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Diffstat (limited to 'src/mesa/pipe/i915simple/i915_fpc_translate.c')
-rw-r--r--src/mesa/pipe/i915simple/i915_fpc_translate.c1135
1 files changed, 0 insertions, 1135 deletions
diff --git a/src/mesa/pipe/i915simple/i915_fpc_translate.c b/src/mesa/pipe/i915simple/i915_fpc_translate.c
deleted file mode 100644
index 868f0c7e04..0000000000
--- a/src/mesa/pipe/i915simple/i915_fpc_translate.c
+++ /dev/null
@@ -1,1135 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2007 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.
- *
- **************************************************************************/
-
-
-#include <stdarg.h>
-
-#include "i915_reg.h"
-#include "i915_context.h"
-#include "i915_fpc.h"
-
-#include "pipe/p_shader_tokens.h"
-#include "pipe/tgsi/util/tgsi_parse.h"
-
-#include "pipe/draw/draw_vertex.h"
-
-
-/**
- * Simple pass-through fragment shader to use when we don't have
- * a real shader (or it fails to compile for some reason).
- */
-static unsigned passthrough[] =
-{
- _3DSTATE_PIXEL_SHADER_PROGRAM | ((2*3)-1),
-
- /* declare input color:
- */
- (D0_DCL |
- (REG_TYPE_T << D0_TYPE_SHIFT) |
- (T_DIFFUSE << D0_NR_SHIFT) |
- D0_CHANNEL_ALL),
- 0,
- 0,
-
- /* move to output color:
- */
- (A0_MOV |
- (REG_TYPE_OC << A0_DEST_TYPE_SHIFT) |
- A0_DEST_CHANNEL_ALL |
- (REG_TYPE_T << A0_SRC0_TYPE_SHIFT) |
- (T_DIFFUSE << A0_SRC0_NR_SHIFT)),
- 0x01230000, /* .xyzw */
- 0
-};
-
-
-/* 1, -1/3!, 1/5!, -1/7! */
-static const float sin_constants[4] = { 1.0,
- -1.0f / (3 * 2 * 1),
- 1.0f / (5 * 4 * 3 * 2 * 1),
- -1.0f / (7 * 6 * 5 * 4 * 3 * 2 * 1)
-};
-
-/* 1, -1/2!, 1/4!, -1/6! */
-static const float cos_constants[4] = { 1.0,
- -1.0f / (2 * 1),
- 1.0f / (4 * 3 * 2 * 1),
- -1.0f / (6 * 5 * 4 * 3 * 2 * 1)
-};
-
-
-
-/**
- * component-wise negation of ureg
- */
-static INLINE int
-negate(int reg, int x, int y, int z, int w)
-{
- /* Another neat thing about the UREG representation */
- return reg ^ (((x & 1) << UREG_CHANNEL_X_NEGATE_SHIFT) |
- ((y & 1) << UREG_CHANNEL_Y_NEGATE_SHIFT) |
- ((z & 1) << UREG_CHANNEL_Z_NEGATE_SHIFT) |
- ((w & 1) << UREG_CHANNEL_W_NEGATE_SHIFT));
-}
-
-
-static void
-i915_use_passthrough_shader(struct i915_context *i915)
-{
- debug_printf("**** Using i915 pass-through fragment shader\n");
-
- i915->current.program = (uint *) MALLOC(sizeof(passthrough));
- if (i915->current.program) {
- memcpy(i915->current.program, passthrough, sizeof(passthrough));
- i915->current.program_len = Elements(passthrough);
- }
-
- i915->current.num_constants[PIPE_SHADER_FRAGMENT] = 0;
- i915->current.num_user_constants[PIPE_SHADER_FRAGMENT] = 0;
-}
-
-
-void
-i915_program_error(struct i915_fp_compile *p, const char *msg, ...)
-{
- va_list args;
- char buffer[1024];
-
- debug_printf("i915_program_error: ");
- va_start( args, msg );
- vsprintf( buffer, msg, args );
- va_end( args );
- debug_printf(buffer);
- debug_printf("\n");
-
- p->error = 1;
-}
-
-
-
-/**
- * Construct a ureg for the given source register. Will emit
- * constants, apply swizzling and negation as needed.
- */
-static uint
-src_vector(struct i915_fp_compile *p,
- const struct tgsi_full_src_register *source)
-{
- uint index = source->SrcRegister.Index;
- uint src, sem_name, sem_ind;
-
- switch (source->SrcRegister.File) {
- case TGSI_FILE_TEMPORARY:
- if (source->SrcRegister.Index >= I915_MAX_TEMPORARY) {
- i915_program_error(p, "Exceeded max temporary reg");
- return 0;
- }
- src = UREG(REG_TYPE_R, index);
- break;
- case TGSI_FILE_INPUT:
- /* XXX: Packing COL1, FOGC into a single attribute works for
- * texenv programs, but will fail for real fragment programs
- * that use these attributes and expect them to be a full 4
- * components wide. Could use a texcoord to pass these
- * attributes if necessary, but that won't work in the general
- * case.
- *
- * We also use a texture coordinate to pass wpos when possible.
- */
-
- /* use vertex format info to map a slot number to a VF attrib */
- assert(index < p->vertex_info->num_attribs);
-
- sem_name = p->input_semantic_name[index];
- sem_ind = p->input_semantic_index[index];
-
- switch (sem_name) {
- case TGSI_SEMANTIC_POSITION:
- debug_printf("SKIP SEM POS\n");
- /*
- assert(p->wpos_tex != -1);
- src = i915_emit_decl(p, REG_TYPE_T, p->wpos_tex, D0_CHANNEL_ALL);
- */
- break;
- case TGSI_SEMANTIC_COLOR:
- if (sem_ind == 0) {
- src = i915_emit_decl(p, REG_TYPE_T, T_DIFFUSE, D0_CHANNEL_ALL);
- }
- else {
- /* secondary color */
- assert(sem_ind == 1);
- src = i915_emit_decl(p, REG_TYPE_T, T_SPECULAR, D0_CHANNEL_XYZ);
- src = swizzle(src, X, Y, Z, ONE);
- }
- break;
- case TGSI_SEMANTIC_FOG:
- src = i915_emit_decl(p, REG_TYPE_T, T_FOG_W, D0_CHANNEL_W);
- src = swizzle(src, W, W, W, W);
- break;
- case TGSI_SEMANTIC_GENERIC:
- /* usually a texcoord */
- src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + sem_ind, D0_CHANNEL_ALL);
- break;
- default:
- i915_program_error(p, "Bad source->Index");
- return 0;
- }
- break;
-
- case TGSI_FILE_IMMEDIATE:
- /* XXX unfinished - need to append immediates onto const buffer */
- /* fall-through */
- case TGSI_FILE_CONSTANT:
- src = UREG(REG_TYPE_CONST, index);
- break;
-
- default:
- i915_program_error(p, "Bad source->File");
- return 0;
- }
-
- if (source->SrcRegister.Extended) {
- src = swizzle(src,
- source->SrcRegisterExtSwz.ExtSwizzleX,
- source->SrcRegisterExtSwz.ExtSwizzleY,
- source->SrcRegisterExtSwz.ExtSwizzleZ,
- source->SrcRegisterExtSwz.ExtSwizzleW);
- }
- else {
- src = swizzle(src,
- source->SrcRegister.SwizzleX,
- source->SrcRegister.SwizzleY,
- source->SrcRegister.SwizzleZ,
- source->SrcRegister.SwizzleW);
- }
-
-
- /* There's both negate-all-components and per-component negation.
- * Try to handle both here.
- */
- {
- int nx = source->SrcRegisterExtSwz.NegateX;
- int ny = source->SrcRegisterExtSwz.NegateY;
- int nz = source->SrcRegisterExtSwz.NegateZ;
- int nw = source->SrcRegisterExtSwz.NegateW;
- if (source->SrcRegister.Negate) {
- nx = !nx;
- ny = !ny;
- nz = !nz;
- nw = !nw;
- }
- src = negate(src, nx, ny, nz, nw);
- }
-
- /* no abs() or post-abs negation */
-#if 0
- /* XXX assertions disabled to allow arbfplight.c to run */
- /* XXX enable these assertions, or fix things */
- assert(!source->SrcRegisterExtMod.Absolute);
- assert(!source->SrcRegisterExtMod.Negate);
-#endif
- return src;
-}
-
-
-/**
- * Construct a ureg for a destination register.
- */
-static uint
-get_result_vector(struct i915_fp_compile *p,
- const struct tgsi_full_dst_register *dest)
-{
- switch (dest->DstRegister.File) {
- case TGSI_FILE_OUTPUT:
- {
- uint sem_name = p->output_semantic_name[dest->DstRegister.Index];
- switch (sem_name) {
- case TGSI_SEMANTIC_POSITION:
- return UREG(REG_TYPE_OD, 0);
- case TGSI_SEMANTIC_COLOR:
- return UREG(REG_TYPE_OC, 0);
- default:
- i915_program_error(p, "Bad inst->DstReg.Index/semantics");
- return 0;
- }
- }
- case TGSI_FILE_TEMPORARY:
- return UREG(REG_TYPE_R, dest->DstRegister.Index);
- default:
- i915_program_error(p, "Bad inst->DstReg.File");
- return 0;
- }
-}
-
-
-/**
- * Compute flags for saturation and writemask.
- */
-static uint
-get_result_flags(const struct tgsi_full_instruction *inst)
-{
- const uint writeMask
- = inst->FullDstRegisters[0].DstRegister.WriteMask;
- uint flags = 0x0;
-
- if (inst->Instruction.Saturate == TGSI_SAT_ZERO_ONE)
- flags |= A0_DEST_SATURATE;
-
- if (writeMask & TGSI_WRITEMASK_X)
- flags |= A0_DEST_CHANNEL_X;
- if (writeMask & TGSI_WRITEMASK_Y)
- flags |= A0_DEST_CHANNEL_Y;
- if (writeMask & TGSI_WRITEMASK_Z)
- flags |= A0_DEST_CHANNEL_Z;
- if (writeMask & TGSI_WRITEMASK_W)
- flags |= A0_DEST_CHANNEL_W;
-
- return flags;
-}
-
-
-/**
- * Convert TGSI_TEXTURE_x token to DO_SAMPLE_TYPE_x token
- */
-static uint
-translate_tex_src_target(struct i915_fp_compile *p, uint tex)
-{
- switch (tex) {
- case TGSI_TEXTURE_1D:
- return D0_SAMPLE_TYPE_2D;
- case TGSI_TEXTURE_2D:
- return D0_SAMPLE_TYPE_2D;
- case TGSI_TEXTURE_RECT:
- return D0_SAMPLE_TYPE_2D;
- case TGSI_TEXTURE_3D:
- return D0_SAMPLE_TYPE_VOLUME;
- case TGSI_TEXTURE_CUBE:
- return D0_SAMPLE_TYPE_CUBE;
- default:
- i915_program_error(p, "TexSrc type");
- return 0;
- }
-}
-
-
-/**
- * Generate texel lookup instruction.
- */
-static void
-emit_tex(struct i915_fp_compile *p,
- const struct tgsi_full_instruction *inst,
- uint opcode)
-{
- uint texture = inst->InstructionExtTexture.Texture;
- uint unit = inst->FullSrcRegisters[1].SrcRegister.Index;
- uint tex = translate_tex_src_target( p, texture );
- uint sampler = i915_emit_decl(p, REG_TYPE_S, unit, tex);
- uint coord = src_vector( p, &inst->FullSrcRegisters[0]);
-
- i915_emit_texld( p,
- get_result_vector( p, &inst->FullDstRegisters[0] ),
- get_result_flags( inst ),
- sampler,
- coord,
- opcode);
-}
-
-
-/**
- * Generate a simple arithmetic instruction
- * \param opcode the i915 opcode
- * \param numArgs the number of input/src arguments
- */
-static void
-emit_simple_arith(struct i915_fp_compile *p,
- const struct tgsi_full_instruction *inst,
- uint opcode, uint numArgs)
-{
- uint arg1, arg2, arg3;
-
- assert(numArgs <= 3);
-
- arg1 = (numArgs < 1) ? 0 : src_vector( p, &inst->FullSrcRegisters[0] );
- arg2 = (numArgs < 2) ? 0 : src_vector( p, &inst->FullSrcRegisters[1] );
- arg3 = (numArgs < 3) ? 0 : src_vector( p, &inst->FullSrcRegisters[2] );
-
- i915_emit_arith( p,
- opcode,
- get_result_vector( p, &inst->FullDstRegisters[0]),
- get_result_flags( inst ), 0,
- arg1,
- arg2,
- arg3 );
-}
-
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
-/*
- * Translate TGSI instruction to i915 instruction.
- *
- * Possible concerns:
- *
- * SIN, COS -- could use another taylor step?
- * LIT -- results seem a little different to sw mesa
- * LOG -- different to mesa on negative numbers, but this is conformant.
- */
-static void
-i915_translate_instruction(struct i915_fp_compile *p,
- const struct tgsi_full_instruction *inst)
-{
- uint writemask;
- uint src0, src1, src2, flags;
- uint tmp = 0;
-
- switch (inst->Instruction.Opcode) {
- case TGSI_OPCODE_ABS:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- i915_emit_arith(p,
- A0_MAX,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- src0, negate(src0, 1, 1, 1, 1), 0);
- break;
-
- case TGSI_OPCODE_ADD:
- emit_simple_arith(p, inst, A0_ADD, 2);
- break;
-
- case TGSI_OPCODE_CMP:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
- src2 = src_vector(p, &inst->FullSrcRegisters[2]);
- i915_emit_arith(p, A0_CMP,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst),
- 0, src0, src2, src1); /* NOTE: order of src2, src1 */
- break;
-
- case TGSI_OPCODE_COS:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- tmp = i915_get_utemp(p);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_X, 0,
- src0, i915_emit_const1f(p, 1.0f / (float) (M_PI * 2.0)), 0);
-
- i915_emit_arith(p, A0_MOD, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0);
-
- /* By choosing different taylor constants, could get rid of this mul:
- */
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_X, 0,
- tmp, i915_emit_const1f(p, (float) (M_PI * 2.0)), 0);
-
- /*
- * t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
- * t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, 1
- * t0 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1
- * result = DP4 t0, cos_constants
- */
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_XY, 0,
- swizzle(tmp, X, X, ONE, ONE),
- swizzle(tmp, X, ONE, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_XYZ, 0,
- swizzle(tmp, X, Y, X, ONE),
- swizzle(tmp, X, X, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_XYZ, 0,
- swizzle(tmp, X, X, Z, ONE),
- swizzle(tmp, Z, ONE, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_DP4,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(tmp, ONE, Z, Y, X),
- i915_emit_const4fv(p, cos_constants), 0);
- break;
-
- case TGSI_OPCODE_DP3:
- emit_simple_arith(p, inst, A0_DP3, 2);
- break;
-
- case TGSI_OPCODE_DP4:
- emit_simple_arith(p, inst, A0_DP4, 2);
- break;
-
- case TGSI_OPCODE_DPH:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
-
- i915_emit_arith(p,
- A0_DP4,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(src0, X, Y, Z, ONE), src1, 0);
- break;
-
- case TGSI_OPCODE_DST:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
-
- /* result[0] = 1 * 1;
- * result[1] = a[1] * b[1];
- * result[2] = a[2] * 1;
- * result[3] = 1 * b[3];
- */
- i915_emit_arith(p,
- A0_MUL,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(src0, ONE, Y, Z, ONE),
- swizzle(src1, ONE, Y, ONE, W), 0);
- break;
-
- case TGSI_OPCODE_END:
- /* no-op */
- break;
-
- case TGSI_OPCODE_EX2:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
-
- i915_emit_arith(p,
- A0_EXP,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(src0, X, X, X, X), 0, 0);
- break;
-
- case TGSI_OPCODE_FLR:
- emit_simple_arith(p, inst, A0_FLR, 1);
- break;
-
- case TGSI_OPCODE_FRC:
- emit_simple_arith(p, inst, A0_FRC, 1);
- break;
-
- case TGSI_OPCODE_KIL:
- /* unconditional kill */
- assert(0); /* not tested yet */
-#if 0
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- tmp = i915_get_utemp(p);
-
- i915_emit_texld(p, tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */
- 0, src0, T0_TEXKILL);
-#endif
- break;
-
- case TGSI_OPCODE_KILP:
- /* kill if src[0].x < 0 || src[0].y < 0 ... */
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- tmp = i915_get_utemp(p);
-
- i915_emit_texld(p, tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */
- 0, src0, T0_TEXKILL);
- break;
-
- case TGSI_OPCODE_LG2:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
-
- i915_emit_arith(p,
- A0_LOG,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(src0, X, X, X, X), 0, 0);
- break;
-
- case TGSI_OPCODE_LIT:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- tmp = i915_get_utemp(p);
-
- /* tmp = max( a.xyzw, a.00zw )
- * XXX: Clamp tmp.w to -128..128
- * tmp.y = log(tmp.y)
- * tmp.y = tmp.w * tmp.y
- * tmp.y = exp(tmp.y)
- * result = cmp (a.11-x1, a.1x01, a.1xy1 )
- */
- i915_emit_arith(p, A0_MAX, tmp, A0_DEST_CHANNEL_ALL, 0,
- src0, swizzle(src0, ZERO, ZERO, Z, W), 0);
-
- i915_emit_arith(p, A0_LOG, tmp, A0_DEST_CHANNEL_Y, 0,
- swizzle(tmp, Y, Y, Y, Y), 0, 0);
-
- i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_Y, 0,
- swizzle(tmp, ZERO, Y, ZERO, ZERO),
- swizzle(tmp, ZERO, W, ZERO, ZERO), 0);
-
- i915_emit_arith(p, A0_EXP, tmp, A0_DEST_CHANNEL_Y, 0,
- swizzle(tmp, Y, Y, Y, Y), 0, 0);
-
- i915_emit_arith(p, A0_CMP,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- negate(swizzle(tmp, ONE, ONE, X, ONE), 0, 0, 1, 0),
- swizzle(tmp, ONE, X, ZERO, ONE),
- swizzle(tmp, ONE, X, Y, ONE));
-
- break;
-
- case TGSI_OPCODE_LRP:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
- src2 = src_vector(p, &inst->FullSrcRegisters[2]);
- flags = get_result_flags(inst);
- tmp = i915_get_utemp(p);
-
- /* b*a + c*(1-a)
- *
- * b*a + c - ca
- *
- * tmp = b*a + c,
- * result = (-c)*a + tmp
- */
- i915_emit_arith(p, A0_MAD, tmp,
- flags & A0_DEST_CHANNEL_ALL, 0, src1, src0, src2);
-
- i915_emit_arith(p, A0_MAD,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- flags, 0, negate(src2, 1, 1, 1, 1), src0, tmp);
- break;
-
- case TGSI_OPCODE_MAD:
- emit_simple_arith(p, inst, A0_MAD, 3);
- break;
-
- case TGSI_OPCODE_MAX:
- emit_simple_arith(p, inst, A0_MAX, 2);
- break;
-
- case TGSI_OPCODE_MIN:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
- tmp = i915_get_utemp(p);
- flags = get_result_flags(inst);
-
- i915_emit_arith(p,
- A0_MAX,
- tmp, flags & A0_DEST_CHANNEL_ALL, 0,
- negate(src0, 1, 1, 1, 1),
- negate(src1, 1, 1, 1, 1), 0);
-
- i915_emit_arith(p,
- A0_MOV,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- flags, 0, negate(tmp, 1, 1, 1, 1), 0, 0);
- break;
-
- case TGSI_OPCODE_MOV:
- /* aka TGSI_OPCODE_SWZ */
- emit_simple_arith(p, inst, A0_MOV, 1);
- break;
-
- case TGSI_OPCODE_MUL:
- emit_simple_arith(p, inst, A0_MUL, 2);
- break;
-
- case TGSI_OPCODE_POW:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
- tmp = i915_get_utemp(p);
- flags = get_result_flags(inst);
-
- /* XXX: masking on intermediate values, here and elsewhere.
- */
- i915_emit_arith(p,
- A0_LOG,
- tmp, A0_DEST_CHANNEL_X, 0,
- swizzle(src0, X, X, X, X), 0, 0);
-
- i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_X, 0, tmp, src1, 0);
-
- i915_emit_arith(p,
- A0_EXP,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- flags, 0, swizzle(tmp, X, X, X, X), 0, 0);
- break;
-
- case TGSI_OPCODE_RET:
- /* XXX: no-op? */
- break;
-
- case TGSI_OPCODE_RCP:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
-
- i915_emit_arith(p,
- A0_RCP,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(src0, X, X, X, X), 0, 0);
- break;
-
- case TGSI_OPCODE_RSQ:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
-
- i915_emit_arith(p,
- A0_RSQ,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(src0, X, X, X, X), 0, 0);
- break;
-
- case TGSI_OPCODE_SCS:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- tmp = i915_get_utemp(p);
-
- /*
- * t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
- * t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, x
- * t1 = MUL t0.xyyw t0.yz11 ; x^7 x^5 x^3 x
- * scs.x = DP4 t1, sin_constants
- * t1 = MUL t0.xxz1 t0.z111 ; x^6 x^4 x^2 1
- * scs.y = DP4 t1, cos_constants
- */
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_XY, 0,
- swizzle(src0, X, X, ONE, ONE),
- swizzle(src0, X, ONE, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_ALL, 0,
- swizzle(tmp, X, Y, X, Y),
- swizzle(tmp, X, X, ONE, ONE), 0);
-
- writemask = inst->FullDstRegisters[0].DstRegister.WriteMask;
-
- if (writemask & TGSI_WRITEMASK_Y) {
- uint tmp1;
-
- if (writemask & TGSI_WRITEMASK_X)
- tmp1 = i915_get_utemp(p);
- else
- tmp1 = tmp;
-
- i915_emit_arith(p,
- A0_MUL,
- tmp1, A0_DEST_CHANNEL_ALL, 0,
- swizzle(tmp, X, Y, Y, W),
- swizzle(tmp, X, Z, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_DP4,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- A0_DEST_CHANNEL_Y, 0,
- swizzle(tmp1, W, Z, Y, X),
- i915_emit_const4fv(p, sin_constants), 0);
- }
-
- if (writemask & TGSI_WRITEMASK_X) {
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_XYZ, 0,
- swizzle(tmp, X, X, Z, ONE),
- swizzle(tmp, Z, ONE, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_DP4,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- A0_DEST_CHANNEL_X, 0,
- swizzle(tmp, ONE, Z, Y, X),
- i915_emit_const4fv(p, cos_constants), 0);
- }
- break;
-
- case TGSI_OPCODE_SGE:
- emit_simple_arith(p, inst, A0_SGE, 2);
- break;
-
- case TGSI_OPCODE_SIN:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- tmp = i915_get_utemp(p);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_X, 0,
- src0, i915_emit_const1f(p, 1.0f / (float) (M_PI * 2.0)), 0);
-
- i915_emit_arith(p, A0_MOD, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0);
-
- /* By choosing different taylor constants, could get rid of this mul:
- */
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_X, 0,
- tmp, i915_emit_const1f(p, (float) (M_PI * 2.0)), 0);
-
- /*
- * t0.xy = MUL x.xx11, x.x1111 ; x^2, x, 1, 1
- * t0 = MUL t0.xyxy t0.xx11 ; x^4, x^3, x^2, x
- * t1 = MUL t0.xyyw t0.yz11 ; x^7 x^5 x^3 x
- * result = DP4 t1.wzyx, sin_constants
- */
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_XY, 0,
- swizzle(tmp, X, X, ONE, ONE),
- swizzle(tmp, X, ONE, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_ALL, 0,
- swizzle(tmp, X, Y, X, Y),
- swizzle(tmp, X, X, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_ALL, 0,
- swizzle(tmp, X, Y, Y, W),
- swizzle(tmp, X, Z, ONE, ONE), 0);
-
- i915_emit_arith(p,
- A0_DP4,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(tmp, W, Z, Y, X),
- i915_emit_const4fv(p, sin_constants), 0);
- break;
-
- case TGSI_OPCODE_SLT:
- emit_simple_arith(p, inst, A0_SLT, 2);
- break;
-
- case TGSI_OPCODE_SUB:
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
-
- i915_emit_arith(p,
- A0_ADD,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- src0, negate(src1, 1, 1, 1, 1), 0);
- break;
-
- case TGSI_OPCODE_TEX:
- if (inst->FullSrcRegisters[0].SrcRegisterExtSwz.ExtDivide
- == TGSI_EXTSWIZZLE_W) {
- emit_tex(p, inst, T0_TEXLDP);
- }
- else {
- emit_tex(p, inst, T0_TEXLD);
- }
- break;
-
- case TGSI_OPCODE_TXB:
- emit_tex(p, inst, T0_TEXLDB);
- break;
-
- case TGSI_OPCODE_XPD:
- /* Cross product:
- * result.x = src0.y * src1.z - src0.z * src1.y;
- * result.y = src0.z * src1.x - src0.x * src1.z;
- * result.z = src0.x * src1.y - src0.y * src1.x;
- * result.w = undef;
- */
- src0 = src_vector(p, &inst->FullSrcRegisters[0]);
- src1 = src_vector(p, &inst->FullSrcRegisters[1]);
- tmp = i915_get_utemp(p);
-
- i915_emit_arith(p,
- A0_MUL,
- tmp, A0_DEST_CHANNEL_ALL, 0,
- swizzle(src0, Z, X, Y, ONE),
- swizzle(src1, Y, Z, X, ONE), 0);
-
- i915_emit_arith(p,
- A0_MAD,
- get_result_vector(p, &inst->FullDstRegisters[0]),
- get_result_flags(inst), 0,
- swizzle(src0, Y, Z, X, ONE),
- swizzle(src1, Z, X, Y, ONE),
- negate(tmp, 1, 1, 1, 0));
- break;
-
- default:
- i915_program_error(p, "bad opcode %d", inst->Instruction.Opcode);
- return;
- }
-
- i915_release_utemps(p);
-}
-
-
-/**
- * Translate TGSI fragment shader into i915 hardware instructions.
- * \param p the translation state
- * \param tokens the TGSI token array
- */
-static void
-i915_translate_instructions(struct i915_fp_compile *p,
- const struct tgsi_token *tokens)
-{
- struct tgsi_parse_context parse;
-
- tgsi_parse_init( &parse, tokens );
-
- while( !tgsi_parse_end_of_tokens( &parse ) ) {
-
- tgsi_parse_token( &parse );
-
- switch( parse.FullToken.Token.Type ) {
- case TGSI_TOKEN_TYPE_DECLARATION:
- if (parse.FullToken.FullDeclaration.Declaration.File
- == TGSI_FILE_INPUT) {
- /* save input register info for use in src_vector() */
- uint ind, sem, semi;
- ind = parse.FullToken.FullDeclaration.u.DeclarationRange.First;
- sem = parse.FullToken.FullDeclaration.Semantic.SemanticName;
- semi = parse.FullToken.FullDeclaration.Semantic.SemanticIndex;
- /*debug_printf("FS Input DECL [%u] sem %u\n", ind, sem);*/
- p->input_semantic_name[ind] = sem;
- p->input_semantic_index[ind] = semi;
- }
- else if (parse.FullToken.FullDeclaration.Declaration.File
- == TGSI_FILE_OUTPUT) {
- /* save output register info for use in get_result_vector() */
- uint ind, sem, semi;
- ind = parse.FullToken.FullDeclaration.u.DeclarationRange.First;
- sem = parse.FullToken.FullDeclaration.Semantic.SemanticName;
- semi = parse.FullToken.FullDeclaration.Semantic.SemanticIndex;
- /*debug_printf("FS Output DECL [%u] sem %u\n", ind, sem);*/
- p->output_semantic_name[ind] = sem;
- p->output_semantic_index[ind] = semi;
- }
- break;
-
- case TGSI_TOKEN_TYPE_IMMEDIATE:
- /* XXX append the immediate to the const buffer... */
- break;
-
- case TGSI_TOKEN_TYPE_INSTRUCTION:
- i915_translate_instruction(p, &parse.FullToken.FullInstruction);
- break;
-
- default:
- assert( 0 );
- }
-
- } /* while */
-
- tgsi_parse_free (&parse);
-}
-
-
-static struct i915_fp_compile *
-i915_init_compile(struct i915_context *i915,
- const struct pipe_shader_state *fs)
-{
- struct i915_fp_compile *p = CALLOC_STRUCT(i915_fp_compile);
-
- p->shader = i915->fs;
-
- p->vertex_info = &i915->current.vertex_info;
-
- /* new constants found during translation get appended after the
- * user-provided constants.
- */
- p->constants = i915->current.constants[PIPE_SHADER_FRAGMENT];
- p->num_constants = i915->current.num_user_constants[PIPE_SHADER_FRAGMENT];
-
- p->nr_tex_indirect = 1; /* correct? */
- p->nr_tex_insn = 0;
- p->nr_alu_insn = 0;
- p->nr_decl_insn = 0;
-
- memset(p->constant_flags, 0, sizeof(p->constant_flags));
-
- p->csr = p->program;
- p->decl = p->declarations;
- p->decl_s = 0;
- p->decl_t = 0;
- p->temp_flag = 0xffff000;
- p->utemp_flag = ~0x7;
-
- p->wpos_tex = -1;
-
- /* initialize the first program word */
- *(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM;
-
- return p;
-}
-
-
-/* Copy compile results to the fragment program struct and destroy the
- * compilation context.
- */
-static void
-i915_fini_compile(struct i915_context *i915, struct i915_fp_compile *p)
-{
- unsigned long program_size = (unsigned long) (p->csr - p->program);
- unsigned long decl_size = (unsigned long) (p->decl - p->declarations);
-
- if (p->nr_tex_indirect > I915_MAX_TEX_INDIRECT)
- i915_program_error(p, "Exceeded max nr indirect texture lookups");
-
- if (p->nr_tex_insn > I915_MAX_TEX_INSN)
- i915_program_error(p, "Exceeded max TEX instructions");
-
- if (p->nr_alu_insn > I915_MAX_ALU_INSN)
- i915_program_error(p, "Exceeded max ALU instructions");
-
- if (p->nr_decl_insn > I915_MAX_DECL_INSN)
- i915_program_error(p, "Exceeded max DECL instructions");
-
- /* free old program, if present */
- if (i915->current.program) {
- FREE(i915->current.program);
- i915->current.program_len = 0;
- }
-
- if (p->error) {
- p->NumNativeInstructions = 0;
- p->NumNativeAluInstructions = 0;
- p->NumNativeTexInstructions = 0;
- p->NumNativeTexIndirections = 0;
-
- i915_use_passthrough_shader(i915);
- }
- else {
- p->NumNativeInstructions
- = p->nr_alu_insn + p->nr_tex_insn + p->nr_decl_insn;
- p->NumNativeAluInstructions = p->nr_alu_insn;
- p->NumNativeTexInstructions = p->nr_tex_insn;
- p->NumNativeTexIndirections = p->nr_tex_indirect;
-
- /* patch in the program length */
- p->declarations[0] |= program_size + decl_size - 2;
-
- /* Copy compilation results to fragment program struct:
- */
- i915->current.program
- = (uint *) MALLOC((program_size + decl_size) * sizeof(uint));
- if (i915->current.program) {
- i915->current.program_len = program_size + decl_size;
-
- memcpy(i915->current.program,
- p->declarations,
- decl_size * sizeof(uint));
-
- memcpy(i915->current.program + decl_size,
- p->program,
- program_size * sizeof(uint));
- }
-
- /* update number of constants */
- i915->current.num_constants[PIPE_SHADER_FRAGMENT] = p->num_constants;
- assert(i915->current.num_constants[PIPE_SHADER_FRAGMENT]
- >= i915->current.num_user_constants[PIPE_SHADER_FRAGMENT]);
- }
-
- /* Release the compilation struct:
- */
- FREE(p);
-}
-
-
-/**
- * Find an unused texture coordinate slot to use for fragment WPOS.
- * Update p->fp->wpos_tex with the result (-1 if no used texcoord slot is found).
- */
-static void
-i915_find_wpos_space(struct i915_fp_compile *p)
-{
-#if 0
- const uint inputs
- = p->shader->inputs_read | (1 << TGSI_ATTRIB_POS); /*XXX hack*/
- uint i;
-
- p->wpos_tex = -1;
-
- if (inputs & (1 << TGSI_ATTRIB_POS)) {
- for (i = 0; i < I915_TEX_UNITS; i++) {
- if ((inputs & (1 << (TGSI_ATTRIB_TEX0 + i))) == 0) {
- p->wpos_tex = i;
- return;
- }
- }
-
- i915_program_error(p, "No free texcoord for wpos value");
- }
-#else
- if (p->shader->input_semantic_name[0] == TGSI_SEMANTIC_POSITION) {
- /* frag shader using the fragment position input */
-#if 0
- assert(0);
-#endif
- }
-#endif
-}
-
-
-
-
-/**
- * Rather than trying to intercept and jiggle depth writes during
- * emit, just move the value into its correct position at the end of
- * the program:
- */
-static void
-i915_fixup_depth_write(struct i915_fp_compile *p)
-{
- /* XXX assuming pos/depth is always in output[0] */
- if (p->shader->output_semantic_name[0] == TGSI_SEMANTIC_POSITION) {
- const uint depth = UREG(REG_TYPE_OD, 0);
-
- i915_emit_arith(p,
- A0_MOV, /* opcode */
- depth, /* dest reg */
- A0_DEST_CHANNEL_W, /* write mask */
- 0, /* saturate? */
- swizzle(depth, X, Y, Z, Z), /* src0 */
- 0, 0 /* src1, src2 */);
- }
-}
-
-
-void
-i915_translate_fragment_program( struct i915_context *i915 )
-{
- struct i915_fp_compile *p = i915_init_compile(i915, i915->fs);
- const struct tgsi_token *tokens = i915->fs->tokens;
-
- i915_find_wpos_space(p);
-
- i915_translate_instructions(p, tokens);
- i915_fixup_depth_write(p);
-
- i915_fini_compile(i915, p);
-}