diff options
Diffstat (limited to 'TOOLS/GL-test/gltest.c')
| -rw-r--r-- | TOOLS/GL-test/gltest.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/TOOLS/GL-test/gltest.c b/TOOLS/GL-test/gltest.c new file mode 100644 index 0000000000..e8c6d33146 --- /dev/null +++ b/TOOLS/GL-test/gltest.c @@ -0,0 +1,189 @@ +// OpenGL glTexSubImage() test/benchmark prg (C) 2001. by A'rpi/ESP-team + +#include <GL/glut.h> +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <inttypes.h> + +// pixel size: 3 or 4 +#define BYTES_PP 3 + +// blit by lines (defined) or frames (not defined) +#define FAST_BLIT + +static uint32_t image_width=720; // DVD size +static uint32_t image_height=576; + +static uint32_t image_format; +static uint32_t image_bpp; +static uint32_t image_bytes; + +static uint32_t texture_width=512; +static uint32_t texture_height=512; + +static unsigned char *ImageData=NULL; + +static GLvoid resize(int x,int y){ + printf("Resize: %dx%d\n",x,y); + glViewport( 0, 0, x, y ); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, image_width, image_height, 0, -1,1); + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); +} + +float akarmi=0; + +int counter=0; +float gen_time=0; +float up_time=0; +float render_time=0; + +unsigned char sintable[4096]; + +extern float GetRelativeTime(); + +static void redraw(void) +{ +// glClear(GL_COLOR_BUFFER_BIT); + int x,y,i; + unsigned char *d=ImageData; + int dstride=BYTES_PP*image_width; + + GetRelativeTime(); + + // generate some image: + for(y=0;y<image_height;y++){ + int y1=2048*sin(akarmi*0.36725+y*0.0165); + int y2=2048*sin(akarmi*0.45621+y*0.02753); + int y3=2048*sin(akarmi*0.15643+y*0.03732); + for(x=0;x<image_width;x++){ + d[0]=sintable[(y1+x*135)&4095]; + d[1]=sintable[(y2+x*62)&4095]; + d[2]=sintable[(y3+x*23)&4095]; + d+=BYTES_PP; + } + } + + gen_time+=GetRelativeTime(); + +#ifdef FAST_BLIT + // upload texture: + for(i=0;i<image_height;i++){ + glTexSubImage2D( GL_TEXTURE_2D, // target + 0, // level + 0, // x offset + i, // y offset + image_width, // width + 1, // height + (BYTES_PP==4)?GL_RGBA:GL_RGB, // format + GL_UNSIGNED_BYTE, // type + ImageData+i*dstride ); // *pixels + } +#else + glTexSubImage2D( GL_TEXTURE_2D, // target + 0, // level + 0, // x offset + 0, // y offset + image_width, // width + image_height, // height + (BYTES_PP==4)?GL_RGBA:GL_RGB, // format + GL_UNSIGNED_BYTE, // type + ImageData ); // *pixels +#endif + + up_time+=GetRelativeTime(); + + glColor3f(1,1,1); + glBegin(GL_QUADS); + glTexCoord2f(0,0);glVertex2i(0,0); + glTexCoord2f(0,1);glVertex2i(0,texture_height); + glTexCoord2f(1,1);glVertex2i(texture_width,texture_height); + glTexCoord2f(1,0);glVertex2i(texture_width,0); + glEnd(); + + glFinish(); + glutSwapBuffers(); + + render_time+=GetRelativeTime(); + + ++counter; + { float total=gen_time+up_time+render_time; + if(total>2.0){ + printf("%8.3f fps (gen: %2d%% upload: %2d%% render: %2d%%)\n", + (float)counter/total, + (int)(100.0*gen_time/total), + (int)(100.0*up_time/total), + (int)(100.0*render_time/total) + ); + gen_time=up_time=render_time=0; + counter=0; + } } + +} + +static GLvoid IdleFunc(){ + akarmi+=0.1; + glutPostRedisplay(); +} + +int +main(int argc, char **argv) +{ + int i; + + glutInit(&argc, argv); + glutInitWindowSize(640, 480); + glutInitDisplayMode(GLUT_DOUBLE); + (void) glutCreateWindow("csg"); + + glutDisplayFunc(redraw); + glutReshapeFunc(resize); + glutIdleFunc(IdleFunc); + + texture_width=32; + while(texture_width<image_width) texture_width*=2; + while(texture_width<image_height) texture_width*=2; + texture_height=texture_width; + + image_bpp=8*BYTES_PP; + image_bytes=BYTES_PP; + + ImageData=malloc(texture_width*texture_height*image_bytes); + memset(ImageData,128,texture_width*texture_height*image_bytes); + + glDisable(GL_BLEND); + glDisable(GL_DEPTH_TEST); + glDepthMask(GL_FALSE); + glDisable(GL_CULL_FACE); + + glEnable(GL_TEXTURE_2D); + + printf("Creating %dx%d texture...\n",texture_width,texture_height); + +#if 1 +// glBindTexture(GL_TEXTURE_2D, texture_id); + glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER, GL_LINEAR); +#ifdef TEXTUREFORMAT_32BPP + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, texture_width, texture_height, 0, +#else + glTexImage2D(GL_TEXTURE_2D, 0, BYTES_PP, texture_width, texture_height, 0, +#endif + (image_bytes==4)?GL_RGBA:GL_BGR, GL_UNSIGNED_BYTE, ImageData); +#endif + + resize(640,480); + + glClearColor( 1.0f,0.0f,1.0f,0.0f ); + glClear( GL_COLOR_BUFFER_BIT ); + + for(i=0;i<4096;i++) sintable[i]=128+127*sin(2.0*3.14159265*i/4096.0); + + glutMainLoop(); + return 0; /* ANSI C requires main to return int. */ +} |