Mathias Agopian
2a72e8aee8
Instead of passing SamplerInterfaceBlocks and a SamplerBindingMap to Program, we now set a 'sampler group' per binding point: Program::addSamplerGroup(...) A sampler group here consists of a list of N 'Sampler' and a 'Sampler' is just a unique name (unifrom name in the shader) and binding point in the shader. That's all the driver layer needs. With this change we get rid of the code that re-created the uniform names in the driver -- this should never have been done there. And we also remove the hash-map lookups in vulkan and metal drivers.
604 lines
22 KiB
C++
604 lines
22 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "CodeGenerator.h"
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#include "generated/shaders.h"
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#include <cctype>
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#include <iomanip>
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namespace filamat {
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// From driverEnum namespace
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using namespace filament;
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using namespace driver;
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using namespace utils;
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std::ostream& CodeGenerator::generateSeparator(std::ostream& out) const {
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out << '\n';
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return out;
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}
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std::ostream& CodeGenerator::generateProlog(std::ostream& out, ShaderType type,
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bool hasExternalSamplers) const {
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assert(mShaderModel != ShaderModel::UNKNOWN);
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switch (mShaderModel) {
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case ShaderModel::UNKNOWN:
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break;
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case ShaderModel::GL_ES_30:
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// Vulkan requires version 310 or higher
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if (mCodeGenTargetApi == TargetApi::VULKAN) {
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// Vulkan requires layout locations on ins and outs, which were not supported
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// in the OpenGL 4.1 GLSL profile.
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out << "#version 310 es\n\n";
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} else {
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out << "#version 300 es\n\n";
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}
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if (hasExternalSamplers) {
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out << "#extension GL_OES_EGL_image_external_essl3 : require\n\n";
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}
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out << "#define TARGET_MOBILE\n";
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break;
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case ShaderModel::GL_CORE_41:
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if (mCodeGenTargetApi == TargetApi::VULKAN) {
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// Vulkan requires binding specifiers on uniforms and samplers, which were not
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// supported in the OpenGL 4.1 GLSL profile.
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out << "#version 450 core\n\n";
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} else {
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out << "#version 410 core\n\n";
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}
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break;
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}
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if (mTargetApi == TargetApi::VULKAN) {
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out << "#define TARGET_VULKAN_ENVIRONMENT\n";
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}
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if (mTargetApi == TargetApi::METAL) {
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out << "#define TARGET_METAL_ENVIRONMENT\n";
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}
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if (mCodeGenTargetApi == TargetApi::VULKAN) {
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out << "#define CODEGEN_TARGET_VULKAN_ENVIRONMENT\n";
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}
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Precision defaultPrecision = getDefaultPrecision(type);
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const char* precision = getPrecisionQualifier(defaultPrecision, Precision::DEFAULT);
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out << "precision " << precision << " float;\n";
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out << "precision " << precision << " int;\n";
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if (type == ShaderType::VERTEX) {
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out << "\n";
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out << "invariant gl_Position;\n";
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}
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out << SHADERS_COMMON_TYPES_FS_DATA;
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out << "\n";
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return out;
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}
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Precision CodeGenerator::getDefaultPrecision(ShaderType type) const {
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if (type == ShaderType::VERTEX) {
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return Precision::HIGH;
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} else if (type == ShaderType::FRAGMENT) {
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if (mShaderModel < ShaderModel::GL_CORE_41) {
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return Precision::MEDIUM;
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} else {
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return Precision::HIGH;
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}
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}
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return Precision::HIGH;
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}
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Precision CodeGenerator::getDefaultUniformPrecision() const {
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if (mShaderModel < ShaderModel::GL_CORE_41) {
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return Precision::MEDIUM;
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} else {
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return Precision::HIGH;
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}
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}
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std::ostream& CodeGenerator::generateEpilog(std::ostream& out) const {
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out << "\n"; // For line compression all shaders finish with a newline character.
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return out;
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}
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std::ostream& CodeGenerator::generateShaderMain(std::ostream& out, ShaderType type) const {
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if (type == ShaderType::VERTEX) {
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out << SHADERS_SHADOWING_VS_DATA;
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out << SHADERS_MAIN_VS_DATA;
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_MAIN_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generatePostProcessMain(std::ostream& out,
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ShaderType type, filament::PostProcessStage variant) const {
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if (type == ShaderType::VERTEX) {
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out << SHADERS_POST_PROCESS_VS_DATA;
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} else if (type == ShaderType::FRAGMENT) {
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switch (variant) {
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case PostProcessStage::TONE_MAPPING_OPAQUE:
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case PostProcessStage::TONE_MAPPING_TRANSLUCENT:
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out << SHADERS_TONE_MAPPING_FS_DATA;
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out << SHADERS_CONVERSION_FUNCTIONS_FS_DATA;
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out << SHADERS_DITHERING_FS_DATA;
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break;
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case PostProcessStage::ANTI_ALIASING_OPAQUE:
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case PostProcessStage::ANTI_ALIASING_TRANSLUCENT:
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out << SHADERS_FXAA_FS_DATA;
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break;
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}
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out << SHADERS_POST_PROCESS_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generateVariable(std::ostream& out, ShaderType type,
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const CString& name, size_t index) const {
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if (!name.empty()) {
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if (type == ShaderType::VERTEX) {
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out << "\n#define VARIABLE_CUSTOM" << index << " " << name.c_str() << "\n";
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out << "\n#define VARIABLE_CUSTOM_AT" << index << " variable_" << name.c_str() << "\n";
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out << "LAYOUT_LOCATION(" << index << ") out vec4 variable_" << name.c_str() << ";\n";
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} else if (type == ShaderType::FRAGMENT) {
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out << "\nLAYOUT_LOCATION(" << index << ") in highp vec4 variable_" << name.c_str() << ";\n";
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}
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}
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return out;
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}
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std::ostream& CodeGenerator::generateShaderInputs(std::ostream& out, ShaderType type,
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const AttributeBitset& attributes, Interpolation interpolation) const {
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const char* shading = getInterpolationQualifier(interpolation);
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out << "#define SHADING_INTERPOLATION " << shading << "\n";
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bool hasTangents = attributes.test(VertexAttribute::TANGENTS);
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generateDefine(out, "HAS_ATTRIBUTE_TANGENTS", hasTangents);
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bool hasColor = attributes.test(VertexAttribute::COLOR);
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generateDefine(out, "HAS_ATTRIBUTE_COLOR", hasColor);
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bool hasUV0 = attributes.test(VertexAttribute::UV0);
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generateDefine(out, "HAS_ATTRIBUTE_UV0", hasUV0);
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bool hasUV1 = attributes.test(VertexAttribute::UV1);
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generateDefine(out, "HAS_ATTRIBUTE_UV1", hasUV1);
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bool hasBoneIndices = attributes.test(VertexAttribute::BONE_INDICES);
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generateDefine(out, "HAS_ATTRIBUTE_BONE_INDICES", hasBoneIndices);
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bool hasBoneWeights = attributes.test(VertexAttribute::BONE_WEIGHTS);
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generateDefine(out, "HAS_ATTRIBUTE_BONE_WEIGHTS", hasBoneWeights);
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if (type == ShaderType::VERTEX) {
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out << "\n";
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generateDefine(out, "LOCATION_POSITION", uint32_t(VertexAttribute::POSITION));
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if (hasTangents) {
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generateDefine(out, "LOCATION_TANGENTS", uint32_t(VertexAttribute::TANGENTS));
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}
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if (hasUV0) {
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generateDefine(out, "LOCATION_UV0", uint32_t(VertexAttribute::UV0));
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}
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if (hasUV1) {
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generateDefine(out, "LOCATION_UV1", uint32_t(VertexAttribute::UV1));
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}
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if (hasColor) {
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generateDefine(out, "LOCATION_COLOR", uint32_t(VertexAttribute::COLOR));
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}
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if (hasBoneIndices) {
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generateDefine(out, "LOCATION_BONE_INDICES", uint32_t(VertexAttribute::BONE_INDICES));
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}
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if (hasBoneWeights) {
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generateDefine(out, "LOCATION_BONE_WEIGHTS", uint32_t(VertexAttribute::BONE_WEIGHTS));
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}
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out << SHADERS_INPUTS_VS_DATA;
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_INPUTS_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generateDepthShaderMain(std::ostream& out, ShaderType type) const {
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if (type == ShaderType::VERTEX) {
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out << SHADERS_DEPTH_MAIN_VS_DATA;
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_DEPTH_MAIN_FS_DATA;
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}
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return out;
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}
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const char* CodeGenerator::getUniformPrecisionQualifier(UniformType type, Precision precision,
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Precision uniformPrecision, Precision defaultPrecision) const noexcept {
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if (!hasPrecision(type)) {
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return "";
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}
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if (precision == Precision::DEFAULT) {
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precision = uniformPrecision;
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}
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return getPrecisionQualifier(precision, defaultPrecision);
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}
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std::ostream& CodeGenerator::generateUniforms(std::ostream& out, ShaderType shaderType,
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uint8_t binding, const UniformInterfaceBlock& uib) const {
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auto const& infos = uib.getUniformInfoList();
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if (infos.empty()) {
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return out;
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}
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const CString& blockName = uib.getName();
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std::string instanceName(uib.getName().c_str());
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instanceName.front() = char(std::tolower((unsigned char)instanceName.front()));
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Precision uniformPrecision = getDefaultUniformPrecision();
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Precision defaultPrecision = getDefaultPrecision(shaderType);
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out << "\nlayout(";
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if (mCodeGenTargetApi == TargetApi::VULKAN) {
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uint32_t bindingIndex = (uint32_t) binding; // avoid char output
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out << "binding = " << bindingIndex << ", ";
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}
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out << "std140) uniform " << blockName.c_str() << " {\n";
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for (auto const& info : infos) {
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char const* const type = getUniformTypeName(info.type);
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char const* const precision = getUniformPrecisionQualifier(info.type, info.precision,
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uniformPrecision, defaultPrecision);
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out << " " << precision;
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if (precision[0] != '\0') out << " ";
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out << type << " " << info.name.c_str();
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if (info.size > 1) {
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out << "[" << info.size << "]";
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}
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out << ";\n";
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}
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out << "} " << instanceName << ";\n";
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return out;
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}
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std::ostream& CodeGenerator::generateSamplers(
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std::ostream& out, uint8_t firstBinding, const SamplerInterfaceBlock& sib) const {
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auto const& infos = sib.getSamplerInfoList();
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if (infos.empty()) {
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return out;
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}
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for (auto const& info : infos) {
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CString uniformName =
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SamplerInterfaceBlock::getUniformName(
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sib.getName().c_str(), info.name.c_str());
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auto type = info.type;
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if (type == SamplerType::SAMPLER_EXTERNAL && mShaderModel != ShaderModel::GL_ES_30) {
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// we're generating the shader for the desktop, where we assume external textures
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// are not supported, in which case we revert to texture2d
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type = SamplerType::SAMPLER_2D;
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}
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char const* const typeName = getSamplerTypeName(type, info.format, info.multisample);
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char const* const precision = getPrecisionQualifier(info.precision, Precision::DEFAULT);
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if (mCodeGenTargetApi == TargetApi::VULKAN) {
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const uint32_t bindingIndex = (uint32_t) firstBinding + info.offset;
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out << "layout(binding = " << bindingIndex << ") ";
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}
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out << "uniform " << precision << " " << typeName << " " << uniformName.c_str();
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out << ";\n";
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}
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out << "\n";
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return out;
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}
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void CodeGenerator::fixupExternalSamplers(
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std::string& shader, SamplerInterfaceBlock const& sib) noexcept {
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auto const& infos = sib.getSamplerInfoList();
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if (infos.empty()) {
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return;
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}
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bool hasExternalSampler = false;
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// Replace sampler2D declarations by samplerExternal declarations as they may have
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// been swapped during a previous optimization step
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for (auto const& info : infos) {
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if (info.type == SamplerType::SAMPLER_EXTERNAL) {
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CString uniformName =
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SamplerInterfaceBlock::getUniformName(
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sib.getName().c_str(), info.name.c_str());
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auto name = std::string("sampler2D ") + uniformName.c_str();
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size_t index = shader.find(name);
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if (index != std::string::npos) {
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hasExternalSampler = true;
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auto newName =
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std::string("samplerExternalOES ") + uniformName.c_str();
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shader.replace(index, name.size(), newName);
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}
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}
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}
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// This method should only be called on shaders that have external samplers but since
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// they may have been removed by previous optimization steps, we check again here
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if (hasExternalSampler) {
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// Find the #version line so we can insert the #extension directive
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size_t index = shader.find("#version");
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index += 8;
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// Find the end of the line and skip the line return
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while (shader[index] != '\n') index++;
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index++;
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shader.insert(index, "#extension GL_OES_EGL_image_external_essl3 : require\n");
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}
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}
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std::ostream& CodeGenerator::generateDefine(std::ostream& out, const char* name, bool value) const {
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if (value) {
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out << "#define " << name << "\n";
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}
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return out;
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}
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std::ostream& CodeGenerator::generateDefine(std::ostream& out, const char* name, float value) const {
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out << "#define " << name << " " << std::fixed << std::setprecision(1) << value << "\n";
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return out;
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}
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std::ostream& CodeGenerator::generateDefine(std::ostream& out, const char* name, uint32_t value) const {
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out << "#define " << name << " " << value << "\n";
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return out;
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}
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std::ostream& CodeGenerator::generateDefine(std::ostream& out, const char* name, const char* string) const {
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out << "#define " << name << " " << string << "\n";
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return out;
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}
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std::ostream& CodeGenerator::generateFunction(std::ostream& out, const char* returnType,
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const char* name, const char* body) const {
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out << "\n" << returnType << " " << name << "()";
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out << " {\n" << body;
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out << "\n}\n";
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return out;
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}
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std::ostream& CodeGenerator::generateMaterialProperty(std::ostream& out,
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MaterialBuilder::Property property, bool isSet) const {
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if (isSet) {
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out << "#define " << "MATERIAL_HAS_" << getConstantName(property) << "\n";
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}
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return out;
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}
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std::ostream& CodeGenerator::generateCommon(std::ostream& out, ShaderType type) const {
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out << SHADERS_COMMON_MATH_FS_DATA;
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if (type == ShaderType::VERTEX) {
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_COMMON_GRAPHICS_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generateCommonMaterial(std::ostream& out, ShaderType type) const {
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if (type == ShaderType::VERTEX) {
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out << SHADERS_COMMON_MATERIAL_VS_DATA;
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_COMMON_MATERIAL_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generateGetters(std::ostream& out, ShaderType type) const {
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out << SHADERS_COMMON_GETTERS_FS_DATA;
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if (type == ShaderType::VERTEX) {
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out << SHADERS_GETTERS_VS_DATA;
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_GETTERS_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generateParameters(std::ostream& out, ShaderType type) const {
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if (type == ShaderType::VERTEX) {
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_SHADING_PARAMETERS_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generateShaderLit(std::ostream& out, ShaderType type,
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filament::Variant variant, filament::Shading shading) const {
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if (type == ShaderType::VERTEX) {
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} else if (type == ShaderType::FRAGMENT) {
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out << SHADERS_COMMON_LIGHTING_FS_DATA;
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if (variant.hasShadowReceiver()) {
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out << SHADERS_SHADOWING_FS_DATA;
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}
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out << SHADERS_BRDF_FS_DATA;
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switch (shading) {
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case Shading::UNLIT:
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assert("Lit shader generated with unlit shading model");
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break;
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case Shading::LIT:
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out << SHADERS_SHADING_MODEL_STANDARD_FS_DATA;
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break;
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case Shading::SUBSURFACE:
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out << SHADERS_SHADING_MODEL_SUBSURFACE_FS_DATA;
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break;
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case Shading::CLOTH:
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out << SHADERS_SHADING_MODEL_CLOTH_FS_DATA;
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break;
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}
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if (shading != Shading::UNLIT) {
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out << SHADERS_LIGHT_INDIRECT_FS_DATA;
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}
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if (variant.hasDirectionalLighting()) {
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out << SHADERS_LIGHT_DIRECTIONAL_FS_DATA;
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}
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if (variant.hasDynamicLighting()) {
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out << SHADERS_LIGHT_PUNCTUAL_FS_DATA;
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}
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out << SHADERS_SHADING_LIT_FS_DATA;
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}
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return out;
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}
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std::ostream& CodeGenerator::generateShaderUnlit(std::ostream& out, ShaderType type,
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filament::Variant variant, bool hasShadowMultiplier) const {
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if (type == ShaderType::VERTEX) {
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} else if (type == ShaderType::FRAGMENT) {
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if (hasShadowMultiplier) {
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if (variant.hasShadowReceiver()) {
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out << SHADERS_SHADOWING_FS_DATA;
|
|
}
|
|
}
|
|
out << SHADERS_SHADING_UNLIT_FS_DATA;
|
|
}
|
|
return out;
|
|
}
|
|
|
|
/* static */
|
|
char const* CodeGenerator::getConstantName(MaterialBuilder::Property property) noexcept {
|
|
using Property = MaterialBuilder::Property;
|
|
switch (property) {
|
|
case Property::BASE_COLOR: return "BASE_COLOR";
|
|
case Property::ROUGHNESS: return "ROUGHNESS";
|
|
case Property::METALLIC: return "METALLIC";
|
|
case Property::REFLECTANCE: return "REFLECTANCE";
|
|
case Property::AMBIENT_OCCLUSION: return "AMBIENT_OCCLUSION";
|
|
case Property::CLEAR_COAT: return "CLEAR_COAT";
|
|
case Property::CLEAR_COAT_ROUGHNESS: return "CLEAR_COAT_ROUGHNESS";
|
|
case Property::CLEAR_COAT_NORMAL: return "CLEAR_COAT_NORMAL";
|
|
case Property::ANISOTROPY: return "ANISOTROPY";
|
|
case Property::ANISOTROPY_DIRECTION: return "ANISOTROPY_DIRECTION";
|
|
case Property::THICKNESS: return "THICKNESS";
|
|
case Property::SUBSURFACE_POWER: return "SUBSURFACE_POWER";
|
|
case Property::SUBSURFACE_COLOR: return "SUBSURFACE_COLOR";
|
|
case Property::SHEEN_COLOR: return "SHEEN_COLOR";
|
|
case Property::EMISSIVE: return "EMISSIVE";
|
|
case Property::NORMAL: return "NORMAL";
|
|
}
|
|
}
|
|
|
|
char const* CodeGenerator::getUniformTypeName(UniformInterfaceBlock::Type type) noexcept {
|
|
using Type = UniformInterfaceBlock::Type;
|
|
switch (type) {
|
|
case Type::BOOL: return "bool";
|
|
case Type::BOOL2: return "bvec2";
|
|
case Type::BOOL3: return "bvec3";
|
|
case Type::BOOL4: return "bvec4";
|
|
case Type::FLOAT: return "float";
|
|
case Type::FLOAT2: return "vec2";
|
|
case Type::FLOAT3: return "vec3";
|
|
case Type::FLOAT4: return "vec4";
|
|
case Type::INT: return "int";
|
|
case Type::INT2: return "ivec2";
|
|
case Type::INT3: return "ivec3";
|
|
case Type::INT4: return "ivec4";
|
|
case Type::UINT: return "uint";
|
|
case Type::UINT2: return "uvec2";
|
|
case Type::UINT3: return "uvec3";
|
|
case Type::UINT4: return "uvec4";
|
|
case Type::MAT3: return "mat3";
|
|
case Type::MAT4: return "mat4";
|
|
}
|
|
}
|
|
|
|
char const* CodeGenerator::getSamplerTypeName(SamplerType type, SamplerFormat format,
|
|
bool multisample) const noexcept {
|
|
switch (type) {
|
|
case SamplerType::SAMPLER_2D:
|
|
if (!multisample) {
|
|
switch (format) {
|
|
case SamplerFormat::INT: return "isampler2D";
|
|
case SamplerFormat::UINT: return "usampler2D";
|
|
case SamplerFormat::FLOAT: return "sampler2D";
|
|
case SamplerFormat::SHADOW: return "sampler2DShadow";
|
|
}
|
|
} else {
|
|
assert(format != SamplerFormat::SHADOW);
|
|
switch (format) {
|
|
case SamplerFormat::INT: return "ms_isampler2D";
|
|
case SamplerFormat::UINT: return "ms_usampler2D";
|
|
case SamplerFormat::FLOAT: return "ms_sampler2D";
|
|
case SamplerFormat::SHADOW: return "sampler2DShadow"; // should not happen
|
|
}
|
|
}
|
|
case SamplerType::SAMPLER_CUBEMAP:
|
|
assert(!multisample);
|
|
switch (format) {
|
|
case SamplerFormat::INT: return "isamplerCube";
|
|
case SamplerFormat::UINT: return "usamplerCube";
|
|
case SamplerFormat::FLOAT: return "samplerCube";
|
|
case SamplerFormat::SHADOW: return "samplerCubeShadow";
|
|
}
|
|
case SamplerType::SAMPLER_EXTERNAL:
|
|
assert(!multisample);
|
|
assert(format != SamplerFormat::SHADOW);
|
|
// Vulkan doesn't have external textures in the sense as GL. Vulkan external textures
|
|
// are created via VK_ANDROID_external_memory_android_hardware_buffer, but they are
|
|
// backed by VkImage just like a normal texture, and sampled from normally.
|
|
return (mCodeGenTargetApi == TargetApi::VULKAN) ? "sampler2D" : "samplerExternalOES";
|
|
}
|
|
}
|
|
|
|
char const* CodeGenerator::getInterpolationQualifier(Interpolation interpolation) noexcept {
|
|
switch (interpolation) {
|
|
case Interpolation::SMOOTH: return "";
|
|
case Interpolation::FLAT: return "flat ";
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
char const* CodeGenerator::getPrecisionQualifier(Precision precision,
|
|
Precision defaultPrecision) noexcept {
|
|
if (precision == defaultPrecision) {
|
|
return "";
|
|
}
|
|
|
|
switch (precision) {
|
|
case Precision::LOW: return "lowp";
|
|
case Precision::MEDIUM: return "mediump";
|
|
case Precision::HIGH: return "highp";
|
|
case Precision::DEFAULT: return "ERROR";
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
bool CodeGenerator::hasPrecision(UniformInterfaceBlock::Type type) noexcept {
|
|
switch (type) {
|
|
case UniformType::BOOL:
|
|
case UniformType::BOOL2:
|
|
case UniformType::BOOL3:
|
|
case UniformType::BOOL4:
|
|
return false;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
} // namespace filamat
|