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dma-buf: Mark DMA-BUF textures as paint-only
Reading pixels directly from a texture imported from a DMA-BUF EGLImage may result compressed textures to be transferred into non-compressed texture. This may have side effects causing it to be rendered incorrectly in subsequent paints. Avoid this by passing the no-get-data flag to the texture creator function, eventually causing mutter to use an intermediate offscreen framebuffer when reading pixels from such textures. https://bugs.freedesktop.org/show_bug.cgi?id=111140 https://gitlab.freedesktop.org/xorg/xserver/issues/545 https://gitlab.gnome.org/GNOME/mutter/merge_requests/687
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@ -1920,7 +1920,7 @@ copy_shared_framebuffer_primary_gpu (CoglOnscreen *onscre
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return FALSE;
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}
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flags = COGL_EGL_IMAGE_FLAG_NONE;
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flags = COGL_EGL_IMAGE_FLAG_NO_GET_DATA;
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cogl_tex = cogl_egl_texture_2d_new_from_image (cogl_context,
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dumb_fb->width,
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dumb_fb->height,
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@ -135,7 +135,7 @@ meta_wayland_dma_buf_realize_texture (MetaWaylandBuffer *buffer,
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if (egl_image == EGL_NO_IMAGE_KHR)
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return FALSE;
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flags = COGL_EGL_IMAGE_FLAG_NONE;
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flags = COGL_EGL_IMAGE_FLAG_NO_GET_DATA;
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texture = cogl_egl_texture_2d_new_from_image (cogl_context,
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dma_buf->width,
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dma_buf->height,
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