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| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. |
| * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| #include "main/glheader.h" |
| #include "main/imports.h" |
| #include "main/mtypes.h" |
| #include "prog_instruction.h" |
| |
| |
| /** |
| * Initialize program instruction fields to defaults. |
| * \param inst first instruction to initialize |
| * \param count number of instructions to initialize |
| */ |
| void |
| _mesa_init_instructions(struct prog_instruction *inst, GLuint count) |
| { |
| GLuint i; |
| |
| memset(inst, 0, count * sizeof(struct prog_instruction)); |
| |
| for (i = 0; i < count; i++) { |
| inst[i].SrcReg[0].File = PROGRAM_UNDEFINED; |
| inst[i].SrcReg[0].Swizzle = SWIZZLE_NOOP; |
| inst[i].SrcReg[1].File = PROGRAM_UNDEFINED; |
| inst[i].SrcReg[1].Swizzle = SWIZZLE_NOOP; |
| inst[i].SrcReg[2].File = PROGRAM_UNDEFINED; |
| inst[i].SrcReg[2].Swizzle = SWIZZLE_NOOP; |
| |
| inst[i].DstReg.File = PROGRAM_UNDEFINED; |
| inst[i].DstReg.WriteMask = WRITEMASK_XYZW; |
| inst[i].DstReg.CondMask = COND_TR; |
| inst[i].DstReg.CondSwizzle = SWIZZLE_NOOP; |
| |
| inst[i].SaturateMode = SATURATE_OFF; |
| inst[i].Precision = FLOAT32; |
| } |
| } |
| |
| |
| /** |
| * Allocate an array of program instructions. |
| * \param numInst number of instructions |
| * \return pointer to instruction memory |
| */ |
| struct prog_instruction * |
| _mesa_alloc_instructions(GLuint numInst) |
| { |
| return |
| calloc(numInst, sizeof(struct prog_instruction)); |
| } |
| |
| |
| /** |
| * Copy an array of program instructions. |
| * \param dest pointer to destination. |
| * \param src pointer to source. |
| * \param n number of instructions to copy. |
| * \return pointer to destination. |
| */ |
| struct prog_instruction * |
| _mesa_copy_instructions(struct prog_instruction *dest, |
| const struct prog_instruction *src, GLuint n) |
| { |
| GLuint i; |
| memcpy(dest, src, n * sizeof(struct prog_instruction)); |
| for (i = 0; i < n; i++) { |
| if (src[i].Comment) |
| dest[i].Comment = strdup(src[i].Comment); |
| } |
| return dest; |
| } |
| |
| |
| /** |
| * Free an array of instructions |
| */ |
| void |
| _mesa_free_instructions(struct prog_instruction *inst, GLuint count) |
| { |
| GLuint i; |
| for (i = 0; i < count; i++) { |
| free((char *)inst[i].Comment); |
| } |
| free(inst); |
| } |
| |
| |
| /** |
| * Basic info about each instruction |
| */ |
| struct instruction_info |
| { |
| gl_inst_opcode Opcode; |
| const char *Name; |
| GLuint NumSrcRegs; |
| GLuint NumDstRegs; |
| }; |
| |
| /** |
| * Instruction info |
| * \note Opcode should equal array index! |
| */ |
| static const struct instruction_info InstInfo[MAX_OPCODE] = { |
| { OPCODE_NOP, "NOP", 0, 0 }, |
| { OPCODE_ABS, "ABS", 1, 1 }, |
| { OPCODE_ADD, "ADD", 2, 1 }, |
| { OPCODE_ARL, "ARL", 1, 1 }, |
| { OPCODE_BGNLOOP,"BGNLOOP", 0, 0 }, |
| { OPCODE_BGNSUB, "BGNSUB", 0, 0 }, |
| { OPCODE_BRK, "BRK", 0, 0 }, |
| { OPCODE_CAL, "CAL", 0, 0 }, |
| { OPCODE_CMP, "CMP", 3, 1 }, |
| { OPCODE_CONT, "CONT", 0, 0 }, |
| { OPCODE_COS, "COS", 1, 1 }, |
| { OPCODE_DDX, "DDX", 1, 1 }, |
| { OPCODE_DDY, "DDY", 1, 1 }, |
| { OPCODE_DP2, "DP2", 2, 1 }, |
| { OPCODE_DP3, "DP3", 2, 1 }, |
| { OPCODE_DP4, "DP4", 2, 1 }, |
| { OPCODE_DPH, "DPH", 2, 1 }, |
| { OPCODE_DST, "DST", 2, 1 }, |
| { OPCODE_ELSE, "ELSE", 0, 0 }, |
| { OPCODE_END, "END", 0, 0 }, |
| { OPCODE_ENDIF, "ENDIF", 0, 0 }, |
| { OPCODE_ENDLOOP,"ENDLOOP", 0, 0 }, |
| { OPCODE_ENDSUB, "ENDSUB", 0, 0 }, |
| { OPCODE_EX2, "EX2", 1, 1 }, |
| { OPCODE_EXP, "EXP", 1, 1 }, |
| { OPCODE_FLR, "FLR", 1, 1 }, |
| { OPCODE_FRC, "FRC", 1, 1 }, |
| { OPCODE_IF, "IF", 1, 0 }, |
| { OPCODE_KIL, "KIL", 1, 0 }, |
| { OPCODE_KIL_NV, "KIL_NV", 0, 0 }, |
| { OPCODE_LG2, "LG2", 1, 1 }, |
| { OPCODE_LIT, "LIT", 1, 1 }, |
| { OPCODE_LOG, "LOG", 1, 1 }, |
| { OPCODE_LRP, "LRP", 3, 1 }, |
| { OPCODE_MAD, "MAD", 3, 1 }, |
| { OPCODE_MAX, "MAX", 2, 1 }, |
| { OPCODE_MIN, "MIN", 2, 1 }, |
| { OPCODE_MOV, "MOV", 1, 1 }, |
| { OPCODE_MUL, "MUL", 2, 1 }, |
| { OPCODE_NOISE1, "NOISE1", 1, 1 }, |
| { OPCODE_NOISE2, "NOISE2", 1, 1 }, |
| { OPCODE_NOISE3, "NOISE3", 1, 1 }, |
| { OPCODE_NOISE4, "NOISE4", 1, 1 }, |
| { OPCODE_POW, "POW", 2, 1 }, |
| { OPCODE_RCP, "RCP", 1, 1 }, |
| { OPCODE_RET, "RET", 0, 0 }, |
| { OPCODE_RSQ, "RSQ", 1, 1 }, |
| { OPCODE_SCS, "SCS", 1, 1 }, |
| { OPCODE_SEQ, "SEQ", 2, 1 }, |
| { OPCODE_SGE, "SGE", 2, 1 }, |
| { OPCODE_SGT, "SGT", 2, 1 }, |
| { OPCODE_SIN, "SIN", 1, 1 }, |
| { OPCODE_SLE, "SLE", 2, 1 }, |
| { OPCODE_SLT, "SLT", 2, 1 }, |
| { OPCODE_SNE, "SNE", 2, 1 }, |
| { OPCODE_SSG, "SSG", 1, 1 }, |
| { OPCODE_SUB, "SUB", 2, 1 }, |
| { OPCODE_SWZ, "SWZ", 1, 1 }, |
| { OPCODE_TEX, "TEX", 1, 1 }, |
| { OPCODE_TXB, "TXB", 1, 1 }, |
| { OPCODE_TXD, "TXD", 3, 1 }, |
| { OPCODE_TXL, "TXL", 1, 1 }, |
| { OPCODE_TXP, "TXP", 1, 1 }, |
| { OPCODE_TXP_NV, "TXP_NV", 1, 1 }, |
| { OPCODE_TRUNC, "TRUNC", 1, 1 }, |
| { OPCODE_XPD, "XPD", 2, 1 } |
| }; |
| |
| |
| /** |
| * Return the number of src registers for the given instruction/opcode. |
| */ |
| GLuint |
| _mesa_num_inst_src_regs(gl_inst_opcode opcode) |
| { |
| assert(opcode < MAX_OPCODE); |
| assert(opcode == InstInfo[opcode].Opcode); |
| assert(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode); |
| return InstInfo[opcode].NumSrcRegs; |
| } |
| |
| |
| /** |
| * Return the number of dst registers for the given instruction/opcode. |
| */ |
| GLuint |
| _mesa_num_inst_dst_regs(gl_inst_opcode opcode) |
| { |
| assert(opcode < MAX_OPCODE); |
| assert(opcode == InstInfo[opcode].Opcode); |
| assert(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode); |
| return InstInfo[opcode].NumDstRegs; |
| } |
| |
| |
| GLboolean |
| _mesa_is_tex_instruction(gl_inst_opcode opcode) |
| { |
| return (opcode == OPCODE_TEX || |
| opcode == OPCODE_TXB || |
| opcode == OPCODE_TXD || |
| opcode == OPCODE_TXL || |
| opcode == OPCODE_TXP); |
| } |
| |
| |
| /** |
| * Check if there's a potential src/dst register data dependency when |
| * using SOA execution. |
| * Example: |
| * MOV T, T.yxwz; |
| * This would expand into: |
| * MOV t0, t1; |
| * MOV t1, t0; |
| * MOV t2, t3; |
| * MOV t3, t2; |
| * The second instruction will have the wrong value for t0 if executed as-is. |
| */ |
| GLboolean |
| _mesa_check_soa_dependencies(const struct prog_instruction *inst) |
| { |
| GLuint i, chan; |
| |
| if (inst->DstReg.WriteMask == WRITEMASK_X || |
| inst->DstReg.WriteMask == WRITEMASK_Y || |
| inst->DstReg.WriteMask == WRITEMASK_Z || |
| inst->DstReg.WriteMask == WRITEMASK_W || |
| inst->DstReg.WriteMask == 0x0) { |
| /* no chance of data dependency */ |
| return GL_FALSE; |
| } |
| |
| /* loop over src regs */ |
| for (i = 0; i < 3; i++) { |
| if (inst->SrcReg[i].File == inst->DstReg.File && |
| inst->SrcReg[i].Index == inst->DstReg.Index) { |
| /* loop over dest channels */ |
| GLuint channelsWritten = 0x0; |
| for (chan = 0; chan < 4; chan++) { |
| if (inst->DstReg.WriteMask & (1 << chan)) { |
| /* check if we're reading a channel that's been written */ |
| GLuint swizzle = GET_SWZ(inst->SrcReg[i].Swizzle, chan); |
| if (swizzle <= SWIZZLE_W && |
| (channelsWritten & (1 << swizzle))) { |
| return GL_TRUE; |
| } |
| |
| channelsWritten |= (1 << chan); |
| } |
| } |
| } |
| } |
| return GL_FALSE; |
| } |
| |
| |
| /** |
| * Return string name for given program opcode. |
| */ |
| const char * |
| _mesa_opcode_string(gl_inst_opcode opcode) |
| { |
| if (opcode < MAX_OPCODE) |
| return InstInfo[opcode].Name; |
| else { |
| static char s[20]; |
| _mesa_snprintf(s, sizeof(s), "OP%u", opcode); |
| return s; |
| } |
| } |
| |