From: Giovanni Mascellani gmascellani@codeweavers.com
It is meant as generic pass to host all program changes to single instructions that do not require keeping a global state, intstead of having to loop through the whole program many times. --- libs/vkd3d-shader/ir.c | 140 +++++++++++++++++++++++------------------ 1 file changed, 79 insertions(+), 61 deletions(-)
diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c index 9d5b79047..39b490f85 100644 --- a/libs/vkd3d-shader/ir.c +++ b/libs/vkd3d-shader/ir.c @@ -94,86 +94,104 @@ static bool vsir_instruction_init_with_params(struct vsir_program *program, return true; }
-static enum vkd3d_result vsir_program_lower_texkills(struct vsir_program *program) +static enum vkd3d_result vsir_program_lower_texkill(struct vsir_program *program, + struct vkd3d_shader_instruction *texkill, unsigned int *tmp_idx) { + const unsigned int components_read = 3 + (program->shader_version.major >= 2); struct vkd3d_shader_instruction_array *instructions = &program->instructions; - struct vkd3d_shader_instruction *texkill_ins, *ins; - unsigned int components_read = 3 + (program->shader_version.major >= 2); - unsigned int tmp_idx = ~0u; - unsigned int i, k; - - for (i = 0; i < instructions->count; ++i) - { - texkill_ins = &instructions->elements[i]; + size_t pos = texkill - instructions->elements; + struct vkd3d_shader_instruction *ins; + unsigned int j;
- if (texkill_ins->handler_idx != VKD3DSIH_TEXKILL) - continue; + if (!shader_instruction_array_insert_at(instructions, pos + 1, components_read + 1)) + return VKD3D_ERROR_OUT_OF_MEMORY;
- if (!shader_instruction_array_insert_at(instructions, i + 1, components_read + 1)) - return VKD3D_ERROR_OUT_OF_MEMORY; + if (*tmp_idx == ~0u) + *tmp_idx = program->temp_count++;
- if (tmp_idx == ~0u) - tmp_idx = program->temp_count++; + /* tmp = ins->dst[0] < 0 */
- /* tmp = ins->dst[0] < 0 */ + ins = &instructions->elements[pos + 1]; + if (!vsir_instruction_init_with_params(program, ins, &texkill->location, VKD3DSIH_LTO, 1, 2)) + return VKD3D_ERROR_OUT_OF_MEMORY;
- ins = &instructions->elements[i + 1]; - if (!vsir_instruction_init_with_params(program, ins, &texkill_ins->location, VKD3DSIH_LTO, 1, 2)) + vsir_register_init(&ins->dst[0].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); + ins->dst[0].reg.dimension = VSIR_DIMENSION_VEC4; + ins->dst[0].reg.idx[0].offset = *tmp_idx; + ins->dst[0].write_mask = VKD3DSP_WRITEMASK_ALL; + + ins->src[0].reg = texkill->dst[0].reg; + ins->src[0].swizzle = VKD3D_SHADER_NO_SWIZZLE; + vsir_register_init(&ins->src[1].reg, VKD3DSPR_IMMCONST, VKD3D_DATA_FLOAT, 0); + ins->src[1].reg.dimension = VSIR_DIMENSION_VEC4; + ins->src[1].reg.u.immconst_f32[0] = 0.0f; + ins->src[1].reg.u.immconst_f32[1] = 0.0f; + ins->src[1].reg.u.immconst_f32[2] = 0.0f; + ins->src[1].reg.u.immconst_f32[3] = 0.0f; + + /* tmp.x = tmp.x || tmp.y */ + /* tmp.x = tmp.x || tmp.z */ + /* tmp.x = tmp.x || tmp.w, if sm >= 2.0 */ + + for (j = 1; j < components_read; ++j) + { + ins = &instructions->elements[pos + 1 + j]; + if (!(vsir_instruction_init_with_params(program, ins, &texkill->location, VKD3DSIH_OR, 1, 2))) return VKD3D_ERROR_OUT_OF_MEMORY;
vsir_register_init(&ins->dst[0].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); ins->dst[0].reg.dimension = VSIR_DIMENSION_VEC4; - ins->dst[0].reg.idx[0].offset = tmp_idx; - ins->dst[0].write_mask = VKD3DSP_WRITEMASK_ALL; + ins->dst[0].reg.idx[0].offset = *tmp_idx; + ins->dst[0].write_mask = VKD3DSP_WRITEMASK_0;
- ins->src[0].reg = texkill_ins->dst[0].reg; - ins->src[0].swizzle = VKD3D_SHADER_NO_SWIZZLE; - vsir_register_init(&ins->src[1].reg, VKD3DSPR_IMMCONST, VKD3D_DATA_FLOAT, 0); + vsir_register_init(&ins->src[0].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); + ins->src[0].reg.dimension = VSIR_DIMENSION_VEC4; + ins->src[0].reg.idx[0].offset = *tmp_idx; + ins->src[0].swizzle = VKD3D_SHADER_SWIZZLE(X, X, X, X); + vsir_register_init(&ins->src[1].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); ins->src[1].reg.dimension = VSIR_DIMENSION_VEC4; - ins->src[1].reg.u.immconst_f32[0] = 0.0f; - ins->src[1].reg.u.immconst_f32[1] = 0.0f; - ins->src[1].reg.u.immconst_f32[2] = 0.0f; - ins->src[1].reg.u.immconst_f32[3] = 0.0f; + ins->src[1].reg.idx[0].offset = *tmp_idx; + ins->src[1].swizzle = vkd3d_shader_create_swizzle(j, j, j, j); + }
- /* tmp.x = tmp.x || tmp.y */ - /* tmp.x = tmp.x || tmp.z */ - /* tmp.x = tmp.x || tmp.w, if sm >= 2.0 */ + /* discard_nz tmp.x */
- for (k = 1; k < components_read; ++k) - { - ins = &instructions->elements[i + 1 + k]; - if (!(vsir_instruction_init_with_params(program, ins, &texkill_ins->location, VKD3DSIH_OR, 1, 2))) - return VKD3D_ERROR_OUT_OF_MEMORY; + ins = &instructions->elements[pos + 1 + components_read]; + if (!(vsir_instruction_init_with_params(program, ins, &texkill->location, VKD3DSIH_DISCARD, 0, 1))) + return VKD3D_ERROR_OUT_OF_MEMORY; + ins->flags = VKD3D_SHADER_CONDITIONAL_OP_NZ;
- vsir_register_init(&ins->dst[0].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); - ins->dst[0].reg.dimension = VSIR_DIMENSION_VEC4; - ins->dst[0].reg.idx[0].offset = tmp_idx; - ins->dst[0].write_mask = VKD3DSP_WRITEMASK_0; - - vsir_register_init(&ins->src[0].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); - ins->src[0].reg.dimension = VSIR_DIMENSION_VEC4; - ins->src[0].reg.idx[0].offset = tmp_idx; - ins->src[0].swizzle = VKD3D_SHADER_SWIZZLE(X, X, X, X); - vsir_register_init(&ins->src[1].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); - ins->src[1].reg.dimension = VSIR_DIMENSION_VEC4; - ins->src[1].reg.idx[0].offset = tmp_idx; - ins->src[1].swizzle = vkd3d_shader_create_swizzle(k, k, k, k); - } + vsir_register_init(&ins->src[0].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); + ins->src[0].reg.dimension = VSIR_DIMENSION_VEC4; + ins->src[0].reg.idx[0].offset = *tmp_idx; + ins->src[0].swizzle = VKD3D_SHADER_SWIZZLE(X, X, X, X);
- /* discard_nz tmp.x */ + /* Make the original instruction no-op */ + vkd3d_shader_instruction_make_nop(texkill);
- ins = &instructions->elements[i + 1 + components_read]; - if (!(vsir_instruction_init_with_params(program, ins, &texkill_ins->location, VKD3DSIH_DISCARD, 0, 1))) - return VKD3D_ERROR_OUT_OF_MEMORY; - ins->flags = VKD3D_SHADER_CONDITIONAL_OP_NZ; + return VKD3D_OK; +}
- vsir_register_init(&ins->src[0].reg, VKD3DSPR_TEMP, VKD3D_DATA_UINT, 1); - ins->src[0].reg.dimension = VSIR_DIMENSION_VEC4; - ins->src[0].reg.idx[0].offset = tmp_idx; - ins->src[0].swizzle = VKD3D_SHADER_SWIZZLE(X, X, X, X); +static enum vkd3d_result vsir_program_lower_instructions(struct vsir_program *program) +{ + struct vkd3d_shader_instruction_array *instructions = &program->instructions; + unsigned int tmp_idx = ~0u, i; + enum vkd3d_result ret;
- /* Make the original instruction no-op */ - vkd3d_shader_instruction_make_nop(texkill_ins); + for (i = 0; i < instructions->count; ++i) + { + struct vkd3d_shader_instruction *ins = &instructions->elements[i]; + + switch (ins->handler_idx) + { + case VKD3DSIH_TEXKILL: + if ((ret = vsir_program_lower_texkill(program, ins, &tmp_idx)) < 0) + return ret; + break; + + default: + break; + } }
return VKD3D_OK; @@ -5409,7 +5427,7 @@ enum vkd3d_result vsir_program_normalise(struct vsir_program *program, uint64_t
remove_dcl_temps(program);
- if ((result = vsir_program_lower_texkills(program)) < 0) + if ((result = vsir_program_lower_instructions(program)) < 0) return result;
if (program->shader_version.major >= 6)