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Set EGL_IMAGE_PRESERVED_KHR=EGL_TRUE on our EGLImages

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They're mapped read-only and may be saved internally as reference frames,
so they must not be modified by the EGL implementation.
This commit is contained in:
Cameron Gutman 2023-09-26 02:38:46 -05:00
commit f420dc740a
2 changed files with 8 additions and 6 deletions
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7
app/streaming/video/ffmpeg-renderers/drm.cpp
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@ -1188,14 +1188,15 @@ ssize_t DrmRenderer::exportEGLImages(AVFrame *frame, EGLDisplay dpy,
// DRM requires composed layers rather than separate layers per plane
SDL_assert(drmFrame->nb_layers == 1);
// Max 32 attributes (1 key + 1 value for each)
const int MAX_ATTRIB_COUNT = 32 * 2;
// Max 33 attributes (1 key + 1 value for each)
const int MAX_ATTRIB_COUNT = 33 * 2;
EGLAttrib attribs[MAX_ATTRIB_COUNT] = {
EGL_LINUX_DRM_FOURCC_EXT, (EGLAttrib)drmFrame->layers[0].format,
EGL_WIDTH, frame->width,
EGL_HEIGHT, frame->height,
EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
};
int attribIndex = 6;
int attribIndex = 8;
for (int i = 0; i < drmFrame->layers[0].nb_planes; ++i) {
const auto &plane = drmFrame->layers[0].planes[i];