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[PICA] Depth buffering v1

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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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43
include/renderer_gl/surfaces.hpp
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@ -40,13 +40,13 @@ struct ColourBuffer {
void allocate() {
// Create texture for the FBO, setting up filters and the like
// Reading back the current texture is slow, but allocate calls should be and far between.
// Reading back the current texture is slow, but allocate calls should be few and far between.
// If this becomes a bottleneck, we can fix it semi-easily
auto prevTexture = OpenGL::getTex2D();
texture.create(size.x(), size.y(), GL_RGBA8);
texture.bind();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
texture.setMinFilter(OpenGL::Linear);
texture.setMagFilter(OpenGL::Linear);
glBindTexture(GL_TEXTURE_2D, prevTexture);
//Helpers::panic("Creating FBO: %d, %d\n", size.x(), size.y());
@ -115,14 +115,47 @@ struct DepthBuffer {
DepthBuffer() : valid(false) {}
DepthBuffer(u32 loc, Formats format, u32 x, u32 y, bool valid = true) :
location(loc), format(format), size({x, y}), valid(valid) {}
location(loc), format(format), size({x, y}), valid(valid) {
u64 endLoc = (u64)loc + sizeInBytes();
// Check if start and end are valid here
range = Interval<u32>(loc, (u32)endLoc);
}
bool hasStencil() {
return format == Formats::Depth24Stencil8;
}
void allocate() {
printf("Make this depth buffer allocate itself\n");
// Create texture for the FBO, setting up filters and the like
// Reading back the current texture is slow, but allocate calls should be few and far between.
// If this becomes a bottleneck, we can fix it semi-easily
auto prevTexture = OpenGL::getTex2D();
// Internal formats for the texture based on format
static constexpr std::array<GLenum, 4> internalFormats = {
GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT24, GL_DEPTH24_STENCIL8
};
// Format of the texture
static constexpr std::array<GLenum, 4> formats = {
GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL
};
static constexpr std::array<GLenum, 4> types = {
GL_FLOAT, GL_FLOAT, GL_FLOAT, GL_UNSIGNED_INT_24_8
};
auto internalFormat = internalFormats[(int)format];
auto fmt = formats[(int)format];
auto type = types[(int)format];
texture.createDSTexture(size.x(), size.y(), internalFormat, fmt, nullptr, type);
texture.bind();
texture.setMinFilter(OpenGL::Linear);
texture.setMagFilter(OpenGL::Linear);
glBindTexture(GL_TEXTURE_2D, prevTexture);
}
void free() {