diff options
| -rw-r--r-- | progs/tests/Makefile | 2 | ||||
| -rw-r--r-- | progs/tests/floattex.c | 169 |
2 files changed, 171 insertions, 0 deletions
diff --git a/progs/tests/Makefile b/progs/tests/Makefile index 6a8d51112a..9f1e3cc9eb 100644 --- a/progs/tests/Makefile +++ b/progs/tests/Makefile @@ -22,6 +22,7 @@ SOURCES = antialias.c \ bufferobj.c \ cva.c \ dinoshade.c \ + floattex.c \ fogcoord.c \ fptest1.c \ fptexture.c \ @@ -33,6 +34,7 @@ SOURCES = antialias.c \ seccolor.c \ sharedtex.c \ stencilwrap.c \ + swaplock.c \ tex1d.c \ texline.c \ texrect.c \ diff --git a/progs/tests/floattex.c b/progs/tests/floattex.c new file mode 100644 index 0000000000..2345a49b27 --- /dev/null +++ b/progs/tests/floattex.c @@ -0,0 +1,169 @@ +/* + * Test floating point textures. + * No actual rendering, yet. + */ + + +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <GL/glut.h> + + +/* XXX - temporary */ +#ifndef GL_ARB_texture_float +#define GL_ARB_texture_float 1 +#define GL_TEXTURE_RED_TYPE_ARB 0x9000 +#define GL_TEXTURE_GREEN_TYPE_ARB 0x9001 +#define GL_TEXTURE_BLUE_TYPE_ARB 0x9002 +#define GL_TEXTURE_ALPHA_TYPE_ARB 0x9003 +#define GL_TEXTURE_LUMINANCE_TYPE_ARB 0x9004 +#define GL_TEXTURE_INTENSITY_TYPE_ARB 0x9005 +#define GL_TEXTURE_DEPTH_TYPE_ARB 0x9006 +#define GL_UNSIGNED_NORMALIZED_ARB 0x9007 +#define GL_RGBA32F_ARB 0x8814 +#define GL_RGB32F_ARB 0x8815 +#define GL_ALPHA32F_ARB 0x8816 +#define GL_INTENSITY32F_ARB 0x8817 +#define GL_LUMINANCE32F_ARB 0x8818 +#define GL_LUMINANCE_ALPHA32F_ARB 0x8819 +#define GL_RGBA16F_ARB 0x881A +#define GL_RGB16F_ARB 0x881B +#define GL_ALPHA16F_ARB 0x881C +#define GL_INTENSITY16F_ARB 0x881D +#define GL_LUMINANCE16F_ARB 0x881E +#define GL_LUMINANCE_ALPHA16F_ARB 0x881F +#endif + + +static GLboolean +CheckError( int line ) +{ + GLenum error = glGetError(); + if (error) { + char *err = (char *) gluErrorString( error ); + fprintf( stderr, "GL Error: %s at line %d\n", err, line ); + return GL_TRUE; + } + return GL_FALSE; +} + + +static void +Draw(void) +{ + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + glPushMatrix(); + + glutSolidCube(2.0); + + glPopMatrix(); + + glutSwapBuffers(); +} + + +static void +Reshape(int width, int height) +{ + glViewport(0, 0, width, height); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(0.0, 0.0, -15.0); +} + + +static void +Key(unsigned char key, int x, int y) +{ + (void) x; + (void) y; + switch (key) { + case 27: + exit(0); + break; + } + glutPostRedisplay(); +} + + + +static void +Init(void) +{ + GLfloat tex[16][16][4]; + GLfloat tex2[16][16][4]; + GLint i, j, t; + + if (!glutExtensionSupported("GL_MESAX_texture_float")) { + printf("Sorry, this test requires GL_MESAX_texture_float\n"); + exit(1); + } + + for (i = 0; i < 16; i++) { + for (j = 0; j < 16; j++) { + GLfloat s = i / 15.0; + tex[i][j][0] = s; + tex[i][j][1] = 2.0 * s; + tex[i][j][2] = -3.0 * s; + tex[i][j][3] = 4.0 * s; + } + } + + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, 16, 16, 0, GL_RGBA, + GL_FLOAT, tex); + CheckError(__LINE__); + + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_RED_TYPE_ARB, &t); + assert(t == GL_FLOAT); + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_GREEN_TYPE_ARB, &t); + assert(t == GL_FLOAT); + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_BLUE_TYPE_ARB, &t); + assert(t == GL_FLOAT); + glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_ALPHA_TYPE_ARB, &t); + assert(t == GL_FLOAT); + + CheckError(__LINE__); + + /* read back the texture and make sure values are correct */ + glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT, tex2); + CheckError(__LINE__); + for (i = 0; i < 16; i++) { + for (j = 0; j < 16; j++) { + if (tex[i][j][0] != tex2[i][j][0] || + tex[i][j][1] != tex2[i][j][1] || + tex[i][j][2] != tex2[i][j][2] || + tex[i][j][3] != tex2[i][j][3]) { + printf("tex[%d][%d] %g %g %g %g != tex2[%d][%d] %g %g %g %g\n", + i, j, + tex[i][j][0], tex[i][j][1], tex[i][j][2], tex[i][j][3], + i, j, + tex2[i][j][0], tex2[i][j][1], tex2[i][j][2], tex2[i][j][3]); + } + } + } + + +} + + +int +main(int argc, char *argv[]) +{ + glutInit(&argc, argv); + glutInitWindowPosition(0, 0); + glutInitWindowSize(400, 400); + glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); + glutCreateWindow(argv[0]); + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutDisplayFunc(Draw); + Init(); + glutMainLoop(); + return 0; +} |