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authorJakob Bornecrantz <[email protected]>2009-03-18 17:15:40 +0100
committerJakob Bornecrantz <[email protected]>2009-03-18 17:17:45 +0100
commit87bcb328c109af1e1dbf224e6cf9ab0c6de7feb0 (patch)
treef99484d087b4ffbfeace166fef8a233c1382152b /progs
parent13345a95400db632a7800e6fd8b8fdb74bba3c38 (diff)
progs/trivial: Add quad-tex-sub
Tests glTexSubImage
Diffstat (limited to 'progs')
-rw-r--r--progs/trivial/.gitignore1
-rw-r--r--progs/trivial/Makefile1
-rw-r--r--progs/trivial/SConscript1
-rw-r--r--progs/trivial/quad-tex-sub.c198
4 files changed, 201 insertions, 0 deletions
diff --git a/progs/trivial/.gitignore b/progs/trivial/.gitignore
index fb7f0f47781..aec4c94527d 100644
--- a/progs/trivial/.gitignore
+++ b/progs/trivial/.gitignore
@@ -59,6 +59,7 @@ quad-tex-2d
quad-tex-3d
quad-tex-alpha
quad-tex-pbo
+quad-tex-sub
quad-unfilled
quad-unfilled-clip
quad-unfilled-stipple
diff --git a/progs/trivial/Makefile b/progs/trivial/Makefile
index 0e70e80b6db..082387d86ea 100644
--- a/progs/trivial/Makefile
+++ b/progs/trivial/Makefile
@@ -70,6 +70,7 @@ SOURCES = \
quad-tex-3d.c \
quad-tex-alpha.c \
quad-tex-pbo.c \
+ quad-tex-sub.c \
quad-unfilled-clip.c \
quad-unfilled-stipple.c \
quad-unfilled.c \
diff --git a/progs/trivial/SConscript b/progs/trivial/SConscript
index 9444cdbe7ed..6a9ffafe509 100644
--- a/progs/trivial/SConscript
+++ b/progs/trivial/SConscript
@@ -66,6 +66,7 @@ progs = [
'quad-tex-3d',
'quad-tex-alpha',
'quad-tex-pbo',
+ 'quad-tex-sub',
'quad-unfilled-clip',
'quad-unfilled-stipple',
'quad-unfilled',
diff --git a/progs/trivial/quad-tex-sub.c b/progs/trivial/quad-tex-sub.c
new file mode 100644
index 00000000000..a7c92ce20d1
--- /dev/null
+++ b/progs/trivial/quad-tex-sub.c
@@ -0,0 +1,198 @@
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF
+ * ANY KIND,
+ * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL SILICON GRAPHICS BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glew.h>
+#include <GL/glut.h>
+
+
+#define CI_OFFSET_1 16
+#define CI_OFFSET_2 32
+
+#define SIZE 16
+GLenum doubleBuffer;
+GLint line = 0;
+
+static void MakeImage()
+{
+ GLubyte tex2d[SIZE][SIZE][3];
+ GLint s, t;
+
+ for (s = 0; s < SIZE; s++) {
+ for (t = 0; t < SIZE; t++) {
+ tex2d[s][t][0] = s*255/(SIZE-1);
+ tex2d[s][t][1] = t*255/(SIZE-1);
+ tex2d[s][t][2] = 0*255/(SIZE-1);
+ }
+ }
+
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
+ SIZE, SIZE,
+ 0,
+ GL_RGB, GL_UNSIGNED_BYTE, tex2d);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+ glEnable(GL_TEXTURE_2D);
+}
+
+static void UpdateLine()
+{
+ GLubyte tex[SIZE][3];
+ GLint s, t;
+
+ t = line % SIZE;
+
+ for (s = 0; s < SIZE; s++) {
+ tex[s][0] = s*255/(SIZE-1);
+ tex[s][1] = t*255/(SIZE-1);
+ tex[s][2] = 255;
+ }
+
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, t,
+ SIZE, 1,
+ GL_RGB, GL_UNSIGNED_BYTE, tex);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+}
+
+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));
+
+ glClearColor(0.0, 0.0, 1.0, 0.0);
+
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+ MakeImage();
+ UpdateLine();
+ line++;
+}
+
+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:
+ UpdateLine();
+ line++;
+ break;
+ }
+
+ glutPostRedisplay();
+}
+
+static void Draw(void)
+{
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ 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();
+
+ 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 {
+ fprintf(stderr, "%s (Bad option).\n", argv[i]);
+ return GL_FALSE;
+ }
+ }
+ return GL_TRUE;
+}
+
+int main(int argc, char **argv)
+{
+ GLenum type;
+
+ glutInit(&argc, argv);
+
+ if (Args(argc, argv) == GL_FALSE) {
+ exit(1);
+ }
+
+ glutInitWindowPosition(0, 0);
+ glutInitWindowSize(250, 250);
+
+ type = GLUT_RGB | GLUT_ALPHA;
+ type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+ glutInitDisplayMode(type);
+
+ if (glutCreateWindow(*argv) == GL_FALSE) {
+ exit(1);
+ }
+
+ glewInit();
+
+ Init();
+
+ glutReshapeFunc(Reshape);
+ glutKeyboardFunc(Key);
+ glutDisplayFunc(Draw);
+ glutMainLoop();
+ return 0;
+}