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authorJakob Bornecrantz <jakob@vmware.com>2009-02-13 23:03:57 +0100
committerJakob Bornecrantz <jakob@vmware.com>2009-02-13 23:03:57 +0100
commitb6779056a108675b04ec8b57d7f84b5582f3144f (patch)
tree1e64a46c4214776358bc739834fb10b29da9a80a /progs
parent89e2b9c6c24e1a0b7690b9a7502b0ea198069d10 (diff)
trivial: Make tri-fog a bit more interesting to look at
Diffstat (limited to 'progs')
-rw-r--r--progs/trivial/tri-fog.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/progs/trivial/tri-fog.c b/progs/trivial/tri-fog.c
index 75f3262ecf4..a2e12f8870a 100644
--- a/progs/trivial/tri-fog.c
+++ b/progs/trivial/tri-fog.c
@@ -42,6 +42,15 @@ static void Init(void)
fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
glClearColor(0.0, 0.0, 1.0, 0.0);
+
+ glEnable(GL_FOG);
+ glFogi(GL_FOG_MODE, GL_LINEAR);
+ glFogf(GL_FOG_START, 25);
+ glFogf(GL_FOG_END, 35);
+#if 0
+ glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ glEnable (GL_BLEND);
+#endif
}
static void Reshape(int width, int height)
@@ -70,26 +79,26 @@ static void Key(unsigned char key, int x, int y)
static void Draw(void)
{
- glClear(GL_COLOR_BUFFER_BIT);
+ glClear(GL_COLOR_BUFFER_BIT);
glEnable(GL_FOG);
glBegin(GL_TRIANGLES);
- glColor3f(0,0,.7);
+ glColor3f(1,1,1);
glVertex3f( 0.9, -0.9, -30.0);
- glColor3f(.8,0,0);
+ glColor3f(1,1,1);
glVertex3f( 0.9, 0.9, -30.0);
- glColor3f(0,.9,0);
- glVertex3f(-0.9, 0.0, -30.0);
+ glColor3f(1,1,1);
+ glVertex3f(-0.9, 0.0, -40.0);
glEnd();
#if 0
glBegin(GL_TRIANGLES);
- glColor3f(0,0,.7);
+ glColor3f(0,0,.7);
glVertex3f(-0.9, -0.9, -30.0);
- glColor3f(.8,0,0);
+ glColor3f(.8,0,0);
glVertex3f(-0.9, 0.9, -30.0);
- glColor3f(0,.9,0);
+ glColor3f(0,.9,0);
glVertex3f( 0.9, 0.0, -30.0);
glEnd();
#endif