Comment # 13
on bug 101325
from Julien Isorce
apitrace dump:
94 glShaderSource(shader = 2, count = 2, string = {"#version 150
#define PLATFORM_USES_ES2 0
#define PLATFORM_LINUX 1
", "
#if PLATFORM_USES_ES2
precision highp float;
#else
// #version 120 at the beginning is added in
FSlateOpenGLShader::CompileShader()
#extension GL_EXT_gpu_shader4 : enable
#endif
varying vec2 textureCoordinate;
uniform sampler2D SplashTexture;
void main()
{
// OpenGL has 0,0 the \"math\" way
vec2 tc = vec2(textureCoordinate.s, 1.0-textureCoordinate.t);
gl_FragColor = texture2D(SplashTexture, tc);
}"}, length = NULL)
So it does not look that GL_EXT_gpu_shader4 is really used.
Also I wonder if you can configure UE4Editor to use egl/gles2 and see if it
still hangs.
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