QOpenGLShaderProgram not working when I replace QGLShaderProgram...

drhalftone

I'm trying to update my code to replace the QGLxxxx deprecated classes with the new QOpenGLxxxx classes. So I'm running into a problem with a geometry shader that has the following code:

@#version 110

uniform float qt_delta; // USER DEFINED MAXIMUM DISTANCE THRESHOLD
uniform int qt_mode;

varying in float qt_magnitude[]; // VECTOR HOLDING THE MAGNITUDE VALUE FROM THE VERTEX SHADER
varying float qt_albedo; // SCALAR HOLDING THE MAGNITUDE VALUE FOR THE FRAGMENT SHADER

varying in vec3 qt_normal[]; // VECTOR HOLDING THE VERTEX NORMALS
varying vec3 qt_normalVector; // VECTOR HOLDING THE UNIT LENGTH VERTEX NORMAL

void main()
{
// CALCULATE DISTANCE BETWEEN EACH VERTEX, AND IF THEY ARE ALL
// INSIDE THE MAXIMUM DISTANCE THRESHOLD, THEN EMIT THE VERTICES
// TO THE FRAGMENT SHADER FOR DISPLAY. OTHERWISE, CULL THEM.
vec4 delta = gl_PositionIn[1] - gl_PositionIn[0];
if (length(delta) < qt_delta){
delta = gl_PositionIn[2] - gl_PositionIn[0];
if (length(delta) < qt_delta){
delta = gl_PositionIn[2] - gl_PositionIn[1];
if (length(delta) < qt_delta){

            // EMIT THE FIRST VERTEX ALONG WITH ITS ALBEDO (TEXTURE)
            if (qt_mode == 1){
                qt_normalVector = qt_normal[0];
            }
            qt_albedo = qt_magnitude[0];
            gl_FrontColor = gl_FrontColorIn[0];
            gl_TexCoord[0] = gl_TexCoordIn[0][0];
            gl_Position = gl_PositionIn[0];
            EmitVertex();

            // EMIT THE SECOND VERTEX ALONG WITH ITS ALBEDO (TEXTURE)
            if (qt_mode == 1){
                qt_normalVector = qt_normal[1];
            }
            qt_albedo = qt_magnitude[1];
            gl_FrontColor = gl_FrontColorIn[1];
            gl_TexCoord[0] = gl_TexCoordIn[1][0];
            gl_Position = gl_PositionIn[1];
            EmitVertex();

            // EMIT THE THIRD VERTEX ALONG WITH ITS ALBEDO (TEXTURE)
            if (qt_mode == 1){
                qt_normalVector = qt_normal[2];
            }
            qt_albedo = qt_magnitude[2];
            gl_FrontColor = gl_FrontColorIn[2];
            gl_TexCoord[0] = gl_TexCoordIn[2][0];
            gl_Position = gl_PositionIn[2];
            EmitVertex();
        }
    }
}
EndPrimitive();

}
@

This used to work just fine, but with the QOpenGLShaderProgram class, I now get the following shader compiling errors when I try to compile the shaders in the application:
@QOpenGLShader::compile(Geometry): ERROR: 0:9: Invalid qualifiers 'in' in global variable context
ERROR: 0:12: Invalid qualifiers 'in' in global variable context
ERROR: 0:20: Use of undeclared identifier 'gl_PositionIn'
@
plus a very long list of additional errors. I noticed there was a bug report about QOpenGLShaderProgram not working correctly, but this looks like an error related to the compiling of the GLSL, not the code itself. So any help would be appreciated.

agocs

First, the minimum version for a geometry shader is 150.
Second, "varying in" is invalid. Just use "in".

drhalftone

So here is the error message I'm getting from the GLSL compiler:

@"LAUScanData::allocateBuffer() 0" 494 656
QOpenGLShader::compile(Geometry): ERROR: 0:1: '' : version '150' is not supported

*** Problematic Geometry shader source code ***
#version 150
#define lowp
#define mediump
#define highp

uniform float qt_delta; // USER DEFINED MAXIMUM DISTANCE THRESHOLD
uniform int qt_mode;
@

So I removed the version number altogether and get:

@Starting /Users/dllau/Developer/build-AppleTest-Desktop_Qt_5_2_1_clang_64-Debug/AppleTest.app/Contents/MacOS/AppleTest...
"LAUScanData::allocateBuffer() 0" 494 656
QOpenGLShader::compile(Geometry): ERROR: 0:9: Invalid qualifiers 'in' in global variable context
ERROR: 0:12: Invalid qualifiers 'in' in global variable context
ERROR: 0:20: Use of undeclared identifier 'gl_PositionIn'
ERROR: 0:20: Use of undeclared identifier 'gl_PositionIn'
@

Any suggestions?