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-rw-r--r--progs/tests/fbotexture.c70
1 files changed, 57 insertions, 13 deletions
diff --git a/progs/tests/fbotexture.c b/progs/tests/fbotexture.c
index aa9f6171221..88d0549c808 100644
--- a/progs/tests/fbotexture.c
+++ b/progs/tests/fbotexture.c
@@ -38,6 +38,8 @@ static GLfloat Rot = 0.0;
static GLboolean UsePackedDepthStencil = GL_FALSE;
static GLuint TextureLevel = 1; /* which texture level to render to */
static GLenum TexIntFormat = GL_RGB; /* either GL_RGB or GL_RGBA */
+static GLboolean Cull = GL_FALSE;
+static GLboolean Wireframe = GL_FALSE;
static void
@@ -115,6 +117,22 @@ RenderTexture(void)
CheckError(__LINE__);
+ if (Wireframe) {
+ glPolygonMode(GL_FRONT, GL_LINE);
+ }
+ else {
+ glPolygonMode(GL_FRONT, GL_FILL);
+ }
+
+ if (Cull) {
+ /* cull back */
+ glCullFace(GL_BACK);
+ glEnable(GL_CULL_FACE);
+ }
+ else {
+ glDisable(GL_CULL_FACE);
+ }
+
#if 0
glBegin(GL_POLYGON);
glColor3f(1, 0, 0);
@@ -129,7 +147,9 @@ RenderTexture(void)
glEnable(GL_LIGHT0);
glPushMatrix();
glRotatef(0.5 * Rot, 1.0, 0.0, 0.0);
+ glFrontFace(GL_CW); /* Teapot patches backward */
glutSolidTeapot(0.5);
+ glFrontFace(GL_CCW);
glPopMatrix();
glDisable(GL_LIGHTING);
/*
@@ -139,6 +159,8 @@ RenderTexture(void)
glDisable(GL_DEPTH_TEST);
glDisable(GL_STENCIL_TEST);
+ glDisable(GL_CULL_FACE);
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
#if DRAW
/* Bind normal framebuffer */
@@ -245,25 +267,46 @@ Key(unsigned char key, int x, int y)
(void) x;
(void) y;
switch (key) {
- case 'a':
- Anim = !Anim;
- if (Anim)
- glutIdleFunc(Idle);
- else
- glutIdleFunc(NULL);
- break;
- case 's':
- Rot += 2.0;
- break;
- case 27:
- CleanUp();
- break;
+ case 'a':
+ Anim = !Anim;
+ if (Anim)
+ glutIdleFunc(Idle);
+ else
+ glutIdleFunc(NULL);
+ break;
+ case 'c':
+ Cull = !Cull;
+ break;
+ case 'w':
+ Wireframe = !Wireframe;
+ break;
+ case 's':
+ Rot += 2.0;
+ break;
+ case 'S':
+ Rot -= 2.0;
+ break;
+ case 27:
+ CleanUp();
+ break;
}
glutPostRedisplay();
}
static void
+Usage(void)
+{
+ printf("Usage:\n");
+ printf(" a Toggle animation\n");
+ printf(" s/s Step/rotate\n");
+ printf(" c Toggle back-face culling\n");
+ printf(" w Toggle wireframe mode (front-face only)\n");
+ printf(" Esc Exit\n");
+}
+
+
+static void
Init(int argc, char *argv[])
{
static const GLfloat mat[4] = { 1.0, 0.5, 0.5, 1.0 };
@@ -402,6 +445,7 @@ main(int argc, char *argv[])
if (Anim)
glutIdleFunc(Idle);
Init(argc, argv);
+ Usage();
glutMainLoop();
return 0;
}