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Possible workaround for an Intel driver bug with readable depth buffers

Browse Source 
https://github.com/love2d/love/issues/1592
This commit is contained in:
Alex Szpakowski
2020-07-11 17:21:26 -03:00
parent 50eeed7bb1
commit d60d8867f4
1 changed files with 10 additions and 0 deletions
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src/modules/graphics/opengl/Canvas.cpp
+10
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@@ -39,6 +39,11 @@ static GLenum createFBO(GLuint &framebuffer, TextureType texType, PixelFormat fo
glGenFramebuffers(1, &framebuffer);
gl.bindFramebuffer(OpenGL::FRAMEBUFFER_ALL, framebuffer);
// Might work around an Intel driver bug: https://github.com/love2d/love/issues/1592
bool current_srgb = gl.isStateEnabled(OpenGL::ENABLE_FRAMEBUFFER_SRGB);
if (current_srgb && isPixelFormatDepthStencil(format))
gl.setEnableState(OpenGL::ENABLE_FRAMEBUFFER_SRGB, false);
if (texture != 0)
{
if (isPixelFormatDepthStencil(format) && (GLAD_ES_VERSION_3_0 || !GLAD_ES_VERSION_2_0))
@@ -104,6 +109,11 @@ static GLenum createFBO(GLuint &framebuffer, TextureType texType, PixelFormat fo
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
gl.bindFramebuffer(OpenGL::FRAMEBUFFER_ALL, current_fbo);
// Restore sRGB state if we turned it off above.
if (current_srgb && isPixelFormatDepthStencil(format))
gl.setEnableState(OpenGL::ENABLE_FRAMEBUFFER_SRGB, current_srgb);
return status;
}