Module: vkd3d Branch: master Commit: 3d80b3f4bd84a190c6db6ca40790e17427b1619a URL: https://source.winehq.org/git/vkd3d.git/?a=commit;h=3d80b3f4bd84a190c6db6ca4...
Author: Józef Kucia jkucia@codeweavers.com Date: Mon Jan 14 17:05:43 2019 +0100
vkd3d-shader: Add basic support for transform feedback.
Signed-off-by: Józef Kucia jkucia@codeweavers.com Signed-off-by: Henri Verbeet hverbeet@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
include/vkd3d_shader.h | 24 +++++++++++++ libs/vkd3d-shader/spirv.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 115 insertions(+)
diff --git a/include/vkd3d_shader.h b/include/vkd3d_shader.h index 946defb..2ac8e0f 100644 --- a/include/vkd3d_shader.h +++ b/include/vkd3d_shader.h @@ -20,6 +20,7 @@ #define __VKD3D_SHADER_H
#include <stdbool.h> +#include <stdint.h> #include <vkd3d_types.h>
#ifdef __cplusplus @@ -31,6 +32,7 @@ enum vkd3d_shader_structure_type VKD3D_SHADER_STRUCTURE_TYPE_SHADER_INTERFACE, VKD3D_SHADER_STRUCTURE_TYPE_COMPILE_ARGUMENTS, VKD3D_SHADER_STRUCTURE_TYPE_SCAN_INFO, + VKD3D_SHADER_STRUCTURE_TYPE_TRANSFORM_FEEDBACK_INFO,
VKD3D_FORCE_32_BIT_ENUM(VKD3D_SHADER_STRUCTURE_TYPE), }; @@ -151,6 +153,28 @@ struct vkd3d_shader_interface unsigned int uav_counter_count; };
+struct vkd3d_shader_transform_feedback_element +{ + unsigned int stream_index; + const char *semantic_name; + unsigned int semantic_index; + uint8_t component_index; + uint8_t component_count; + uint8_t output_slot; +}; + +/* Extends vkd3d_shader_interface. */ +struct vkd3d_shader_transform_feedback_info +{ + enum vkd3d_shader_structure_type type; + const void *next; + + const struct vkd3d_shader_transform_feedback_element *elements; + unsigned int element_count; + const unsigned int *buffer_strides; + unsigned int buffer_stride_count; +}; + enum vkd3d_shader_target { VKD3D_SHADER_TARGET_NONE, diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c index 538c44f..9d1a0df 100644 --- a/libs/vkd3d-shader/spirv.c +++ b/libs/vkd3d-shader/spirv.c @@ -108,6 +108,27 @@ static void vkd3d_spirv_validate(const struct vkd3d_shader_code *spirv, enum vkd
#endif /* HAVE_SPIRV_TOOLS */
+struct vkd3d_struct +{ + enum vkd3d_shader_structure_type type; + const void *next; +}; + +#define vkd3d_find_struct(c, t) vkd3d_find_struct_(c, VKD3D_SHADER_STRUCTURE_TYPE_##t) +static const void *vkd3d_find_struct_(const struct vkd3d_struct *chain, + enum vkd3d_shader_structure_type type) +{ + while (chain) + { + if (chain->type == type) + return chain; + + chain = chain->next; + } + + return NULL; +} + #define VKD3D_SPIRV_VERSION 0x00010000 #define VKD3D_SPIRV_GENERATOR_ID 18 #define VKD3D_SPIRV_GENERATOR_VERSION 1 @@ -1884,6 +1905,7 @@ struct vkd3d_dxbc_compiler bool after_declarations_section; const struct vkd3d_shader_signature *input_signature; const struct vkd3d_shader_signature *output_signature; + const struct vkd3d_shader_transform_feedback_info *xfb_info; struct vkd3d_shader_output_info { uint32_t id; @@ -1934,6 +1956,8 @@ struct vkd3d_dxbc_compiler *vkd3d_dxbc_compiler_create(const struct vkd3d_shader
if (shader_interface) { + compiler->xfb_info = vkd3d_find_struct(shader_interface->next, TRANSFORM_FEEDBACK_INFO); + compiler->shader_interface = *shader_interface; if (shader_interface->push_constant_buffer_count) { @@ -3178,6 +3202,64 @@ static unsigned int vkd3d_count_signature_elements_for_reg( return count; }
+static void vkd3d_dxbc_compiler_decorate_xfb_output(struct vkd3d_dxbc_compiler *compiler, + uint32_t id, unsigned int component_count, const struct vkd3d_shader_signature_element *signature_element) +{ + const struct vkd3d_shader_transform_feedback_info *xfb_info = compiler->xfb_info; + const struct vkd3d_shader_transform_feedback_element *xfb_element; + struct vkd3d_spirv_builder *builder = &compiler->spirv_builder; + unsigned int offset, stride, i; + + if (!xfb_info) + return; + + offset = 0; + xfb_element = NULL; + for (i = 0; i < xfb_info->element_count; ++i) + { + const struct vkd3d_shader_transform_feedback_element *e = &xfb_info->elements[i]; + + if (e->stream_index == signature_element->stream_index + && !strcasecmp(e->semantic_name, signature_element->semantic_name) + && e->semantic_index == signature_element->semantic_index) + { + xfb_element = e; + break; + } + + offset += 4 * e->component_count; + } + + if (!xfb_element) + return; + + if (xfb_element->component_index || xfb_element->component_count > component_count) + { + FIXME("Unhandled component range %u, %u.\n", xfb_element->component_index, xfb_element->component_count); + return; + } + + if (xfb_element->output_slot < xfb_info->buffer_stride_count) + { + stride = xfb_info->buffer_strides[xfb_element->output_slot]; + } + else + { + stride = 0; + for (i = 0; i < xfb_info->element_count; ++i) + { + const struct vkd3d_shader_transform_feedback_element *e = &xfb_info->elements[i]; + + if (e->stream_index == xfb_element->stream_index && e->output_slot == xfb_element->output_slot) + stride += 4 * e->component_count; + } + } + + vkd3d_spirv_build_op_decorate1(builder, id, SpvDecorationXfbBuffer, xfb_element->output_slot); + vkd3d_spirv_build_op_decorate1(builder, id, SpvDecorationXfbStride, stride); + vkd3d_spirv_build_op_decorate1(builder, id, SpvDecorationOffset, offset); +} + static uint32_t vkd3d_dxbc_compiler_emit_input(struct vkd3d_dxbc_compiler *compiler, const struct vkd3d_shader_dst_param *dst, enum vkd3d_shader_input_sysval_semantic sysval) { @@ -3541,6 +3623,8 @@ static void vkd3d_dxbc_compiler_emit_output(struct vkd3d_dxbc_compiler *compiler if (component_idx) vkd3d_spirv_build_op_decorate1(builder, id, SpvDecorationComponent, component_idx); } + + vkd3d_dxbc_compiler_decorate_xfb_output(compiler, id, output_component_count, signature_element); }
compiler->output_info[signature_idx].id = id; @@ -3583,6 +3667,7 @@ static void vkd3d_dxbc_compiler_emit_output(struct vkd3d_dxbc_compiler *compiler
static void vkd3d_dxbc_compiler_emit_initial_declarations(struct vkd3d_dxbc_compiler *compiler) { + const struct vkd3d_shader_transform_feedback_info *xfb_info = compiler->xfb_info; struct vkd3d_spirv_builder *builder = &compiler->spirv_builder;
switch (compiler->shader_type) @@ -3610,6 +3695,12 @@ static void vkd3d_dxbc_compiler_emit_initial_declarations(struct vkd3d_dxbc_comp ERR("Invalid shader type %#x.\n", compiler->shader_type); }
+ if (xfb_info && xfb_info->element_count) + { + vkd3d_spirv_enable_capability(builder, SpvCapabilityTransformFeedback); + vkd3d_dxbc_compiler_emit_execution_mode(compiler, SpvExecutionModeXfb, NULL, 0); + } + vkd3d_dxbc_compiler_emit_shader_signature_outputs(compiler); }