From: Kenneth Graunke Date: Mon, 8 Oct 2012 17:21:30 +0000 (-0700) Subject: i965/vs: Replace brw_vs_emit.c with dumping code into the vec4_visitor. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=66c8473e028d416a87783da45de34454e4e9f6b8;p=mesa.git i965/vs: Replace brw_vs_emit.c with dumping code into the vec4_visitor. Rather than having two separate backends, just create a small layer that translates the subset of Mesa IR used for ARB_vertex_program and fixed function programs to the Vec4 IR. This allows us to use the same optimization passes, code generator, register allocator as for GLSL. v2: Incorporate Eric's review comments. - Fix use of uninitialized src_swiz[] values in the SWIZZLE_ZERO/ONE case: just initialize it to 0 (.x) since the value doesn't matter (those channels get writemasked out anyway). - Properly reswizzle source register's swizzles, rather than overwriting the swizzle. - Port the old brw_vs_emit code for computing .x of the EXP2 opcode. - Update comments, removing mention of NV_vertex_program, etc. - Delete remaining #warning lines and debug comments. Signed-off-by: Kenneth Graunke Reviewed-by: Eric Anholt --- diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources index c0a42124641..dc65908a8d4 100644 --- a/src/mesa/drivers/dri/i965/Makefile.sources +++ b/src/mesa/drivers/dri/i965/Makefile.sources @@ -128,6 +128,7 @@ i965_CXX_FILES = \ brw_vec4_live_variables.cpp \ brw_vec4_reg_allocate.cpp \ brw_vec4_visitor.cpp \ + brw_vec4_vp.cpp \ gen6_blorp.cpp \ gen7_blorp.cpp diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h b/src/mesa/drivers/dri/i965/brw_vec4.h index e4dcbc43309..1029e6d3ce4 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4.h +++ b/src/mesa/drivers/dri/i965/brw_vec4.h @@ -188,7 +188,7 @@ public: /** @{ * Annotation for the generated IR. One of the two can be set. */ - ir_instruction *ir; + const void *ir; const char *annotation; bool is_tex(); @@ -223,7 +223,7 @@ public: * GLSL IR currently being processed, which is associated with our * driver IR instructions for debugging purposes. */ - ir_instruction *base_ir; + const void *base_ir; const char *current_annotation; int *virtual_grf_sizes; @@ -235,6 +235,9 @@ public: int *virtual_grf_use; dst_reg userplane[MAX_CLIP_PLANES]; + src_reg *vp_temp_regs; + src_reg vp_addr_reg; + /** * This is the size to be used for an array with an element per * reg_offset @@ -249,6 +252,8 @@ public: void reladdr_to_temp(ir_instruction *ir, src_reg *reg, int *num_reladdr); + bool need_all_constants_in_pull_buffer; + src_reg src_reg_for_float(float val); /** @@ -369,6 +374,13 @@ public: /** Walks an exec_list of ir_instruction and sends it through this visitor. */ void visit_instructions(const exec_list *list); + void setup_vp_regs(); + void emit_vertex_program_code(); + void emit_vp_sop(uint32_t condmod, dst_reg dst, + src_reg src0, src_reg src1, src_reg one); + dst_reg get_vp_dst_reg(const prog_dst_register &dst); + src_reg get_vp_src_reg(const prog_src_register &src); + void emit_bool_to_cond_code(ir_rvalue *ir, uint32_t *predicate); void emit_bool_comparison(unsigned int op, dst_reg dst, src_reg src0, src_reg src1); void emit_if_gen6(ir_if *ir); diff --git a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp index fdb42698fdc..1567765173b 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_emit.cpp @@ -26,6 +26,8 @@ extern "C" { #include "brw_eu.h" #include "main/macros.h" +#include "program/prog_print.h" +#include "program/prog_parameter.h" }; using namespace brw; @@ -774,13 +776,17 @@ vec4_visitor::generate_vs_instruction(vec4_instruction *instruction, bool vec4_visitor::run() { - if (c->key.userclip_active && !c->key.uses_clip_distance) - setup_uniform_clipplane_values(); - /* Generate VS IR for main(). (the visitor only descends into * functions called "main"). */ - visit_instructions(shader->ir); + if (shader) { + visit_instructions(shader->ir); + } else { + emit_vertex_program_code(); + } + + if (c->key.userclip_active && !c->key.uses_clip_distance) + setup_uniform_clipplane_values(); emit_urb_writes(); @@ -790,8 +796,18 @@ vec4_visitor::run() * that we have reladdr computations available for CSE, since we'll * often do repeated subexpressions for those. */ - move_grf_array_access_to_scratch(); - move_uniform_array_access_to_pull_constants(); + if (shader) { + move_grf_array_access_to_scratch(); + move_uniform_array_access_to_pull_constants(); + } else { + /* The ARB_vertex_program frontend emits pull constant loads directly + * rather than using reladdr, so we don't need to walk through all the + * instructions looking for things to move. There isn't anything. + * + * We do still need to split things to vec4 size. + */ + split_uniform_registers(); + } pack_uniform_registers(); move_push_constants_to_pull_constants(); split_virtual_grfs(); @@ -844,10 +860,14 @@ vec4_visitor::generate_code() { int last_native_insn_offset = 0; const char *last_annotation_string = NULL; - ir_instruction *last_annotation_ir = NULL; + const void *last_annotation_ir = NULL; if (unlikely(INTEL_DEBUG & DEBUG_VS)) { - printf("Native code for vertex shader %d:\n", prog->Name); + if (shader) { + printf("Native code for vertex shader %d:\n", prog->Name); + } else { + printf("Native code for vertex program %d:\n", c->vp->program.Base.Id); + } } foreach_list(node, &this->instructions) { @@ -859,7 +879,15 @@ vec4_visitor::generate_code() last_annotation_ir = inst->ir; if (last_annotation_ir) { printf(" "); - last_annotation_ir->print(); + if (shader) { + ((ir_instruction *) last_annotation_ir)->print(); + } else { + const prog_instruction *vpi; + vpi = (const prog_instruction *) inst->ir; + printf("%d: ", (int)(vpi - vp->Base.Instructions)); + _mesa_fprint_instruction_opt(stdout, vpi, 0, + PROG_PRINT_DEBUG, NULL); + } printf("\n"); } } @@ -1032,24 +1060,26 @@ brw_vs_emit(struct gl_shader_program *prog, struct brw_vs_compile *c) bool start_busy = false; float start_time = 0; - if (!prog) - return false; - if (unlikely(INTEL_DEBUG & DEBUG_PERF)) { start_busy = (intel->batch.last_bo && drm_intel_bo_busy(intel->batch.last_bo)); start_time = get_time(); } - struct brw_shader *shader = - (brw_shader *) prog->_LinkedShaders[MESA_SHADER_VERTEX]; - if (!shader) - return false; + struct brw_shader *shader = NULL; + if (prog) + shader = (brw_shader *) prog->_LinkedShaders[MESA_SHADER_VERTEX]; if (unlikely(INTEL_DEBUG & DEBUG_VS)) { - printf("GLSL IR for native vertex shader %d:\n", prog->Name); - _mesa_print_ir(shader->ir, NULL); - printf("\n\n"); + if (shader) { + printf("GLSL IR for native vertex shader %d:\n", prog->Name); + _mesa_print_ir(shader->ir, NULL); + printf("\n\n"); + } else { + printf("ARB_vertex_program %d for native vertex shader\n", + c->vp->program.Base.Id); + _mesa_print_program(&c->vp->program.Base); + } } if (unlikely(INTEL_DEBUG & DEBUG_PERF) && shader) { diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp index 713427b66da..f7e96e5efc6 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp @@ -2701,8 +2701,7 @@ vec4_visitor::vec4_visitor(struct brw_vs_compile *c, this->current_annotation = NULL; this->c = c; - this->vp = (struct gl_vertex_program *) - prog->_LinkedShaders[MESA_SHADER_VERTEX]->Program; + this->vp = &c->vp->program; this->prog_data = &c->prog_data; this->variable_ht = hash_table_ctor(0, diff --git a/src/mesa/drivers/dri/i965/brw_vec4_vp.cpp b/src/mesa/drivers/dri/i965/brw_vec4_vp.cpp new file mode 100644 index 00000000000..75799af0bbe --- /dev/null +++ b/src/mesa/drivers/dri/i965/brw_vec4_vp.cpp @@ -0,0 +1,667 @@ +/* + * Copyright © 2012 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +/** @file brw_vec4_vp.cpp + * + * A translator from Mesa IR to the i965 driver's Vec4 IR, used to implement + * ARB_vertex_program and fixed-function vertex processing. + */ + +#include "brw_context.h" +#include "brw_vec4.h" +extern "C" { +#include "program/prog_parameter.h" +#include "program/prog_print.h" +} +using namespace brw; + +void +vec4_visitor::emit_vp_sop(uint32_t conditional_mod, + dst_reg dst, src_reg src0, src_reg src1, + src_reg one) +{ + vec4_instruction *inst; + + inst = emit(BRW_OPCODE_CMP, dst_null_d(), src0, src1); + inst->conditional_mod = conditional_mod; + + inst = emit(BRW_OPCODE_SEL, dst, one, src_reg(0.0f)); + inst->predicate = BRW_PREDICATE_NORMAL; +} + +/** + * Reswizzle a given source register. + * \sa brw_swizzle(). + */ +static inline src_reg +reswizzle(src_reg orig, unsigned x, unsigned y, unsigned z, unsigned w) +{ + src_reg t = orig; + t.swizzle = BRW_SWIZZLE4(BRW_GET_SWZ(orig.swizzle, x), + BRW_GET_SWZ(orig.swizzle, y), + BRW_GET_SWZ(orig.swizzle, z), + BRW_GET_SWZ(orig.swizzle, w)); + return t; +} + +void +vec4_visitor::emit_vertex_program_code() +{ + this->need_all_constants_in_pull_buffer = false; + + setup_vp_regs(); + + /* Keep a reg with 1.0 around, for reuse by emit_vs_sop so that it can just + * be: + * + * sel.f0 dst 1.0 0.0 + * + * instead of + * + * mov dst 0.0 + * mov.f0 dst 1.0 + */ + src_reg one = src_reg(this, glsl_type::float_type); + emit(MOV(dst_reg(one), src_reg(1.0f))); + + for (unsigned int insn = 0; insn < vp->Base.NumInstructions; insn++) { + const struct prog_instruction *vpi = &vp->Base.Instructions[insn]; + base_ir = vpi; + + dst_reg dst; + src_reg src[3]; + + /* We always emit into a temporary destination register to avoid + * aliasing issues. + */ + dst = dst_reg(this, glsl_type::vec4_type); + + for (int i = 0; i < 3; i++) + src[i] = get_vp_src_reg(vpi->SrcReg[i]); + + switch (vpi->Opcode) { + case OPCODE_ABS: + src[0].abs = true; + src[0].negate = false; + emit(MOV(dst, src[0])); + break; + + case OPCODE_ADD: + emit(ADD(dst, src[0], src[1])); + break; + + case OPCODE_ARL: + if (intel->gen >= 6) { + dst.writemask = WRITEMASK_X; + dst_reg dst_f = dst; + dst_f.type = BRW_REGISTER_TYPE_F; + + emit(RNDD(dst_f, src[0])); + emit(MOV(dst, src_reg(dst_f))); + } else { + emit(RNDD(dst, src[0])); + } + break; + + case OPCODE_DP3: + emit(DP3(dst, src[0], src[1])); + break; + case OPCODE_DP4: + emit(DP4(dst, src[0], src[1])); + break; + case OPCODE_DPH: + emit(DPH(dst, src[0], src[1])); + break; + + case OPCODE_DST: { + dst_reg t = dst; + if (vpi->DstReg.WriteMask & WRITEMASK_X) { + t.writemask = WRITEMASK_X; + emit(MOV(t, src_reg(1.0f))); + } + if (vpi->DstReg.WriteMask & WRITEMASK_Y) { + t.writemask = WRITEMASK_Y; + emit(MUL(t, src[0], src[1])); + } + if (vpi->DstReg.WriteMask & WRITEMASK_Z) { + t.writemask = WRITEMASK_Z; + emit(MOV(t, src[0])); + } + if (vpi->DstReg.WriteMask & WRITEMASK_W) { + t.writemask = WRITEMASK_W; + emit(MOV(t, src[1])); + } + break; + } + + case OPCODE_EXP: { + dst_reg result = dst; + if (vpi->DstReg.WriteMask & WRITEMASK_X) { + /* tmp_d = floor(src[0].x) */ + src_reg tmp_d = src_reg(this, glsl_type::ivec4_type); + assert(tmp_d.type == BRW_REGISTER_TYPE_D); + emit(RNDD(dst_reg(tmp_d), reswizzle(src[0], 0, 0, 0, 0))); + + /* result[0] = 2.0 ^ tmp */ + /* Adjust exponent for floating point: exp += 127 */ + dst_reg tmp_d_x(GRF, tmp_d.reg, glsl_type::int_type, WRITEMASK_X); + emit(ADD(tmp_d_x, tmp_d, src_reg(127))); + + /* Install exponent and sign. Excess drops off the edge: */ + dst_reg res_d_x(GRF, result.reg, glsl_type::int_type, WRITEMASK_X); + emit(BRW_OPCODE_SHL, res_d_x, tmp_d, src_reg(23)); + } + if (vpi->DstReg.WriteMask & WRITEMASK_Y) { + result.writemask = WRITEMASK_Y; + emit(FRC(result, src[0])); + } + if (vpi->DstReg.WriteMask & WRITEMASK_Z) { + result.writemask = WRITEMASK_Z; + emit_math(SHADER_OPCODE_EXP2, result, src[0]); + } + if (vpi->DstReg.WriteMask & WRITEMASK_W) { + result.writemask = WRITEMASK_W; + emit(MOV(result, src_reg(1.0f))); + } + break; + } + + case OPCODE_EX2: + emit_math(SHADER_OPCODE_EXP2, dst, src[0]); + break; + + case OPCODE_FLR: + emit(RNDD(dst, src[0])); + break; + + case OPCODE_FRC: + emit(FRC(dst, src[0])); + break; + + case OPCODE_LG2: + emit_math(SHADER_OPCODE_LOG2, dst, src[0]); + break; + + case OPCODE_LIT: { + dst_reg result = dst; + /* From the ARB_vertex_program spec: + * + * tmp = VectorLoad(op0); + * if (tmp.x < 0) tmp.x = 0; + * if (tmp.y < 0) tmp.y = 0; + * if (tmp.w < -(128.0-epsilon)) tmp.w = -(128.0-epsilon); + * else if (tmp.w > 128-epsilon) tmp.w = 128-epsilon; + * result.x = 1.0; + * result.y = tmp.x; + * result.z = (tmp.x > 0) ? RoughApproxPower(tmp.y, tmp.w) : 0.0; + * result.w = 1.0; + * + * Note that we don't do the clamping to +/- 128. We didn't in + * brw_vs_emit.c either. + */ + if (vpi->DstReg.WriteMask & WRITEMASK_XW) { + result.writemask = WRITEMASK_XW; + emit(MOV(result, src_reg(1.0f))); + } + if (vpi->DstReg.WriteMask & WRITEMASK_YZ) { + result.writemask = WRITEMASK_YZ; + emit(MOV(result, src_reg(0.0f))); + + src_reg tmp_x = reswizzle(src[0], 0, 0, 0, 0); + + emit(CMP(dst_null_d(), tmp_x, src_reg(0.0f), BRW_CONDITIONAL_G)); + emit(IF(BRW_PREDICATE_NORMAL)); + + if (vpi->DstReg.WriteMask & WRITEMASK_Y) { + result.writemask = WRITEMASK_Y; + emit(MOV(result, tmp_x)); + } + + if (vpi->DstReg.WriteMask & WRITEMASK_Z) { + /* if (tmp.y < 0) tmp.y = 0; */ + src_reg tmp_y = reswizzle(src[0], 1, 1, 1, 1); + result.writemask = WRITEMASK_Z; + emit_minmax(BRW_CONDITIONAL_G, result, tmp_y, src_reg(0.0f)); + + src_reg clamped_y(result); + clamped_y.swizzle = BRW_SWIZZLE_ZZZZ; + + src_reg tmp_w = reswizzle(src[0], 3, 3, 3, 3); + + emit_math(SHADER_OPCODE_POW, result, clamped_y, tmp_w); + } + emit(BRW_OPCODE_ENDIF); + } + break; + } + + case OPCODE_LOG: { + dst_reg result = dst; + result.type = BRW_REGISTER_TYPE_UD; + src_reg result_src = src_reg(result); + + src_reg arg0_ud = reswizzle(src[0], 0, 0, 0, 0); + arg0_ud.type = BRW_REGISTER_TYPE_UD; + + /* Perform mant = frexpf(fabsf(x), &exp), adjust exp and mnt + * according to spec: + * + * These almost look likey they could be joined up, but not really + * practical: + * + * result[0].f = (x.i & ((1<<31)-1) >> 23) - 127 + * result[1].i = (x.i & ((1<<23)-1) + (127<<23) + */ + if (vpi->DstReg.WriteMask & WRITEMASK_XZ) { + result.writemask = WRITEMASK_X; + emit(AND(result, arg0_ud, src_reg((1u << 31) - 1))); + emit(BRW_OPCODE_SHR, result, result_src, src_reg(23u)); + src_reg result_d(result_src); + result_d.type = BRW_REGISTER_TYPE_D; /* does it matter? */ + result.type = BRW_REGISTER_TYPE_F; + emit(ADD(result, result_d, src_reg(-127))); + } + + if (vpi->DstReg.WriteMask & WRITEMASK_YZ) { + result.writemask = WRITEMASK_Y; + result.type = BRW_REGISTER_TYPE_UD; + emit(AND(result, arg0_ud, src_reg((1u << 23) - 1))); + emit(OR(result, result_src, src_reg(127u << 23))); + } + + if (vpi->DstReg.WriteMask & WRITEMASK_Z) { + /* result[2] = result[0] + LOG2(result[1]); */ + + /* Why bother? The above is just a hint how to do this with a + * taylor series. Maybe we *should* use a taylor series as by + * the time all the above has been done it's almost certainly + * quicker than calling the mathbox, even with low precision. + * + * Options are: + * - result[0] + mathbox.LOG2(result[1]) + * - mathbox.LOG2(arg0.x) + * - result[0] + inline_taylor_approx(result[1]) + */ + result.type = BRW_REGISTER_TYPE_F; + result.writemask = WRITEMASK_Z; + src_reg result_x(result), result_y(result), result_z(result); + result_x.swizzle = BRW_SWIZZLE_XXXX; + result_y.swizzle = BRW_SWIZZLE_YYYY; + result_z.swizzle = BRW_SWIZZLE_ZZZZ; + emit_math(SHADER_OPCODE_LOG2, result, result_y); + emit(ADD(result, result_z, result_x)); + } + + if (vpi->DstReg.WriteMask & WRITEMASK_W) { + result.type = BRW_REGISTER_TYPE_F; + result.writemask = WRITEMASK_W; + emit(MOV(result, src_reg(1.0f))); + } + break; + } + + case OPCODE_MAD: { + src_reg temp = src_reg(this, glsl_type::vec4_type); + emit(MUL(dst_reg(temp), src[0], src[1])); + emit(ADD(dst, temp, src[2])); + break; + } + + case OPCODE_MAX: + emit_minmax(BRW_CONDITIONAL_G, dst, src[0], src[1]); + break; + + case OPCODE_MIN: + emit_minmax(BRW_CONDITIONAL_L, dst, src[0], src[1]); + break; + + case OPCODE_MOV: + emit(MOV(dst, src[0])); + break; + + case OPCODE_MUL: + emit(MUL(dst, src[0], src[1])); + break; + + case OPCODE_POW: + emit_math(SHADER_OPCODE_POW, dst, src[0], src[1]); + break; + + case OPCODE_RCP: + emit_math(SHADER_OPCODE_RCP, dst, src[0]); + break; + + case OPCODE_RSQ: + emit_math(SHADER_OPCODE_RSQ, dst, src[0]); + break; + + case OPCODE_SGE: + emit_vp_sop(BRW_CONDITIONAL_GE, dst, src[0], src[1], one); + break; + + case OPCODE_SLT: + emit_vp_sop(BRW_CONDITIONAL_L, dst, src[0], src[1], one); + break; + + case OPCODE_SUB: { + src_reg neg_src1 = src[1]; + neg_src1.negate = !src[1].negate; + emit(ADD(dst, src[0], neg_src1)); + break; + } + + case OPCODE_SWZ: + /* Note that SWZ's extended swizzles are handled in the general + * get_src_reg() code. + */ + emit(MOV(dst, src[0])); + break; + + case OPCODE_XPD: { + src_reg t1 = src_reg(this, glsl_type::vec4_type); + src_reg t2 = src_reg(this, glsl_type::vec4_type); + + emit(MUL(dst_reg(t1), + reswizzle(src[0], 1, 2, 0, 3), + reswizzle(src[1], 2, 0, 1, 3))); + emit(MUL(dst_reg(t2), + reswizzle(src[0], 2, 0, 1, 3), + reswizzle(src[1], 1, 2, 0, 3))); + t2.negate = true; + emit(ADD(dst, t1, t2)); + break; + } + + case OPCODE_END: + break; + + default: + _mesa_problem(ctx, "Unsupported opcode %s in vertex program\n", + _mesa_opcode_string(vpi->Opcode)); + } + + /* Copy the temporary back into the actual destination register. */ + if (vpi->Opcode != OPCODE_END) { + emit(MOV(get_vp_dst_reg(vpi->DstReg), src_reg(dst))); + } + } + + /* If we used relative addressing, we need to upload all constants as + * pull constants. Do that now. + */ + if (this->need_all_constants_in_pull_buffer) { + const struct gl_program_parameter_list *params = c->vp->program.Base.Parameters; + unsigned i; + for (i = 0; i < params->NumParameters * 4; i++) { + c->prog_data.pull_param[i] = ¶ms->ParameterValues[i / 4][i % 4].f; + } + c->prog_data.nr_pull_params = i; + } +} + +void +vec4_visitor::setup_vp_regs() +{ + /* PROGRAM_TEMPORARY */ + int num_temp = vp->Base.NumTemporaries; + vp_temp_regs = rzalloc_array(mem_ctx, src_reg, num_temp); + for (int i = 0; i < num_temp; i++) + vp_temp_regs[i] = src_reg(this, glsl_type::vec4_type); + + /* PROGRAM_STATE_VAR etc. */ + struct gl_program_parameter_list *plist = c->vp->program.Base.Parameters; + for (unsigned p = 0; p < plist->NumParameters; p++) { + unsigned components = plist->Parameters[p].Size; + + /* Parameters should be either vec4 uniforms or single component + * constants; matrices and other larger types should have been broken + * down earlier. + */ + assert(components <= 4); + + this->uniform_size[this->uniforms] = 1; /* 1 vec4 */ + this->uniform_vector_size[this->uniforms] = components; + for (unsigned i = 0; i < 4; i++) { + c->prog_data.param[this->uniforms * 4 + i] = i >= components ? 0 : + &plist->ParameterValues[p][i].f; + } + this->uniforms++; /* counted in vec4 units */ + } + + /* PROGRAM_OUTPUT */ + for (int slot = 0; slot < c->prog_data.vue_map.num_slots; slot++) { + int vert_result = c->prog_data.vue_map.slot_to_vert_result[slot]; + if (vert_result == VERT_RESULT_PSIZ) + output_reg[vert_result] = dst_reg(this, glsl_type::float_type); + else + output_reg[vert_result] = dst_reg(this, glsl_type::vec4_type); + assert(output_reg[vert_result].type == BRW_REGISTER_TYPE_F); + } + + /* PROGRAM_ADDRESS */ + this->vp_addr_reg = src_reg(this, glsl_type::int_type); + assert(this->vp_addr_reg.type == BRW_REGISTER_TYPE_D); +} + +dst_reg +vec4_visitor::get_vp_dst_reg(const prog_dst_register &dst) +{ + dst_reg result; + + assert(!dst.RelAddr); + + switch (dst.File) { + case PROGRAM_TEMPORARY: + result = dst_reg(vp_temp_regs[dst.Index]); + break; + + case PROGRAM_OUTPUT: + result = output_reg[dst.Index]; + break; + + case PROGRAM_ADDRESS: { + assert(dst.Index == 0); + result = dst_reg(this->vp_addr_reg); + break; + } + + case PROGRAM_UNDEFINED: + return dst_null_f(); + + default: + assert("vec4_vp: bad destination register file"); + return dst_reg(this, glsl_type::vec4_type); + } + + result.writemask = dst.WriteMask; + return result; +} + +src_reg +vec4_visitor::get_vp_src_reg(const prog_src_register &src) +{ + struct gl_program_parameter_list *plist = c->vp->program.Base.Parameters; + + src_reg result; + + assert(!src.Abs); + + switch (src.File) { + case PROGRAM_UNDEFINED: + return src_reg(brw_null_reg()); + + case PROGRAM_TEMPORARY: + result = vp_temp_regs[src.Index]; + break; + + case PROGRAM_INPUT: + result = src_reg(ATTR, src.Index, glsl_type::vec4_type); + result.type = BRW_REGISTER_TYPE_F; + break; + + case PROGRAM_ADDRESS: { + assert(src.Index == 0); + result = this->vp_addr_reg; + break; + } + + case PROGRAM_STATE_VAR: + case PROGRAM_CONSTANT: + /* From the ARB_vertex_program specification: + * "Relative addressing can only be used for accessing program + * parameter arrays." + */ + if (src.RelAddr) { + /* Since we have no idea what the base of the array is, we need to + * upload ALL constants as push constants. + */ + this->need_all_constants_in_pull_buffer = true; + + /* Add the small constant index to the address register */ + src_reg reladdr = src_reg(this, glsl_type::int_type); + dst_reg dst_reladdr = dst_reg(reladdr); + dst_reladdr.writemask = WRITEMASK_X; + emit(ADD(dst_reladdr, this->vp_addr_reg, src_reg(src.Index))); + + if (intel->gen < 6) + emit(MUL(dst_reladdr, reladdr, src_reg(16))); + + #if 0 + assert(src.Index < this->uniforms); + result = src_reg(dst_reg(UNIFORM, 0)); + result.type = BRW_REGISTER_TYPE_F; + result.reladdr = new(mem_ctx) src_reg(); + memcpy(result.reladdr, &reladdr, sizeof(src_reg)); + #endif + + result = src_reg(this, glsl_type::vec4_type); + src_reg surf_index = src_reg(unsigned(SURF_INDEX_VERT_CONST_BUFFER)); + vec4_instruction *load = + new(mem_ctx) vec4_instruction(this, VS_OPCODE_PULL_CONSTANT_LOAD, + dst_reg(result), surf_index, reladdr); + load->base_mrf = 14; + load->mlen = 1; + emit(load); + break; + } + + /* We actually want to look at the type in the Parameters list for this, + * because this lets us upload constant builtin uniforms as actual + * constants. + */ + switch (plist->Parameters[src.Index].Type) { + case PROGRAM_CONSTANT: + result = src_reg(this, glsl_type::vec4_type); + for (int i = 0; i < 4; i++) { + dst_reg t = dst_reg(result); + t.writemask = 1 << i; + emit(MOV(t, src_reg(plist->ParameterValues[src.Index][i].f))); + } + break; + + case PROGRAM_STATE_VAR: + assert(src.Index < this->uniforms); + result = src_reg(dst_reg(UNIFORM, src.Index)); + result.type = BRW_REGISTER_TYPE_F; + break; + + default: + _mesa_problem(ctx, "bad uniform src register file: %s\n", + _mesa_register_file_name((gl_register_file)src.File)); + return src_reg(this, glsl_type::vec4_type); + } + break; + + default: + _mesa_problem(ctx, "bad src register file: %s\n", + _mesa_register_file_name((gl_register_file)src.File)); + return src_reg(this, glsl_type::vec4_type); + } + + if (src.Swizzle != SWIZZLE_NOOP || src.Negate) { + unsigned short zeros_mask = 0; + unsigned short ones_mask = 0; + unsigned short src_mask = 0; + unsigned short src_swiz[4]; + + for (int i = 0; i < 4; i++) { + src_swiz[i] = 0; /* initialize for safety */ + + /* The ZERO, ONE, and Negate options are only used for OPCODE_SWZ, + * but it's simplest to handle it here. + */ + int s = GET_SWZ(src.Swizzle, i); + switch (s) { + case SWIZZLE_X: + case SWIZZLE_Y: + case SWIZZLE_Z: + case SWIZZLE_W: + src_mask |= 1 << i; + src_swiz[i] = s; + break; + case SWIZZLE_ZERO: + zeros_mask |= 1 << i; + break; + case SWIZZLE_ONE: + ones_mask |= 1 << i; + break; + } + } + + result.swizzle = + BRW_SWIZZLE4(src_swiz[0], src_swiz[1], src_swiz[2], src_swiz[3]); + + /* The hardware doesn't natively handle the SWZ instruction's zero/one + * swizzles or per-component negation, so we need to use a temporary. + */ + if (zeros_mask || ones_mask || src.Negate) { + src_reg temp_src(this, glsl_type::vec4_type); + dst_reg temp(temp_src); + + if (src_mask) { + temp.writemask = src_mask; + emit(MOV(temp, result)); + } + + if (zeros_mask) { + temp.writemask = zeros_mask; + emit(MOV(temp, src_reg(0.0f))); + } + + if (ones_mask) { + temp.writemask = ones_mask; + emit(MOV(temp, src_reg(1.0f))); + } + + if (src.Negate) { + temp.writemask = src.Negate; + src_reg neg(temp_src); + neg.negate = true; + emit(MOV(temp, neg)); + } + result = temp_src; + } + } + + return result; +} diff --git a/src/mesa/drivers/dri/i965/brw_vs.c b/src/mesa/drivers/dri/i965/brw_vs.c index 4e950742099..551f97717a5 100644 --- a/src/mesa/drivers/dri/i965/brw_vs.c +++ b/src/mesa/drivers/dri/i965/brw_vs.c @@ -245,11 +245,12 @@ do_vs_prog(struct brw_context *brw, */ param_count = vs->num_uniform_components * 4; - /* We also upload clip plane data as uniforms */ - param_count += MAX_CLIP_PLANES * 4; } else { param_count = vp->program.Base.Parameters->NumParameters * 4; } + /* We also upload clip plane data as uniforms */ + param_count += MAX_CLIP_PLANES * 4; + c.prog_data.param = rzalloc_array(NULL, const float *, param_count); c.prog_data.pull_param = rzalloc_array(NULL, const float *, param_count); @@ -281,13 +282,9 @@ do_vs_prog(struct brw_context *brw, /* Emit GEN4 code. */ - if (prog) { - if (!brw_vs_emit(prog, &c)) { - ralloc_free(mem_ctx); - return false; - } - } else { - brw_old_vs_emit(&c); + if (!brw_vs_emit(prog, &c)) { + ralloc_free(mem_ctx); + return false; } if (c.prog_data.nr_pull_params)