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Renderer: Cache uniform and attribute locations

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This commit is contained in:
Kae 2023-07-01 07:31:40 +10:00
parent bc3ba0dc56
commit bda140ab73
2 changed files with 48 additions and 15 deletions
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52
source/application/StarRenderer_opengl20.cpp
View File

@ -168,10 +168,12 @@ void OpenGl20Renderer::loadEffectConfig(String const& name, Json const& effectCo
}
glUseProgram(m_program = program);
setupGlUniforms(m_program);
auto& effect = m_effects.emplace(name, Effect{ program, effectConfig, {}, {} }).first->second;
auto& effect = m_effects.emplace(name, Effect()).first->second;
effect.program = m_program;
effect.config = effectConfig;
m_currentEffect = &effect;
setupGlUniforms(effect);
for (auto const& p : effectConfig.getObject("effectParameters", {})) {
EffectParameter effectParameter;
@ -303,7 +305,7 @@ bool OpenGl20Renderer::switchEffectConfig(String const& name) {
Effect& effect = find->second;
glUseProgram(m_program = effect.program);
setupGlUniforms(m_program);
setupGlUniforms(effect);
m_currentEffect = &effect;
return true;
@ -825,21 +827,24 @@ void OpenGl20Renderer::renderGlBuffer(GlRenderBuffer const& renderBuffer, Mat3F
}
}
void OpenGl20Renderer::setupGlUniforms(GLuint program) {
m_positionAttribute = glGetAttribLocation(program, "vertexPosition");
m_texCoordAttribute = glGetAttribLocation(program, "vertexTextureCoordinate");
m_texIndexAttribute = glGetAttribLocation(program, "vertexTextureIndex");
m_colorAttribute = glGetAttribLocation(program, "vertexColor");
m_param1Attribute = glGetAttribLocation(program, "vertexParam1");
//Assumes the passed effect program is currently in use.
void OpenGl20Renderer::setupGlUniforms(Effect& effect) {
GLuint program = effect.program;
m_positionAttribute = effect.getAttribute("vertexPosition");
m_texCoordAttribute = effect.getAttribute("vertexTextureCoordinate");
m_texIndexAttribute = effect.getAttribute("vertexTextureIndex");
m_colorAttribute = effect.getAttribute("vertexColor");
m_param1Attribute = effect.getAttribute("vertexParam1");
m_textureUniforms.clear();
m_textureSizeUniforms.clear();
for (size_t i = 0; i < MultiTextureCount; ++i) {
m_textureUniforms.append(glGetUniformLocation(program, strf("texture{}", i).c_str()));
m_textureSizeUniforms.append(glGetUniformLocation(program, strf("textureSize{}", i).c_str()));
m_textureUniforms.append(effect.getUniform(strf("texture{}", i).c_str()));
m_textureSizeUniforms.append(effect.getUniform(strf("textureSize{}", i).c_str()));
}
m_screenSizeUniform = glGetUniformLocation(program, "screenSize");
m_vertexTransformUniform = glGetUniformLocation(program, "vertexTransform");
m_screenSizeUniform = effect.getUniform("screenSize");
m_vertexTransformUniform = effect.getUniform("vertexTransform");
for (size_t i = 0; i < MultiTextureCount; ++i)
glUniform1i(m_textureUniforms[i], i);
@ -847,4 +852,25 @@ void OpenGl20Renderer::setupGlUniforms(GLuint program) {
glUniform2f(m_screenSizeUniform, m_screenSize[0], m_screenSize[1]);
}
GLuint OpenGl20Renderer::Effect::getAttribute(String const& name) {
auto find = attributes.find(name);
if (find == attributes.end()) {
GLuint attrib = glGetAttribLocation(program, name.utf8Ptr());
attributes[name] = attrib;
return attrib;
}
return find->second;
}
GLuint OpenGl20Renderer::Effect::getUniform(String const& name) {
auto find = uniforms.find(name);
if (find == uniforms.end()) {
GLuint uniform = glGetUniformLocation(program, name.utf8Ptr());
uniforms[name] = uniform;
return uniform;
}
return find->second;
}
}

11
source/application/StarRenderer_opengl20.hpp
View File

@ -158,11 +158,18 @@ private:
RefPtr<GlLoneTexture> textureValue;
};
struct Effect {
class Effect {
public:
GLuint program;
Json config;
StringMap<EffectParameter> parameters;
StringMap<EffectTexture> textures;
StringMap<GLuint> attributes;
StringMap<GLuint> uniforms;
GLuint getAttribute(String const& name);
GLuint getUniform(String const& name);
};
static bool logGlErrorSummary(String prefix);
@ -176,7 +183,7 @@ private:
void renderGlBuffer(GlRenderBuffer const& renderBuffer, Mat3F const& transformation);
void setupGlUniforms(GLuint program);
void setupGlUniforms(Effect& effect);
Vec2U m_screenSize;