Test for fragment.position in points primitives. Currently renders
incorrectly on software mesa.
This commit is contained in:
parent
83304326c8
commit
28536e6c4f
|
@ -0,0 +1,119 @@
|
|||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#define GL_GLEXT_PROTOTYPES
|
||||
#include <GL/glut.h>
|
||||
#include "GL/gl.h"
|
||||
|
||||
|
||||
|
||||
static void Init( void )
|
||||
{
|
||||
static const char *modulate2D =
|
||||
"!!ARBfp1.0\n"
|
||||
"MUL result.color, fragment.position, {.005}.x; \n"
|
||||
"END"
|
||||
;
|
||||
GLuint modulateProg;
|
||||
|
||||
if (!glutExtensionSupported("GL_ARB_fragment_program")) {
|
||||
printf("Error: GL_ARB_fragment_program not supported!\n");
|
||||
exit(1);
|
||||
}
|
||||
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
|
||||
|
||||
/* Setup the fragment program */
|
||||
glGenProgramsARB(1, &modulateProg);
|
||||
glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, modulateProg);
|
||||
glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
|
||||
strlen(modulate2D), (const GLubyte *)modulate2D);
|
||||
|
||||
printf("glGetError = 0x%x\n", (int) glGetError());
|
||||
printf("glError(GL_PROGRAM_ERROR_STRING_ARB) = %s\n",
|
||||
(char *) glGetString(GL_PROGRAM_ERROR_STRING_ARB));
|
||||
|
||||
glEnable(GL_FRAGMENT_PROGRAM_ARB);
|
||||
|
||||
glClearColor(.3, .3, .3, 0);
|
||||
}
|
||||
|
||||
static void Reshape(int width, int height)
|
||||
{
|
||||
|
||||
glViewport(0, 0, (GLint)width, (GLint)height);
|
||||
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
}
|
||||
|
||||
static void Key(unsigned char key, int x, int y)
|
||||
{
|
||||
|
||||
switch (key) {
|
||||
case 27:
|
||||
exit(1);
|
||||
default:
|
||||
return;
|
||||
}
|
||||
|
||||
glutPostRedisplay();
|
||||
}
|
||||
|
||||
static void Draw(void)
|
||||
{
|
||||
glClear(GL_COLOR_BUFFER_BIT);
|
||||
|
||||
#if 0
|
||||
glBegin(GL_QUADS);
|
||||
glTexCoord2f(1,0);
|
||||
glVertex3f( 0.9, -0.9, -30.0);
|
||||
glTexCoord2f(1,1);
|
||||
glVertex3f( 0.9, 0.9, -30.0);
|
||||
glTexCoord2f(0,1);
|
||||
glVertex3f(-0.9, 0.9, -30.0);
|
||||
glTexCoord2f(0,0);
|
||||
glVertex3f(-0.9, -0.9, -30.0);
|
||||
glEnd();
|
||||
#else
|
||||
glPointSize(100);
|
||||
glBegin(GL_POINTS);
|
||||
glColor3f(0,0,1);
|
||||
glVertex3f( 0, 0, -30.0);
|
||||
glEnd();
|
||||
#endif
|
||||
|
||||
glFlush();
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
GLenum type;
|
||||
|
||||
glutInit(&argc, argv);
|
||||
|
||||
|
||||
|
||||
glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
|
||||
|
||||
type = GLUT_RGB;
|
||||
type |= GLUT_SINGLE;
|
||||
glutInitDisplayMode(type);
|
||||
|
||||
if (glutCreateWindow("First Tri") == GL_FALSE) {
|
||||
exit(1);
|
||||
}
|
||||
|
||||
Init();
|
||||
|
||||
glutReshapeFunc(Reshape);
|
||||
glutKeyboardFunc(Key);
|
||||
glutDisplayFunc(Draw);
|
||||
glutMainLoop();
|
||||
return 0;
|
||||
}
|
Loading…
Reference in New Issue