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authorBrian Paul <brianp@vmware.com>2015-07-20 15:34:22 -0600
committerBrian Paul <brianp@vmware.com>2015-07-20 15:34:22 -0600
commitd658af70f5bc2c187688d59162f5e1f9db277a2d (patch)
tree9ce2d78fc775aa358a906f6c85a13c57cb8b9d02
parent4809f7596026b3e39b55cffcf729b8f42aa37f90 (diff)
downloadmesa-demos-d658af70f5bc2c187688d59162f5e1f9db277a2d.zip
mesa-demos-d658af70f5bc2c187688d59162f5e1f9db277a2d.tar.xz
tri-tex-stipple: trivial test of texturing with stippling
-rw-r--r--src/trivial/CMakeLists.txt1
-rw-r--r--src/trivial/Makefile.am1
-rw-r--r--src/trivial/tri-tex-stipple.c120
3 files changed, 122 insertions, 0 deletions
diff --git a/src/trivial/CMakeLists.txt b/src/trivial/CMakeLists.txt
index b42d1f9..04f739b 100644
--- a/src/trivial/CMakeLists.txt
+++ b/src/trivial/CMakeLists.txt
@@ -158,6 +158,7 @@ set (targets
tri-tex-1d
tri-tex-3d
tri-tex
+ tri-tex-stipple
tri-tri
tri-unfilled
tri-unfilled-clip
diff --git a/src/trivial/Makefile.am b/src/trivial/Makefile.am
index 87d4e40..1c53ef5 100644
--- a/src/trivial/Makefile.am
+++ b/src/trivial/Makefile.am
@@ -170,6 +170,7 @@ bin_PROGRAMS = \
tri-tex-1d \
tri-tex-3d \
tri-tex \
+ tri-tex-stipple \
tri-tri \
tri-unfilled \
tri-unfilled-clip \
diff --git a/src/trivial/tri-tex-stipple.c b/src/trivial/tri-tex-stipple.c
new file mode 100644
index 0000000..8f1ac90
--- /dev/null
+++ b/src/trivial/tri-tex-stipple.c
@@ -0,0 +1,120 @@
+/* test texturing + stippling */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glew.h>
+#include "glut_wrap.h"
+
+
+static GLubyte fly[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x03, 0x80, 0x01, 0xC0, 0x06, 0xC0, 0x03, 0x60, 0x04, 0x60, 0x06, 0x20,
+0x04, 0x30, 0x0C, 0x20, 0x04, 0x18, 0x18, 0x20, 0x04, 0x0C, 0x30, 0x20,
+0x04, 0x06, 0x60, 0x20, 0x44, 0x03, 0xC0, 0x22, 0x44, 0x01, 0x80, 0x22,
+0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22,
+0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22, 0x66, 0x01, 0x80, 0x66,
+0x33, 0x01, 0x80, 0xCC, 0x19, 0x81, 0x81, 0x98, 0x0C, 0xC1, 0x83, 0x30,
+0x07, 0xe1, 0x87, 0xe0, 0x03, 0x3f, 0xfc, 0xc0, 0x03, 0x31, 0x8c, 0xc0,
+0x03, 0x33, 0xcc, 0xc0, 0x06, 0x64, 0x26, 0x60, 0x0c, 0xcc, 0x33, 0x30,
+0x18, 0xcc, 0x33, 0x18, 0x10, 0xc4, 0x23, 0x08, 0x10, 0x63, 0xC6, 0x08,
+0x10, 0x30, 0x0c, 0x08, 0x10, 0x18, 0x18, 0x08, 0x10, 0x00, 0x00, 0x08};
+
+
+static void
+Init(void)
+{
+ fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+ fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
+ fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
+ fflush(stderr);
+
+ glClearColor(0.0, 0.0, 1.0, 1.0);
+
+#define SIZE 32
+ {
+ GLubyte tex2d[SIZE][SIZE][3];
+ GLint s, t;
+
+ for (s = 0; s < SIZE; s++) {
+ for (t = 0; t < SIZE; t++) {
+ tex2d[t][s][0] = s*255/(SIZE-1);
+ tex2d[t][s][1] = t*255/(SIZE-1);
+ tex2d[t][s][2] = 0;
+ }
+ }
+
+ glEnable(GL_TEXTURE_2D);
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glTexImage2D(GL_TEXTURE_2D, 0, 3, SIZE, SIZE, 0,
+ GL_RGB, GL_UNSIGNED_BYTE, tex2d);
+ }
+
+ glEnable (GL_POLYGON_STIPPLE);
+ glPolygonStipple (fly);
+}
+
+
+static void
+Reshape(int width, int height)
+{
+ glViewport(0, 0, (GLint)width, (GLint)height);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glMatrixMode(GL_MODELVIEW);
+}
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+ if (key == 27)
+ exit(1);
+
+ glutPostRedisplay();
+}
+
+
+static void
+Draw(void)
+{
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glBegin(GL_TRIANGLES);
+ glTexCoord2f(1,-1);
+ glVertex3f(0.9, -0.9, -0.0);
+ glTexCoord2f(1,1);
+ glVertex3f(0.9, 0.9, -0.0);
+ glTexCoord2f(-1,0);
+ glVertex3f(-0.9, 0.0, -0.0);
+ glEnd();
+
+ glutSwapBuffers();
+}
+
+
+int
+main(int argc, char **argv)
+{
+ glutInit(&argc, argv);
+ glutInitWindowPosition(0, 0);
+ glutInitWindowSize(250, 250);
+ glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
+
+ if (glutCreateWindow(*argv) == GL_FALSE) {
+ exit(1);
+ }
+
+ Init();
+
+ glutReshapeFunc(Reshape);
+ glutKeyboardFunc(Key);
+ glutDisplayFunc(Draw);
+ glutMainLoop();
+
+ return 0;
+}