+++ /dev/null
-/*
- * Vertex program evaluators test.
- * Based on book/bezmesh.c
- *
- * Brian Paul
- * 22 June 2002
- */
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-
-/*
- * Transform position by modelview/projection.
- * Square incoming color.
- */
-static const char prog[] =
-"!!VP1.0\n"
-
-"# Typical modelview/projection\n"
-"DP4 o[HPOS].x, c[0], v[OPOS] ; # object x MVP -> clip\n"
-"DP4 o[HPOS].y, c[1], v[OPOS] ;\n"
-"DP4 o[HPOS].z, c[2], v[OPOS] ;\n"
-"DP4 o[HPOS].w, c[3], v[OPOS] ;\n"
-
-"MOV R0, v[COL0];\n # square the color\n"
-"MUL R0, R0, R0;\n"
-"MOV o[COL0], R0;\n # store output color\n"
-
-"END";
-
-
-static int program = 1;
-
-
-GLfloat ctrlpoints[4][4][4] =
-{
- {
- {-1.5, -1.5, 4.0, 1.0},
- {-0.5, -1.5, 2.0, 1.0},
- {0.5, -1.5, -1.0, 1.0},
- {1.5, -1.5, 2.0, 1.0}},
- {
- {-1.5, -0.5, 1.0, 1.0},
- {-0.5, -0.5, 3.0, 1.0},
- {0.5, -0.5, 0.0, 1.0},
- {1.5, -0.5, -1.0, 1.0}},
- {
- {-1.5, 0.5, 4.0, 1.0},
- {-0.5, 0.5, 0.0, 1.0},
- {0.5, 0.5, 3.0, 1.0},
- {1.5, 0.5, 4.0, 1.0}},
- {
- {-1.5, 1.5, -2.0, 1.0},
- {-0.5, 1.5, -2.0, 1.0},
- {0.5, 1.5, 0.0, 1.0},
- {1.5, 1.5, -1.0, 1.0}}
-};
-
-/*
- * +-------------+
- * |green |yellow
- * | |
- * | |
- * |black |red
- * +-------------+
- */
-GLfloat colorPoints[4][4][4] =
-{
- {
- {0.0, 0.0, 0.0, 1.0},
- {0.3, 0.0, 0.0, 1.0},
- {0.6, 0.0, 0.0, 1.0},
- {1.0, 0.0, 0.0, 1.0}},
- {
- {0.0, 0.3, 0.0, 1.0},
- {0.3, 0.3, 0.0, 1.0},
- {0.6, 0.3, 0.0, 1.0},
- {1.0, 0.3, 0.0, 1.0}},
- {
- {0.0, 0.6, 0.0, 1.0},
- {0.3, 0.6, 0.0, 1.0},
- {0.6, 0.6, 0.0, 1.0},
- {1.0, 0.6, 0.0, 1.0}},
- {
- {0.0, 1.0, 0.0, 1.0},
- {0.3, 1.0, 0.0, 1.0},
- {0.6, 1.0, 0.0, 1.0},
- {1.0, 1.0, 0.0, 1.0}}
-};
-
-
-static void
-initlights(void)
-{
-#if 0 /* no lighting for now */
- GLfloat ambient[] = {0.2, 0.2, 0.2, 1.0};
- GLfloat position[] = {0.0, 0.0, 2.0, 1.0};
- GLfloat mat_diffuse[] = {0.6, 0.6, 0.6, 1.0};
- GLfloat mat_specular[] = {1.0, 1.0, 1.0, 1.0};
- GLfloat mat_shininess[] = {50.0};
-
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
-
- glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
- glLightfv(GL_LIGHT0, GL_POSITION, position);
-
- glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
- glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
- glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
-#endif
-}
-
-static void
-display(void)
-{
- glClearColor(.3, .3, .3, 0);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glPushMatrix();
-#if 1
- glRotatef(85.0, 1.0, 1.0, 1.0);
-#endif
- glEvalMesh2(GL_FILL, 0, 8, 0, 8);
- glPopMatrix();
- glFlush();
-}
-
-static void
-myinit(int argc, char *argv[])
-{
- glClearColor(0.0, 0.0, 0.0, 1.0);
- glEnable(GL_DEPTH_TEST);
-
- initlights(); /* for lighted version only */
-
- glMapGrid2f(8, 0.0, 1.0, 8, 0.0, 1.0);
-
- if (argc > 1)
- program = 0;
-
- printf("Using vertex program attribs? %s\n", program ? "yes" : "no");
-
- if (program && !glutExtensionSupported("GL_NV_vertex_program")) {
- printf("Sorry, this requires GL_NV_vertex_program\n");
- exit(1);
- }
-
- if (!program) {
- glMap2f(GL_MAP2_VERTEX_4,
- 0.0, 1.0, 4, 4,
- 0.0, 1.0, 16, 4, &ctrlpoints[0][0][0]);
- glMap2f(GL_MAP2_COLOR_4,
- 0.0, 1.0, 4, 4,
- 0.0, 1.0, 16, 4, &colorPoints[0][0][0]);
- glEnable(GL_MAP2_VERTEX_4);
- glEnable(GL_MAP2_COLOR_4);
- /*
- glEnable(GL_AUTO_NORMAL);
- glEnable(GL_NORMALIZE);
- */
- }
- else {
- glMap2f(GL_MAP2_VERTEX_ATTRIB0_4_NV,
- 0.0, 1.0, 4, 4,
- 0.0, 1.0, 16, 4, &ctrlpoints[0][0][0]);
- glMap2f(GL_MAP2_VERTEX_ATTRIB3_4_NV,
- 0.0, 1.0, 4, 4,
- 0.0, 1.0, 16, 4, &colorPoints[0][0][0]);
- glEnable(GL_MAP2_VERTEX_ATTRIB0_4_NV);
- glEnable(GL_MAP2_VERTEX_ATTRIB3_4_NV);
-
- /*
- glEnable(GL_AUTO_NORMAL);
- glEnable(GL_NORMALIZE);
- */
-
- /* vertex program init */
- glLoadProgramNV(GL_VERTEX_PROGRAM_NV, 1,
- strlen(prog), (const GLubyte *) prog);
- assert(glIsProgramNV(1));
- glBindProgramNV(GL_VERTEX_PROGRAM_NV, 1);
-
- /* track matrices */
- glTrackMatrixNV(GL_VERTEX_PROGRAM_NV, 0, GL_MODELVIEW_PROJECTION_NV, GL_IDENTITY_NV);
- glEnable(GL_VERTEX_PROGRAM_NV);
- }
-}
-
-static void
-myReshape(int w, int h)
-{
- glViewport(0, 0, w, h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- if (w <= h)
- glOrtho(-4.0, 4.0, -4.0 * (GLfloat) h / (GLfloat) w,
- 4.0 * (GLfloat) h / (GLfloat) w, -4.0, 4.0);
- else
- glOrtho(-4.0 * (GLfloat) w / (GLfloat) h,
- 4.0 * (GLfloat) w / (GLfloat) h, -4.0, 4.0, -4.0, 4.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-}
-
-static void
-key(unsigned char k, int x, int y)
-{
- switch (k) {
- case 27: /* Escape */
- exit(0);
- break;
- default:
- return;
- }
- glutPostRedisplay();
-}
-
-int
-main(int argc, char **argv)
-{
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
- glutInitWindowPosition(0, 0);
- glutCreateWindow(argv[0]);
- glewInit();
- myinit(argc, argv);
- glutReshapeFunc(myReshape);
- glutDisplayFunc(display);
- glutKeyboardFunc(key);
- glutMainLoop();
- return 0; /* ANSI C requires main to return int. */
-}
projects / mesa.git / blobdiff