diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c')
| -rw-r--r-- | mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c | 2498 |
1 files changed, 1249 insertions, 1249 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c b/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c index 5c68fd78c..bf0bfd6df 100644 --- a/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c +++ b/mesalib/src/mesa/state_tracker/st_mesa_to_tgsi.c @@ -1,1249 +1,1249 @@ -/************************************************************************** - * - * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas. - * 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, sub license, 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 (including the - * next paragraph) 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 NON-INFRINGEMENT. - * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. - * - **************************************************************************/ - -/* - * \author - * Michal Krol, - * Keith Whitwell - */ - -#include "pipe/p_compiler.h" -#include "pipe/p_context.h" -#include "pipe/p_screen.h" -#include "pipe/p_shader_tokens.h" -#include "pipe/p_state.h" -#include "tgsi/tgsi_ureg.h" -#include "st_mesa_to_tgsi.h" -#include "st_context.h" -#include "program/prog_instruction.h" -#include "program/prog_parameter.h" -#include "util/u_debug.h" -#include "util/u_math.h" -#include "util/u_memory.h" - - -#define PROGRAM_ANY_CONST ((1 << PROGRAM_LOCAL_PARAM) | \ - (1 << PROGRAM_ENV_PARAM) | \ - (1 << PROGRAM_STATE_VAR) | \ - (1 << PROGRAM_NAMED_PARAM) | \ - (1 << PROGRAM_CONSTANT) | \ - (1 << PROGRAM_UNIFORM)) - - -struct label { - unsigned branch_target; - unsigned token; -}; - - -/** - * Intermediate state used during shader translation. - */ -struct st_translate { - struct ureg_program *ureg; - - struct ureg_dst temps[MAX_PROGRAM_TEMPS]; - struct ureg_src *constants; - struct ureg_dst outputs[PIPE_MAX_SHADER_OUTPUTS]; - struct ureg_src inputs[PIPE_MAX_SHADER_INPUTS]; - struct ureg_dst address[1]; - struct ureg_src samplers[PIPE_MAX_SAMPLERS]; - struct ureg_src systemValues[SYSTEM_VALUE_MAX]; - - /* Extra info for handling point size clamping in vertex shader */ - struct ureg_dst pointSizeResult; /**< Actual point size output register */ - struct ureg_src pointSizeConst; /**< Point size range constant register */ - GLint pointSizeOutIndex; /**< Temp point size output register */ - GLboolean prevInstWrotePointSize; - - const GLuint *inputMapping; - const GLuint *outputMapping; - - /* For every instruction that contains a label (eg CALL), keep - * details so that we can go back afterwards and emit the correct - * tgsi instruction number for each label. - */ - struct label *labels; - unsigned labels_size; - unsigned labels_count; - - /* Keep a record of the tgsi instruction number that each mesa - * instruction starts at, will be used to fix up labels after - * translation. - */ - unsigned *insn; - unsigned insn_size; - unsigned insn_count; - - unsigned procType; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */ - - boolean error; -}; - - -/** Map Mesa's SYSTEM_VALUE_x to TGSI_SEMANTIC_x */ -static unsigned mesa_sysval_to_semantic[SYSTEM_VALUE_MAX] = { - TGSI_SEMANTIC_FACE, - TGSI_SEMANTIC_INSTANCEID -}; - - -/** - * Make note of a branch to a label in the TGSI code. - * After we've emitted all instructions, we'll go over the list - * of labels built here and patch the TGSI code with the actual - * location of each label. - */ -static unsigned *get_label( struct st_translate *t, - unsigned branch_target ) -{ - unsigned i; - - if (t->labels_count + 1 >= t->labels_size) { - unsigned old_size = t->labels_size; - t->labels_size = 1 << (util_logbase2(t->labels_size) + 1); - t->labels = REALLOC( t->labels, - old_size * sizeof t->labels[0], - t->labels_size * sizeof t->labels[0] ); - if (t->labels == NULL) { - static unsigned dummy; - t->error = TRUE; - return &dummy; - } - } - - i = t->labels_count++; - t->labels[i].branch_target = branch_target; - return &t->labels[i].token; -} - - -/** - * Called prior to emitting the TGSI code for each Mesa instruction. - * Allocate additional space for instructions if needed. - * Update the insn[] array so the next Mesa instruction points to - * the next TGSI instruction. - */ -static void set_insn_start( struct st_translate *t, - unsigned start ) -{ - if (t->insn_count + 1 >= t->insn_size) { - unsigned old_size = t->insn_size; - t->insn_size = 1 << (util_logbase2(t->insn_size) + 1); - t->insn = REALLOC( t->insn, - old_size * sizeof t->insn[0], - t->insn_size * sizeof t->insn[0] ); - if (t->insn == NULL) { - t->error = TRUE; - return; - } - } - - t->insn[t->insn_count++] = start; -} - - -/** - * Map a Mesa dst register to a TGSI ureg_dst register. - */ -static struct ureg_dst -dst_register( struct st_translate *t, - gl_register_file file, - GLuint index ) -{ - switch( file ) { - case PROGRAM_UNDEFINED: - return ureg_dst_undef(); - - case PROGRAM_TEMPORARY: - if (ureg_dst_is_undef(t->temps[index])) - t->temps[index] = ureg_DECL_temporary( t->ureg ); - - return t->temps[index]; - - case PROGRAM_OUTPUT: - if (t->procType == TGSI_PROCESSOR_VERTEX && index == VERT_RESULT_PSIZ) - t->prevInstWrotePointSize = GL_TRUE; - - if (t->procType == TGSI_PROCESSOR_VERTEX) - assert(index < VERT_RESULT_MAX); - else if (t->procType == TGSI_PROCESSOR_FRAGMENT) - assert(index < FRAG_RESULT_MAX); - else - assert(index < GEOM_RESULT_MAX); - - assert(t->outputMapping[index] < Elements(t->outputs)); - - return t->outputs[t->outputMapping[index]]; - - case PROGRAM_ADDRESS: - return t->address[index]; - - default: - debug_assert( 0 ); - return ureg_dst_undef(); - } -} - - -/** - * Map a Mesa src register to a TGSI ureg_src register. - */ -static struct ureg_src -src_register( struct st_translate *t, - gl_register_file file, - GLint index ) -{ - switch( file ) { - case PROGRAM_UNDEFINED: - return ureg_src_undef(); - - case PROGRAM_TEMPORARY: - assert(index >= 0); - if (ureg_dst_is_undef(t->temps[index])) - t->temps[index] = ureg_DECL_temporary( t->ureg ); - assert(index < Elements(t->temps)); - return ureg_src(t->temps[index]); - - case PROGRAM_NAMED_PARAM: - case PROGRAM_ENV_PARAM: - case PROGRAM_LOCAL_PARAM: - case PROGRAM_UNIFORM: - assert(index >= 0); - return t->constants[index]; - case PROGRAM_STATE_VAR: - case PROGRAM_CONSTANT: /* ie, immediate */ - if (index < 0) - return ureg_DECL_constant( t->ureg, 0 ); - else - return t->constants[index]; - - case PROGRAM_INPUT: - assert(t->inputMapping[index] < Elements(t->inputs)); - return t->inputs[t->inputMapping[index]]; - - case PROGRAM_OUTPUT: - assert(t->outputMapping[index] < Elements(t->outputs)); - return ureg_src(t->outputs[t->outputMapping[index]]); /* not needed? */ - - case PROGRAM_ADDRESS: - return ureg_src(t->address[index]); - - case PROGRAM_SYSTEM_VALUE: - assert(index < Elements(t->systemValues)); - return t->systemValues[index]; - - default: - debug_assert( 0 ); - return ureg_src_undef(); - } -} - - -/** - * Map mesa texture target to TGSI texture target. - */ -static unsigned -translate_texture_target( GLuint textarget, - GLboolean shadow ) -{ - if (shadow) { - switch( textarget ) { - case TEXTURE_1D_INDEX: return TGSI_TEXTURE_SHADOW1D; - case TEXTURE_2D_INDEX: return TGSI_TEXTURE_SHADOW2D; - case TEXTURE_RECT_INDEX: return TGSI_TEXTURE_SHADOWRECT; - default: break; - } - } - - switch( textarget ) { - case TEXTURE_1D_INDEX: return TGSI_TEXTURE_1D; - case TEXTURE_2D_INDEX: return TGSI_TEXTURE_2D; - case TEXTURE_3D_INDEX: return TGSI_TEXTURE_3D; - case TEXTURE_CUBE_INDEX: return TGSI_TEXTURE_CUBE; - case TEXTURE_RECT_INDEX: return TGSI_TEXTURE_RECT; - case TEXTURE_1D_ARRAY_INDEX: return TGSI_TEXTURE_1D_ARRAY; - case TEXTURE_2D_ARRAY_INDEX: return TGSI_TEXTURE_2D_ARRAY; - default: - debug_assert( 0 ); - return TGSI_TEXTURE_1D; - } -} - - -/** - * Create a TGSI ureg_dst register from a Mesa dest register. - */ -static struct ureg_dst -translate_dst( struct st_translate *t, - const struct prog_dst_register *DstReg, - boolean saturate ) -{ - struct ureg_dst dst = dst_register( t, - DstReg->File, - DstReg->Index ); - - dst = ureg_writemask( dst, - DstReg->WriteMask ); - - if (saturate) - dst = ureg_saturate( dst ); - - if (DstReg->RelAddr) - dst = ureg_dst_indirect( dst, ureg_src(t->address[0]) ); - - return dst; -} - - -/** - * Create a TGSI ureg_src register from a Mesa src register. - */ -static struct ureg_src -translate_src( struct st_translate *t, - const struct prog_src_register *SrcReg ) -{ - struct ureg_src src = src_register( t, SrcReg->File, SrcReg->Index ); - - if (t->procType == TGSI_PROCESSOR_GEOMETRY && SrcReg->HasIndex2) { - src = src_register( t, SrcReg->File, SrcReg->Index2 ); - if (SrcReg->RelAddr2) - src = ureg_src_dimension_indirect( src, ureg_src(t->address[0]), - SrcReg->Index); - else - src = ureg_src_dimension( src, SrcReg->Index); - } - - src = ureg_swizzle( src, - GET_SWZ( SrcReg->Swizzle, 0 ) & 0x3, - GET_SWZ( SrcReg->Swizzle, 1 ) & 0x3, - GET_SWZ( SrcReg->Swizzle, 2 ) & 0x3, - GET_SWZ( SrcReg->Swizzle, 3 ) & 0x3); - - if (SrcReg->Negate == NEGATE_XYZW) - src = ureg_negate(src); - - if (SrcReg->Abs) - src = ureg_abs(src); - - if (SrcReg->RelAddr) { - src = ureg_src_indirect( src, ureg_src(t->address[0])); - if (SrcReg->File != PROGRAM_INPUT && - SrcReg->File != PROGRAM_OUTPUT) { - /* If SrcReg->Index was negative, it was set to zero in - * src_register(). Reassign it now. But don't do this - * for input/output regs since they get remapped while - * const buffers don't. - */ - src.Index = SrcReg->Index; - } - } - - return src; -} - - -static struct ureg_src swizzle_4v( struct ureg_src src, - const unsigned *swz ) -{ - return ureg_swizzle( src, swz[0], swz[1], swz[2], swz[3] ); -} - - -/** - * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG: - * - * SWZ dst, src.x-y10 - * - * becomes: - * - * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0} - */ -static void emit_swz( struct st_translate *t, - struct ureg_dst dst, - const struct prog_src_register *SrcReg ) -{ - struct ureg_program *ureg = t->ureg; - struct ureg_src src = src_register( t, SrcReg->File, SrcReg->Index ); - - unsigned negate_mask = SrcReg->Negate; - - unsigned one_mask = ((GET_SWZ(SrcReg->Swizzle, 0) == SWIZZLE_ONE) << 0 | - (GET_SWZ(SrcReg->Swizzle, 1) == SWIZZLE_ONE) << 1 | - (GET_SWZ(SrcReg->Swizzle, 2) == SWIZZLE_ONE) << 2 | - (GET_SWZ(SrcReg->Swizzle, 3) == SWIZZLE_ONE) << 3); - - unsigned zero_mask = ((GET_SWZ(SrcReg->Swizzle, 0) == SWIZZLE_ZERO) << 0 | - (GET_SWZ(SrcReg->Swizzle, 1) == SWIZZLE_ZERO) << 1 | - (GET_SWZ(SrcReg->Swizzle, 2) == SWIZZLE_ZERO) << 2 | - (GET_SWZ(SrcReg->Swizzle, 3) == SWIZZLE_ZERO) << 3); - - unsigned negative_one_mask = one_mask & negate_mask; - unsigned positive_one_mask = one_mask & ~negate_mask; - - struct ureg_src imm; - unsigned i; - unsigned mul_swizzle[4] = {0,0,0,0}; - unsigned add_swizzle[4] = {0,0,0,0}; - unsigned src_swizzle[4] = {0,0,0,0}; - boolean need_add = FALSE; - boolean need_mul = FALSE; - - if (dst.WriteMask == 0) - return; - - /* Is this just a MOV? - */ - if (zero_mask == 0 && - one_mask == 0 && - (negate_mask == 0 || negate_mask == TGSI_WRITEMASK_XYZW)) - { - ureg_MOV( ureg, dst, translate_src( t, SrcReg )); - return; - } - -#define IMM_ZERO 0 -#define IMM_ONE 1 -#define IMM_NEG_ONE 2 - - imm = ureg_imm3f( ureg, 0, 1, -1 ); - - for (i = 0; i < 4; i++) { - unsigned bit = 1 << i; - - if (dst.WriteMask & bit) { - if (positive_one_mask & bit) { - mul_swizzle[i] = IMM_ZERO; - add_swizzle[i] = IMM_ONE; - need_add = TRUE; - } - else if (negative_one_mask & bit) { - mul_swizzle[i] = IMM_ZERO; - add_swizzle[i] = IMM_NEG_ONE; - need_add = TRUE; - } - else if (zero_mask & bit) { - mul_swizzle[i] = IMM_ZERO; - add_swizzle[i] = IMM_ZERO; - need_add = TRUE; - } - else { - add_swizzle[i] = IMM_ZERO; - src_swizzle[i] = GET_SWZ(SrcReg->Swizzle, i); - need_mul = TRUE; - if (negate_mask & bit) { - mul_swizzle[i] = IMM_NEG_ONE; - } - else { - mul_swizzle[i] = IMM_ONE; - } - } - } - } - - if (need_mul && need_add) { - ureg_MAD( ureg, - dst, - swizzle_4v( src, src_swizzle ), - swizzle_4v( imm, mul_swizzle ), - swizzle_4v( imm, add_swizzle ) ); - } - else if (need_mul) { - ureg_MUL( ureg, - dst, - swizzle_4v( src, src_swizzle ), - swizzle_4v( imm, mul_swizzle ) ); - } - else if (need_add) { - ureg_MOV( ureg, - dst, - swizzle_4v( imm, add_swizzle ) ); - } - else { - debug_assert(0); - } - -#undef IMM_ZERO -#undef IMM_ONE -#undef IMM_NEG_ONE -} - - -/** - * Negate the value of DDY to match GL semantics where (0,0) is the - * lower-left corner of the window. - * Note that the GL_ARB_fragment_coord_conventions extension will - * effect this someday. - */ -static void emit_ddy( struct st_translate *t, - struct ureg_dst dst, - const struct prog_src_register *SrcReg ) -{ - struct ureg_program *ureg = t->ureg; - struct ureg_src src = translate_src( t, SrcReg ); - src = ureg_negate( src ); - ureg_DDY( ureg, dst, src ); -} - - - -static unsigned -translate_opcode( unsigned op ) -{ - switch( op ) { - case OPCODE_ARL: - return TGSI_OPCODE_ARL; - case OPCODE_ABS: - return TGSI_OPCODE_ABS; - case OPCODE_ADD: - return TGSI_OPCODE_ADD; - case OPCODE_BGNLOOP: - return TGSI_OPCODE_BGNLOOP; - case OPCODE_BGNSUB: - return TGSI_OPCODE_BGNSUB; - case OPCODE_BRA: - return TGSI_OPCODE_BRA; - case OPCODE_BRK: - return TGSI_OPCODE_BRK; - case OPCODE_CAL: - return TGSI_OPCODE_CAL; - case OPCODE_CMP: - return TGSI_OPCODE_CMP; - case OPCODE_CONT: - return TGSI_OPCODE_CONT; - case OPCODE_COS: - return TGSI_OPCODE_COS; - case OPCODE_DDX: - return TGSI_OPCODE_DDX; - case OPCODE_DDY: - return TGSI_OPCODE_DDY; - case OPCODE_DP2: - return TGSI_OPCODE_DP2; - case OPCODE_DP2A: - return TGSI_OPCODE_DP2A; - case OPCODE_DP3: - return TGSI_OPCODE_DP3; - case OPCODE_DP4: - return TGSI_OPCODE_DP4; - case OPCODE_DPH: - return TGSI_OPCODE_DPH; - case OPCODE_DST: - return TGSI_OPCODE_DST; - case OPCODE_ELSE: - return TGSI_OPCODE_ELSE; - case OPCODE_EMIT_VERTEX: - return TGSI_OPCODE_EMIT; - case OPCODE_END_PRIMITIVE: - return TGSI_OPCODE_ENDPRIM; - case OPCODE_ENDIF: - return TGSI_OPCODE_ENDIF; - case OPCODE_ENDLOOP: - return TGSI_OPCODE_ENDLOOP; - case OPCODE_ENDSUB: - return TGSI_OPCODE_ENDSUB; - case OPCODE_EX2: - return TGSI_OPCODE_EX2; - case OPCODE_EXP: - return TGSI_OPCODE_EXP; - case OPCODE_FLR: - return TGSI_OPCODE_FLR; - case OPCODE_FRC: - return TGSI_OPCODE_FRC; - case OPCODE_IF: - return TGSI_OPCODE_IF; - case OPCODE_TRUNC: - return TGSI_OPCODE_TRUNC; - case OPCODE_KIL: - return TGSI_OPCODE_KIL; - case OPCODE_KIL_NV: - return TGSI_OPCODE_KILP; - case OPCODE_LG2: - return TGSI_OPCODE_LG2; - case OPCODE_LOG: - return TGSI_OPCODE_LOG; - case OPCODE_LIT: - return TGSI_OPCODE_LIT; - case OPCODE_LRP: - return TGSI_OPCODE_LRP; - case OPCODE_MAD: - return TGSI_OPCODE_MAD; - case OPCODE_MAX: - return TGSI_OPCODE_MAX; - case OPCODE_MIN: - return TGSI_OPCODE_MIN; - case OPCODE_MOV: - return TGSI_OPCODE_MOV; - case OPCODE_MUL: - return TGSI_OPCODE_MUL; - case OPCODE_NOP: - return TGSI_OPCODE_NOP; - case OPCODE_NRM3: - return TGSI_OPCODE_NRM; - case OPCODE_NRM4: - return TGSI_OPCODE_NRM4; - case OPCODE_POW: - return TGSI_OPCODE_POW; - case OPCODE_RCP: - return TGSI_OPCODE_RCP; - case OPCODE_RET: - return TGSI_OPCODE_RET; - case OPCODE_RSQ: - return TGSI_OPCODE_RSQ; - case OPCODE_SCS: - return TGSI_OPCODE_SCS; - case OPCODE_SEQ: - return TGSI_OPCODE_SEQ; - case OPCODE_SGE: - return TGSI_OPCODE_SGE; - case OPCODE_SGT: - return TGSI_OPCODE_SGT; - case OPCODE_SIN: - return TGSI_OPCODE_SIN; - case OPCODE_SLE: - return TGSI_OPCODE_SLE; - case OPCODE_SLT: - return TGSI_OPCODE_SLT; - case OPCODE_SNE: - return TGSI_OPCODE_SNE; - case OPCODE_SSG: - return TGSI_OPCODE_SSG; - case OPCODE_SUB: - return TGSI_OPCODE_SUB; - case OPCODE_TEX: - return TGSI_OPCODE_TEX; - case OPCODE_TXB: - return TGSI_OPCODE_TXB; - case OPCODE_TXD: - return TGSI_OPCODE_TXD; - case OPCODE_TXL: - return TGSI_OPCODE_TXL; - case OPCODE_TXP: - return TGSI_OPCODE_TXP; - case OPCODE_XPD: - return TGSI_OPCODE_XPD; - case OPCODE_END: - return TGSI_OPCODE_END; - default: - debug_assert( 0 ); - return TGSI_OPCODE_NOP; - } -} - - -static void -compile_instruction( - struct st_translate *t, - const struct prog_instruction *inst ) -{ - struct ureg_program *ureg = t->ureg; - GLuint i; - struct ureg_dst dst[1]; - struct ureg_src src[4]; - unsigned num_dst; - unsigned num_src; - - num_dst = _mesa_num_inst_dst_regs( inst->Opcode ); - num_src = _mesa_num_inst_src_regs( inst->Opcode ); - - if (num_dst) - dst[0] = translate_dst( t, - &inst->DstReg, - inst->SaturateMode ); - - for (i = 0; i < num_src; i++) - src[i] = translate_src( t, &inst->SrcReg[i] ); - - switch( inst->Opcode ) { - case OPCODE_SWZ: - emit_swz( t, dst[0], &inst->SrcReg[0] ); - return; - - case OPCODE_BGNLOOP: - case OPCODE_CAL: - case OPCODE_ELSE: - case OPCODE_ENDLOOP: - case OPCODE_IF: - debug_assert(num_dst == 0); - ureg_label_insn( ureg, - translate_opcode( inst->Opcode ), - src, num_src, - get_label( t, inst->BranchTarget )); - return; - - case OPCODE_TEX: - case OPCODE_TXB: - case OPCODE_TXD: - case OPCODE_TXL: - case OPCODE_TXP: - src[num_src++] = t->samplers[inst->TexSrcUnit]; - ureg_tex_insn( ureg, - translate_opcode( inst->Opcode ), - dst, num_dst, - translate_texture_target( inst->TexSrcTarget, - inst->TexShadow ), - src, num_src ); - return; - - case OPCODE_SCS: - dst[0] = ureg_writemask(dst[0], TGSI_WRITEMASK_XY ); - ureg_insn( ureg, - translate_opcode( inst->Opcode ), - dst, num_dst, - src, num_src ); - break; - - case OPCODE_XPD: - dst[0] = ureg_writemask(dst[0], TGSI_WRITEMASK_XYZ ); - ureg_insn( ureg, - translate_opcode( inst->Opcode ), - dst, num_dst, - src, num_src ); - break; - - case OPCODE_NOISE1: - case OPCODE_NOISE2: - case OPCODE_NOISE3: - case OPCODE_NOISE4: - /* At some point, a motivated person could add a better - * implementation of noise. Currently not even the nvidia - * binary drivers do anything more than this. In any case, the - * place to do this is in the GL state tracker, not the poor - * driver. - */ - ureg_MOV( ureg, dst[0], ureg_imm1f(ureg, 0.5) ); - break; - - case OPCODE_DDY: - emit_ddy( t, dst[0], &inst->SrcReg[0] ); - break; - - default: - ureg_insn( ureg, - translate_opcode( inst->Opcode ), - dst, num_dst, - src, num_src ); - break; - } -} - - -/** - * Emit the TGSI instructions to adjust the WPOS pixel center convention - * Basically, add (adjX, adjY) to the fragment position. - */ -static void -emit_adjusted_wpos( struct st_translate *t, - const struct gl_program *program, - GLfloat adjX, GLfloat adjY) -{ - struct ureg_program *ureg = t->ureg; - struct ureg_dst wpos_temp = ureg_DECL_temporary(ureg); - struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]]; - - /* Note that we bias X and Y and pass Z and W through unchanged. - * The shader might also use gl_FragCoord.w and .z. - */ - ureg_ADD(ureg, wpos_temp, wpos_input, - ureg_imm4f(ureg, adjX, adjY, 0.0f, 0.0f)); - - t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp); -} - - -/** - * Emit the TGSI instructions for inverting the WPOS y coordinate. - * This code is unavoidable because it also depends on whether - * a FBO is bound (STATE_FB_WPOS_Y_TRANSFORM). - */ -static void -emit_wpos_inversion( struct st_translate *t, - const struct gl_program *program, - boolean invert) -{ - struct ureg_program *ureg = t->ureg; - - /* Fragment program uses fragment position input. - * Need to replace instances of INPUT[WPOS] with temp T - * where T = INPUT[WPOS] by y is inverted. - */ - static const gl_state_index wposTransformState[STATE_LENGTH] - = { STATE_INTERNAL, STATE_FB_WPOS_Y_TRANSFORM, 0, 0, 0 }; - - /* XXX: note we are modifying the incoming shader here! Need to - * do this before emitting the constant decls below, or this - * will be missed: - */ - unsigned wposTransConst = _mesa_add_state_reference(program->Parameters, - wposTransformState); - - struct ureg_src wpostrans = ureg_DECL_constant( ureg, wposTransConst ); - struct ureg_dst wpos_temp; - struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]]; - - /* MOV wpos_temp, input[wpos] - */ - if (wpos_input.File == TGSI_FILE_TEMPORARY) - wpos_temp = ureg_dst(wpos_input); - else { - wpos_temp = ureg_DECL_temporary( ureg ); - ureg_MOV( ureg, wpos_temp, wpos_input ); - } - - if (invert) { - /* MAD wpos_temp.y, wpos_input, wpostrans.xxxx, wpostrans.yyyy - */ - ureg_MAD( ureg, - ureg_writemask(wpos_temp, TGSI_WRITEMASK_Y ), - wpos_input, - ureg_scalar(wpostrans, 0), - ureg_scalar(wpostrans, 1)); - } else { - /* MAD wpos_temp.y, wpos_input, wpostrans.zzzz, wpostrans.wwww - */ - ureg_MAD( ureg, - ureg_writemask(wpos_temp, TGSI_WRITEMASK_Y ), - wpos_input, - ureg_scalar(wpostrans, 2), - ureg_scalar(wpostrans, 3)); - } - - /* Use wpos_temp as position input from here on: - */ - t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp); -} - - -/** - * Emit fragment position/ooordinate code. - */ -static void -emit_wpos(struct st_context *st, - struct st_translate *t, - const struct gl_program *program, - struct ureg_program *ureg) -{ - const struct gl_fragment_program *fp = - (const struct gl_fragment_program *) program; - struct pipe_screen *pscreen = st->pipe->screen; - boolean invert = FALSE; - - if (fp->OriginUpperLeft) { - /* Fragment shader wants origin in upper-left */ - if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) { - /* the driver supports upper-left origin */ - } - else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) { - /* the driver supports lower-left origin, need to invert Y */ - ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT); - invert = TRUE; - } - else - assert(0); - } - else { - /* Fragment shader wants origin in lower-left */ - if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) - /* the driver supports lower-left origin */ - ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT); - else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) - /* the driver supports upper-left origin, need to invert Y */ - invert = TRUE; - else - assert(0); - } - - if (fp->PixelCenterInteger) { - /* Fragment shader wants pixel center integer */ - if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) - /* the driver supports pixel center integer */ - ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER); - else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) - /* the driver supports pixel center half integer, need to bias X,Y */ - emit_adjusted_wpos(t, program, 0.5f, invert ? 0.5f : -0.5f); - else - assert(0); - } - else { - /* Fragment shader wants pixel center half integer */ - if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) { - /* the driver supports pixel center half integer */ - } - else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) { - /* the driver supports pixel center integer, need to bias X,Y */ - ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER); - emit_adjusted_wpos(t, program, 0.5f, invert ? -0.5f : 0.5f); - } - else - assert(0); - } - - /* we invert after adjustment so that we avoid the MOV to temporary, - * and reuse the adjustment ADD instead */ - emit_wpos_inversion(t, program, invert); -} - - -/** - * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back. - * TGSI uses +1 for front, -1 for back. - * This function converts the TGSI value to the GL value. Simply clamping/ - * saturating the value to [0,1] does the job. - */ -static void -emit_face_var( struct st_translate *t, - const struct gl_program *program ) -{ - struct ureg_program *ureg = t->ureg; - struct ureg_dst face_temp = ureg_DECL_temporary( ureg ); - struct ureg_src face_input = t->inputs[t->inputMapping[FRAG_ATTRIB_FACE]]; - - /* MOV_SAT face_temp, input[face] - */ - face_temp = ureg_saturate( face_temp ); - ureg_MOV( ureg, face_temp, face_input ); - - /* Use face_temp as face input from here on: - */ - t->inputs[t->inputMapping[FRAG_ATTRIB_FACE]] = ureg_src(face_temp); -} - - -static void -emit_edgeflags( struct st_translate *t, - const struct gl_program *program ) -{ - struct ureg_program *ureg = t->ureg; - struct ureg_dst edge_dst = t->outputs[t->outputMapping[VERT_RESULT_EDGE]]; - struct ureg_src edge_src = t->inputs[t->inputMapping[VERT_ATTRIB_EDGEFLAG]]; - - ureg_MOV( ureg, edge_dst, edge_src ); -} - - -/** - * Translate Mesa program to TGSI format. - * \param program the program to translate - * \param numInputs number of input registers used - * \param inputMapping maps Mesa fragment program inputs to TGSI generic - * input indexes - * \param inputSemanticName the TGSI_SEMANTIC flag for each input - * \param inputSemanticIndex the semantic index (ex: which texcoord) for - * each input - * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input - * \param numOutputs number of output registers used - * \param outputMapping maps Mesa fragment program outputs to TGSI - * generic outputs - * \param outputSemanticName the TGSI_SEMANTIC flag for each output - * \param outputSemanticIndex the semantic index (ex: which texcoord) for - * each output - * - * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY - */ -enum pipe_error -st_translate_mesa_program( - struct gl_context *ctx, - uint procType, - struct ureg_program *ureg, - const struct gl_program *program, - GLuint numInputs, - const GLuint inputMapping[], - const ubyte inputSemanticName[], - const ubyte inputSemanticIndex[], - const GLuint interpMode[], - GLuint numOutputs, - const GLuint outputMapping[], - const ubyte outputSemanticName[], - const ubyte outputSemanticIndex[], - boolean passthrough_edgeflags ) -{ - struct st_translate translate, *t; - unsigned i; - enum pipe_error ret = PIPE_OK; - - assert(numInputs <= Elements(t->inputs)); - assert(numOutputs <= Elements(t->outputs)); - - t = &translate; - memset(t, 0, sizeof *t); - - t->procType = procType; - t->inputMapping = inputMapping; - t->outputMapping = outputMapping; - t->ureg = ureg; - t->pointSizeOutIndex = -1; - t->prevInstWrotePointSize = GL_FALSE; - - /*_mesa_print_program(program);*/ - - /* - * Declare input attributes. - */ - if (procType == TGSI_PROCESSOR_FRAGMENT) { - for (i = 0; i < numInputs; i++) { - if (program->InputFlags[0] & PROG_PARAM_BIT_CYL_WRAP) { - t->inputs[i] = ureg_DECL_fs_input_cyl(ureg, - inputSemanticName[i], - inputSemanticIndex[i], - interpMode[i], - TGSI_CYLINDRICAL_WRAP_X); - } - else { - t->inputs[i] = ureg_DECL_fs_input(ureg, - inputSemanticName[i], - inputSemanticIndex[i], - interpMode[i]); - } - } - - if (program->InputsRead & FRAG_BIT_WPOS) { - /* Must do this after setting up t->inputs, and before - * emitting constant references, below: - */ - emit_wpos(st_context(ctx), t, program, ureg); - } - - if (program->InputsRead & FRAG_BIT_FACE) { - emit_face_var( t, program ); - } - - /* - * Declare output attributes. - */ - for (i = 0; i < numOutputs; i++) { - switch (outputSemanticName[i]) { - case TGSI_SEMANTIC_POSITION: - t->outputs[i] = ureg_DECL_output( ureg, - TGSI_SEMANTIC_POSITION, /* Z / Depth */ - outputSemanticIndex[i] ); - - t->outputs[i] = ureg_writemask( t->outputs[i], - TGSI_WRITEMASK_Z ); - break; - case TGSI_SEMANTIC_STENCIL: - t->outputs[i] = ureg_DECL_output( ureg, - TGSI_SEMANTIC_STENCIL, /* Stencil */ - outputSemanticIndex[i] ); - t->outputs[i] = ureg_writemask( t->outputs[i], - TGSI_WRITEMASK_Y ); - break; - case TGSI_SEMANTIC_COLOR: - t->outputs[i] = ureg_DECL_output( ureg, - TGSI_SEMANTIC_COLOR, - outputSemanticIndex[i] ); - break; - default: - debug_assert(0); - return 0; - } - } - } - else if (procType == TGSI_PROCESSOR_GEOMETRY) { - for (i = 0; i < numInputs; i++) { - t->inputs[i] = ureg_DECL_gs_input(ureg, - i, - inputSemanticName[i], - inputSemanticIndex[i]); - } - - for (i = 0; i < numOutputs; i++) { - t->outputs[i] = ureg_DECL_output( ureg, - outputSemanticName[i], - outputSemanticIndex[i] ); - } - } - else { - assert(procType == TGSI_PROCESSOR_VERTEX); - - for (i = 0; i < numInputs; i++) { - t->inputs[i] = ureg_DECL_vs_input(ureg, i); - } - - for (i = 0; i < numOutputs; i++) { - t->outputs[i] = ureg_DECL_output( ureg, - outputSemanticName[i], - outputSemanticIndex[i] ); - if ((outputSemanticName[i] == TGSI_SEMANTIC_PSIZE) && program->Id) { - /* Writing to the point size result register requires special - * handling to implement clamping. - */ - static const gl_state_index pointSizeClampState[STATE_LENGTH] - = { STATE_INTERNAL, STATE_POINT_SIZE_IMPL_CLAMP, 0, 0, 0 }; - /* XXX: note we are modifying the incoming shader here! Need to - * do this before emitting the constant decls below, or this - * will be missed: - */ - unsigned pointSizeClampConst = - _mesa_add_state_reference(program->Parameters, - pointSizeClampState); - struct ureg_dst psizregtemp = ureg_DECL_temporary( ureg ); - t->pointSizeConst = ureg_DECL_constant( ureg, pointSizeClampConst ); - t->pointSizeResult = t->outputs[i]; - t->pointSizeOutIndex = i; - t->outputs[i] = psizregtemp; - } - } - if (passthrough_edgeflags) - emit_edgeflags( t, program ); - } - - /* Declare address register. - */ - if (program->NumAddressRegs > 0) { - debug_assert( program->NumAddressRegs == 1 ); - t->address[0] = ureg_DECL_address( ureg ); - } - - /* Declare misc input registers - */ - { - GLbitfield sysInputs = program->SystemValuesRead; - unsigned numSys = 0; - for (i = 0; sysInputs; i++) { - if (sysInputs & (1 << i)) { - unsigned semName = mesa_sysval_to_semantic[i]; - t->systemValues[i] = ureg_DECL_system_value(ureg, numSys, semName, 0); - numSys++; - sysInputs &= ~(1 << i); - } - } - } - - if (program->IndirectRegisterFiles & (1 << PROGRAM_TEMPORARY)) { - /* If temps are accessed with indirect addressing, declare temporaries - * in sequential order. Else, we declare them on demand elsewhere. - */ - for (i = 0; i < program->NumTemporaries; i++) { - /* XXX use TGSI_FILE_TEMPORARY_ARRAY when it's supported by ureg */ - t->temps[i] = ureg_DECL_temporary( t->ureg ); - } - } - - /* Emit constants and immediates. Mesa uses a single index space - * for these, so we put all the translated regs in t->constants. - */ - if (program->Parameters) { - t->constants = CALLOC( program->Parameters->NumParameters, - sizeof t->constants[0] ); - if (t->constants == NULL) { - ret = PIPE_ERROR_OUT_OF_MEMORY; - goto out; - } - - for (i = 0; i < program->Parameters->NumParameters; i++) { - switch (program->Parameters->Parameters[i].Type) { - case PROGRAM_ENV_PARAM: - case PROGRAM_LOCAL_PARAM: - case PROGRAM_STATE_VAR: - case PROGRAM_NAMED_PARAM: - case PROGRAM_UNIFORM: - t->constants[i] = ureg_DECL_constant( ureg, i ); - break; - - /* Emit immediates only when there's no indirect addressing of - * the const buffer. - * FIXME: Be smarter and recognize param arrays: - * indirect addressing is only valid within the referenced - * array. - */ - case PROGRAM_CONSTANT: - if (program->IndirectRegisterFiles & PROGRAM_ANY_CONST) - t->constants[i] = ureg_DECL_constant( ureg, i ); - else - t->constants[i] = - ureg_DECL_immediate( ureg, - program->Parameters->ParameterValues[i], - 4 ); - break; - default: - break; - } - } - } - - /* texture samplers */ - for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { - if (program->SamplersUsed & (1 << i)) { - t->samplers[i] = ureg_DECL_sampler( ureg, i ); - } - } - - /* Emit each instruction in turn: - */ - for (i = 0; i < program->NumInstructions; i++) { - set_insn_start( t, ureg_get_instruction_number( ureg )); - compile_instruction( t, &program->Instructions[i] ); - - if (t->prevInstWrotePointSize && program->Id) { - /* The previous instruction wrote to the (fake) vertex point size - * result register. Now we need to clamp that value to the min/max - * point size range, putting the result into the real point size - * register. - * Note that we can't do this easily at the end of program due to - * possible early return. - */ - set_insn_start( t, ureg_get_instruction_number( ureg )); - ureg_MAX( t->ureg, - ureg_writemask(t->outputs[t->pointSizeOutIndex], WRITEMASK_X), - ureg_src(t->outputs[t->pointSizeOutIndex]), - ureg_swizzle(t->pointSizeConst, 1,1,1,1)); - ureg_MIN( t->ureg, ureg_writemask(t->pointSizeResult, WRITEMASK_X), - ureg_src(t->outputs[t->pointSizeOutIndex]), - ureg_swizzle(t->pointSizeConst, 2,2,2,2)); - } - t->prevInstWrotePointSize = GL_FALSE; - } - - /* Fix up all emitted labels: - */ - for (i = 0; i < t->labels_count; i++) { - ureg_fixup_label( ureg, - t->labels[i].token, - t->insn[t->labels[i].branch_target] ); - } - -out: - FREE(t->insn); - FREE(t->labels); - FREE(t->constants); - - if (t->error) { - debug_printf("%s: translate error flag set\n", __FUNCTION__); - } - - return ret; -} - - -/** - * Tokens cannot be free with free otherwise the builtin gallium - * malloc debugging will get confused. - */ -void -st_free_tokens(const struct tgsi_token *tokens) -{ - FREE((void *)tokens); -} +/**************************************************************************
+ *
+ * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+/*
+ * \author
+ * Michal Krol,
+ * Keith Whitwell
+ */
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_context.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_shader_tokens.h"
+#include "pipe/p_state.h"
+#include "tgsi/tgsi_ureg.h"
+#include "st_mesa_to_tgsi.h"
+#include "st_context.h"
+#include "program/prog_instruction.h"
+#include "program/prog_parameter.h"
+#include "util/u_debug.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+
+#define PROGRAM_ANY_CONST ((1 << PROGRAM_LOCAL_PARAM) | \
+ (1 << PROGRAM_ENV_PARAM) | \
+ (1 << PROGRAM_STATE_VAR) | \
+ (1 << PROGRAM_NAMED_PARAM) | \
+ (1 << PROGRAM_CONSTANT) | \
+ (1 << PROGRAM_UNIFORM))
+
+
+struct label {
+ unsigned branch_target;
+ unsigned token;
+};
+
+
+/**
+ * Intermediate state used during shader translation.
+ */
+struct st_translate {
+ struct ureg_program *ureg;
+
+ struct ureg_dst temps[MAX_PROGRAM_TEMPS];
+ struct ureg_src *constants;
+ struct ureg_dst outputs[PIPE_MAX_SHADER_OUTPUTS];
+ struct ureg_src inputs[PIPE_MAX_SHADER_INPUTS];
+ struct ureg_dst address[1];
+ struct ureg_src samplers[PIPE_MAX_SAMPLERS];
+ struct ureg_src systemValues[SYSTEM_VALUE_MAX];
+
+ /* Extra info for handling point size clamping in vertex shader */
+ struct ureg_dst pointSizeResult; /**< Actual point size output register */
+ struct ureg_src pointSizeConst; /**< Point size range constant register */
+ GLint pointSizeOutIndex; /**< Temp point size output register */
+ GLboolean prevInstWrotePointSize;
+
+ const GLuint *inputMapping;
+ const GLuint *outputMapping;
+
+ /* For every instruction that contains a label (eg CALL), keep
+ * details so that we can go back afterwards and emit the correct
+ * tgsi instruction number for each label.
+ */
+ struct label *labels;
+ unsigned labels_size;
+ unsigned labels_count;
+
+ /* Keep a record of the tgsi instruction number that each mesa
+ * instruction starts at, will be used to fix up labels after
+ * translation.
+ */
+ unsigned *insn;
+ unsigned insn_size;
+ unsigned insn_count;
+
+ unsigned procType; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */
+
+ boolean error;
+};
+
+
+/** Map Mesa's SYSTEM_VALUE_x to TGSI_SEMANTIC_x */
+static unsigned mesa_sysval_to_semantic[SYSTEM_VALUE_MAX] = {
+ TGSI_SEMANTIC_FACE,
+ TGSI_SEMANTIC_INSTANCEID
+};
+
+
+/**
+ * Make note of a branch to a label in the TGSI code.
+ * After we've emitted all instructions, we'll go over the list
+ * of labels built here and patch the TGSI code with the actual
+ * location of each label.
+ */
+static unsigned *get_label( struct st_translate *t,
+ unsigned branch_target )
+{
+ unsigned i;
+
+ if (t->labels_count + 1 >= t->labels_size) {
+ unsigned old_size = t->labels_size;
+ t->labels_size = 1 << (util_logbase2(t->labels_size) + 1);
+ t->labels = REALLOC( t->labels,
+ old_size * sizeof t->labels[0],
+ t->labels_size * sizeof t->labels[0] );
+ if (t->labels == NULL) {
+ static unsigned dummy;
+ t->error = TRUE;
+ return &dummy;
+ }
+ }
+
+ i = t->labels_count++;
+ t->labels[i].branch_target = branch_target;
+ return &t->labels[i].token;
+}
+
+
+/**
+ * Called prior to emitting the TGSI code for each Mesa instruction.
+ * Allocate additional space for instructions if needed.
+ * Update the insn[] array so the next Mesa instruction points to
+ * the next TGSI instruction.
+ */
+static void set_insn_start( struct st_translate *t,
+ unsigned start )
+{
+ if (t->insn_count + 1 >= t->insn_size) {
+ unsigned old_size = t->insn_size;
+ t->insn_size = 1 << (util_logbase2(t->insn_size) + 1);
+ t->insn = REALLOC( t->insn,
+ old_size * sizeof t->insn[0],
+ t->insn_size * sizeof t->insn[0] );
+ if (t->insn == NULL) {
+ t->error = TRUE;
+ return;
+ }
+ }
+
+ t->insn[t->insn_count++] = start;
+}
+
+
+/**
+ * Map a Mesa dst register to a TGSI ureg_dst register.
+ */
+static struct ureg_dst
+dst_register( struct st_translate *t,
+ gl_register_file file,
+ GLuint index )
+{
+ switch( file ) {
+ case PROGRAM_UNDEFINED:
+ return ureg_dst_undef();
+
+ case PROGRAM_TEMPORARY:
+ if (ureg_dst_is_undef(t->temps[index]))
+ t->temps[index] = ureg_DECL_temporary( t->ureg );
+
+ return t->temps[index];
+
+ case PROGRAM_OUTPUT:
+ if (t->procType == TGSI_PROCESSOR_VERTEX && index == VERT_RESULT_PSIZ)
+ t->prevInstWrotePointSize = GL_TRUE;
+
+ if (t->procType == TGSI_PROCESSOR_VERTEX)
+ assert(index < VERT_RESULT_MAX);
+ else if (t->procType == TGSI_PROCESSOR_FRAGMENT)
+ assert(index < FRAG_RESULT_MAX);
+ else
+ assert(index < GEOM_RESULT_MAX);
+
+ assert(t->outputMapping[index] < Elements(t->outputs));
+
+ return t->outputs[t->outputMapping[index]];
+
+ case PROGRAM_ADDRESS:
+ return t->address[index];
+
+ default:
+ debug_assert( 0 );
+ return ureg_dst_undef();
+ }
+}
+
+
+/**
+ * Map a Mesa src register to a TGSI ureg_src register.
+ */
+static struct ureg_src
+src_register( struct st_translate *t,
+ gl_register_file file,
+ GLint index )
+{
+ switch( file ) {
+ case PROGRAM_UNDEFINED:
+ return ureg_src_undef();
+
+ case PROGRAM_TEMPORARY:
+ assert(index >= 0);
+ assert(index < Elements(t->temps));
+ if (ureg_dst_is_undef(t->temps[index]))
+ t->temps[index] = ureg_DECL_temporary( t->ureg );
+ return ureg_src(t->temps[index]);
+
+ case PROGRAM_NAMED_PARAM:
+ case PROGRAM_ENV_PARAM:
+ case PROGRAM_LOCAL_PARAM:
+ case PROGRAM_UNIFORM:
+ assert(index >= 0);
+ return t->constants[index];
+ case PROGRAM_STATE_VAR:
+ case PROGRAM_CONSTANT: /* ie, immediate */
+ if (index < 0)
+ return ureg_DECL_constant( t->ureg, 0 );
+ else
+ return t->constants[index];
+
+ case PROGRAM_INPUT:
+ assert(t->inputMapping[index] < Elements(t->inputs));
+ return t->inputs[t->inputMapping[index]];
+
+ case PROGRAM_OUTPUT:
+ assert(t->outputMapping[index] < Elements(t->outputs));
+ return ureg_src(t->outputs[t->outputMapping[index]]); /* not needed? */
+
+ case PROGRAM_ADDRESS:
+ return ureg_src(t->address[index]);
+
+ case PROGRAM_SYSTEM_VALUE:
+ assert(index < Elements(t->systemValues));
+ return t->systemValues[index];
+
+ default:
+ debug_assert( 0 );
+ return ureg_src_undef();
+ }
+}
+
+
+/**
+ * Map mesa texture target to TGSI texture target.
+ */
+static unsigned
+translate_texture_target( GLuint textarget,
+ GLboolean shadow )
+{
+ if (shadow) {
+ switch( textarget ) {
+ case TEXTURE_1D_INDEX: return TGSI_TEXTURE_SHADOW1D;
+ case TEXTURE_2D_INDEX: return TGSI_TEXTURE_SHADOW2D;
+ case TEXTURE_RECT_INDEX: return TGSI_TEXTURE_SHADOWRECT;
+ default: break;
+ }
+ }
+
+ switch( textarget ) {
+ case TEXTURE_1D_INDEX: return TGSI_TEXTURE_1D;
+ case TEXTURE_2D_INDEX: return TGSI_TEXTURE_2D;
+ case TEXTURE_3D_INDEX: return TGSI_TEXTURE_3D;
+ case TEXTURE_CUBE_INDEX: return TGSI_TEXTURE_CUBE;
+ case TEXTURE_RECT_INDEX: return TGSI_TEXTURE_RECT;
+ case TEXTURE_1D_ARRAY_INDEX: return TGSI_TEXTURE_1D_ARRAY;
+ case TEXTURE_2D_ARRAY_INDEX: return TGSI_TEXTURE_2D_ARRAY;
+ default:
+ debug_assert( 0 );
+ return TGSI_TEXTURE_1D;
+ }
+}
+
+
+/**
+ * Create a TGSI ureg_dst register from a Mesa dest register.
+ */
+static struct ureg_dst
+translate_dst( struct st_translate *t,
+ const struct prog_dst_register *DstReg,
+ boolean saturate )
+{
+ struct ureg_dst dst = dst_register( t,
+ DstReg->File,
+ DstReg->Index );
+
+ dst = ureg_writemask( dst,
+ DstReg->WriteMask );
+
+ if (saturate)
+ dst = ureg_saturate( dst );
+
+ if (DstReg->RelAddr)
+ dst = ureg_dst_indirect( dst, ureg_src(t->address[0]) );
+
+ return dst;
+}
+
+
+/**
+ * Create a TGSI ureg_src register from a Mesa src register.
+ */
+static struct ureg_src
+translate_src( struct st_translate *t,
+ const struct prog_src_register *SrcReg )
+{
+ struct ureg_src src = src_register( t, SrcReg->File, SrcReg->Index );
+
+ if (t->procType == TGSI_PROCESSOR_GEOMETRY && SrcReg->HasIndex2) {
+ src = src_register( t, SrcReg->File, SrcReg->Index2 );
+ if (SrcReg->RelAddr2)
+ src = ureg_src_dimension_indirect( src, ureg_src(t->address[0]),
+ SrcReg->Index);
+ else
+ src = ureg_src_dimension( src, SrcReg->Index);
+ }
+
+ src = ureg_swizzle( src,
+ GET_SWZ( SrcReg->Swizzle, 0 ) & 0x3,
+ GET_SWZ( SrcReg->Swizzle, 1 ) & 0x3,
+ GET_SWZ( SrcReg->Swizzle, 2 ) & 0x3,
+ GET_SWZ( SrcReg->Swizzle, 3 ) & 0x3);
+
+ if (SrcReg->Negate == NEGATE_XYZW)
+ src = ureg_negate(src);
+
+ if (SrcReg->Abs)
+ src = ureg_abs(src);
+
+ if (SrcReg->RelAddr) {
+ src = ureg_src_indirect( src, ureg_src(t->address[0]));
+ if (SrcReg->File != PROGRAM_INPUT &&
+ SrcReg->File != PROGRAM_OUTPUT) {
+ /* If SrcReg->Index was negative, it was set to zero in
+ * src_register(). Reassign it now. But don't do this
+ * for input/output regs since they get remapped while
+ * const buffers don't.
+ */
+ src.Index = SrcReg->Index;
+ }
+ }
+
+ return src;
+}
+
+
+static struct ureg_src swizzle_4v( struct ureg_src src,
+ const unsigned *swz )
+{
+ return ureg_swizzle( src, swz[0], swz[1], swz[2], swz[3] );
+}
+
+
+/**
+ * Translate a SWZ instruction into a MOV, MUL or MAD instruction. EG:
+ *
+ * SWZ dst, src.x-y10
+ *
+ * becomes:
+ *
+ * MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
+ */
+static void emit_swz( struct st_translate *t,
+ struct ureg_dst dst,
+ const struct prog_src_register *SrcReg )
+{
+ struct ureg_program *ureg = t->ureg;
+ struct ureg_src src = src_register( t, SrcReg->File, SrcReg->Index );
+
+ unsigned negate_mask = SrcReg->Negate;
+
+ unsigned one_mask = ((GET_SWZ(SrcReg->Swizzle, 0) == SWIZZLE_ONE) << 0 |
+ (GET_SWZ(SrcReg->Swizzle, 1) == SWIZZLE_ONE) << 1 |
+ (GET_SWZ(SrcReg->Swizzle, 2) == SWIZZLE_ONE) << 2 |
+ (GET_SWZ(SrcReg->Swizzle, 3) == SWIZZLE_ONE) << 3);
+
+ unsigned zero_mask = ((GET_SWZ(SrcReg->Swizzle, 0) == SWIZZLE_ZERO) << 0 |
+ (GET_SWZ(SrcReg->Swizzle, 1) == SWIZZLE_ZERO) << 1 |
+ (GET_SWZ(SrcReg->Swizzle, 2) == SWIZZLE_ZERO) << 2 |
+ (GET_SWZ(SrcReg->Swizzle, 3) == SWIZZLE_ZERO) << 3);
+
+ unsigned negative_one_mask = one_mask & negate_mask;
+ unsigned positive_one_mask = one_mask & ~negate_mask;
+
+ struct ureg_src imm;
+ unsigned i;
+ unsigned mul_swizzle[4] = {0,0,0,0};
+ unsigned add_swizzle[4] = {0,0,0,0};
+ unsigned src_swizzle[4] = {0,0,0,0};
+ boolean need_add = FALSE;
+ boolean need_mul = FALSE;
+
+ if (dst.WriteMask == 0)
+ return;
+
+ /* Is this just a MOV?
+ */
+ if (zero_mask == 0 &&
+ one_mask == 0 &&
+ (negate_mask == 0 || negate_mask == TGSI_WRITEMASK_XYZW))
+ {
+ ureg_MOV( ureg, dst, translate_src( t, SrcReg ));
+ return;
+ }
+
+#define IMM_ZERO 0
+#define IMM_ONE 1
+#define IMM_NEG_ONE 2
+
+ imm = ureg_imm3f( ureg, 0, 1, -1 );
+
+ for (i = 0; i < 4; i++) {
+ unsigned bit = 1 << i;
+
+ if (dst.WriteMask & bit) {
+ if (positive_one_mask & bit) {
+ mul_swizzle[i] = IMM_ZERO;
+ add_swizzle[i] = IMM_ONE;
+ need_add = TRUE;
+ }
+ else if (negative_one_mask & bit) {
+ mul_swizzle[i] = IMM_ZERO;
+ add_swizzle[i] = IMM_NEG_ONE;
+ need_add = TRUE;
+ }
+ else if (zero_mask & bit) {
+ mul_swizzle[i] = IMM_ZERO;
+ add_swizzle[i] = IMM_ZERO;
+ need_add = TRUE;
+ }
+ else {
+ add_swizzle[i] = IMM_ZERO;
+ src_swizzle[i] = GET_SWZ(SrcReg->Swizzle, i);
+ need_mul = TRUE;
+ if (negate_mask & bit) {
+ mul_swizzle[i] = IMM_NEG_ONE;
+ }
+ else {
+ mul_swizzle[i] = IMM_ONE;
+ }
+ }
+ }
+ }
+
+ if (need_mul && need_add) {
+ ureg_MAD( ureg,
+ dst,
+ swizzle_4v( src, src_swizzle ),
+ swizzle_4v( imm, mul_swizzle ),
+ swizzle_4v( imm, add_swizzle ) );
+ }
+ else if (need_mul) {
+ ureg_MUL( ureg,
+ dst,
+ swizzle_4v( src, src_swizzle ),
+ swizzle_4v( imm, mul_swizzle ) );
+ }
+ else if (need_add) {
+ ureg_MOV( ureg,
+ dst,
+ swizzle_4v( imm, add_swizzle ) );
+ }
+ else {
+ debug_assert(0);
+ }
+
+#undef IMM_ZERO
+#undef IMM_ONE
+#undef IMM_NEG_ONE
+}
+
+
+/**
+ * Negate the value of DDY to match GL semantics where (0,0) is the
+ * lower-left corner of the window.
+ * Note that the GL_ARB_fragment_coord_conventions extension will
+ * effect this someday.
+ */
+static void emit_ddy( struct st_translate *t,
+ struct ureg_dst dst,
+ const struct prog_src_register *SrcReg )
+{
+ struct ureg_program *ureg = t->ureg;
+ struct ureg_src src = translate_src( t, SrcReg );
+ src = ureg_negate( src );
+ ureg_DDY( ureg, dst, src );
+}
+
+
+
+static unsigned
+translate_opcode( unsigned op )
+{
+ switch( op ) {
+ case OPCODE_ARL:
+ return TGSI_OPCODE_ARL;
+ case OPCODE_ABS:
+ return TGSI_OPCODE_ABS;
+ case OPCODE_ADD:
+ return TGSI_OPCODE_ADD;
+ case OPCODE_BGNLOOP:
+ return TGSI_OPCODE_BGNLOOP;
+ case OPCODE_BGNSUB:
+ return TGSI_OPCODE_BGNSUB;
+ case OPCODE_BRA:
+ return TGSI_OPCODE_BRA;
+ case OPCODE_BRK:
+ return TGSI_OPCODE_BRK;
+ case OPCODE_CAL:
+ return TGSI_OPCODE_CAL;
+ case OPCODE_CMP:
+ return TGSI_OPCODE_CMP;
+ case OPCODE_CONT:
+ return TGSI_OPCODE_CONT;
+ case OPCODE_COS:
+ return TGSI_OPCODE_COS;
+ case OPCODE_DDX:
+ return TGSI_OPCODE_DDX;
+ case OPCODE_DDY:
+ return TGSI_OPCODE_DDY;
+ case OPCODE_DP2:
+ return TGSI_OPCODE_DP2;
+ case OPCODE_DP2A:
+ return TGSI_OPCODE_DP2A;
+ case OPCODE_DP3:
+ return TGSI_OPCODE_DP3;
+ case OPCODE_DP4:
+ return TGSI_OPCODE_DP4;
+ case OPCODE_DPH:
+ return TGSI_OPCODE_DPH;
+ case OPCODE_DST:
+ return TGSI_OPCODE_DST;
+ case OPCODE_ELSE:
+ return TGSI_OPCODE_ELSE;
+ case OPCODE_EMIT_VERTEX:
+ return TGSI_OPCODE_EMIT;
+ case OPCODE_END_PRIMITIVE:
+ return TGSI_OPCODE_ENDPRIM;
+ case OPCODE_ENDIF:
+ return TGSI_OPCODE_ENDIF;
+ case OPCODE_ENDLOOP:
+ return TGSI_OPCODE_ENDLOOP;
+ case OPCODE_ENDSUB:
+ return TGSI_OPCODE_ENDSUB;
+ case OPCODE_EX2:
+ return TGSI_OPCODE_EX2;
+ case OPCODE_EXP:
+ return TGSI_OPCODE_EXP;
+ case OPCODE_FLR:
+ return TGSI_OPCODE_FLR;
+ case OPCODE_FRC:
+ return TGSI_OPCODE_FRC;
+ case OPCODE_IF:
+ return TGSI_OPCODE_IF;
+ case OPCODE_TRUNC:
+ return TGSI_OPCODE_TRUNC;
+ case OPCODE_KIL:
+ return TGSI_OPCODE_KIL;
+ case OPCODE_KIL_NV:
+ return TGSI_OPCODE_KILP;
+ case OPCODE_LG2:
+ return TGSI_OPCODE_LG2;
+ case OPCODE_LOG:
+ return TGSI_OPCODE_LOG;
+ case OPCODE_LIT:
+ return TGSI_OPCODE_LIT;
+ case OPCODE_LRP:
+ return TGSI_OPCODE_LRP;
+ case OPCODE_MAD:
+ return TGSI_OPCODE_MAD;
+ case OPCODE_MAX:
+ return TGSI_OPCODE_MAX;
+ case OPCODE_MIN:
+ return TGSI_OPCODE_MIN;
+ case OPCODE_MOV:
+ return TGSI_OPCODE_MOV;
+ case OPCODE_MUL:
+ return TGSI_OPCODE_MUL;
+ case OPCODE_NOP:
+ return TGSI_OPCODE_NOP;
+ case OPCODE_NRM3:
+ return TGSI_OPCODE_NRM;
+ case OPCODE_NRM4:
+ return TGSI_OPCODE_NRM4;
+ case OPCODE_POW:
+ return TGSI_OPCODE_POW;
+ case OPCODE_RCP:
+ return TGSI_OPCODE_RCP;
+ case OPCODE_RET:
+ return TGSI_OPCODE_RET;
+ case OPCODE_RSQ:
+ return TGSI_OPCODE_RSQ;
+ case OPCODE_SCS:
+ return TGSI_OPCODE_SCS;
+ case OPCODE_SEQ:
+ return TGSI_OPCODE_SEQ;
+ case OPCODE_SGE:
+ return TGSI_OPCODE_SGE;
+ case OPCODE_SGT:
+ return TGSI_OPCODE_SGT;
+ case OPCODE_SIN:
+ return TGSI_OPCODE_SIN;
+ case OPCODE_SLE:
+ return TGSI_OPCODE_SLE;
+ case OPCODE_SLT:
+ return TGSI_OPCODE_SLT;
+ case OPCODE_SNE:
+ return TGSI_OPCODE_SNE;
+ case OPCODE_SSG:
+ return TGSI_OPCODE_SSG;
+ case OPCODE_SUB:
+ return TGSI_OPCODE_SUB;
+ case OPCODE_TEX:
+ return TGSI_OPCODE_TEX;
+ case OPCODE_TXB:
+ return TGSI_OPCODE_TXB;
+ case OPCODE_TXD:
+ return TGSI_OPCODE_TXD;
+ case OPCODE_TXL:
+ return TGSI_OPCODE_TXL;
+ case OPCODE_TXP:
+ return TGSI_OPCODE_TXP;
+ case OPCODE_XPD:
+ return TGSI_OPCODE_XPD;
+ case OPCODE_END:
+ return TGSI_OPCODE_END;
+ default:
+ debug_assert( 0 );
+ return TGSI_OPCODE_NOP;
+ }
+}
+
+
+static void
+compile_instruction(
+ struct st_translate *t,
+ const struct prog_instruction *inst )
+{
+ struct ureg_program *ureg = t->ureg;
+ GLuint i;
+ struct ureg_dst dst[1];
+ struct ureg_src src[4];
+ unsigned num_dst;
+ unsigned num_src;
+
+ num_dst = _mesa_num_inst_dst_regs( inst->Opcode );
+ num_src = _mesa_num_inst_src_regs( inst->Opcode );
+
+ if (num_dst)
+ dst[0] = translate_dst( t,
+ &inst->DstReg,
+ inst->SaturateMode );
+
+ for (i = 0; i < num_src; i++)
+ src[i] = translate_src( t, &inst->SrcReg[i] );
+
+ switch( inst->Opcode ) {
+ case OPCODE_SWZ:
+ emit_swz( t, dst[0], &inst->SrcReg[0] );
+ return;
+
+ case OPCODE_BGNLOOP:
+ case OPCODE_CAL:
+ case OPCODE_ELSE:
+ case OPCODE_ENDLOOP:
+ case OPCODE_IF:
+ debug_assert(num_dst == 0);
+ ureg_label_insn( ureg,
+ translate_opcode( inst->Opcode ),
+ src, num_src,
+ get_label( t, inst->BranchTarget ));
+ return;
+
+ case OPCODE_TEX:
+ case OPCODE_TXB:
+ case OPCODE_TXD:
+ case OPCODE_TXL:
+ case OPCODE_TXP:
+ src[num_src++] = t->samplers[inst->TexSrcUnit];
+ ureg_tex_insn( ureg,
+ translate_opcode( inst->Opcode ),
+ dst, num_dst,
+ translate_texture_target( inst->TexSrcTarget,
+ inst->TexShadow ),
+ src, num_src );
+ return;
+
+ case OPCODE_SCS:
+ dst[0] = ureg_writemask(dst[0], TGSI_WRITEMASK_XY );
+ ureg_insn( ureg,
+ translate_opcode( inst->Opcode ),
+ dst, num_dst,
+ src, num_src );
+ break;
+
+ case OPCODE_XPD:
+ dst[0] = ureg_writemask(dst[0], TGSI_WRITEMASK_XYZ );
+ ureg_insn( ureg,
+ translate_opcode( inst->Opcode ),
+ dst, num_dst,
+ src, num_src );
+ break;
+
+ case OPCODE_NOISE1:
+ case OPCODE_NOISE2:
+ case OPCODE_NOISE3:
+ case OPCODE_NOISE4:
+ /* At some point, a motivated person could add a better
+ * implementation of noise. Currently not even the nvidia
+ * binary drivers do anything more than this. In any case, the
+ * place to do this is in the GL state tracker, not the poor
+ * driver.
+ */
+ ureg_MOV( ureg, dst[0], ureg_imm1f(ureg, 0.5) );
+ break;
+
+ case OPCODE_DDY:
+ emit_ddy( t, dst[0], &inst->SrcReg[0] );
+ break;
+
+ default:
+ ureg_insn( ureg,
+ translate_opcode( inst->Opcode ),
+ dst, num_dst,
+ src, num_src );
+ break;
+ }
+}
+
+
+/**
+ * Emit the TGSI instructions to adjust the WPOS pixel center convention
+ * Basically, add (adjX, adjY) to the fragment position.
+ */
+static void
+emit_adjusted_wpos( struct st_translate *t,
+ const struct gl_program *program,
+ GLfloat adjX, GLfloat adjY)
+{
+ struct ureg_program *ureg = t->ureg;
+ struct ureg_dst wpos_temp = ureg_DECL_temporary(ureg);
+ struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]];
+
+ /* Note that we bias X and Y and pass Z and W through unchanged.
+ * The shader might also use gl_FragCoord.w and .z.
+ */
+ ureg_ADD(ureg, wpos_temp, wpos_input,
+ ureg_imm4f(ureg, adjX, adjY, 0.0f, 0.0f));
+
+ t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp);
+}
+
+
+/**
+ * Emit the TGSI instructions for inverting the WPOS y coordinate.
+ * This code is unavoidable because it also depends on whether
+ * a FBO is bound (STATE_FB_WPOS_Y_TRANSFORM).
+ */
+static void
+emit_wpos_inversion( struct st_translate *t,
+ const struct gl_program *program,
+ boolean invert)
+{
+ struct ureg_program *ureg = t->ureg;
+
+ /* Fragment program uses fragment position input.
+ * Need to replace instances of INPUT[WPOS] with temp T
+ * where T = INPUT[WPOS] by y is inverted.
+ */
+ static const gl_state_index wposTransformState[STATE_LENGTH]
+ = { STATE_INTERNAL, STATE_FB_WPOS_Y_TRANSFORM, 0, 0, 0 };
+
+ /* XXX: note we are modifying the incoming shader here! Need to
+ * do this before emitting the constant decls below, or this
+ * will be missed:
+ */
+ unsigned wposTransConst = _mesa_add_state_reference(program->Parameters,
+ wposTransformState);
+
+ struct ureg_src wpostrans = ureg_DECL_constant( ureg, wposTransConst );
+ struct ureg_dst wpos_temp;
+ struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]];
+
+ /* MOV wpos_temp, input[wpos]
+ */
+ if (wpos_input.File == TGSI_FILE_TEMPORARY)
+ wpos_temp = ureg_dst(wpos_input);
+ else {
+ wpos_temp = ureg_DECL_temporary( ureg );
+ ureg_MOV( ureg, wpos_temp, wpos_input );
+ }
+
+ if (invert) {
+ /* MAD wpos_temp.y, wpos_input, wpostrans.xxxx, wpostrans.yyyy
+ */
+ ureg_MAD( ureg,
+ ureg_writemask(wpos_temp, TGSI_WRITEMASK_Y ),
+ wpos_input,
+ ureg_scalar(wpostrans, 0),
+ ureg_scalar(wpostrans, 1));
+ } else {
+ /* MAD wpos_temp.y, wpos_input, wpostrans.zzzz, wpostrans.wwww
+ */
+ ureg_MAD( ureg,
+ ureg_writemask(wpos_temp, TGSI_WRITEMASK_Y ),
+ wpos_input,
+ ureg_scalar(wpostrans, 2),
+ ureg_scalar(wpostrans, 3));
+ }
+
+ /* Use wpos_temp as position input from here on:
+ */
+ t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp);
+}
+
+
+/**
+ * Emit fragment position/ooordinate code.
+ */
+static void
+emit_wpos(struct st_context *st,
+ struct st_translate *t,
+ const struct gl_program *program,
+ struct ureg_program *ureg)
+{
+ const struct gl_fragment_program *fp =
+ (const struct gl_fragment_program *) program;
+ struct pipe_screen *pscreen = st->pipe->screen;
+ boolean invert = FALSE;
+
+ if (fp->OriginUpperLeft) {
+ /* Fragment shader wants origin in upper-left */
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) {
+ /* the driver supports upper-left origin */
+ }
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) {
+ /* the driver supports lower-left origin, need to invert Y */
+ ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
+ invert = TRUE;
+ }
+ else
+ assert(0);
+ }
+ else {
+ /* Fragment shader wants origin in lower-left */
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT))
+ /* the driver supports lower-left origin */
+ ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT))
+ /* the driver supports upper-left origin, need to invert Y */
+ invert = TRUE;
+ else
+ assert(0);
+ }
+
+ if (fp->PixelCenterInteger) {
+ /* Fragment shader wants pixel center integer */
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER))
+ /* the driver supports pixel center integer */
+ ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER))
+ /* the driver supports pixel center half integer, need to bias X,Y */
+ emit_adjusted_wpos(t, program, 0.5f, invert ? 0.5f : -0.5f);
+ else
+ assert(0);
+ }
+ else {
+ /* Fragment shader wants pixel center half integer */
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) {
+ /* the driver supports pixel center half integer */
+ }
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) {
+ /* the driver supports pixel center integer, need to bias X,Y */
+ ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
+ emit_adjusted_wpos(t, program, 0.5f, invert ? -0.5f : 0.5f);
+ }
+ else
+ assert(0);
+ }
+
+ /* we invert after adjustment so that we avoid the MOV to temporary,
+ * and reuse the adjustment ADD instead */
+ emit_wpos_inversion(t, program, invert);
+}
+
+
+/**
+ * OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
+ * TGSI uses +1 for front, -1 for back.
+ * This function converts the TGSI value to the GL value. Simply clamping/
+ * saturating the value to [0,1] does the job.
+ */
+static void
+emit_face_var( struct st_translate *t,
+ const struct gl_program *program )
+{
+ struct ureg_program *ureg = t->ureg;
+ struct ureg_dst face_temp = ureg_DECL_temporary( ureg );
+ struct ureg_src face_input = t->inputs[t->inputMapping[FRAG_ATTRIB_FACE]];
+
+ /* MOV_SAT face_temp, input[face]
+ */
+ face_temp = ureg_saturate( face_temp );
+ ureg_MOV( ureg, face_temp, face_input );
+
+ /* Use face_temp as face input from here on:
+ */
+ t->inputs[t->inputMapping[FRAG_ATTRIB_FACE]] = ureg_src(face_temp);
+}
+
+
+static void
+emit_edgeflags( struct st_translate *t,
+ const struct gl_program *program )
+{
+ struct ureg_program *ureg = t->ureg;
+ struct ureg_dst edge_dst = t->outputs[t->outputMapping[VERT_RESULT_EDGE]];
+ struct ureg_src edge_src = t->inputs[t->inputMapping[VERT_ATTRIB_EDGEFLAG]];
+
+ ureg_MOV( ureg, edge_dst, edge_src );
+}
+
+
+/**
+ * Translate Mesa program to TGSI format.
+ * \param program the program to translate
+ * \param numInputs number of input registers used
+ * \param inputMapping maps Mesa fragment program inputs to TGSI generic
+ * input indexes
+ * \param inputSemanticName the TGSI_SEMANTIC flag for each input
+ * \param inputSemanticIndex the semantic index (ex: which texcoord) for
+ * each input
+ * \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
+ * \param numOutputs number of output registers used
+ * \param outputMapping maps Mesa fragment program outputs to TGSI
+ * generic outputs
+ * \param outputSemanticName the TGSI_SEMANTIC flag for each output
+ * \param outputSemanticIndex the semantic index (ex: which texcoord) for
+ * each output
+ *
+ * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
+ */
+enum pipe_error
+st_translate_mesa_program(
+ struct gl_context *ctx,
+ uint procType,
+ struct ureg_program *ureg,
+ const struct gl_program *program,
+ GLuint numInputs,
+ const GLuint inputMapping[],
+ const ubyte inputSemanticName[],
+ const ubyte inputSemanticIndex[],
+ const GLuint interpMode[],
+ GLuint numOutputs,
+ const GLuint outputMapping[],
+ const ubyte outputSemanticName[],
+ const ubyte outputSemanticIndex[],
+ boolean passthrough_edgeflags )
+{
+ struct st_translate translate, *t;
+ unsigned i;
+ enum pipe_error ret = PIPE_OK;
+
+ assert(numInputs <= Elements(t->inputs));
+ assert(numOutputs <= Elements(t->outputs));
+
+ t = &translate;
+ memset(t, 0, sizeof *t);
+
+ t->procType = procType;
+ t->inputMapping = inputMapping;
+ t->outputMapping = outputMapping;
+ t->ureg = ureg;
+ t->pointSizeOutIndex = -1;
+ t->prevInstWrotePointSize = GL_FALSE;
+
+ /*_mesa_print_program(program);*/
+
+ /*
+ * Declare input attributes.
+ */
+ if (procType == TGSI_PROCESSOR_FRAGMENT) {
+ for (i = 0; i < numInputs; i++) {
+ if (program->InputFlags[0] & PROG_PARAM_BIT_CYL_WRAP) {
+ t->inputs[i] = ureg_DECL_fs_input_cyl(ureg,
+ inputSemanticName[i],
+ inputSemanticIndex[i],
+ interpMode[i],
+ TGSI_CYLINDRICAL_WRAP_X);
+ }
+ else {
+ t->inputs[i] = ureg_DECL_fs_input(ureg,
+ inputSemanticName[i],
+ inputSemanticIndex[i],
+ interpMode[i]);
+ }
+ }
+
+ if (program->InputsRead & FRAG_BIT_WPOS) {
+ /* Must do this after setting up t->inputs, and before
+ * emitting constant references, below:
+ */
+ emit_wpos(st_context(ctx), t, program, ureg);
+ }
+
+ if (program->InputsRead & FRAG_BIT_FACE) {
+ emit_face_var( t, program );
+ }
+
+ /*
+ * Declare output attributes.
+ */
+ for (i = 0; i < numOutputs; i++) {
+ switch (outputSemanticName[i]) {
+ case TGSI_SEMANTIC_POSITION:
+ t->outputs[i] = ureg_DECL_output( ureg,
+ TGSI_SEMANTIC_POSITION, /* Z / Depth */
+ outputSemanticIndex[i] );
+
+ t->outputs[i] = ureg_writemask( t->outputs[i],
+ TGSI_WRITEMASK_Z );
+ break;
+ case TGSI_SEMANTIC_STENCIL:
+ t->outputs[i] = ureg_DECL_output( ureg,
+ TGSI_SEMANTIC_STENCIL, /* Stencil */
+ outputSemanticIndex[i] );
+ t->outputs[i] = ureg_writemask( t->outputs[i],
+ TGSI_WRITEMASK_Y );
+ break;
+ case TGSI_SEMANTIC_COLOR:
+ t->outputs[i] = ureg_DECL_output( ureg,
+ TGSI_SEMANTIC_COLOR,
+ outputSemanticIndex[i] );
+ break;
+ default:
+ debug_assert(0);
+ return 0;
+ }
+ }
+ }
+ else if (procType == TGSI_PROCESSOR_GEOMETRY) {
+ for (i = 0; i < numInputs; i++) {
+ t->inputs[i] = ureg_DECL_gs_input(ureg,
+ i,
+ inputSemanticName[i],
+ inputSemanticIndex[i]);
+ }
+
+ for (i = 0; i < numOutputs; i++) {
+ t->outputs[i] = ureg_DECL_output( ureg,
+ outputSemanticName[i],
+ outputSemanticIndex[i] );
+ }
+ }
+ else {
+ assert(procType == TGSI_PROCESSOR_VERTEX);
+
+ for (i = 0; i < numInputs; i++) {
+ t->inputs[i] = ureg_DECL_vs_input(ureg, i);
+ }
+
+ for (i = 0; i < numOutputs; i++) {
+ t->outputs[i] = ureg_DECL_output( ureg,
+ outputSemanticName[i],
+ outputSemanticIndex[i] );
+ if ((outputSemanticName[i] == TGSI_SEMANTIC_PSIZE) && program->Id) {
+ /* Writing to the point size result register requires special
+ * handling to implement clamping.
+ */
+ static const gl_state_index pointSizeClampState[STATE_LENGTH]
+ = { STATE_INTERNAL, STATE_POINT_SIZE_IMPL_CLAMP, 0, 0, 0 };
+ /* XXX: note we are modifying the incoming shader here! Need to
+ * do this before emitting the constant decls below, or this
+ * will be missed:
+ */
+ unsigned pointSizeClampConst =
+ _mesa_add_state_reference(program->Parameters,
+ pointSizeClampState);
+ struct ureg_dst psizregtemp = ureg_DECL_temporary( ureg );
+ t->pointSizeConst = ureg_DECL_constant( ureg, pointSizeClampConst );
+ t->pointSizeResult = t->outputs[i];
+ t->pointSizeOutIndex = i;
+ t->outputs[i] = psizregtemp;
+ }
+ }
+ if (passthrough_edgeflags)
+ emit_edgeflags( t, program );
+ }
+
+ /* Declare address register.
+ */
+ if (program->NumAddressRegs > 0) {
+ debug_assert( program->NumAddressRegs == 1 );
+ t->address[0] = ureg_DECL_address( ureg );
+ }
+
+ /* Declare misc input registers
+ */
+ {
+ GLbitfield sysInputs = program->SystemValuesRead;
+ unsigned numSys = 0;
+ for (i = 0; sysInputs; i++) {
+ if (sysInputs & (1 << i)) {
+ unsigned semName = mesa_sysval_to_semantic[i];
+ t->systemValues[i] = ureg_DECL_system_value(ureg, numSys, semName, 0);
+ numSys++;
+ sysInputs &= ~(1 << i);
+ }
+ }
+ }
+
+ if (program->IndirectRegisterFiles & (1 << PROGRAM_TEMPORARY)) {
+ /* If temps are accessed with indirect addressing, declare temporaries
+ * in sequential order. Else, we declare them on demand elsewhere.
+ */
+ for (i = 0; i < program->NumTemporaries; i++) {
+ /* XXX use TGSI_FILE_TEMPORARY_ARRAY when it's supported by ureg */
+ t->temps[i] = ureg_DECL_temporary( t->ureg );
+ }
+ }
+
+ /* Emit constants and immediates. Mesa uses a single index space
+ * for these, so we put all the translated regs in t->constants.
+ */
+ if (program->Parameters) {
+ t->constants = CALLOC( program->Parameters->NumParameters,
+ sizeof t->constants[0] );
+ if (t->constants == NULL) {
+ ret = PIPE_ERROR_OUT_OF_MEMORY;
+ goto out;
+ }
+
+ for (i = 0; i < program->Parameters->NumParameters; i++) {
+ switch (program->Parameters->Parameters[i].Type) {
+ case PROGRAM_ENV_PARAM:
+ case PROGRAM_LOCAL_PARAM:
+ case PROGRAM_STATE_VAR:
+ case PROGRAM_NAMED_PARAM:
+ case PROGRAM_UNIFORM:
+ t->constants[i] = ureg_DECL_constant( ureg, i );
+ break;
+
+ /* Emit immediates only when there's no indirect addressing of
+ * the const buffer.
+ * FIXME: Be smarter and recognize param arrays:
+ * indirect addressing is only valid within the referenced
+ * array.
+ */
+ case PROGRAM_CONSTANT:
+ if (program->IndirectRegisterFiles & PROGRAM_ANY_CONST)
+ t->constants[i] = ureg_DECL_constant( ureg, i );
+ else
+ t->constants[i] =
+ ureg_DECL_immediate( ureg,
+ program->Parameters->ParameterValues[i],
+ 4 );
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ /* texture samplers */
+ for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
+ if (program->SamplersUsed & (1 << i)) {
+ t->samplers[i] = ureg_DECL_sampler( ureg, i );
+ }
+ }
+
+ /* Emit each instruction in turn:
+ */
+ for (i = 0; i < program->NumInstructions; i++) {
+ set_insn_start( t, ureg_get_instruction_number( ureg ));
+ compile_instruction( t, &program->Instructions[i] );
+
+ if (t->prevInstWrotePointSize && program->Id) {
+ /* The previous instruction wrote to the (fake) vertex point size
+ * result register. Now we need to clamp that value to the min/max
+ * point size range, putting the result into the real point size
+ * register.
+ * Note that we can't do this easily at the end of program due to
+ * possible early return.
+ */
+ set_insn_start( t, ureg_get_instruction_number( ureg ));
+ ureg_MAX( t->ureg,
+ ureg_writemask(t->outputs[t->pointSizeOutIndex], WRITEMASK_X),
+ ureg_src(t->outputs[t->pointSizeOutIndex]),
+ ureg_swizzle(t->pointSizeConst, 1,1,1,1));
+ ureg_MIN( t->ureg, ureg_writemask(t->pointSizeResult, WRITEMASK_X),
+ ureg_src(t->outputs[t->pointSizeOutIndex]),
+ ureg_swizzle(t->pointSizeConst, 2,2,2,2));
+ }
+ t->prevInstWrotePointSize = GL_FALSE;
+ }
+
+ /* Fix up all emitted labels:
+ */
+ for (i = 0; i < t->labels_count; i++) {
+ ureg_fixup_label( ureg,
+ t->labels[i].token,
+ t->insn[t->labels[i].branch_target] );
+ }
+
+out:
+ FREE(t->insn);
+ FREE(t->labels);
+ FREE(t->constants);
+
+ if (t->error) {
+ debug_printf("%s: translate error flag set\n", __FUNCTION__);
+ }
+
+ return ret;
+}
+
+
+/**
+ * Tokens cannot be free with free otherwise the builtin gallium
+ * malloc debugging will get confused.
+ */
+void
+st_free_tokens(const struct tgsi_token *tokens)
+{
+ FREE((void *)tokens);
+}
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