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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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21
client/renderers/EGL/shader/ffx_fsr1_easu.frag
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@@ -1,4 +1,6 @@
#version 300 es
#extension GL_OES_EGL_image_external_essl3 : enable
precision highp float;
#include "compat.h"
@@ -6,7 +8,7 @@ precision highp float;
in vec2 fragCoord;
out vec4 fragColor;
uniform sampler2D texture;
uniform sampler2D sampler1;
uniform vec2 uOutRes;
uniform uvec4 uConsts[4];
@@ -18,20 +20,9 @@ uniform uvec4 uConsts[4];
#define FSR_EASU_F 1
vec4 _textureGather(sampler2D tex, vec2 uv, int comp)
{
vec2 res = vec2(textureSize(tex, 0));
ivec2 p = ivec2((uv * res) - 0.5f);
vec4 c0 = texelFetchOffset(tex, p, 0, ivec2(0,1));
vec4 c1 = texelFetchOffset(tex, p, 0, ivec2(1,1));
vec4 c2 = texelFetchOffset(tex, p, 0, ivec2(1,0));
vec4 c3 = texelFetchOffset(tex, p, 0, ivec2(0,0));
return vec4(c0[comp], c1[comp], c2[comp],c3[comp]);
}
AF4 FsrEasuRF(AF2 p){return AF4(_textureGather(texture, p, 0));}
AF4 FsrEasuGF(AF2 p){return AF4(_textureGather(texture, p, 1));}
AF4 FsrEasuBF(AF2 p){return AF4(_textureGather(texture, p, 2));}
AF4 FsrEasuRF(AF2 p){return AF4(textureGather(sampler1, p, 0));}
AF4 FsrEasuGF(AF2 p){return AF4(textureGather(sampler1, p, 1));}
AF4 FsrEasuBF(AF2 p){return AF4(textureGather(sampler1, p, 2));}
#include "ffx_fsr1.h"