Attachment 138612 Details for Bug 105901 – Test program

Test program

mip-test.c (text/x-csrc), 2.56 KB, created by Ruslan Kabatsayev on 2018-04-05 07:27:21 UTC

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Description:

Filename:

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Creator: Ruslan Kabatsayev

Created: 2018-04-05 07:27:21 UTC

Size: 2.56 KB

patch

obsolete

>#include <stdio.h>
>#define GL_GLEXT_PROTOTYPES
>#include <GL/gl.h>
>#include <GL/glext.h>
>#include <GL/glut.h>
>
>#define CHECK_GL(call) do{ \
>                           call; \
>                           const GLuint error=glGetError(); \
>                           if(error!=GL_NO_ERROR) \
>                           { \
>                               fprintf(stderr,"%s failed: error %d\n",#call,error); \
>                           } \
>                       }while(0)
>
>void debugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam)
>{
>    const char* sev="(?)";
>    switch(severity)
>    {
>    case GL_DEBUG_SEVERITY_HIGH: sev="high severity";
>    case GL_DEBUG_SEVERITY_MEDIUM: sev="medium severity";
>    case GL_DEBUG_SEVERITY_LOW: sev="low severity";
>    case GL_DEBUG_SEVERITY_NOTIFICATION: sev="notification";
>    }
>    fprintf(stderr,"debug callback called, %s: %s\n",sev,message);
>}
>
>GLuint texture;
>GLboolean init()
>{
>    CHECK_GL(glDebugMessageCallback((GLDEBUGPROC)&debugCallback,NULL));
>    CHECK_GL(glDebugMessageControl(GL_DONT_CARE,GL_DONT_CARE,GL_DONT_CARE,0,NULL,GL_TRUE));
>    CHECK_GL(glEnable(GL_DEBUG_OUTPUT));
>
>    CHECK_GL(glGenTextures(1,&texture));
>
>    return 1;
>}
>
>void display()
>{
>    static GLboolean inited;
>    if(!inited) inited=init();
>
>    CHECK_GL(glClearColor(0.5,0,0,1));
>    CHECK_GL(glClear(GL_COLOR_BUFFER_BIT));
>
>    CHECK_GL(glBindTexture(GL_TEXTURE_2D,texture));
>    static unsigned fixFilter;
>    if(++fixFilter&1)
>        CHECK_GL(glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST));
>    else
>        CHECK_GL(glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST_MIPMAP_LINEAR));
>    const unsigned char texBytes[]={255,0,0,255};
>    CHECK_GL(glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA8,2,2,0,GL_LUMINANCE,GL_UNSIGNED_BYTE,texBytes));
>
>    CHECK_GL(glEnable(GL_TEXTURE_2D));
>    glBegin(GL_QUADS);
>     glVertex2f(-1,-1); glTexCoord2f(0,0);
>     glVertex2f(-1, 1); glTexCoord2f(0,1);
>     glVertex2f( 1, 1); glTexCoord2f(1,1);
>     glVertex2f( 1,-1); glTexCoord2f(1,0);
>    CHECK_GL(glEnd());
>    glutSwapBuffers();
>}
>
>void reshape(int width, int height)
>{
>    glViewport(0, 0, width, height);
>}
>
>void keyboard(unsigned char key, int x, int y)
>{
>    glutPostRedisplay();
>}
>
>int main(int argc, char** argv)
>{
>    glutInit(&argc, argv);
>    glutInitDisplayMode (GLUT_DOUBLE|GLUT_RGB);
>    glutInitWindowSize (400, 300);
>    glutCreateWindow ("Texture test");
>    glutReshapeFunc(reshape);
>    glutDisplayFunc(display);
>    glutKeyboardFunc(keyboard);
>    glutMainLoop();
>    return 0;
>}

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Attachments on bug 105901: 138612

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