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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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59
client/renderers/EGL/texture_dmabuf.c
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@@ -46,12 +46,26 @@ EGL_TextureOps EGL_TextureDMABUF;
// internal functions
static void egl_texDMABUFCleanup(TexDMABUF * this)
static void egl_texDMABUFCleanup(EGL_Texture * texture)
{
TextureBuffer * parent = UPCAST(TextureBuffer, texture);
TexDMABUF * this = UPCAST(TexDMABUF , parent);
struct FdImage * image;
vector_forEachRef(image, &this->images)
g_egl_dynProcs.eglDestroyImage(this->display, image->image);
vector_clear(&this->images);
egl_texUtilFreeBuffers(parent->buf, parent->texCount);
if (parent->tex[0])
glDeleteTextures(parent->texCount, parent->tex);
if (parent->sync)
{
glDeleteSync(parent->sync);
parent->sync = 0;
}
}
// dmabuf functions
@@ -92,7 +106,7 @@ static void egl_texDMABUFFree(EGL_Texture * texture)
TextureBuffer * parent = UPCAST(TextureBuffer, texture);
TexDMABUF * this = UPCAST(TexDMABUF , parent);
egl_texDMABUFCleanup(this);
egl_texDMABUFCleanup(texture);
vector_destroy(&this->images);
egl_texBufferFree(&parent->base);
@@ -102,11 +116,27 @@ static void egl_texDMABUFFree(EGL_Texture * texture)
static bool egl_texDMABUFSetup(EGL_Texture * texture, const EGL_TexSetup * setup)
{
TextureBuffer * parent = UPCAST(TextureBuffer, texture);
TexDMABUF * this = UPCAST(TexDMABUF , parent);
egl_texDMABUFCleanup(this);
egl_texDMABUFCleanup(texture);
return egl_texBufferSetup(&parent->base, setup);
glGenTextures(parent->texCount, parent->tex);
for(int i = 0; i < parent->texCount; ++i)
{
glBindTexture(GL_TEXTURE_EXTERNAL_OES, parent->tex[i]);
glTexImage2D(GL_TEXTURE_EXTERNAL_OES,
0,
texture->format.intFormat,
texture->format.width,
texture->format.height,
0,
texture->format.format,
texture->format.dataType,
NULL);
}
glBindTexture(GL_TEXTURE_EXTERNAL_OES, 0);
parent->rIndex = -1;
return true;
}
static bool egl_texDMABUFUpdate(EGL_Texture * texture,
@@ -173,8 +203,8 @@ static bool egl_texDMABUFUpdate(EGL_Texture * texture,
INTERLOCKED_SECTION(parent->copyLock,
{
glBindTexture(GL_TEXTURE_2D, parent->tex[parent->bufIndex]);
g_egl_dynProcs.glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, parent->tex[parent->bufIndex]);
g_egl_dynProcs.glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image);
if (parent->sync)
glDeleteSync(parent->sync);
@@ -238,6 +268,18 @@ static EGL_TexStatus egl_texDMABUFGet(EGL_Texture * texture, GLuint * tex)
return EGL_TEX_STATUS_OK;
}
static EGL_TexStatus egl_texDMABUFBind(EGL_Texture * texture)
{
GLuint tex;
EGL_TexStatus status;
if ((status = egl_texDMABUFGet(texture, &tex)) != EGL_TEX_STATUS_OK)
return status;
glBindTexture(GL_TEXTURE_EXTERNAL_OES, tex);
return EGL_TEX_STATUS_OK;
}
EGL_TextureOps EGL_TextureDMABUF =
{
.init = egl_texDMABUFInit,
@@ -245,5 +287,6 @@ EGL_TextureOps EGL_TextureDMABUF =
.setup = egl_texDMABUFSetup,
.update = egl_texDMABUFUpdate,
.process = egl_texDMABUFProcess,
.get = egl_texDMABUFGet
.get = egl_texDMABUFGet,
.bind = egl_texDMABUFBind
};