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delete frame/renderbuffers upon exit, more error checking

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This commit is contained in:
Brian Paul 2005-11-17 02:08:10 +00:00
parent 547113c16c
commit f81c78f87d
1 changed files with 29 additions and 15 deletions
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44
progs/tests/fbotest1.c
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@ -14,7 +14,7 @@
#include <GL/glut.h>
static int Width = 400, Height = 400;
static GLuint MyFB;
static GLuint MyFB, MyRB;
static void
@ -65,6 +65,7 @@ Display( void )
free(buffer);
glutSwapBuffers();
CheckError(__LINE__);
}
@ -91,6 +92,17 @@ Reshape( int width, int height )
}
static void
CleanUp(void)
{
glDeleteFramebuffersEXT(1, &MyFB);
glDeleteRenderbuffersEXT(1, &MyRB);
assert(!glIsFramebufferEXT(MyFB));
assert(!glIsRenderbufferEXT(MyRB));
exit(0);
}
static void
Key( unsigned char key, int x, int y )
{
@ -98,7 +110,7 @@ Key( unsigned char key, int x, int y )
(void) y;
switch (key) {
case 27:
exit(0);
CleanUp();
break;
}
glutPostRedisplay();
@ -108,7 +120,6 @@ Key( unsigned char key, int x, int y )
static void
Init( void )
{
GLuint rb;
GLint i;
if (!glutExtensionSupported("GL_EXT_framebuffer_object")) {
@ -124,29 +135,32 @@ Init( void )
assert(!glIsFramebufferEXT(MyFB));
/* Note, continue to use MyFB below */
glGenRenderbuffersEXT(1, &rb);
assert(rb);
assert(!glIsRenderbufferEXT(rb));
glDeleteRenderbuffersEXT(1, &rb);
assert(!glIsRenderbufferEXT(rb));
rb = 42; /* an arbitrary ID */
glGenRenderbuffersEXT(1, &MyRB);
assert(MyRB);
assert(!glIsRenderbufferEXT(MyRB));
glDeleteRenderbuffersEXT(1, &MyRB);
assert(!glIsRenderbufferEXT(MyRB));
MyRB = 42; /* an arbitrary ID */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB);
assert(glIsFramebufferEXT(MyFB));
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb);
assert(glIsRenderbufferEXT(rb));
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, MyRB);
assert(glIsRenderbufferEXT(MyRB));
glGetIntegerv(GL_RENDERBUFFER_BINDING_EXT, &i);
assert(i == rb);
assert(i == MyRB);
glGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &i);
assert(i == MyFB);
CheckError(__LINE__);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT,
GL_RENDERBUFFER_EXT, rb);
GL_RENDERBUFFER_EXT, MyRB);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height);
CheckError(__LINE__);
{
GLint r, g, b, a;
glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT,
@ -157,6 +171,7 @@ Init( void )
GL_RENDERBUFFER_BLUE_SIZE_EXT, &b);
glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT,
GL_RENDERBUFFER_ALPHA_SIZE_EXT, &a);
CheckError(__LINE__);
printf("renderbuffer RGBA sizes = %d %d %d %d\n", r, g, b, a);
glGetIntegerv(GL_RED_BITS, &r);
@ -166,10 +181,9 @@ Init( void )
printf("Visual RGBA sizes = %d %d %d %d\n", r, g, b, a);
}
CheckError(__LINE__);
/* restore to default */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
CheckError(__LINE__);
}