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-rw-r--r--progs/samples/blendxor.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/progs/samples/blendxor.c b/progs/samples/blendxor.c
deleted file mode 100644
index 057143651fd..00000000000
--- a/progs/samples/blendxor.c
+++ /dev/null
@@ -1,203 +0,0 @@
-/*
-** blendxor.c - Demonstrates the use of the blend_logic_op
-** extension to draw hilights. Using XOR to draw the same
-** image twice restores the background to its original value.
-*/
-
-#include <stdio.h>
-#include <string.h>
-#ifndef _WIN32
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <GL/glew.h>
-#include <GL/glut.h>
-
-
-GLenum doubleBuffer;
-int dithering = 0;
-int use11ops = 0;
-int supportlogops = 0;
-GLint windW, windH;
-
-static void Init(void)
-{
- glDisable(GL_DITHER);
- glShadeModel(GL_FLAT);
-}
-
-static void Reshape(int width, int height)
-{
-
- windW = (GLint)width;
- windH = (GLint)height;
-
- glViewport(0, 0, (GLint)width, (GLint)height);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluOrtho2D(0, 400, 0, 400);
- glMatrixMode(GL_MODELVIEW);
-}
-
-static void Key(unsigned char key, int x, int y)
-{
-
- switch (key) {
- case 27:
- exit(1);
- case 'd':
- dithering = !dithering;
- break;
- case 'l':
- if (supportlogops == 3)
- use11ops = (!use11ops);
- if (use11ops)
- printf("Using GL 1.1 color logic ops.\n");
- else printf("Using GL_EXT_blend_logic_op.\n");
- break;
- default:
- return;
- }
-
- glutPostRedisplay();
-}
-
-static void Draw(void)
-{
- int i;
-
- glDisable(GL_BLEND);
- if (supportlogops & 2)
- glDisable(GL_COLOR_LOGIC_OP);
-
- (dithering) ? glEnable(GL_DITHER) : glDisable(GL_DITHER);
-
- glClearColor(0.5, 0.6, 0.1, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
-
- /* Draw background prims */
- glColor3f(0.1, 0.1, 1.0);
- glBegin(GL_TRIANGLES);
- glVertex2i(5, 5);
- glVertex2i(130, 50);
- glVertex2i(100, 300);
- glEnd();
- glColor3f(0.5, 0.2, 0.9);
- glBegin(GL_TRIANGLES);
- glVertex2i(200, 100);
- glVertex2i(330, 50);
- glVertex2i(340, 400);
- glEnd();
-
- glEnable(GL_BLEND);
- if (!use11ops)
- glBlendEquationEXT(GL_LOGIC_OP);
- else
- glEnable(GL_COLOR_LOGIC_OP);
- glLogicOp(GL_XOR);
-
- /* Draw a set of rectangles across the window */
- glColor3f(0.9, 0.2, 0.8);
- for(i = 0; i < 400; i+=60) {
- glBegin(GL_POLYGON);
- glVertex2i(i, 100);
- glVertex2i(i+50, 100);
- glVertex2i(i+50, 200);
- glVertex2i(i, 200);
- glEnd();
- }
- glFlush(); /* Added by Brian Paul */
-#ifndef _WIN32
- sleep(2);
-#endif
-
- /* Redraw the rectangles, which should erase them */
- for(i = 0; i < 400; i+=60) {
- glBegin(GL_POLYGON);
- glVertex2i(i, 100);
- glVertex2i(i+50, 100);
- glVertex2i(i+50, 200);
- glVertex2i(i, 200);
- glEnd();
- }
- glFlush();
-
-
- if (doubleBuffer) {
- glutSwapBuffers();
- }
-}
-
-static GLenum Args(int argc, char **argv)
-{
- GLint i;
-
- doubleBuffer = GL_FALSE;
-
- for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-sb") == 0) {
- doubleBuffer = GL_FALSE;
- } else if (strcmp(argv[i], "-db") == 0) {
- doubleBuffer = GL_TRUE;
- } else {
- printf("%s (Bad option).\n", argv[i]);
- return GL_FALSE;
- }
- }
- return GL_TRUE;
-}
-
-int main(int argc, char **argv)
-{
- GLenum type;
- char *s;
- char *extName = "GL_EXT_blend_logic_op";
- char *version;
-
- glutInit(&argc, argv);
-
- if (Args(argc, argv) == GL_FALSE) {
- exit(1);
- }
-
- glutInitWindowPosition(0, 0); glutInitWindowSize( 400, 400);
-
- type = GLUT_RGB;
- type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
- glutInitDisplayMode(type);
-
- if (glutCreateWindow("Blend XOR") == GL_FALSE) {
- exit(1);
- }
-
- glewInit();
-
- /* Make sure blend_logic_op extension is there. */
- s = (char *) glGetString(GL_EXTENSIONS);
- version = (char*) glGetString(GL_VERSION);
- if (!s)
- exit(1);
- if (strstr(s,extName)) {
- supportlogops = 1;
- use11ops = 0;
- printf("blend_logic_op extension available.\n");
- }
- if (strncmp(version,"1.1",3)>=0) {
- supportlogops += 2;
- use11ops = 1;
- printf("1.1 color logic ops available.\n");
- }
- if (supportlogops == 0) {
- printf("Blend_logic_op extension and GL 1.1 not present.\n");
- exit(1);
- }
-
- Init();
-
- glutReshapeFunc(Reshape);
- glutKeyboardFunc(Key);
- glutDisplayFunc(Draw);
- glutMainLoop();
- return 0;
-}