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[PICA] Depth buffering v1

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This commit is contained in:
wheremyfoodat 2023-03-03 00:59:55 +02:00
parent d79fd1e198
commit eaab13b264
3 changed files with 67 additions and 7 deletions
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22
src/core/renderer_gl/renderer_gl.cpp
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@ -291,14 +291,18 @@ void Renderer::drawVertices(OpenGL::Primitives primType, Vertex* vertices, u32 c
float viewportHeight = f24::fromRaw(regs[PICAInternalRegs::ViewportHeight] & 0xffffff).toFloat32() * 2.0;
OpenGL::setViewport(viewportWidth, viewportHeight);
// Note: The code below must execute after we've bound the colour buffer & its framebuffer
// Because it attaches a depth texture to the aforementioned colour buffer
if (depthEnable) {
OpenGL::enableDepth();
glDepthFunc(depthModes[depthFunc]);
glDepthMask(depthWriteEnable ? GL_TRUE : GL_FALSE);
bindDepthBuffer();
} else {
if (depthWriteEnable) {
OpenGL::enableDepth();
glDepthFunc(GL_ALWAYS);
bindDepthBuffer();
} else {
OpenGL::disableDepth();
}
@ -364,8 +368,24 @@ OpenGL::Framebuffer Renderer::getColourFBO() {
}
}
void Renderer::bindDepthBuffer() {
// Similar logic as the getColourFBO function
DepthBuffer sampleBuffer(depthBufferLoc, depthBufferFormat, fbSize.x(), fbSize.y());
auto buffer = depthBufferCache.find(sampleBuffer);
GLuint tex;
if (buffer.has_value()) {
tex = buffer.value().get().texture.m_handle;
} else {
tex = depthBufferCache.add(sampleBuffer).texture.m_handle;
}
auto attachment = depthBufferFormat == DepthBuffer::Formats::Depth24Stencil8 ? GL_DEPTH_STENCIL_ATTACHMENT : GL_DEPTH_ATTACHMENT;
glFramebufferTexture2D(GL_FRAMEBUFFER, attachment, GL_TEXTURE_2D, tex, 0);
}
OpenGL::Texture Renderer::getTexture(Texture& tex) {
// Similar logic as the getColourFBO/getDepthBuffer functions
// Similar logic as the getColourFBO/bindDepthBuffer functions
auto buffer = textureCache.find(tex);
if (buffer.has_value()) {