No mesh rendered when changing the platform.

[hesheit]

Sorry, I am a newbie. I have a problem to render a certain mesh in Window 7/ATI Radeon HD 5700 Series.

Previously, I can perfectly render it in Mac OS X/Intel Graphics HD 3000. Everything works fine. But after I change to Window 7/ATI Radeon HD 5700 Series, The viewport renders only the background (no mesh rendered). I use the same codes and same shaders, and ,also, already change the corresponding path.

Opengl version : 3.2
GLSL version : 1.5
Qt : 5.1

This is my own vertex shader :
@#version 150

in vec3 vertexPosition;
in vec2 vertexTexCoord;
in vec3 vertexNormal;

out vec2 TexCoord;
out vec3 Normal_eye;
out vec4 vPos_to_lightPos_eye;
out vec4 vPos_to_CamPos_eye;

uniform mat4 ModelMatrix;
uniform mat4 ViewMatrix;
uniform mat4 ProjMatrix;
uniform vec3 LightPos_0;

void main()
{
vec4 Position_model = vec4(vertexPosition, 1.0);
vec4 Normal_model = vec4(vertexNormal, 1.0);
vec4 lightPos = vec4(LightPos_0,1.0);

vec4 vPos_eye = ViewMatrix * ModelMatrix * Position_model;
vec4 lightPos_eye = ViewMatrix * lightPos;

// Compute gl_NormalMatrix
mat3 ModelMatrix3x3 = mat3(ModelMatrix);
mat3 ViewMatrix3x3 = mat3(ViewMatrix);
mat3 NormalMatrix = transpose(inverse(mat3(ViewMatrix) * mat3(ModelMatrix)));

// Output
Normal_eye = NormalMatrix * Normal_model.xyz;
vPos_to_lightPos_eye = lightPos_eye - vPos_eye;
vPos_to_CamPos_eye = -vPos_eye;
TexCoord = vertexTexCoord;
gl_Position = ProjMatrix*ViewMatrix*ModelMatrix * Position_model;

}
@

And this is fragment shader:
@#version 150

in vec3 Normal_eye;
in vec2 TexCoord;
in vec4 vPos_to_lightPos_eye;
in vec4 vPos_to_CamPos_eye;

out vec4 OutColor;

uniform sampler2D sampler1;

uniform vec4 LightColor_0; // Cl
uniform vec4 AmbientColor; // Ca
uniform vec4 SpecularColor; // Cp
uniform float PhongExponent; // p

void main()
{
vec4 DiffuseColor = texture(sampler1,TexCoord); // Cr = Diffuse Reflectance

vec3 normalized_Normal_eye = normalize(Normal_eye.xyz);
vec3 normalized_vPos_to_lightPos_eye = normalize(vPos_to_lightPos_eye.xyz);
vec3 normalized_vPos_to_CamPos_eye = normalize(vPos_to_CamPos_eye.xyz);
vec3 h = normalize(normalized_vPos_to_lightPos_eye + normalized_vPos_to_CamPos_eye);

float DiffuseTerm = max(0.0, dot(normalized_Normal_eye, normalized_vPos_to_lightPos_eye));

float SpecularTerm = pow(max(0.0, dot(normalized_Normal_eye,h)),PhongExponent);

OutColor = DiffuseColor*(AmbientColor + LightColor_0 * DiffuseTerm) + (LightColor_0 * SpecularColor * SpecularTerm);

}
@

and this is the opengl context setup :
@// Tell Qt we will use OpenGL for this window
setSurfaceType( OpenGLSurface );

// Specify the format we wish to use
QSurfaceFormat format;
format.setDepthBufferSize( 24 );
format.setMajorVersion(3);
format.setMinorVersion(2);
format.setSamples(16);
format.setSwapBehavior(QSurfaceFormat::DoubleBuffer);
format.setProfile(QSurfaceFormat::CoreProfile);
//format.setOption( QSurfaceFormat::DebugContext );

resize( 800,600 );
setFormat( format );
create();

// Create an OpenGL context
m_context = new QOpenGLContext;
m_context->setFormat( format );
m_context->create();
m_context->makeCurrent( this );

// Check OpenGL version
qDebug("OpenGL Version = %s", glGetString(GL_VERSION));
const char *version = (char*)glGetString(GL_VERSION);
QString showVersion = QString("OpenGL Version : ") + version;
this->setTitle("ARM GL >> " + showVersion);

// Setup our scene
m_scene->setContext( m_context );
initializeGL();

// Make sure we tell OpenGL about new window sizes
connect( this, SIGNAL( widthChanged( int ) ), this, SLOT( resizeGL() ) );
connect( this, SIGNAL( heightChanged( int ) ), this, SLOT( resizeGL() ) );
resizeGL();

// This timer drives the scene updates
QTimer* timer = new QTimer( this );
connect( timer, SIGNAL( timeout() ), this, SLOT( updateScene() ) );
timer->start( 16 ); // 62.5 fps@

I do not know if it is the graphics card issue or not. I have been searching for the solution on many forums and eventually, I could not fix it.

[SGaist]

Hi,

IIRC, I saw another thread recently discussing ATI problems so it might be a bug/regression.

I think you should post your question on the interest mailing list, you'll find Qt's developers/maintainers there (this forum is more user oriented) maybe also check the "bug report system":http://bugreports.qt-project.org/issues to see if someone already report this.

[hesheit]

Sorry for posting it here and thanks for your advice.

[SGaist]

You're welcome !

No need for excuses, it's still a good question to be posted :)