looking-glass/client/renderers/EGL/shader/downscale_linear.frag

#version 300 es
#extension GL_OES_EGL_image_external_essl3 : enable

precision highp float;

in  vec2  fragCoord;
out vec4  fragColor;

uniform sampler2D sampler1;

void main()
{
  fragColor = texture(sampler1, fragCoord);
}
[client] egl: add linear downscale filter shader 2021-08-14 00:42:35 +00:00			`#version 300 es`
[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 2023-03-08 22:20:01 +00:00			`#extension GL_OES_EGL_image_external_essl3 : enable`

[client] egl: switch from `mediump` to `highp` This fixes a rounding issue on certain hardware (NVidia) which actually implement mediump as half precision (16-bit) float. It's safe to assume `highp` is available as if the GPU does not support it, then the shader compiler will try to find a lower precision that is supported by the GPU 2023-03-05 03:10:21 +00:00			`precision highp float;`
[client] egl: add linear downscale filter shader 2021-08-14 00:42:35 +00:00
			`in vec2 fragCoord;`
			`out vec4 fragColor;`

[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 2023-03-08 22:20:01 +00:00			`uniform sampler2D sampler1;`
[client] egl: add linear downscale filter shader 2021-08-14 00:42:35 +00:00
			`void main()`
			`{`
[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 2023-03-08 22:20:01 +00:00			`fragColor = texture(sampler1, fragCoord);`
[client] egl: add linear downscale filter shader 2021-08-14 00:42:35 +00:00			`}`