[client] egl: switch to using GL_TEXTURE_EXTERNAL_OES for DMABUF

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

View File

@@ -46,6 +46,7 @@ struct DesktopShader
EGL_Shader * shader;
GLint uTransform;
GLint uDesktopSize;
GLint uSamplerType;
GLint uScaleAlgo;
GLint uNVGain;
GLint uCBMode;
@@ -57,7 +58,7 @@ struct EGL_Desktop
EGLDisplay * display;
EGL_Texture * texture;
struct DesktopShader shader;
struct DesktopShader dmaShader, shader;
EGL_DesktopRects * mesh;
CountedBuffer * matrix;
@@ -92,7 +93,8 @@ void toggleNV(int key, void * opaque);
static bool egl_initDesktopShader(
struct DesktopShader * shader,
const char * vertex_code , size_t vertex_size,
const char * fragment_code, size_t fragment_size
const char * fragment_code, size_t fragment_size,
bool useDMA
)
{
if (!egl_shaderInit(&shader->shader))
@@ -100,7 +102,8 @@ static bool egl_initDesktopShader(
if (!egl_shaderCompile(shader->shader,
vertex_code , vertex_size,
fragment_code, fragment_size))
fragment_code, fragment_size,
useDMA))
{
return false;
}
@@ -135,15 +138,6 @@ bool egl_desktopInit(EGL * egl, EGL_Desktop ** desktop_, EGLDisplay * display,
return false;
}
if (!egl_initDesktopShader(
&desktop->shader,
b_shader_desktop_vert , b_shader_desktop_vert_size,
b_shader_desktop_rgb_frag, b_shader_desktop_rgb_frag_size))
{
DEBUG_ERROR("Failed to initialize the generic desktop shader");
return false;
}
if (!egl_desktopRectsInit(&desktop->mesh, maxRects))
{
DEBUG_ERROR("Failed to initialize the desktop mesh");
@@ -157,6 +151,27 @@ bool egl_desktopInit(EGL * egl, EGL_Desktop ** desktop_, EGLDisplay * display,
return false;
}
if (!egl_initDesktopShader(
&desktop->shader,
b_shader_desktop_vert , b_shader_desktop_vert_size,
b_shader_desktop_rgb_frag, b_shader_desktop_rgb_frag_size,
false))
{
DEBUG_ERROR("Failed to initialize the desktop shader");
return false;
}
if (useDMA)
if (!egl_initDesktopShader(
&desktop->dmaShader,
b_shader_desktop_vert , b_shader_desktop_vert_size,
b_shader_desktop_rgb_frag, b_shader_desktop_rgb_frag_size,
true))
{
DEBUG_ERROR("Failed to initialize the desktop DMA shader");
return false;
}
app_registerKeybind(0, 'N', toggleNV, desktop,
"Toggle night vision mode");
@@ -205,11 +220,12 @@ void egl_desktopFree(EGL_Desktop ** desktop)
if (!*desktop)
return;
egl_textureFree (&(*desktop)->texture );
egl_textureFree (&(*desktop)->spiceTexture );
egl_shaderFree (&(*desktop)->shader.shader);
egl_desktopRectsFree(&(*desktop)->mesh );
countedBufferRelease(&(*desktop)->matrix );
egl_textureFree (&(*desktop)->texture );
egl_textureFree (&(*desktop)->spiceTexture );
egl_shaderFree (&(*desktop)->shader .shader);
egl_shaderFree (&(*desktop)->dmaShader.shader);
egl_desktopRectsFree(&(*desktop)->mesh );
countedBufferRelease(&(*desktop)->matrix );
egl_postProcessFree(&(*desktop)->pp);
@@ -399,18 +415,17 @@ bool egl_desktopRender(EGL_Desktop * desktop, unsigned int outputWidth,
if (atomic_exchange(&desktop->processFrame, false) ||
egl_postProcessConfigModified(desktop->pp))
egl_postProcessRun(desktop->pp, tex, desktop->mesh,
width, height, outputWidth, outputHeight);
width, height, outputWidth, outputHeight, desktop->useDMA);
unsigned int finalSizeX, finalSizeY;
GLuint texture = egl_postProcessGetOutput(desktop->pp,
EGL_Texture * texture = egl_postProcessGetOutput(desktop->pp,
&finalSizeX, &finalSizeY);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
egl_resetViewport(desktop->egl);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glBindSampler(0, tex->sampler);
egl_textureBind(texture);
if (finalSizeX > width || finalSizeY > height)
scaleType = EGL_DESKTOP_DOWNSCALE;
@@ -435,7 +450,10 @@ bool egl_desktopRender(EGL_Desktop * desktop, unsigned int outputWidth,
scaleAlgo = desktop->scaleAlgo;
}
const struct DesktopShader * shader = &desktop->shader;
const struct DesktopShader * shader =
desktop->useDMA && texture == desktop->texture ?
&desktop->dmaShader : &desktop->shader;
EGL_Uniform uniforms[] =
{
{