uint i915_emit_const1f(struct i915_fp_compile * p, float c0) { struct i915_fragment_shader *ifs = p->shader; unsigned reg, idx; if (c0 == 0.0) return swizzle(UREG(REG_TYPE_R, 0), ZERO, ZERO, ZERO, ZERO); if (c0 == 1.0) return swizzle(UREG(REG_TYPE_R, 0), ONE, ONE, ONE, ONE); for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { if (ifs->constant_flags[reg] == I915_CONSTFLAG_USER) continue; for (idx = 0; idx < 4; idx++) { if (!(ifs->constant_flags[reg] & (1 << idx)) || ifs->constants[reg][idx] == c0) { ifs->constants[reg][idx] = c0; ifs->constant_flags[reg] |= 1 << idx; if (reg + 1 > ifs->num_constants) ifs->num_constants = reg + 1; return swizzle(UREG(REG_TYPE_CONST, reg), idx, ZERO, ZERO, ONE); } } } i915_program_error(p, "i915_emit_const1f: out of constants"); return 0; }
GLuint i915_emit_const1f(struct i915_fragment_program * p, GLfloat c0) { GLint reg, idx; if (c0 == 0.0) return swizzle(UREG(REG_TYPE_R, 0), ZERO, ZERO, ZERO, ZERO); if (c0 == 1.0) return swizzle(UREG(REG_TYPE_R, 0), ONE, ONE, ONE, ONE); for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { if (p->constant_flags[reg] == I915_CONSTFLAG_PARAM) continue; for (idx = 0; idx < 4; idx++) { if (!(p->constant_flags[reg] & (1 << idx)) || p->constant[reg][idx] == c0) { p->constant[reg][idx] = c0; p->constant_flags[reg] |= 1 << idx; if (reg + 1 > p->nr_constants) p->nr_constants = reg + 1; return swizzle(UREG(REG_TYPE_CONST, reg), idx, ZERO, ZERO, ONE); } } } fprintf(stderr, "%s: out of constants\n", __FUNCTION__); p->error = 1; return 0; }
/** * Construct a ureg for a destination register. */ static uint get_result_vector(struct i915_fp_compile *p, const struct i915_full_dst_register *dest) { switch (dest->Register.File) { case TGSI_FILE_OUTPUT: { uint sem_name = p->shader->info.output_semantic_name[dest->Register.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->Register.Index); default: i915_program_error(p, "Bad inst->DstReg.File"); return 0; } }
GLuint i915_emit_const4f(struct i915_fragment_program * p, GLfloat c0, GLfloat c1, GLfloat c2, GLfloat c3) { GLint reg; for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { if (p->constant_flags[reg] == 0xf && p->constant[reg][0] == c0 && p->constant[reg][1] == c1 && p->constant[reg][2] == c2 && p->constant[reg][3] == c3) { return UREG(REG_TYPE_CONST, reg); } else if (p->constant_flags[reg] == 0) { p->constant[reg][0] = c0; p->constant[reg][1] = c1; p->constant[reg][2] = c2; p->constant[reg][3] = c3; p->constant_flags[reg] = 0xf; if (reg + 1 > p->nr_constants) p->nr_constants = reg + 1; return UREG(REG_TYPE_CONST, reg); } } fprintf(stderr, "%s: out of constants\n", __FUNCTION__); p->error = 1; return 0; }
GLuint i915_emit_param4fv(struct i915_fragment_program * p, const GLfloat * values) { GLint reg, i; for (i = 0; i < p->nr_params; i++) { if (p->param[i].values == values) return UREG(REG_TYPE_CONST, p->param[i].reg); } for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { if (p->constant_flags[reg] == 0) { p->constant_flags[reg] = I915_CONSTFLAG_PARAM; i = p->nr_params++; p->param[i].values = values; p->param[i].reg = reg; p->params_uptodate = 0; if (reg + 1 > p->nr_constants) p->nr_constants = reg + 1; return UREG(REG_TYPE_CONST, reg); } } fprintf(stderr, "%s: out of constants\n", __FUNCTION__); p->error = 1; return 0; }
uint i915_emit_const4f(struct i915_fp_compile * p, float c0, float c1, float c2, float c3) { struct i915_fragment_shader *ifs = p->shader; unsigned reg; // XXX emit swizzle here for 0, 1, -1 and any combination thereof // we can use swizzle + neg for that for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { if (ifs->constant_flags[reg] == 0xf && ifs->constants[reg][0] == c0 && ifs->constants[reg][1] == c1 && ifs->constants[reg][2] == c2 && ifs->constants[reg][3] == c3) { return UREG(REG_TYPE_CONST, reg); } else if (ifs->constant_flags[reg] == 0) { ifs->constants[reg][0] = c0; ifs->constants[reg][1] = c1; ifs->constants[reg][2] = c2; ifs->constants[reg][3] = c3; ifs->constant_flags[reg] = 0xf; if (reg + 1 > ifs->num_constants) ifs->num_constants = reg + 1; return UREG(REG_TYPE_CONST, reg); } } i915_program_error(p, "i915_emit_const4f: out of constants"); return 0; }
GLuint i915_emit_decl(struct i915_fragment_program *p, GLuint type, GLuint nr, GLuint d0_flags) { GLuint reg = UREG(type, nr); if (type == REG_TYPE_T) { if (p->decl_t & (1 << nr)) return reg; p->decl_t |= (1 << nr); } else if (type == REG_TYPE_S) { if (p->decl_s & (1 << nr)) return reg; p->decl_s |= (1 << nr); } else return reg; *(p->decl++) = (D0_DCL | D0_DEST(reg) | d0_flags); *(p->decl++) = D1_MBZ; *(p->decl++) = D2_MBZ; p->nr_decl_insn++; return reg; }
uint i915_emit_decl(struct i915_fp_compile *p, uint type, uint nr, uint d0_flags) { uint reg = UREG(type, nr); if (type == REG_TYPE_T) { if (p->decl_t & (1 << nr)) return reg; p->decl_t |= (1 << nr); } else if (type == REG_TYPE_S) { if (p->decl_s & (1 << nr)) return reg; p->decl_s |= (1 << nr); } else return reg; if (p->decl< p->declarations + I915_PROGRAM_SIZE) { *(p->decl++) = (D0_DCL | D0_DEST(reg) | d0_flags); *(p->decl++) = D1_MBZ; *(p->decl++) = D2_MBZ; } else i915_program_error(p, "Out of declarations"); p->nr_decl_insn++; return reg; }
GLuint i915_emit_arith(struct i915_fragment_program * p, GLuint op, GLuint dest, GLuint mask, GLuint saturate, GLuint src0, GLuint src1, GLuint src2) { GLuint c[3]; GLuint nr_const = 0; assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST); dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest)); assert(dest); if (GET_UREG_TYPE(src0) == REG_TYPE_CONST) c[nr_const++] = 0; if (GET_UREG_TYPE(src1) == REG_TYPE_CONST) c[nr_const++] = 1; if (GET_UREG_TYPE(src2) == REG_TYPE_CONST) c[nr_const++] = 2; /* Recursively call this function to MOV additional const values * into temporary registers. Use utemp registers for this - * currently shouldn't be possible to run out, but keep an eye on * this. */ if (nr_const > 1) { GLuint s[3], first, i, old_utemp_flag; s[0] = src0; s[1] = src1; s[2] = src2; old_utemp_flag = p->utemp_flag; first = GET_UREG_NR(s[c[0]]); for (i = 1; i < nr_const; i++) { if (GET_UREG_NR(s[c[i]]) != first) { GLuint tmp = i915_get_utemp(p); i915_emit_arith(p, A0_MOV, tmp, A0_DEST_CHANNEL_ALL, 0, s[c[i]], 0, 0); s[c[i]] = tmp; } } src0 = s[0]; src1 = s[1]; src2 = s[2]; p->utemp_flag = old_utemp_flag; /* restore */ } *(p->csr++) = (op | A0_DEST(dest) | mask | saturate | A0_SRC0(src0)); *(p->csr++) = (A1_SRC0(src0) | A1_SRC1(src1)); *(p->csr++) = (A2_SRC1(src1) | A2_SRC2(src2)); p->nr_alu_insn++; return dest; }
static GLuint get_dest( struct i915_fragment_program *p, int unit ) { if (p->ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) return i915_get_temp( p ); else if (unit != p->last_tex_stage) return i915_get_temp( p ); else return UREG(REG_TYPE_OC, 0); }
static GLuint get_free_rreg (struct i915_fragment_program *p, GLuint live_regs) { int bit = ffs(~live_regs); if (!bit) { i915_program_error(p, "Can't find free R reg"); return UREG_BAD; } return UREG(REG_TYPE_R, bit - 1); }
GLuint i915_emit_texld( struct i915_fragment_program *p, GLuint dest, GLuint destmask, GLuint sampler, GLuint coord, GLuint op ) { if (coord != UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord))) { /* No real way to work around this in the general case - need to * allocate and declare a new temporary register (a utemp won't * do). Will fallback for now. */ i915_program_error(p, "Can't (yet) swizzle TEX arguments"); return 0; } /* Don't worry about saturate as we only support */ if (destmask != A0_DEST_CHANNEL_ALL) { GLuint tmp = i915_get_utemp(p); i915_emit_texld( p, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, op ); i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 ); return dest; } else { assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST); assert(dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest))); if (GET_UREG_TYPE(coord) != REG_TYPE_T) { p->nr_tex_indirect++; } *(p->csr++) = (op | T0_DEST( dest ) | T0_SAMPLER( sampler )); *(p->csr++) = T1_ADDRESS_REG( coord ); *(p->csr++) = T2_MBZ; p->nr_tex_insn++; return dest; } }
/** * Get unpreserved temporary, a temp whose value is not preserved between * PS program phases. */ uint i915_get_utemp(struct i915_fp_compile * p) { int bit = ffs(~p->utemp_flag); if (!bit) { i915_program_error(p, "i915_get_utemp: out of temporaries"); return 0; } p->utemp_flag |= 1 << (bit - 1); return UREG(REG_TYPE_U, (bit - 1)); }
GLuint i915_get_utemp(struct i915_fragment_program * p) { int bit = ffs(~p->utemp_flag); if (!bit) { fprintf(stderr, "%s: out of temporaries\n", __FILE__); exit(1); } p->utemp_flag |= 1 << (bit - 1); return UREG(REG_TYPE_U, (bit - 1)); }
/* 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 fixup_depth_write(struct i915_fragment_program *p) { if (p->depth_written) { GLuint depth = UREG(REG_TYPE_OD, 0); i915_emit_arith(p, A0_MOV, depth, A0_DEST_CHANNEL_W, 0, swizzle(depth, X, Y, Z, Z), 0, 0); } }
static GLuint get_result_vector( struct i915_fragment_program *p, const struct fp_instruction *inst ) { switch (inst->DstReg.File) { case PROGRAM_OUTPUT: switch (inst->DstReg.Index) { case FRAG_OUTPUT_COLR: return UREG(REG_TYPE_OC, 0); case FRAG_OUTPUT_DEPR: p->depth_written = 1; return UREG(REG_TYPE_OD, 0); default: i915_program_error( p, "Bad inst->DstReg.Index" ); return 0; } case PROGRAM_TEMPORARY: return UREG(REG_TYPE_R, inst->DstReg.Index); default: i915_program_error( p, "Bad inst->DstReg.File" ); return 0; } }
/** * 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->info.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 */); } }
/** * Retrieve a ureg for the given source register. Will emit * constants, apply swizzling and negation as needed. */ static GLuint src_vector( const struct fp_src_register *source ) { GLuint src; assert(source->Index < 32); /* limitiation of UREG representation */ src = UREG( src_reg_file( source->File ), source->Index ); src = swizzle(src, _X + source->Swizzle[0], _X + source->Swizzle[1], _X + source->Swizzle[2], _X + source->Swizzle[3]); if (source->NegateBase) src = negate( src, 1,1,1,1 ); return src; }
static void emit_program_fini( struct i915_fragment_program *p ) { int cf = get_source( p, GL_PREVIOUS, 0 ); int out = UREG( REG_TYPE_OC, 0 ); if (p->ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) { /* Emit specular add. */ GLuint s = i915_emit_decl(p, REG_TYPE_T, T_SPECULAR, D0_CHANNEL_ALL); i915_emit_arith( p, A0_ADD, out, A0_DEST_CHANNEL_ALL, 0, cf, swizzle(s, X,Y,Z,ZERO), 0 ); } else if (cf != out) { /* Will wind up in here if no texture enabled or a couple of * other scenarios (GL_REPLACE for instance). */ i915_emit_arith( p, A0_MOV, out, A0_DEST_CHANNEL_ALL, 0, cf, 0, 0 ); } }
void i915_init_program(struct i915_context *i915, struct i915_fragment_program *p) { GLcontext *ctx = &i915->intel.ctx; TNLcontext *tnl = TNL_CONTEXT(ctx); p->translated = 0; p->params_uptodate = 0; p->on_hardware = 0; p->error = 0; p->nr_tex_indirect = 1; /* correct? */ p->nr_tex_insn = 0; p->nr_alu_insn = 0; p->nr_decl_insn = 0; p->ctx = ctx; memset(p->constant_flags, 0, sizeof(p->constant_flags)); p->nr_constants = 0; 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; p->depth_written = 0; p->nr_params = 0; p->src_texture = UREG_BAD; p->src_previous = UREG(REG_TYPE_T, T_DIFFUSE); p->last_tex_stage = 0; p->VB = &tnl->vb; *(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM; }
uint i915_emit_const2f(struct i915_fp_compile * p, float c0, float c1) { struct i915_fragment_shader *ifs = p->shader; unsigned reg, idx; if (c0 == 0.0) return swizzle(i915_emit_const1f(p, c1), ZERO, X, Z, W); if (c0 == 1.0) return swizzle(i915_emit_const1f(p, c1), ONE, X, Z, W); if (c1 == 0.0) return swizzle(i915_emit_const1f(p, c0), X, ZERO, Z, W); if (c1 == 1.0) return swizzle(i915_emit_const1f(p, c0), X, ONE, Z, W); // XXX emit swizzle here for 0, 1, -1 and any combination thereof // we can use swizzle + neg for that for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { if (ifs->constant_flags[reg] == 0xf || ifs->constant_flags[reg] == I915_CONSTFLAG_USER) continue; for (idx = 0; idx < 3; idx++) { if (!(ifs->constant_flags[reg] & (3 << idx))) { ifs->constants[reg][idx + 0] = c0; ifs->constants[reg][idx + 1] = c1; ifs->constant_flags[reg] |= 3 << idx; if (reg + 1 > ifs->num_constants) ifs->num_constants = reg + 1; return swizzle(UREG(REG_TYPE_CONST, reg), idx, idx + 1, ZERO, ONE); } } } i915_program_error(p, "i915_emit_const2f: out of constants"); return 0; }
GLuint i915_emit_const2f(struct i915_fragment_program * p, GLfloat c0, GLfloat c1) { GLint reg, idx; if (c0 == 0.0) return swizzle(i915_emit_const1f(p, c1), ZERO, X, Z, W); if (c0 == 1.0) return swizzle(i915_emit_const1f(p, c1), ONE, X, Z, W); if (c1 == 0.0) return swizzle(i915_emit_const1f(p, c0), X, ZERO, Z, W); if (c1 == 1.0) return swizzle(i915_emit_const1f(p, c0), X, ONE, Z, W); for (reg = 0; reg < I915_MAX_CONSTANT; reg++) { if (p->constant_flags[reg] == 0xf || p->constant_flags[reg] == I915_CONSTFLAG_PARAM) continue; for (idx = 0; idx < 3; idx++) { if (!(p->constant_flags[reg] & (3 << idx))) { p->constant[reg][idx] = c0; p->constant[reg][idx + 1] = c1; p->constant_flags[reg] |= 3 << idx; if (reg + 1 > p->nr_constants) p->nr_constants = reg + 1; return swizzle(UREG(REG_TYPE_CONST, reg), idx, idx + 1, ZERO, ONE); } } } fprintf(stderr, "%s: out of constants\n", __func__); p->error = 1; return 0; }
/** * 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 i915_full_src_register *source, struct i915_fragment_shader *fs) { uint index = source->Register.Index; uint src = 0, sem_name, sem_ind; switch (source->Register.File) { case TGSI_FILE_TEMPORARY: if (source->Register.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. */ sem_name = p->shader->info.input_semantic_name[index]; sem_ind = p->shader->info.input_semantic_index[index]; switch (sem_name) { case TGSI_SEMANTIC_POSITION: { /* for fragcoord */ int real_tex_unit = get_mapping(fs, I915_SEMANTIC_POS); src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + real_tex_unit, 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: { int real_tex_unit = get_mapping(fs, sem_ind); src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + real_tex_unit, D0_CHANNEL_ALL); break; } case TGSI_SEMANTIC_FACE: { /* for back/front faces */ int real_tex_unit = get_mapping(fs, I915_SEMANTIC_FACE); src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + real_tex_unit, D0_CHANNEL_X); break; } default: i915_program_error(p, "Bad source->Index"); return 0; } break; case TGSI_FILE_IMMEDIATE: assert(index < p->num_immediates); index = p->immediates_map[index]; /* fall-through */ case TGSI_FILE_CONSTANT: src = UREG(REG_TYPE_CONST, index); break; default: i915_program_error(p, "Bad source->File"); return 0; } src = swizzle(src, source->Register.SwizzleX, source->Register.SwizzleY, source->Register.SwizzleZ, source->Register.SwizzleW); /* There's both negate-all-components and per-component negation. * Try to handle both here. */ { int n = source->Register.Negate; src = negate(src, n, n, n, n); } /* no abs() */ #if 0 /* XXX assertions disabled to allow arbfplight.c to run */ /* XXX enable these assertions, or fix things */ assert(!source->Register.Absolute); #endif if (source->Register.Absolute) debug_printf("Unhandled absolute value\n"); return src; }
/** * Emit a texture load or texkill instruction. * \param dest the dest i915 register * \param destmask the dest register writemask * \param sampler the i915 sampler register * \param coord the i915 source texcoord operand * \param opcode the instruction opcode */ uint i915_emit_texld( struct i915_fp_compile *p, uint dest, uint destmask, uint sampler, uint coord, uint opcode, uint num_coord ) { const uint k = UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord)); int temp = -1; uint ignore = 0; /* Eliminate the useless texture coordinates. Otherwise we end up generating * a swizzle for no reason below. */ switch(num_coord) { case 0: /* Ignore x */ ignore |= (0xf << UREG_CHANNEL_X_SHIFT); case 1: /* Ignore y */ ignore |= (0xf << UREG_CHANNEL_Y_SHIFT); case 2: /* Ignore z */ ignore |= (0xf << UREG_CHANNEL_Z_SHIFT); case 3: /* Ignore w */ ignore |= (0xf << UREG_CHANNEL_W_SHIFT); } if ( (coord &~ignore ) != (k & ~ignore) ) { /* texcoord is swizzled or negated. Need to allocate a new temporary * register (a utemp / unpreserved temp) won't do. */ uint tempReg; temp = i915_get_temp(p); /* get temp reg index */ tempReg = UREG(REG_TYPE_R, temp); /* make i915 register */ i915_emit_arith( p, A0_MOV, tempReg, A0_DEST_CHANNEL_ALL, /* dest reg, writemask */ 0, /* saturate */ coord, 0, 0 ); /* src0, src1, src2 */ /* new src texcoord is tempReg */ coord = tempReg; } /* Don't worry about saturate as we only support */ if (destmask != A0_DEST_CHANNEL_ALL) { /* if not writing to XYZW... */ uint tmp = i915_get_utemp(p); i915_emit_texld( p, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, opcode, num_coord ); i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 ); /* XXX release utemp here? */ } else { assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST); assert(dest == UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest))); /* Output register being oC or oD defines a phase boundary */ if (GET_UREG_TYPE(dest) == REG_TYPE_OC || GET_UREG_TYPE(dest) == REG_TYPE_OD) p->nr_tex_indirect++; /* Reading from an r# register whose contents depend on output of the * current phase defines a phase boundary. */ if (GET_UREG_TYPE(coord) == REG_TYPE_R && p->register_phases[GET_UREG_NR(coord)] == p->nr_tex_indirect) p->nr_tex_indirect++; if (p->csr< p->program + I915_PROGRAM_SIZE) { *(p->csr++) = (opcode | T0_DEST( dest ) | T0_SAMPLER( sampler )); *(p->csr++) = T1_ADDRESS_REG( coord ); *(p->csr++) = T2_MBZ; } else i915_program_error(p, "Out of instructions"); if (GET_UREG_TYPE(dest) == REG_TYPE_R) p->register_phases[GET_UREG_NR(dest)] = p->nr_tex_indirect; p->nr_tex_insn++; } if (temp >= 0) i915_release_temp(p, temp); return dest; }
/** * Retrieve a ureg for the given source register. Will emit * constants, apply swizzling and negation as needed. */ static GLuint src_vector(struct i915_fragment_program *p, const struct prog_src_register *source, const struct gl_fragment_program *program) { GLuint src; switch (source->File) { /* Registers: */ case PROGRAM_TEMPORARY: if (source->Index >= I915_MAX_TEMPORARY) { i915_program_error(p, "Exceeded max temporary reg"); return 0; } src = UREG(REG_TYPE_R, source->Index); break; case PROGRAM_INPUT: switch (source->Index) { case FRAG_ATTRIB_WPOS: src = i915_emit_decl(p, REG_TYPE_T, p->wpos_tex, D0_CHANNEL_ALL); break; case FRAG_ATTRIB_COL0: src = i915_emit_decl(p, REG_TYPE_T, T_DIFFUSE, D0_CHANNEL_ALL); break; case FRAG_ATTRIB_COL1: src = i915_emit_decl(p, REG_TYPE_T, T_SPECULAR, D0_CHANNEL_XYZ); src = swizzle(src, X, Y, Z, ONE); break; case FRAG_ATTRIB_FOGC: src = i915_emit_decl(p, REG_TYPE_T, T_FOG_W, D0_CHANNEL_W); src = swizzle(src, W, ZERO, ZERO, ONE); break; case FRAG_ATTRIB_TEX0: case FRAG_ATTRIB_TEX1: case FRAG_ATTRIB_TEX2: case FRAG_ATTRIB_TEX3: case FRAG_ATTRIB_TEX4: case FRAG_ATTRIB_TEX5: case FRAG_ATTRIB_TEX6: case FRAG_ATTRIB_TEX7: src = i915_emit_decl(p, REG_TYPE_T, T_TEX0 + (source->Index - FRAG_ATTRIB_TEX0), D0_CHANNEL_ALL); break; default: i915_program_error(p, "Bad source->Index"); return 0; } break; /* Various paramters and env values. All emitted to * hardware as program constants. */ case PROGRAM_LOCAL_PARAM: src = i915_emit_param4fv(p, program->Base.LocalParams[source->Index]); break; case PROGRAM_ENV_PARAM: src = i915_emit_param4fv(p, p->ctx->FragmentProgram.Parameters[source-> Index]); break; case PROGRAM_CONSTANT: case PROGRAM_STATE_VAR: case PROGRAM_NAMED_PARAM: src = i915_emit_param4fv(p, program->Base.Parameters->ParameterValues[source-> Index]); break; default: i915_program_error(p, "Bad source->File"); return 0; } src = swizzle(src, GET_SWZ(source->Swizzle, 0), GET_SWZ(source->Swizzle, 1), GET_SWZ(source->Swizzle, 2), GET_SWZ(source->Swizzle, 3)); if (source->NegateBase) src = negate(src, GET_BIT(source->NegateBase, 0), GET_BIT(source->NegateBase, 1), GET_BIT(source->NegateBase, 2), GET_BIT(source->NegateBase, 3)); return src; }
/* 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. * * Parse failures -- Mesa doesn't currently give a good indication * internally whether a particular program string parsed or not. This * can lead to confusion -- hopefully we cope with it ok now. * */ static void upload_program(struct i915_fragment_program *p) { const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current; const struct prog_instruction *inst = program->Base.Instructions; /* _mesa_debug_fp_inst(program->Base.NumInstructions, inst); */ /* Is this a parse-failed program? Ensure a valid program is * loaded, as the flagging of an error isn't sufficient to stop * this being uploaded to hardware. */ if (inst[0].Opcode == OPCODE_END) { GLuint tmp = i915_get_utemp(p); i915_emit_arith(p, A0_MOV, UREG(REG_TYPE_OC, 0), A0_DEST_CHANNEL_ALL, 0, swizzle(tmp, ONE, ZERO, ONE, ONE), 0, 0); return; } if (program->Base.NumInstructions > I915_MAX_INSN) { i915_program_error( p, "Exceeded max instructions" ); return; } /* Not always needed: */ calc_live_regs(p); while (1) { GLuint src0, src1, src2, flags; GLuint tmp = 0, consts0 = 0, consts1 = 0; switch (inst->Opcode) { case OPCODE_ABS: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_MAX, get_result_vector(p, inst), get_result_flags(inst), 0, src0, negate(src0, 1, 1, 1, 1), 0); break; case OPCODE_ADD: EMIT_2ARG_ARITH(A0_ADD); break; case OPCODE_CMP: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); src2 = src_vector(p, &inst->SrcReg[2], program); i915_emit_arith(p, A0_CMP, get_result_vector(p, inst), get_result_flags(inst), 0, src0, src2, src1); /* NOTE: order of src2, src1 */ break; case OPCODE_COS: src0 = src_vector(p, &inst->SrcReg[0], program); tmp = i915_get_utemp(p); consts0 = i915_emit_const4fv(p, sin_quad_constants[0]); consts1 = i915_emit_const4fv(p, sin_quad_constants[1]); /* Reduce range from repeating about [-pi,pi] to [-1,1] */ i915_emit_arith(p, A0_MAD, tmp, A0_DEST_CHANNEL_X, 0, src0, swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */ swizzle(consts0, W, ZERO, ZERO, ZERO)); /* .75 */ i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0); i915_emit_arith(p, A0_MAD, tmp, A0_DEST_CHANNEL_X, 0, tmp, swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */ swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */ /* Compute COS with the same calculation used for SIN, but a * different source range has been mapped to [-1,1] this time. */ /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */ i915_emit_arith(p, A0_MAX, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), 0); /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */ i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), tmp, 0); /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */ i915_emit_arith(p, A0_DP3, tmp, A0_DEST_CHANNEL_X, 0, tmp, swizzle(consts1, X, Y, ZERO, ZERO), 0); /* tmp.x now contains a first approximation (y). Now, weight it * against tmp.y**2 to get closer. */ i915_emit_arith(p, A0_MAX, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), 0); /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */ i915_emit_arith(p, A0_MAD, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), swizzle(tmp, ZERO, Y, ZERO, ZERO), negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0)); /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */ i915_emit_arith(p, A0_MAD, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(consts1, W, W, W, W), swizzle(tmp, Y, Y, Y, Y), swizzle(tmp, X, X, X, X)); break; case OPCODE_DP3: EMIT_2ARG_ARITH(A0_DP3); break; case OPCODE_DP4: EMIT_2ARG_ARITH(A0_DP4); break; case OPCODE_DPH: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); i915_emit_arith(p, A0_DP4, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, Y, Z, ONE), src1, 0); break; case OPCODE_DST: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); /* 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), get_result_flags(inst), 0, swizzle(src0, ONE, Y, Z, ONE), swizzle(src1, ONE, Y, ONE, W), 0); break; case OPCODE_EX2: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_EXP, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_FLR: EMIT_1ARG_ARITH(A0_FLR); break; case OPCODE_FRC: EMIT_1ARG_ARITH(A0_FRC); break; case OPCODE_KIL: src0 = src_vector(p, &inst->SrcReg[0], program); tmp = i915_get_utemp(p); i915_emit_texld(p, get_live_regs(p, inst), tmp, A0_DEST_CHANNEL_ALL, /* use a dummy dest reg */ 0, src0, T0_TEXKILL); break; case OPCODE_LG2: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_LOG, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_LIT: src0 = src_vector(p, &inst->SrcReg[0], program); 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), 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 OPCODE_LRP: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); src2 = src_vector(p, &inst->SrcReg[2], program); 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), flags, 0, negate(src2, 1, 1, 1, 1), src0, tmp); break; case OPCODE_MAD: EMIT_3ARG_ARITH(A0_MAD); break; case OPCODE_MAX: EMIT_2ARG_ARITH(A0_MAX); break; case OPCODE_MIN: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); 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), flags, 0, negate(tmp, 1, 1, 1, 1), 0, 0); break; case OPCODE_MOV: EMIT_1ARG_ARITH(A0_MOV); break; case OPCODE_MUL: EMIT_2ARG_ARITH(A0_MUL); break; case OPCODE_POW: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); 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), flags, 0, swizzle(tmp, X, X, X, X), 0, 0); break; case OPCODE_RCP: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_RCP, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_RSQ: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_RSQ, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_SCS: src0 = src_vector(p, &inst->SrcReg[0], program); 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); if (inst->DstReg.WriteMask & WRITEMASK_Y) { GLuint tmp1; if (inst->DstReg.WriteMask & 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), A0_DEST_CHANNEL_Y, 0, swizzle(tmp1, W, Z, Y, X), i915_emit_const4fv(p, sin_constants), 0); } if (inst->DstReg.WriteMask & 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), A0_DEST_CHANNEL_X, 0, swizzle(tmp, ONE, Z, Y, X), i915_emit_const4fv(p, cos_constants), 0); } break; case OPCODE_SGE: EMIT_2ARG_ARITH(A0_SGE); break; case OPCODE_SIN: src0 = src_vector(p, &inst->SrcReg[0], program); tmp = i915_get_utemp(p); consts0 = i915_emit_const4fv(p, sin_quad_constants[0]); consts1 = i915_emit_const4fv(p, sin_quad_constants[1]); /* Reduce range from repeating about [-pi,pi] to [-1,1] */ i915_emit_arith(p, A0_MAD, tmp, A0_DEST_CHANNEL_X, 0, src0, swizzle(consts1, Z, ZERO, ZERO, ZERO), /* 1/(2pi) */ swizzle(consts0, Z, ZERO, ZERO, ZERO)); /* .5 */ i915_emit_arith(p, A0_FRC, tmp, A0_DEST_CHANNEL_X, 0, tmp, 0, 0); i915_emit_arith(p, A0_MAD, tmp, A0_DEST_CHANNEL_X, 0, tmp, swizzle(consts0, X, ZERO, ZERO, ZERO), /* 2 */ swizzle(consts0, Y, ZERO, ZERO, ZERO)); /* -1 */ /* Compute sin using a quadratic and quartic. It gives continuity * that repeating the Taylor series lacks every 2*pi, and has * reduced error. * * The idea was described at: * http://www.devmaster.net/forums/showthread.php?t=5784 */ /* tmp.y = abs(tmp.x); {x, abs(x), 0, 0} */ i915_emit_arith(p, A0_MAX, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), 0); /* tmp.y = tmp.y * tmp.x; {x, x * abs(x), 0, 0} */ i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), tmp, 0); /* tmp.x = tmp.xy DP sin_quad_constants[2].xy */ i915_emit_arith(p, A0_DP3, tmp, A0_DEST_CHANNEL_X, 0, tmp, swizzle(consts1, X, Y, ZERO, ZERO), 0); /* tmp.x now contains a first approximation (y). Now, weight it * against tmp.y**2 to get closer. */ i915_emit_arith(p, A0_MAX, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0), 0); /* tmp.y = tmp.x * tmp.y - tmp.x; {y, y * abs(y) - y, 0, 0} */ i915_emit_arith(p, A0_MAD, tmp, A0_DEST_CHANNEL_Y, 0, swizzle(tmp, ZERO, X, ZERO, ZERO), swizzle(tmp, ZERO, Y, ZERO, ZERO), negate(swizzle(tmp, ZERO, X, ZERO, ZERO), 0, 1, 0, 0)); /* result = .2225 * tmp.y + tmp.x =.2225(y * abs(y) - y) + y= */ i915_emit_arith(p, A0_MAD, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(consts1, W, W, W, W), swizzle(tmp, Y, Y, Y, Y), swizzle(tmp, X, X, X, X)); break; case OPCODE_SLT: EMIT_2ARG_ARITH(A0_SLT); break; case OPCODE_SUB: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); i915_emit_arith(p, A0_ADD, get_result_vector(p, inst), get_result_flags(inst), 0, src0, negate(src1, 1, 1, 1, 1), 0); break; case OPCODE_SWZ: EMIT_1ARG_ARITH(A0_MOV); /* extended swizzle handled natively */ break; case OPCODE_TEX: EMIT_TEX(T0_TEXLD); break; case OPCODE_TXB: EMIT_TEX(T0_TEXLDB); break; case OPCODE_TXP: EMIT_TEX(T0_TEXLDP); break; case 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->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); 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), get_result_flags(inst), 0, swizzle(src0, Y, Z, X, ONE), swizzle(src1, Z, X, Y, ONE), negate(tmp, 1, 1, 1, 0)); break; case OPCODE_END: return; default: i915_program_error(p, "bad opcode"); return; } inst++; i915_release_utemps(p); } }
/* 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. * * Parse failures -- Mesa doesn't currently give a good indication * internally whether a particular program string parsed or not. This * can lead to confusion -- hopefully we cope with it ok now. * */ static void upload_program(struct i915_fragment_program *p) { const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current; const struct prog_instruction *inst = program->Base.Instructions; /* _mesa_debug_fp_inst(program->Base.NumInstructions, inst); */ /* Is this a parse-failed program? Ensure a valid program is * loaded, as the flagging of an error isn't sufficient to stop * this being uploaded to hardware. */ if (inst[0].Opcode == OPCODE_END) { GLuint tmp = i915_get_utemp(p); i915_emit_arith(p, A0_MOV, UREG(REG_TYPE_OC, 0), A0_DEST_CHANNEL_ALL, 0, swizzle(tmp, ONE, ZERO, ONE, ONE), 0, 0); return; } while (1) { GLuint src0, src1, src2, flags; GLuint tmp = 0; switch (inst->Opcode) { case OPCODE_ABS: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_MAX, get_result_vector(p, inst), get_result_flags(inst), 0, src0, negate(src0, 1, 1, 1, 1), 0); break; case OPCODE_ADD: EMIT_2ARG_ARITH(A0_ADD); break; case OPCODE_CMP: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); src2 = src_vector(p, &inst->SrcReg[2], program); i915_emit_arith(p, A0_CMP, get_result_vector(p, inst), get_result_flags(inst), 0, src0, src2, src1); /* NOTE: order of src2, src1 */ break; case OPCODE_COS: src0 = src_vector(p, &inst->SrcReg[0], program); tmp = i915_get_utemp(p); i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_X, 0, src0, i915_emit_const1f(p, 1.0 / (M_PI)), 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, (M_PI)), 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), get_result_flags(inst), 0, swizzle(tmp, ONE, Z, Y, X), i915_emit_const4fv(p, cos_constants), 0); break; case OPCODE_DP3: EMIT_2ARG_ARITH(A0_DP3); break; case OPCODE_DP4: EMIT_2ARG_ARITH(A0_DP4); break; case OPCODE_DPH: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); i915_emit_arith(p, A0_DP4, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, Y, Z, ONE), src1, 0); break; case OPCODE_DST: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); /* 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), get_result_flags(inst), 0, swizzle(src0, ONE, Y, Z, ONE), swizzle(src1, ONE, Y, ONE, W), 0); break; case OPCODE_EX2: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_EXP, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_FLR: EMIT_1ARG_ARITH(A0_FLR); break; case OPCODE_FRC: EMIT_1ARG_ARITH(A0_FRC); break; case OPCODE_KIL: src0 = src_vector(p, &inst->SrcReg[0], program); 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 OPCODE_LG2: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_LOG, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_LIT: src0 = src_vector(p, &inst->SrcReg[0], program); 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), 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 OPCODE_LRP: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); src2 = src_vector(p, &inst->SrcReg[2], program); 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), flags, 0, negate(src2, 1, 1, 1, 1), src0, tmp); break; case OPCODE_MAD: EMIT_3ARG_ARITH(A0_MAD); break; case OPCODE_MAX: EMIT_2ARG_ARITH(A0_MAX); break; case OPCODE_MIN: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); 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), flags, 0, negate(tmp, 1, 1, 1, 1), 0, 0); break; case OPCODE_MOV: EMIT_1ARG_ARITH(A0_MOV); break; case OPCODE_MUL: EMIT_2ARG_ARITH(A0_MUL); break; case OPCODE_POW: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); 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), flags, 0, swizzle(tmp, X, X, X, X), 0, 0); break; case OPCODE_RCP: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_RCP, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_RSQ: src0 = src_vector(p, &inst->SrcReg[0], program); i915_emit_arith(p, A0_RSQ, get_result_vector(p, inst), get_result_flags(inst), 0, swizzle(src0, X, X, X, X), 0, 0); break; case OPCODE_SCS: src0 = src_vector(p, &inst->SrcReg[0], program); 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); if (inst->DstReg.WriteMask & WRITEMASK_Y) { GLuint tmp1; if (inst->DstReg.WriteMask & 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), A0_DEST_CHANNEL_Y, 0, swizzle(tmp1, W, Z, Y, X), i915_emit_const4fv(p, sin_constants), 0); } if (inst->DstReg.WriteMask & 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), A0_DEST_CHANNEL_X, 0, swizzle(tmp, ONE, Z, Y, X), i915_emit_const4fv(p, cos_constants), 0); } break; case OPCODE_SGE: EMIT_2ARG_ARITH(A0_SGE); break; case OPCODE_SIN: src0 = src_vector(p, &inst->SrcReg[0], program); tmp = i915_get_utemp(p); i915_emit_arith(p, A0_MUL, tmp, A0_DEST_CHANNEL_X, 0, src0, i915_emit_const1f(p, 1.0 / (M_PI)), 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, (M_PI)), 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), get_result_flags(inst), 0, swizzle(tmp, W, Z, Y, X), i915_emit_const4fv(p, sin_constants), 0); break; case OPCODE_SLT: EMIT_2ARG_ARITH(A0_SLT); break; case OPCODE_SUB: src0 = src_vector(p, &inst->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); i915_emit_arith(p, A0_ADD, get_result_vector(p, inst), get_result_flags(inst), 0, src0, negate(src1, 1, 1, 1, 1), 0); break; case OPCODE_SWZ: EMIT_1ARG_ARITH(A0_MOV); /* extended swizzle handled natively */ break; case OPCODE_TEX: EMIT_TEX(T0_TEXLD); break; case OPCODE_TXB: EMIT_TEX(T0_TEXLDB); break; case OPCODE_TXP: EMIT_TEX(T0_TEXLDP); break; case 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->SrcReg[0], program); src1 = src_vector(p, &inst->SrcReg[1], program); 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), get_result_flags(inst), 0, swizzle(src0, Y, Z, X, ONE), swizzle(src1, Z, X, Y, ONE), negate(tmp, 1, 1, 1, 0)); break; case OPCODE_END: return; default: i915_program_error(p, "bad opcode"); return; } inst++; i915_release_utemps(p); } }
GLuint i915_emit_texld( struct i915_fragment_program *p, GLuint live_regs, GLuint dest, GLuint destmask, GLuint sampler, GLuint coord, GLuint op ) { if (coord != UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord))) { /* With the help of the "needed registers" table created earlier, pick * a register we can MOV the swizzled TC to (since TEX doesn't support * swizzled sources) */ GLuint swizCoord = get_free_rreg(p, live_regs); if (swizCoord == UREG_BAD) return 0; i915_emit_arith( p, A0_MOV, swizCoord, A0_DEST_CHANNEL_ALL, 0, coord, 0, 0 ); coord = swizCoord; } /* Don't worry about saturate as we only support texture formats * that are always in the 0..1 range. */ if (destmask != A0_DEST_CHANNEL_ALL) { GLuint tmp = i915_get_utemp(p); i915_emit_texld( p, 0, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, op ); i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 ); return dest; } else { assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST); assert(dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest))); /* Can't use unsaved temps for coords, as the phase boundary would result * in the contents becoming undefined. */ assert(GET_UREG_TYPE(coord) != REG_TYPE_U); if ((GET_UREG_TYPE(coord) != REG_TYPE_R) && (GET_UREG_TYPE(coord) != REG_TYPE_OC) && (GET_UREG_TYPE(coord) != REG_TYPE_OD) && (GET_UREG_TYPE(coord) != REG_TYPE_T)) { GLuint tmpCoord = get_free_rreg(p, live_regs); if (tmpCoord == UREG_BAD) return 0; i915_emit_arith(p, A0_MOV, tmpCoord, A0_DEST_CHANNEL_ALL, 0, coord, 0, 0); coord = tmpCoord; } /* Output register being oC or oD defines a phase boundary */ if (GET_UREG_TYPE(dest) == REG_TYPE_OC || GET_UREG_TYPE(dest) == REG_TYPE_OD) p->nr_tex_indirect++; /* Reading from an r# register whose contents depend on output of the * current phase defines a phase boundary. */ if (GET_UREG_TYPE(coord) == REG_TYPE_R && p->register_phases[GET_UREG_NR(coord)] == p->nr_tex_indirect) p->nr_tex_indirect++; *(p->csr++) = (op | T0_DEST( dest ) | T0_SAMPLER( sampler )); *(p->csr++) = T1_ADDRESS_REG( coord ); *(p->csr++) = T2_MBZ; if (GET_UREG_TYPE(dest) == REG_TYPE_R) p->register_phases[GET_UREG_NR(dest)] = p->nr_tex_indirect; p->nr_tex_insn++; return dest; } }
static INLINE int is_swizzled( int reg ) { return ((reg & UREG_XYZW_CHANNEL_MASK) != (UREG(0,0) & UREG_XYZW_CHANNEL_MASK)); }