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authorBrian Paul <brian.paul@tungstengraphics.com>2003-03-14 15:41:51 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2003-03-14 15:41:51 +0000
commit5b8ed5150141d714354f26051c8c052a446f2cbd (patch)
treeab8f63f53b1ecba149a292e762f3f401f6008419 /progs
parentf386f73f9e4054a750d453fa2f5449c2f1d2e242 (diff)
simple NV_fragment_program texture test
Diffstat (limited to 'progs')
-rw-r--r--progs/tests/fptexture.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/progs/tests/fptexture.c b/progs/tests/fptexture.c
new file mode 100644
index 0000000000..a62116b320
--- /dev/null
+++ b/progs/tests/fptexture.c
@@ -0,0 +1,151 @@
+/* GL_NV_fragment_program texture test */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#define GL_GLEXT_PROTOTYPES
+#include <GL/glut.h>
+
+#include "readtex.c"
+
+
+#define TEXTURE_FILE "../images/girl.rgb"
+
+static GLfloat Xrot = 0.0, Yrot = 0.0, Zrot = 0.0;
+
+
+static void Display( void )
+{
+ glClear( GL_COLOR_BUFFER_BIT );
+
+ glPushMatrix();
+ glRotatef(Xrot, 1.0, 0.0, 0.0);
+ glRotatef(Yrot, 0.0, 1.0, 0.0);
+ glRotatef(Zrot, 0.0, 0.0, 1.0);
+
+ glBegin(GL_POLYGON);
+ glColor4f(1.0, 1.0, 1.0, 1); glTexCoord2f(0, 0); glVertex2f(-1, -1);
+ glColor4f(0.2, 0.2, 1.0, 1); glTexCoord2f(1, 0); glVertex2f( 1, -1);
+ glColor4f(0.2, 1.0, 0.2, 1); glTexCoord2f(1, 1); glVertex2f( 1, 1);
+ glColor4f(1.0, 0.2, 0.2, 1); glTexCoord2f(0, 1); glVertex2f(-1, 1);
+ glEnd();
+
+ 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, -8.0 );
+}
+
+
+static void SpecialKey( int key, int x, int y )
+{
+ float step = 3.0;
+ (void) x;
+ (void) y;
+
+ switch (key) {
+ case GLUT_KEY_UP:
+ Xrot += step;
+ break;
+ case GLUT_KEY_DOWN:
+ Xrot -= step;
+ break;
+ case GLUT_KEY_LEFT:
+ Yrot += step;
+ break;
+ case GLUT_KEY_RIGHT:
+ Yrot -= step;
+ break;
+ }
+ glutPostRedisplay();
+}
+
+
+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 )
+{
+ static const char *modulate2D =
+ "!!FP1.0\n"
+ "TEX R0, f[TEX0], TEX0, 2D; \n"
+ "MUL o[COLR], R0, f[COL0]; \n"
+ "END"
+ ;
+ GLuint modulateProg;
+ GLuint Texture;
+
+ if (!glutExtensionSupported("GL_NV_fragment_program")) {
+ printf("Error: GL_NV_fragment_program not supported!\n");
+ exit(1);
+ }
+ printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+
+ /* Setup the fragment program */
+ glGenProgramsNV(1, &modulateProg);
+ glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, modulateProg,
+ strlen(modulate2D),
+ (const GLubyte *) modulate2D);
+ printf("glGetError = 0x%x\n", (int) glGetError());
+ printf("glError(GL_PROGRAM_ERROR_STRING_NV) = %s\n",
+ (char *) glGetString(GL_PROGRAM_ERROR_STRING_NV));
+ assert(glIsProgramNV(modulateProg));
+
+ glBindProgramNV(GL_FRAGMENT_PROGRAM_NV, modulateProg);
+ glEnable(GL_FRAGMENT_PROGRAM_NV);
+
+ /* Load texture */
+ glGenTextures(1, &Texture);
+ glBindTexture(GL_TEXTURE_2D, Texture);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ if (!LoadRGBMipmaps(TEXTURE_FILE, GL_RGB)) {
+ printf("Error: couldn't load texture image file %s\n", TEXTURE_FILE);
+ exit(1);
+ }
+ /* XXX this enable shouldn't really be needed!!! */
+ glEnable(GL_TEXTURE_2D);
+
+ glClearColor(.3, .3, .3, 0);
+}
+
+
+int main( int argc, char *argv[] )
+{
+ glutInit( &argc, argv );
+ glutInitWindowPosition( 0, 0 );
+ glutInitWindowSize( 250, 250 );
+ glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
+ glutCreateWindow(argv[0]);
+ glutReshapeFunc( Reshape );
+ glutKeyboardFunc( Key );
+ glutSpecialFunc( SpecialKey );
+ glutDisplayFunc( Display );
+ Init();
+ glutMainLoop();
+ return 0;
+}