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gl_texture_cache: Properly implement depth/stencil sampling 

This addresses the long standing issue of compatibility vs. core
profiles on OpenGL, properly implementing depth vs. stencil sampling
depending on the texture swizzle.
This commit is contained in:
ReinUsesLisp 2020-01-26 17:11:49 -03:00
parent 05df4a8c94
commit d17dfa6104
1 changed files with 27 additions and 4 deletions
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31
src/video_core/renderer_opengl/gl_texture_cache.cpp
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@ -176,6 +176,19 @@ GLint GetSwizzleSource(SwizzleSource source) {
return GL_NONE;
}
GLenum GetComponent(PixelFormat format, bool is_first) {
switch (format) {
case PixelFormat::Z24S8:
case PixelFormat::Z32FS8:
return is_first ? GL_DEPTH_COMPONENT : GL_STENCIL_INDEX;
case PixelFormat::S8Z24:
return is_first ? GL_STENCIL_INDEX : GL_DEPTH_COMPONENT;
default:
UNREACHABLE();
return GL_DEPTH_COMPONENT;
}
}
void ApplyTextureDefaults(const SurfaceParams& params, GLuint texture) {
if (params.IsBuffer()) {
return;
@ -416,11 +429,21 @@ void CachedSurfaceView::ApplySwizzle(SwizzleSource x_source, SwizzleSource y_sou
if (new_swizzle == swizzle)
return;
swizzle = new_swizzle;
const std::array<GLint, 4> gl_swizzle = {GetSwizzleSource(x_source), GetSwizzleSource(y_source),
GetSwizzleSource(z_source),
GetSwizzleSource(w_source)};
const std::array gl_swizzle = {GetSwizzleSource(x_source), GetSwizzleSource(y_source),
GetSwizzleSource(z_source), GetSwizzleSource(w_source)};
const GLuint handle = GetTexture();
glTextureParameteriv(handle, GL_TEXTURE_SWIZZLE_RGBA, gl_swizzle.data());
const PixelFormat format = surface.GetSurfaceParams().pixel_format;
switch (format) {
case PixelFormat::Z24S8:
case PixelFormat::Z32FS8:
case PixelFormat::S8Z24:
glTextureParameteri(handle, GL_DEPTH_STENCIL_TEXTURE_MODE,
GetComponent(format, x_source == SwizzleSource::R));
break;
default:
glTextureParameteriv(handle, GL_TEXTURE_SWIZZLE_RGBA, gl_swizzle.data());
break;
}
}
OGLTextureView CachedSurfaceView::CreateTextureView() const {