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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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5
client/renderers/EGL/shader.h
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@@ -97,10 +97,11 @@ bool egl_shaderInit(EGL_Shader ** shader);
void egl_shaderFree(EGL_Shader ** shader);
bool egl_shaderLoad(EGL_Shader * model, const char * vertex_file,
const char * fragment_file);
const char * fragment_file, bool useDMA);
bool egl_shaderCompile(EGL_Shader * model, const char * vertex_code,
size_t vertex_size, const char * fragment_code, size_t fragment_size);
size_t vertex_size, const char * fragment_code, size_t fragment_size,
bool useDMA);
void egl_shaderSetUniforms(EGL_Shader * shader, EGL_Uniform * uniforms,
int count);