resolved before - * this instruction can be scheduled. - */ - GLuint NumDependencies:5; - - /** - * Next instruction in the linked list of ready instructions. - */ - struct pair_state_instruction *NextReady; - - /** - * Values that this instruction writes - */ - struct reg_value *Values[4]; -}; - - -/** - * Used to keep track of which instructions read a value. - */ -struct reg_value_reader { - struct pair_state_instruction *Reader; - struct reg_value_reader *Next; -}; - -/** - * Used to keep track which values are stored in each component of a - * PROGRAM_TEMPORARY. - */ -struct reg_value { - struct pair_state_instruction *Writer; - struct reg_value *Next; /**< Pointer to the next value to be written to the same PROGRAM_TEMPORARY component */ - - /** - * Unordered linked list of instructions that read from this value. - */ - struct reg_value_reader *Readers; - - /** - * Number of readers of this value. This is calculated during @ref scan_instructions - * and continually decremented during code emission. - * When this count reaches zero, the instruction that writes the @ref Next value - * can be scheduled. - */ - GLuint NumReaders; -}; - -/** - * Used to translate a PROGRAM_INPUT or PROGRAM_TEMPORARY Mesa register - * to the proper hardware temporary. - */ -struct pair_register_translation { - GLuint Allocated:1; - GLuint HwIndex:8; - GLuint RefCount:23; /**< # of times this occurs in an unscheduled instruction SrcReg or DstReg */ - - /** - * Notes the value that is currently contained in each component - * (only used for PROGRAM_TEMPORARY registers). - */ - struct reg_value *Value[4]; -}; - -struct pair_state { - struct r300_fragment_program_compiler * Compiler; - const struct radeon_pair_handler *Handler; - GLboolean Verbose; - void *UserData; - - /** - * Translate Mesa registers to hardware registers - */ - struct pair_register_translation Inputs[FRAG_ATTRIB_MAX]; - struct pair_register_translation Temps[MAX_PROGRAM_TEMPS]; - - struct { - GLuint RefCount; /**< # of times this occurs in an unscheduled SrcReg or DstReg */ - } HwTemps[128]; - - /** - * Linked list of instructions that can be scheduled right now, - * based on which ALU/TEX resources they require. - */ - struct pair_state_instruction *ReadyFullALU; - struct pair_state_instruction *ReadyRGB; - struct pair_state_instruction *ReadyAlpha; - struct pair_state_instruction *ReadyTEX; -}; - - -static struct pair_register_translation *get_register(struct pair_state *s, GLuint file, GLuint index) -{ - switch(file) { - case PROGRAM_TEMPORARY: return &s->Temps[index]; - case PROGRAM_INPUT: return &s->Inputs[index]; - default: return 0; - } -} - -static void alloc_hw_reg(struct pair_state *s, GLuint file, GLuint index, GLuint hwindex) -{ - struct pair_register_translation *t = get_register(s, file, index); - ASSERT(!s->HwTemps[hwindex].RefCount); - ASSERT(!t->Allocated); - s->HwTemps[hwindex].RefCount = t->RefCount; - t->Allocated = 1; - t->HwIndex = hwindex; -} - -static GLuint get_hw_reg(struct pair_state *s, GLuint file, GLuint index) -{ - GLuint hwindex; - - struct pair_register_translation *t = get_register(s, file, index); - if (!t) { - error("get_hw_reg: %i[%i]\n", file, index); - return 0; - } - - if (t->Allocated) - return t->HwIndex; - - for(hwindex = 0; hwindex < s->Handler->MaxHwTemps; ++hwindex) - if (!s->HwTemps[hwindex].RefCount) - break; - - if (hwindex >= s->Handler->MaxHwTemps) { - error("Ran out of hardware temporaries"); - return 0; - } - - alloc_hw_reg(s, file, index, hwindex); - return hwindex; -} - - -static void deref_hw_reg(struct pair_state *s, GLuint hwindex) -{ - if (!s->HwTemps[hwindex].RefCount) { - error("Hwindex %i refcount error", hwindex); - return; - } - - s->HwTemps[hwindex].RefCount--; -} - -static void add_pairinst_to_list(struct pair_state_instruction **list, struct pair_state_instruction *pairinst) -{ - pairinst->NextReady = *list; - *list = pairinst; -} - -/** - * The given instruction has become ready. Link it into the ready - * instructions. - */ -static void instruction_ready(struct pair_state *s, struct pair_state_instruction *pairinst) -{ - if (s->Verbose) - _mesa_printf("instruction_ready(%i)\n", pairinst->IP); - - if (pairinst->IsTex) - add_pairinst_to_list(&s->ReadyTEX, pairinst); - else if (!pairinst->NeedAlpha) - add_pairinst_to_list(&s->ReadyRGB, pairinst); - else if (!pairinst->NeedRGB) - add_pairinst_to_list(&s->ReadyAlpha, pairinst); - else - add_pairinst_to_list(&s->ReadyFullALU, pairinst); -} - - -/** - * Finally rewrite ADD, MOV, MUL as the appropriate native instruction - * and reverse the order of arguments for CMP. - */ -static void final_rewrite(struct pair_state *s, struct prog_instruction *inst) -{ - struct prog_src_register tmp; - - switch(inst->Opcode) { - case OPCODE_ADD: - inst->SrcReg[2] = inst->SrcReg[1]; - inst->SrcReg[1].File = PROGRAM_BUILTIN; - inst->SrcReg[1].Swizzle = SWIZZLE_1111; - inst->SrcReg[1].Negate = NEGATE_NONE; - inst->Opcode = OPCODE_MAD; - break; - case OPCODE_CMP: - tmp = inst->SrcReg[2]; - inst->SrcReg[2] = inst->SrcReg[0]; - inst->SrcReg[0] = tmp; - break; - case OPCODE_MOV: - /* AMD say we should use CMP. - * However, when we transform - * KIL -r0; - * into - * CMP tmp, -r0, -r0, 0; - * KIL tmp; - * we get incorrect behaviour on R500 when r0 == 0.0. - * It appears that the R500 KIL hardware treats -0.0 as less - * than zero. - */ - inst->SrcReg[1].File = PROGRAM_BUILTIN; - inst->SrcReg[1].Swizzle = SWIZZLE_1111; - inst->SrcReg[2].File = PROGRAM_BUILTIN; - inst->SrcReg[2].Swizzle = SWIZZLE_0000; - inst->Opcode = OPCODE_MAD; - break; - case OPCODE_MUL: - inst->SrcReg[2].File = PROGRAM_BUILTIN; - inst->SrcReg[2].Swizzle = SWIZZLE_0000; - inst->Opcode = OPCODE_MAD; - break; - default: - /* nothing to do */ - break; - } -} - - -/** - * Classify an instruction according to which ALUs etc. it needs - */ -static void classify_instruction(struct pair_state *s, - struct pair_state_instruction *psi) -{ - psi->NeedRGB = (psi->Instruction.DstReg.WriteMask & WRITEMASK_XYZ) ? 1 : 0; - psi->NeedAlpha = (psi->Instruction.DstReg.WriteMask & WRITEMASK_W) ? 1 : 0; - - switch(psi->Instruction.Opcode) { - case OPCODE_ADD: - case OPCODE_CMP: - case OPCODE_DDX: - case OPCODE_DDY: - case OPCODE_FRC: - case OPCODE_MAD: - case OPCODE_MAX: - case OPCODE_MIN: - case OPCODE_MOV: - case OPCODE_MUL: - break; - case OPCODE_COS: - case OPCODE_EX2: - case OPCODE_LG2: - case OPCODE_RCP: - case OPCODE_RSQ: - case OPCODE_SIN: - psi->IsTranscendent = 1; - psi->NeedAlpha = 1; - break; - case OPCODE_DP4: - psi->NeedAlpha = 1; - /* fall through */ - case OPCODE_DP3: - psi->NeedRGB = 1; - break; - case OPCODE_KIL: - case OPCODE_TEX: - case OPCODE_TXB: - case OPCODE_TXP: - case OPCODE_END: - psi->IsTex = 1; - break; - default: - error("Unknown opcode %d\n", psi->Instruction.Opcode); - break; - } -} - - -/** - * Count which (input, temporary) register is read and written how often, - * and scan the instruction stream to find dependencies. - */ -static void scan_instructions(struct pair_state *s) -{ - struct rc_instruction *source; - GLuint ip; - - for(source = s->Compiler->Base.Program.Instructions.Next, ip = 0; - source != &s->Compiler->Base.Program.Instructions; - source = source->Next, ++ip) { - struct pair_state_instruction *pairinst = memory_pool_malloc(&s->Compiler->Base.Pool, sizeof(*pairinst)); - memset(pairinst, 0, sizeof(struct pair_state_instruction)); - - pairinst->Instruction = source->I; - pairinst->IP = ip; - final_rewrite(s, &pairinst->Instruction); - classify_instruction(s, pairinst); - - int nsrc = _mesa_num_inst_src_regs(pairinst->Instruction.Opcode); - int j; - for(j = 0; j < nsrc; j++) { - struct pair_register_translation *t = - get_register(s, pairinst->Instruction.SrcReg[j].File, pairinst->Instruction.SrcReg[j].Index); - if (!t) - continue; - - t->RefCount++; - - if (pairinst->Instruction.SrcReg[j].File == PROGRAM_TEMPORARY) { - int i; - for(i = 0; i < 4; ++i) { - GLuint swz = GET_SWZ(pairinst->Instruction.SrcReg[j].Swizzle, i); - if (swz >= 4) - continue; /* constant or NIL swizzle */ - if (!t->Value[swz]) - continue; /* this is an undefined read */ - - /* Do not add a dependency if this instruction - * also rewrites the value. The code below adds - * a dependency for the DstReg, which is a superset - * of the SrcReg dependency. */ - if (pairinst->Instruction.DstReg.File == PROGRAM_TEMPORARY && - pairinst->Instruction.DstReg.Index == pairinst->Instruction.SrcReg[j].Index && - GET_BIT(pairinst->Instruction.DstReg.WriteMask, swz)) - continue; - - struct reg_value_reader* r = memory_pool_malloc(&s->Compiler->Base.Pool, sizeof(*r)); - pairinst->NumDependencies++; - t->Value[swz]->NumReaders++; - r->Reader = pairinst; - r->Next = t->Value[swz]->Readers; - t->Value[swz]->Readers = r; - } - } - } - - int ndst = _mesa_num_inst_dst_regs(pairinst->Instruction.Opcode); - if (ndst) { - struct pair_register_translation *t = - get_register(s, pairinst->Instruction.DstReg.File, pairinst->Instruction.DstReg.Index); - if (t) { - t->RefCount++; - - if (pairinst->Instruction.DstReg.File == PROGRAM_TEMPORARY) { - int j; - for(j = 0; j < 4; ++j) { - if (!GET_BIT(pairinst->Instruction.DstReg.WriteMask, j)) - continue; - - struct reg_value* v = memory_pool_malloc(&s->Compiler->Base.Pool, sizeof(*v)); - memset(v, 0, sizeof(struct reg_value)); - v->Writer = pairinst; - if (t->Value[j]) { - pairinst->NumDependencies++; - t->Value[j]->Next = v; - } - t->Value[j] = v; - pairinst->Values[j] = v; - } - } - } - } - - if (s->Verbose) - _mesa_printf("scan(%i): NumDeps = %i\n", ip, pairinst->NumDependencies); - - if (!pairinst->NumDependencies) - instruction_ready(s, pairinst); - } - - /* Clear the PROGRAM_TEMPORARY state */ - int i, j; - for(i = 0; i < MAX_PROGRAM_TEMPS; ++i) { - for(j = 0; j < 4; ++j) - s->Temps[i].Value[j] = 0; - } -} - - -static void decrement_dependencies(struct pair_state *s, struct pair_state_instruction *pairinst) -{ - ASSERT(pairinst->NumDependencies > 0); - if (!--pairinst->NumDependencies) - instruction_ready(s, pairinst); -} /** - * Update the dependency tracking state based on what the instruction - * at the given IP does. + * Return the source slot where we installed the given register access, + * or -1 if no slot was free anymore. */ -static void commit_instruction(struct pair_state *s, struct pair_state_instruction *pairinst) -{ - struct prog_instruction *inst = &pairinst->Instruction; - - if (s->Verbose) - _mesa_printf("commit_instruction(%i)\n", pairinst->IP); - - if (inst->DstReg.File == PROGRAM_TEMPORARY) { - struct pair_register_translation *t = &s->Temps[inst->DstReg.Index]; - deref_hw_reg(s, t->HwIndex); - - int i; - for(i = 0; i < 4; ++i) { - if (!GET_BIT(inst->DstReg.WriteMask, i)) - continue; - - t->Value[i] = pairinst->Values[i]; - if (t->Value[i]->NumReaders) { - struct reg_value_reader *r; - for(r = pairinst->Values[i]->Readers; r; r = r->Next) - decrement_dependencies(s, r->Reader); - } else if (t->Value[i]->Next) { - /* This happens when the only reader writes - * the register at the same time */ - decrement_dependencies(s, t->Value[i]->Next->Writer); - } - } - } - - int nsrc = _mesa_num_inst_src_regs(inst->Opcode); - int i; - for(i = 0; i < nsrc; i++) { - struct pair_register_translation *t = get_register(s, inst->SrcReg[i].File, inst->SrcReg[i].Index); - if (!t) - continue; - - deref_hw_reg(s, get_hw_reg(s, inst->SrcReg[i].File, inst->SrcReg[i].Index)); - - if (inst->SrcReg[i].File != PROGRAM_TEMPORARY) - continue; - - int j; - for(j = 0; j < 4; ++j) { - GLuint swz = GET_SWZ(inst->SrcReg[i].Swizzle, j); - if (swz >= 4) - continue; - if (!t->Value[swz]) - continue; - - /* Do not free a dependency if this instruction - * also rewrites the value. See scan_instructions. */ - if (inst->DstReg.File == PROGRAM_TEMPORARY && - inst->DstReg.Index == inst->SrcReg[i].Index && - GET_BIT(inst->DstReg.WriteMask, swz)) - continue; - - if (!--t->Value[swz]->NumReaders) { - if (t->Value[swz]->Next) - decrement_dependencies(s, t->Value[swz]->Next->Writer); - } - } - } -} - - -/** - * Emit all ready texture instructions in a single block. - * - * Emit as a single block to (hopefully) sample many textures in parallel, - * and to avoid hardware indirections on R300. - * - * In R500, we don't really know when the result of a texture instruction - * arrives. So allocate all destinations first, to make sure they do not - * arrive early and overwrite a texture coordinate we're going to use later - * in the block. - */ -static void emit_all_tex(struct pair_state *s) -{ - struct pair_state_instruction *readytex; - struct pair_state_instruction *pairinst; - - ASSERT(s->ReadyTEX); - - // Don't let the ready list change under us! - readytex = s->ReadyTEX; - s->ReadyTEX = 0; - - // Allocate destination hardware registers in one block to avoid conflicts. - for(pairinst = readytex; pairinst; pairinst = pairinst->NextReady) { - struct prog_instruction *inst = &pairinst->Instruction; - if (inst->Opcode != OPCODE_KIL) - get_hw_reg(s, inst->DstReg.File, inst->DstReg.Index); - } - - if (s->Compiler->Base.Debug) - _mesa_printf(" BEGIN_TEX\n"); - - if (s->Handler->BeginTexBlock) - s->Compiler->Base.Error = s->Compiler->Base.Error || !s->Handler->BeginTexBlock(s->UserData); - - for(pairinst = readytex; pairinst; pairinst = pairinst->NextReady) { - struct prog_instruction *inst = &pairinst->Instruction; - commit_instruction(s, pairinst); - - if (inst->Opcode != OPCODE_KIL) - inst->DstReg.Index = get_hw_reg(s, inst->DstReg.File, inst->DstReg.Index); - inst->SrcReg[0].Index = get_hw_reg(s, inst->SrcReg[0].File, inst->SrcReg[0].Index); - - if (s->Compiler->Base.Debug) { - _mesa_printf(" "); - _mesa_print_instruction(inst); - fflush(stderr); - } - - struct radeon_pair_texture_instruction rpti; - - switch(inst->Opcode) { - case OPCODE_TEX: rpti.Opcode = RADEON_OPCODE_TEX; break; - case OPCODE_TXB: rpti.Opcode = RADEON_OPCODE_TXB; break; - case OPCODE_TXP: rpti.Opcode = RADEON_OPCODE_TXP; break; - default: - case OPCODE_KIL: rpti.Opcode = RADEON_OPCODE_KIL; break; - } - - rpti.DestIndex = inst->DstReg.Index; - rpti.WriteMask = inst->DstReg.WriteMask; - rpti.TexSrcUnit = inst->TexSrcUnit; - rpti.TexSrcTarget = inst->TexSrcTarget; - rpti.SrcIndex = inst->SrcReg[0].Index; - rpti.SrcSwizzle = inst->SrcReg[0].Swizzle; - - s->Compiler->Base.Error = s->Compiler->Base.Error || !s->Handler->EmitTex(s->UserData, &rpti); - } - - if (s->Compiler->Base.Debug) - _mesa_printf(" END_TEX\n"); -} - - -static int alloc_pair_source(struct pair_state *s, struct radeon_pair_instruction *pair, - struct prog_src_register src, GLboolean rgb, GLboolean alpha) +int rc_pair_alloc_source(struct rc_pair_instruction *pair, + unsigned int rgb, unsigned int alpha, + rc_register_file file, unsigned int index) { int candidate = -1; int candidate_quality = -1; int i; - if (!rgb && !alpha) + if ((!rgb && !alpha) || file == RC_FILE_NONE) return 0; - GLuint constant; - GLuint index; - - if (src.File == PROGRAM_TEMPORARY || src.File == PROGRAM_INPUT) { - constant = 0; - index = get_hw_reg(s, src.File, src.Index); - } else { - constant = 1; - index = src.Index; - } - for(i = 0; i < 3; ++i) { int q = 0; if (rgb) { if (pair->RGB.Src[i].Used) { - if (pair->RGB.Src[i].Constant != constant || + if (pair->RGB.Src[i].File != file || pair->RGB.Src[i].Index != index) continue; q++; @@ -610,7 +55,7 @@ static int alloc_pair_source(struct pair_state *s, struct radeon_pair_instructio } if (alpha) { if (pair->Alpha.Src[i].Used) { - if (pair->Alpha.Src[i].Constant != constant || + if (pair->Alpha.Src[i].File != file || pair->Alpha.Src[i].Index != index) continue; q++; @@ -625,334 +70,15 @@ static int alloc_pair_source(struct pair_state *s, struct radeon_pair_instructio if (candidate >= 0) { if (rgb) { pair->RGB.Src[candidate].Used = 1; - pair->RGB.Src[candidate].Constant = constant; + pair->RGB.Src[candidate].File = file; pair->RGB.Src[candidate].Index = index; } if (alpha) { pair->Alpha.Src[candidate].Used = 1; - pair->Alpha.Src[candidate].Constant = constant; + pair->Alpha.Src[candidate].File = file; pair->Alpha.Src[candidate].Index = index; } } return candidate; } - -/** - * Fill the given ALU instruction's opcodes and source operands into the given pair, - * if possible. - */ -static GLboolean fill_instruction_into_pair( - struct pair_state *s, - struct radeon_pair_instruction *pair, - struct pair_state_instruction *pairinst) -{ - struct prog_instruction *inst = &pairinst->Instruction; - - ASSERT(!pairinst->NeedRGB || pair->RGB.Opcode == OPCODE_NOP); - ASSERT(!pairinst->NeedAlpha || pair->Alpha.Opcode == OPCODE_NOP); - - if (pairinst->NeedRGB) { - if (pairinst->IsTranscendent) - pair->RGB.Opcode = OPCODE_REPL_ALPHA; - else - pair->RGB.Opcode = inst->Opcode; - if (inst->SaturateMode == SATURATE_ZERO_ONE) - pair->RGB.Saturate = 1; - } - if (pairinst->NeedAlpha) { - pair->Alpha.Opcode = inst->Opcode; - if (inst->SaturateMode == SATURATE_ZERO_ONE) - pair->Alpha.Saturate = 1; - } - - int nargs = _mesa_num_inst_src_regs(inst->Opcode); - int i; - - /* Special case for DDX/DDY (MDH/MDV). */ - if (inst->Opcode == OPCODE_DDX || inst->Opcode == OPCODE_DDY) { - if (pair->RGB.Src[0].Used || pair->Alpha.Src[0].Used) - return GL_FALSE; - else - nargs++; - } - - for(i = 0; i < nargs; ++i) { - int source; - if (pairinst->NeedRGB && !pairinst->IsTranscendent) { - GLboolean srcrgb = GL_FALSE; - GLboolean srcalpha = GL_FALSE; - int j; - for(j = 0; j < 3; ++j) { - GLuint swz = GET_SWZ(inst->SrcReg[i].Swizzle, j); - if (swz < 3) - srcrgb = GL_TRUE; - else if (swz < 4) - srcalpha = GL_TRUE; - } - source = alloc_pair_source(s, pair, inst->SrcReg[i], srcrgb, srcalpha); - if (source < 0) - return GL_FALSE; - pair->RGB.Arg[i].Source = source; - pair->RGB.Arg[i].Swizzle = inst->SrcReg[i].Swizzle & 0x1ff; - pair->RGB.Arg[i].Abs = inst->SrcReg[i].Abs; - pair->RGB.Arg[i].Negate = !!(inst->SrcReg[i].Negate & (NEGATE_X | NEGATE_Y | NEGATE_Z)); - } - if (pairinst->NeedAlpha) { - GLboolean srcrgb = GL_FALSE; - GLboolean srcalpha = GL_FALSE; - GLuint swz = GET_SWZ(inst->SrcReg[i].Swizzle, pairinst->IsTranscendent ? 0 : 3); - if (swz < 3) - srcrgb = GL_TRUE; - else if (swz < 4) - srcalpha = GL_TRUE; - source = alloc_pair_source(s, pair, inst->SrcReg[i], srcrgb, srcalpha); - if (source < 0) - return GL_FALSE; - pair->Alpha.Arg[i].Source = source; - pair->Alpha.Arg[i].Swizzle = swz; - pair->Alpha.Arg[i].Abs = inst->SrcReg[i].Abs; - pair->Alpha.Arg[i].Negate = !!(inst->SrcReg[i].Negate & NEGATE_W); - } - } - - return GL_TRUE; -} - - -/** - * Fill in the destination register information. - * - * This is split from filling in source registers because we want - * to avoid allocating hardware temporaries for destinations until - * we are absolutely certain that we're going to emit a certain - * instruction pairing. - */ -static void fill_dest_into_pair( - struct pair_state *s, - struct radeon_pair_instruction *pair, - struct pair_state_instruction *pairinst) -{ - struct prog_instruction *inst = &pairinst->Instruction; - - if (inst->DstReg.File == PROGRAM_OUTPUT) { - if (inst->DstReg.Index == s->Compiler->OutputColor) { - pair->RGB.OutputWriteMask |= inst->DstReg.WriteMask & WRITEMASK_XYZ; - pair->Alpha.OutputWriteMask |= GET_BIT(inst->DstReg.WriteMask, 3); - } else if (inst->DstReg.Index == s->Compiler->OutputDepth) { - pair->Alpha.DepthWriteMask |= GET_BIT(inst->DstReg.WriteMask, 3); - } - } else { - GLuint hwindex = get_hw_reg(s, inst->DstReg.File, inst->DstReg.Index); - if (pairinst->NeedRGB) { - pair->RGB.DestIndex = hwindex; - pair->RGB.WriteMask |= inst->DstReg.WriteMask & WRITEMASK_XYZ; - } - if (pairinst->NeedAlpha) { - pair->Alpha.DestIndex = hwindex; - pair->Alpha.WriteMask |= GET_BIT(inst->DstReg.WriteMask, 3); - } - } -} - - -/** - * Find a good ALU instruction or pair of ALU instruction and emit it. - * - * Prefer emitting full ALU instructions, so that when we reach a point - * where no full ALU instruction can be emitted, we have more candidates - * for RGB/Alpha pairing. - */ -static void emit_alu(struct pair_state *s) -{ - struct radeon_pair_instruction pair; - struct pair_state_instruction *psi; - - if (s->ReadyFullALU || !(s->ReadyRGB && s->ReadyAlpha)) { - if (s->ReadyFullALU) { - psi = s->ReadyFullALU; - s->ReadyFullALU = s->ReadyFullALU->NextReady; - } else if (s->ReadyRGB) { - psi = s->ReadyRGB; - s->ReadyRGB = s->ReadyRGB->NextReady; - } else { - psi = s->ReadyAlpha; - s->ReadyAlpha = s->ReadyAlpha->NextReady; - } - - _mesa_bzero(&pair, sizeof(pair)); - fill_instruction_into_pair(s, &pair, psi); - fill_dest_into_pair(s, &pair, psi); - commit_instruction(s, psi); - } else { - struct pair_state_instruction **prgb; - struct pair_state_instruction **palpha; - - /* Some pairings might fail because they require too - * many source slots; try all possible pairings if necessary */ - for(prgb = &s->ReadyRGB; *prgb; prgb = &(*prgb)->NextReady) { - for(palpha = &s->ReadyAlpha; *palpha; palpha = &(*palpha)->NextReady) { - struct pair_state_instruction * psirgb = *prgb; - struct pair_state_instruction * psialpha = *palpha; - _mesa_bzero(&pair, sizeof(pair)); - fill_instruction_into_pair(s, &pair, psirgb); - if (!fill_instruction_into_pair(s, &pair, psialpha)) - continue; - *prgb = (*prgb)->NextReady; - *palpha = (*palpha)->NextReady; - fill_dest_into_pair(s, &pair, psirgb); - fill_dest_into_pair(s, &pair, psialpha); - commit_instruction(s, psirgb); - commit_instruction(s, psialpha); - goto success; - } - } - - /* No success in pairing; just take the first RGB instruction */ - psi = s->ReadyRGB; - s->ReadyRGB = s->ReadyRGB->NextReady; - - _mesa_bzero(&pair, sizeof(pair)); - fill_instruction_into_pair(s, &pair, psi); - fill_dest_into_pair(s, &pair, psi); - commit_instruction(s, psi); - success: ; - } - - if (s->Compiler->Base.Debug) - radeonPrintPairInstruction(&pair); - - s->Compiler->Base.Error = s->Compiler->Base.Error || !s->Handler->EmitPaired(s->UserData, &pair); -} - -/* Callback function for assigning input registers to hardware registers */ -static void alloc_helper(void * data, unsigned input, unsigned hwreg) -{ - struct pair_state * s = data; - alloc_hw_reg(s, PROGRAM_INPUT, input, hwreg); -} - -void radeonPairProgram( - struct r300_fragment_program_compiler * compiler, - const struct radeon_pair_handler* handler, void *userdata) -{ - struct pair_state s; - - _mesa_bzero(&s, sizeof(s)); - s.Compiler = compiler; - s.Handler = handler; - s.UserData = userdata; - s.Verbose = GL_FALSE && s.Compiler->Base.Debug; - - if (s.Compiler->Base.Debug) - _mesa_printf("Emit paired program\n"); - - scan_instructions(&s); - s.Compiler->AllocateHwInputs(s.Compiler, &alloc_helper, &s); - - while(!s.Compiler->Base.Error && - (s.ReadyTEX || s.ReadyRGB || s.ReadyAlpha || s.ReadyFullALU)) { - if (s.ReadyTEX) - emit_all_tex(&s); - - while(s.ReadyFullALU || s.ReadyRGB || s.ReadyAlpha) - emit_alu(&s); - } - - if (s.Compiler->Base.Debug) - _mesa_printf(" END\n"); -} - - -static void print_pair_src(int i, struct radeon_pair_instruction_source* src) -{ - _mesa_printf(" Src%i = %s[%i]", i, src->Constant ? "CNST" : "TEMP", src->Index); -} - -static const char* opcode_string(GLuint opcode) -{ - if (opcode == OPCODE_REPL_ALPHA) - return "SOP"; - else - return _mesa_opcode_string(opcode); -} - -static int num_pairinst_args(GLuint opcode) -{ - if (opcode == OPCODE_REPL_ALPHA) - return 0; - else - return _mesa_num_inst_src_regs(opcode); -} - -static char swizzle_char(GLuint swz) -{ - switch(swz) { - case SWIZZLE_X: return 'x'; - case SWIZZLE_Y: return 'y'; - case SWIZZLE_Z: return 'z'; - case SWIZZLE_W: return 'w'; - case SWIZZLE_ZERO: return '0'; - case SWIZZLE_ONE: return '1'; - case SWIZZLE_NIL: return '_'; - default: return '?'; - } -} - -void radeonPrintPairInstruction(struct radeon_pair_instruction *inst) -{ - int nargs; - int i; - - _mesa_printf(" RGB: "); - for(i = 0; i < 3; ++i) { - if (inst->RGB.Src[i].Used) - print_pair_src(i, inst->RGB.Src + i); - } - _mesa_printf("\n"); - _mesa_printf(" Alpha:"); - for(i = 0; i < 3; ++i) { - if (inst->Alpha.Src[i].Used) - print_pair_src(i, inst->Alpha.Src + i); - } - _mesa_printf("\n"); - - _mesa_printf(" %s%s", opcode_string(inst->RGB.Opcode), inst->RGB.Saturate ? "_SAT" : ""); - if (inst->RGB.WriteMask) - _mesa_printf(" TEMP[%i].%s%s%s", inst->RGB.DestIndex, - (inst->RGB.WriteMask & 1) ? "x" : "", - (inst->RGB.WriteMask & 2) ? "y" : "", - (inst->RGB.WriteMask & 4) ? "z" : ""); - if (inst->RGB.OutputWriteMask) - _mesa_printf(" COLOR.%s%s%s", - (inst->RGB.OutputWriteMask & 1) ? "x" : "", - (inst->RGB.OutputWriteMask & 2) ? "y" : "", - (inst->RGB.OutputWriteMask & 4) ? "z" : ""); - nargs = num_pairinst_args(inst->RGB.Opcode); - for(i = 0; i < nargs; ++i) { - const char* abs = inst->RGB.Arg[i].Abs ? "|" : ""; - const char* neg = inst->RGB.Arg[i].Negate ? "-" : ""; - _mesa_printf(", %s%sSrc%i.%c%c%c%s", neg, abs, inst->RGB.Arg[i].Source, - swizzle_char(GET_SWZ(inst->RGB.Arg[i].Swizzle, 0)), - swizzle_char(GET_SWZ(inst->RGB.Arg[i].Swizzle, 1)), - swizzle_char(GET_SWZ(inst->RGB.Arg[i].Swizzle, 2)), - abs); - } - _mesa_printf("\n"); - - _mesa_printf(" %s%s", opcode_string(inst->Alpha.Opcode), inst->Alpha.Saturate ? "_SAT" : ""); - if (inst->Alpha.WriteMask) - _mesa_printf(" TEMP[%i].w", inst->Alpha.DestIndex); - if (inst->Alpha.OutputWriteMask) - _mesa_printf(" COLOR.w"); - if (inst->Alpha.DepthWriteMask) - _mesa_printf(" DEPTH.w"); - nargs = num_pairinst_args(inst->Alpha.Opcode); - for(i = 0; i < nargs; ++i) { - const char* abs = inst->Alpha.Arg[i].Abs ? "|" : ""; - const char* neg = inst->Alpha.Arg[i].Negate ? "-" : ""; - _mesa_printf(", %s%sSrc%i.%c%s", neg, abs, inst->Alpha.Arg[i].Source, - swizzle_char(inst->Alpha.Arg[i].Swizzle), abs); - } - _mesa_printf("\n"); -} |