kas1e
commented
2 years ago Hm, i set to dump all the shaders to log (LIBGL_DBGSHADERCONV to 15), and that is what i have:
#version 110
#ifdef GL_ES
#if defined(GL_FRAGMENT_PRECISION_HIGH) && GL_FRAGMENT_PRECISION_HIGH == 1
precision highp float;
#else
precision mediump float;
#endif
#else
#define highp
#define mediump
#define lowp
#endif
attribute vec4 position;
attribute vec2 texCoordIn;
attribute vec4 blendColorIn;
uniform mat4 projection;
varying vec2 texCoord;
varying vec4 blendColor;
void main(void) {
texCoord = texCoordIn;
blendColor = blendColorIn;
gl_Position = projection * position;
}And new shadersource are:
#version 100
precision highp float;
precision highp int;
#ifdef GL_ES
#if defined(GL_FRAGMENT_PRECISION_HIGH) && GL_FRAGMENT_PRECISION_HIGH == 1
precision highp float;
#else
precision mediump float;
#endif
attribute vec4 position;
attribute vec2 texCoordIn;
attribute vec4 blendColorIn;
uniform mat4 projection;
varying vec2 texCoord;
varying vec4 blendColor;
void main(void) {
texCoord = texCoordIn;
blendColor = blendColorIn;
gl_Position = projection * position;
}Not sure that i understand what happens, at least i can see that original have all correct ifdefs, then, second shader (dunno by which created ? By gl4es ? ) didn't have all those ifs , so of course fails. Through as i remember all shaders created by gl4es should have gl4es_ marks at beginning of shader's calls, but this one looks strange .. Isn't it gl4es convert the original shader to something before making "gl4es" ones?
ptitSeb
arrowgent
Hi ptitSeb !
Today tried to port ScummVM over gl4es, and have some interesting issues: All initialization happens to be fine, and then:
An interesting moment is that when i build it under MiniGL ( OpenGL 1.3) , it didn't ask for any shaders, and runs fine. But once i just switch to gl4es (without any changes, just as i do all the time), it starts to try to compile some shaders from their internal ScummVM's code.
I think that maybe if they find that OpenGL is anything more than 2.0, then they trying to compile some default base shader, which by some luck didn't work (maybe because they put version 100 or something ? but then, GL4ES should make its own shaders, right ?)
If you have any ideas, feel free plz :) Or at least from where start to debug those things. Thanks!