No idea?
Has anybody run the app?
Thanks
Agustin Rubio Mingorance wrote:
> Michel Dänzer wrote:
>
>> On Mon, 2007-04-09 at 16:44 +0200, Agustin Rubio Mingorance wrote:
>>
>>
>>> I'm writting a 2D-app with double buffering. I use the env variable
>>> vblank_mode=3
>>> for syncing to vblank and avoiding tearing. The monitor VertRefresh is
>>> set at 60 Hz.
>>>
>>> I'm using Xorg 7.1.1 + mesa 6.51 + i810 1.7.2
>>>
>>>
>> A lot of improvements have been made in this area recently. I recommend
>> at least Mesa 6.5.2 or git and i915 DRM 1.6 or newer, possibly also a
>> newer version of xf86-video-intel.
>>
>>
>>
>>
> Hi,
>
> I still have the problem with the new versions of Mesa and DRM.
>
> I have noticed that the problem only appears in apps where I use textures.
>
> I send a example below that get 27 FPS, no matter what value vblank_mode
> has (vert refresh is 60 Hz).
>
> ¿Any idea?
>
>
> Thanks in advance
>
>
> //main.cpp
> extern "C"{
> #include <GL/gl.h>
> #include <GL/glut.h>
> }
>
> #include <iostream>
>
> int fps_time = 0;
> int fps_timebase = 0;
> int frame = 0;
> int sleep_time = 0;
>
> #define TEXT_NUM 1
> #define TEXT_SIZE 256
> GLuint textures[TEXT_NUM];
>
> void initGL (int argc, char* argv[])
> {
> unsigned char* bitmap = new unsigned char [TEXT_SIZE * TEXT_SIZE * 3];
>
> //Color
> for (int i = 0; i < TEXT_SIZE * TEXT_SIZE * 3; i += 3){
> bitmap[i] = (i * 4) % 256;
> bitmap[i + 1] = 0;
> bitmap[i + 2] = 0;
>
> glGenTextures (TEXT_NUM , textures);
> glEnable (GL_TEXTURE_2D);
>
> for (int i = 0; i < TEXT_NUM; i++){
> glBindTexture (GL_TEXTURE_2D, textures[i]);
>
> glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP);
> glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP);
> glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
> glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
>
>
> glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, TEXT_SIZE, TEXT_SIZE,
> 0, GL_RGB, GL_UNSIGNED_BYTE, bitmap);
> }
> delete[] bitmap;
> }
>
> void
> keyPressed(unsigned char key, int x, int y)
> {
> if (key == 'q') {
> exit (0);
> }
> }
>
> void
> drawGLScene()
> {
>
> frame++;
> fps_time = glutGet (GLUT_ELAPSED_TIME);
> if((fps_time - fps_timebase) > 1000){
> std::cout << "FPS:" << (1000 * frame) / (fps_time - fps_timebase)
> << std::endl;
> frame = 0;
> fps_timebase = fps_time;
> }
>
>
>
> float w = 200;
> float h = 75;
> float x = 0.0;
> for (int i = 0; i < 4; i++){
> float y = 0.0;
> for (int j = 0; j < 8; j++){
> glBindTexture (GL_TEXTURE_2D, textures[(j * 4) % TEXT_NUM]);
> glBegin (GL_QUADS);
> glVertex3f (x, y, -5);
> glTexCoord2f (0.0, 0.0);
> glVertex3f (x + w, y, -5);
> glTexCoord2f (1.0, 0.0);
> glVertex3f (x +w, y +h, -5);
> glTexCoord2f (1.0, 1.0);
> glVertex3f (x, y + h, -5);
> glTexCoord2f (0.0, 1.0);
> glEnd();
> y += h;
> }
> x += w;
> }
>
> glutSwapBuffers();
> }
>
> void
> idle()
> {
> glutPostRedisplay ();
> }
>
>
> int
> main (int argc, char* argv[])
> {
> glutInit (&argc, argv);
> glutInitDisplayMode (GLUT_RGBA| GLUT_DOUBLE );
> glutInitWindowSize (800, 600);
> glutInitWindowPosition (100, 100);
> glutCreateWindow ("");
>
> glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
> glMatrixMode (GL_PROJECTION);
> glLoadIdentity ();
>
> glOrtho (0, 800, 0, 600, 0, 500);
> glMatrixMode (GL_MODELVIEW);
>
> glutSetCursor(GLUT_CURSOR_NONE);
> glShadeModel (GL_FLAT);
> glDisable (GL_DITHER);
> glEnable (GL_BLEND);
> glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
>
> glDisable(GL_DITHER);
>
> initGL (argc, argv);
>
> glutIdleFunc (idle);
> glutReshapeFunc (0);
> glutKeyboardFunc (keyPressed);
> glutDisplayFunc (drawGLScene);
> glutMainLoop ();
>
> return 0;
> }
>
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