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authormarha <marha@users.sourceforge.net>2009-10-09 06:31:44 +0000
committermarha <marha@users.sourceforge.net>2009-10-09 06:31:44 +0000
commit06456f5db88b434c3634ede42bdbfdce78fc4249 (patch)
tree97f5174e2d3da40faee7f2ad8858233da3d0166e /mesalib/src/mesa/shader/prog_instruction.c
parent7b230a3fe2d6c83488d9eec43067fe8ba8ac081b (diff)
parenta0c4815433ccd57322f4f7703ca35e9ccfa59250 (diff)
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svn merge ^/branches/released . --username marha
Diffstat (limited to 'mesalib/src/mesa/shader/prog_instruction.c')
-rw-r--r--mesalib/src/mesa/shader/prog_instruction.c352
1 files changed, 352 insertions, 0 deletions
diff --git a/mesalib/src/mesa/shader/prog_instruction.c b/mesalib/src/mesa/shader/prog_instruction.c
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+/*
+ * Mesa 3-D graphics library
+ * Version: 7.3
+ *
+ * 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
+ * BRIAN PAUL 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;
+
+ _mesa_bzero(inst, 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 (struct prog_instruction *)
+ _mesa_calloc(numInst * sizeof(struct prog_instruction));
+}
+
+
+/**
+ * Reallocate memory storing an array of program instructions.
+ * This is used when we need to append additional instructions onto an
+ * program.
+ * \param oldInst pointer to first of old/src instructions
+ * \param numOldInst number of instructions at <oldInst>
+ * \param numNewInst desired size of new instruction array.
+ * \return pointer to start of new instruction array.
+ */
+struct prog_instruction *
+_mesa_realloc_instructions(struct prog_instruction *oldInst,
+ GLuint numOldInst, GLuint numNewInst)
+{
+ struct prog_instruction *newInst;
+
+ newInst = (struct prog_instruction *)
+ _mesa_realloc(oldInst,
+ numOldInst * sizeof(struct prog_instruction),
+ numNewInst * sizeof(struct prog_instruction));
+
+ return newInst;
+}
+
+
+/**
+ * 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;
+ _mesa_memcpy(dest, src, n * sizeof(struct prog_instruction));
+ for (i = 0; i < n; i++) {
+ if (src[i].Comment)
+ dest[i].Comment = _mesa_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++) {
+ if (inst[i].Data)
+ _mesa_free(inst[i].Data);
+ if (inst[i].Comment)
+ _mesa_free((char *) inst[i].Comment);
+ }
+ _mesa_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_AND, "AND", 2, 1 },
+ { OPCODE_ARA, "ARA", 1, 1 },
+ { OPCODE_ARL, "ARL", 1, 1 },
+ { OPCODE_ARL_NV, "ARL_NV", 1, 1 },
+ { OPCODE_ARR, "ARL", 1, 1 },
+ { OPCODE_BGNLOOP,"BGNLOOP", 0, 0 },
+ { OPCODE_BGNSUB, "BGNSUB", 0, 0 },
+ { OPCODE_BRA, "BRA", 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_DP2A, "DP2A", 3, 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_NOT, "NOT", 1, 1 },
+ { OPCODE_NRM3, "NRM3", 1, 1 },
+ { OPCODE_NRM4, "NRM4", 1, 1 },
+ { OPCODE_OR, "OR", 2, 1 },
+ { OPCODE_PK2H, "PK2H", 1, 1 },
+ { OPCODE_PK2US, "PK2US", 1, 1 },
+ { OPCODE_PK4B, "PK4B", 1, 1 },
+ { OPCODE_PK4UB, "PK4UB", 1, 1 },
+ { OPCODE_POW, "POW", 2, 1 },
+ { OPCODE_POPA, "POPA", 0, 0 },
+ { OPCODE_PRINT, "PRINT", 1, 0 },
+ { OPCODE_PUSHA, "PUSHA", 0, 0 },
+ { OPCODE_RCC, "RCC", 1, 1 },
+ { OPCODE_RCP, "RCP", 1, 1 },
+ { OPCODE_RET, "RET", 0, 0 },
+ { OPCODE_RFL, "RFL", 1, 1 },
+ { OPCODE_RSQ, "RSQ", 1, 1 },
+ { OPCODE_SCS, "SCS", 1, 1 },
+ { OPCODE_SEQ, "SEQ", 2, 1 },
+ { OPCODE_SFL, "SFL", 0, 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_STR, "STR", 0, 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_UP2H, "UP2H", 1, 1 },
+ { OPCODE_UP2US, "UP2US", 1, 1 },
+ { OPCODE_UP4B, "UP4B", 1, 1 },
+ { OPCODE_UP4UB, "UP4UB", 1, 1 },
+ { OPCODE_X2D, "X2D", 3, 1 },
+ { OPCODE_XOR, "XOR", 2, 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;
+ }
+}
+