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GLCache: Simplify the logic to copy from one texture to another in BlitTextures.
We now use glCopyImageSubData, this should avoid errors with trying to attach a compressed texture as a framebuffer's color attachment and then blitting to it. Maybe in the future we can change this to glCopyTextureSubImage which only requires GL_ARB_direct_state_access.
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@ -169,60 +169,10 @@ static void AllocateSurfaceTexture(GLuint texture, const FormatTuple& format_tup
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static bool BlitTextures(GLuint src_tex, const MathUtil::Rectangle<u32>& src_rect, GLuint dst_tex,
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const MathUtil::Rectangle<u32>& dst_rect, SurfaceType type,
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GLuint read_fb_handle, GLuint draw_fb_handle) {
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OpenGLState state = OpenGLState::GetCurState();
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OpenGLState prev_state = state;
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SCOPE_EXIT({ prev_state.Apply(); });
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// Make sure textures aren't bound to texture units, since going to bind them to framebuffer
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// components
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state.ResetTexture(src_tex);
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state.ResetTexture(dst_tex);
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state.draw.read_framebuffer = read_fb_handle;
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state.draw.draw_framebuffer = draw_fb_handle;
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state.Apply();
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u32 buffers = 0;
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if (type == SurfaceType::ColorTexture) {
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, src_tex,
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0);
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0,
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0);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, dst_tex,
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0);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0,
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0);
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buffers = GL_COLOR_BUFFER_BIT;
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} else if (type == SurfaceType::Depth) {
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, src_tex, 0);
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, dst_tex, 0);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
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buffers = GL_DEPTH_BUFFER_BIT;
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} else if (type == SurfaceType::DepthStencil) {
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D,
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src_tex, 0);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0);
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glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_TEXTURE_2D,
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dst_tex, 0);
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buffers = GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT;
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}
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glBlitFramebuffer(src_rect.left, src_rect.bottom, src_rect.right, src_rect.top, dst_rect.left,
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dst_rect.bottom, dst_rect.right, dst_rect.top, buffers,
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buffers == GL_COLOR_BUFFER_BIT ? GL_LINEAR : GL_NEAREST);
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glCopyImageSubData(src_tex, GL_TEXTURE_2D, 0, src_rect.left, src_rect.bottom, 0, dst_tex,
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GL_TEXTURE_2D, 0, dst_rect.left, dst_rect.bottom, 0, src_rect.GetWidth(),
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src_rect.GetHeight(), 0);
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return true;
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}
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