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Add UBO/BlendEquation/BlendFunc to GL state manager

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This commit is contained in:
wheremyfoodat 2024-07-17 01:32:55 +03:00
parent 219a560cbe
commit a4ec770587
3 changed files with 67 additions and 7 deletions
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48
include/renderer_gl/gl_state.hpp
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@ -40,9 +40,13 @@ struct GLStateManager {
GLuint boundVAO;
GLuint boundVBO;
GLuint currentProgram;
GLuint boundUBO;
GLenum depthFunc;
GLenum logicOp;
GLenum blendEquationRGB, blendEquationAlpha;
GLenum blendFuncSourceRGB, blendFuncSourceAlpha;
GLenum blendFuncDestRGB, blendFuncDestAlpha;
void reset();
void resetBlend();
@ -51,7 +55,7 @@ struct GLStateManager {
void resetColourMask();
void resetDepth();
void resetVAO();
void resetVBO();
void resetBuffers();
void resetProgram();
void resetScissor();
void resetStencil();
@ -183,6 +187,13 @@ struct GLStateManager {
}
}
void bindUBO(GLuint handle) {
if (boundUBO != handle) {
boundUBO = handle;
glBindBuffer(GL_UNIFORM_BUFFER, boundUBO);
}
}
void bindVAO(const OpenGL::VertexArray& vao) { bindVAO(vao.handle()); }
void bindVBO(const OpenGL::VertexBuffer& vbo) { bindVBO(vbo.handle()); }
void useProgram(const OpenGL::Program& program) { useProgram(program.handle()); }
@ -224,6 +235,41 @@ struct GLStateManager {
}
void setDepthFunc(OpenGL::DepthFunc func) { setDepthFunc(static_cast<GLenum>(func)); }
// Counterpart to glBlendEquationSeparate
void setBlendEquation(GLenum modeRGB, GLenum modeAlpha) {
if (blendEquationRGB != modeRGB || blendEquationAlpha != modeAlpha) {
blendEquationRGB = modeRGB;
blendEquationAlpha = modeAlpha;
glBlendEquationSeparate(modeRGB, modeAlpha);
}
}
// Counterpart to glBlendFuncSeparate
void setBlendFunc(GLenum sourceRGB, GLenum destRGB, GLenum sourceAlpha, GLenum destAlpha) {
if (blendFuncSourceRGB != sourceRGB || blendFuncDestRGB != destRGB || blendFuncSourceAlpha != sourceAlpha ||
blendFuncDestAlpha != destAlpha) {
blendFuncSourceRGB = sourceRGB;
blendFuncDestRGB = destRGB;
blendFuncSourceAlpha = sourceAlpha;
blendFuncDestAlpha = destAlpha;
glBlendFuncSeparate(sourceRGB, destRGB,sourceAlpha, destAlpha);
}
}
// Counterpart to regular glBlendEquation
void setBlendEquation(GLenum mode) { setBlendEquation(mode, mode); }
void setBlendEquation(OpenGL::BlendEquation modeRGB, OpenGL::BlendEquation modeAlpha) {
setBlendEquation(static_cast<GLenum>(modeRGB), static_cast<GLenum>(modeAlpha));
}
void setBlendEquation(OpenGL::BlendEquation mode) {
setBlendEquation(static_cast<GLenum>(mode));
}
};
static_assert(std::is_trivially_constructible<GLStateManager>(), "OpenGL State Manager class is not trivially constructible!");