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https://github.com/KytyPS5/KytyPS5.git
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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
#include "graphics/shader/shaderVertexMetadata.h"
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#include <array>
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#include <cstring>
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namespace Libs::Graphics {
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const char* ShaderReadVertexMetadata(const ShaderMappedData& data, uint32_t max_user_sgprs,
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ShaderVertexMetadata& metadata) {
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if (data.user_data == nullptr) {
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return "missing AGC user-data header";
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}
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ShaderUserData user_data {};
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std::memcpy(&user_data, data.user_data, sizeof(user_data));
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constexpr uint32_t DirectResourceCount =
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static_cast<uint32_t>(AgcDirectResourceType::Last) + 1u;
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if (user_data.direct_resource_count > DirectResourceCount) {
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return "AGC direct-resource count exceeds the known resource domain";
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}
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std::array<uint16_t, DirectResourceCount> direct_offsets {};
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const auto direct_size =
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static_cast<uint64_t>(user_data.direct_resource_count) * sizeof(uint16_t);
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if (direct_size != 0) {
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if (user_data.direct_resource_offset == nullptr) {
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return "missing AGC direct-resource offsets";
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}
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std::memcpy(direct_offsets.data(), user_data.direct_resource_offset, direct_size);
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}
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ShaderVertexMetadata next;
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for (uint32_t type = 0; type < user_data.direct_resource_count; type++) {
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const auto reg = direct_offsets[type];
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if (reg == AGC_ILLEGAL_DIRECT_OFFSET) {
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continue;
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}
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switch (static_cast<AgcDirectResourceType>(type)) {
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case AgcDirectResourceType::PtrVertexBufferTable: next.vertex_buffer_reg = reg; break;
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case AgcDirectResourceType::PtrVertexAttribDescTable:
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next.vertex_attrib_reg = reg;
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break;
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default: break;
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}
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}
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if (next.vertex_attrib_reg >= 0 && next.vertex_buffer_reg < 0) {
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return "vertex attribute table requires a vertex buffer table";
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}
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if (next.vertex_buffer_reg < 0) {
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metadata = next;
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return nullptr;
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}
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if (static_cast<uint32_t>(next.vertex_buffer_reg) + 1u >= max_user_sgprs) {
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return "vertex table pointer exceeds the user-SGPR domain";
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}
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if (next.vertex_attrib_reg < 0) {
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metadata = next;
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return nullptr;
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}
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if (static_cast<uint32_t>(next.vertex_attrib_reg) + 1u >= max_user_sgprs) {
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return "vertex table pointer exceeds the user-SGPR domain";
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}
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if (data.num_input_semantics == 0 ||
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data.num_input_semantics > ShaderVertexInputInfo::RES_MAX) {
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return "vertex semantic count is outside the supported domain";
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}
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if (data.input_semantics == nullptr) {
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return "missing vertex input semantics";
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}
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next.input_semantics = {data.input_semantics, data.num_input_semantics};
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metadata = next;
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return nullptr;
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}
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} // namespace Libs::Graphics
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