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[client] egl: switch to using GL_TEXTURE_EXTERNAL_OES for DMABUF

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According to Erik @ NVidia the open source NVidia driver will not
create a EGLImage from a DMABUF if the target is not
GL_TEXTURE_EXTERNAL_OES. This change set converts the dmabuf texture
from GL_TEXTURE_2D to GL_TEXTURE_EXTERNAL_OES and at runtime performs a
global search & replace on fragment shaders as needed to remain
compatible, replacing `sampler2D` with `samplerExternalOES`.

Ref: https://github.com/NVIDIA/open-gpu-kernel-modules/discussions/243#discussioncomment-3283415
This commit is contained in:
Geoffrey McRae
2023-03-09 09:20:01 +11:00
parent bbc9204bfe
commit b4b4a37b2b
27 changed files with 372 additions and 180 deletions
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client/renderers/EGL/texture_buffer.h
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@@ -48,6 +48,7 @@ void egl_texBufferFree(EGL_Texture * texture_);
bool egl_texBufferSetup(EGL_Texture * texture_, const EGL_TexSetup * setup);
EGL_TexStatus egl_texBufferProcess(EGL_Texture * texture_);
EGL_TexStatus egl_texBufferGet(EGL_Texture * texture_, GLuint * tex);
EGL_TexStatus egl_texBufferBind(EGL_Texture * texture_);
bool egl_texBufferStreamInit(EGL_Texture ** texture_, EGL_TexType type,
EGLDisplay * display);