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tests: update bufferobj.c to test GL_ARB_vertex_array_object

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This commit is contained in:
Brian Paul 2009-06-22 17:51:30 -06:00
parent 2a795ad522
commit 31618f1a88
1 changed files with 94 additions and 24 deletions
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118
progs/tests/bufferobj.c
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@ -1,5 +1,6 @@
/*
* Test GL_ARB_vertex_buffer_object
* Also test GL_ARB_vertex_array_object if supported
*
* Brian Paul
* 16 Sep 2003
@ -9,6 +10,7 @@
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <GL/glew.h>
#include <GL/glut.h>
@ -17,6 +19,7 @@
struct object
{
GLuint ArrayObjectID; /** GL_ARB_vertex_array_object */
GLuint VertexBufferID;
GLuint ColorBufferID;
GLuint ElementsBufferID;
@ -35,6 +38,7 @@ static GLuint Win;
static GLfloat Xrot = 0, Yrot = 0, Zrot = 0;
static GLboolean Anim = GL_TRUE;
static GLboolean Have_ARB_vertex_array_object = GL_FALSE;
static void CheckError(int line)
@ -48,34 +52,54 @@ static void CheckError(int line)
static void DrawObject( const struct object *obj )
{
glBindBufferARB(GL_ARRAY_BUFFER_ARB, obj->VertexBufferID);
glVertexPointer(3, GL_FLOAT, obj->VertexStride, (void *) obj->VertexOffset);
glEnable(GL_VERTEX_ARRAY);
if (Have_ARB_vertex_array_object && obj->ArrayObjectID) {
glBindVertexArray(obj->ArrayObjectID);
/* test push/pop attrib */
/* XXX this leads to a segfault with NVIDIA's 53.36 driver */
#if 0
if (1)
{
glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
/*glVertexPointer(3, GL_FLOAT, 0, (void *) (obj->VertexOffset + 10000));*/
glBindBufferARB(GL_ARRAY_BUFFER_ARB, 999999);
glPopClientAttrib();
}
#endif
glBindBufferARB(GL_ARRAY_BUFFER_ARB, obj->ColorBufferID);
glColorPointer(3, GL_FLOAT, obj->ColorStride, (void *) obj->ColorOffset);
glEnable(GL_COLOR_ARRAY);
if (obj->NumElements > 0) {
/* indexed arrays */
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, obj->ElementsBufferID);
glDrawElements(GL_LINE_LOOP, obj->NumElements, GL_UNSIGNED_INT, NULL);
}
else {
/* non-indexed arrays */
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
glDrawArrays(GL_LINE_LOOP, 0, obj->NumVerts);
}
if (obj->NumElements > 0) {
/* indexed arrays */
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, obj->ElementsBufferID);
glDrawElements(GL_LINE_LOOP, obj->NumElements, GL_UNSIGNED_INT, NULL);
glBindVertexArray(0);
}
else {
/* non-indexed arrays */
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
glDrawArrays(GL_LINE_LOOP, 0, obj->NumVerts);
/* no vertex array objects, must set vertex/color pointers per draw */
glBindBufferARB(GL_ARRAY_BUFFER_ARB, obj->VertexBufferID);
glVertexPointer(3, GL_FLOAT, obj->VertexStride, (void *) obj->VertexOffset);
glEnable(GL_VERTEX_ARRAY);
/* test push/pop attrib */
/* XXX this leads to a segfault with NVIDIA's 53.36 driver */
#if 0
if (1)
{
glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT);
/*glVertexPointer(3, GL_FLOAT, 0, (void *) (obj->VertexOffset + 10000));*/
glBindBufferARB(GL_ARRAY_BUFFER_ARB, 999999);
glPopClientAttrib();
}
#endif
glBindBufferARB(GL_ARRAY_BUFFER_ARB, obj->ColorBufferID);
glColorPointer(3, GL_FLOAT, obj->ColorStride, (void *) obj->ColorOffset);
glEnable(GL_COLOR_ARRAY);
if (obj->NumElements > 0) {
/* indexed arrays */
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, obj->ElementsBufferID);
glDrawElements(GL_LINE_LOOP, obj->NumElements, GL_UNSIGNED_INT, NULL);
}
else {
/* non-indexed arrays */
glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
glDrawArrays(GL_LINE_LOOP, 0, obj->NumVerts);
}
}
}
@ -187,6 +211,28 @@ static void SpecialKey( int key, int x, int y )
}
/**
* If GL_ARB_vertex_array_object is supported, create an array object
* and set all the per-array state.
*/
static void
CreateVertexArrayObject(struct object *obj)
{
glGenVertexArrays(1, &obj->ArrayObjectID);
glBindVertexArray(obj->ArrayObjectID);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, obj->VertexBufferID);
glVertexPointer(3, GL_FLOAT, obj->VertexStride, (void *) obj->VertexOffset);
glEnable(GL_VERTEX_ARRAY);
glBindBufferARB(GL_ARRAY_BUFFER_ARB, obj->ColorBufferID);
glColorPointer(3, GL_FLOAT, obj->ColorStride, (void *) obj->ColorOffset);
glEnable(GL_COLOR_ARRAY);
glBindVertexArray(0);
}
/*
* Non-interleaved position/color data.
*/
@ -262,6 +308,10 @@ static void MakeObject1(struct object *obj)
glGetBufferParameterivARB(GL_ARRAY_BUFFER_ARB, GL_BUFFER_MAPPED_ARB, &i);
assert(!i);
if (Have_ARB_vertex_array_object) {
CreateVertexArrayObject(obj);
}
}
@ -297,6 +347,10 @@ static void MakeObject2(struct object *obj)
obj->NumElements = 0;
glUnmapBufferARB(GL_ARRAY_BUFFER_ARB);
if (Have_ARB_vertex_array_object) {
CreateVertexArrayObject(obj);
}
}
@ -347,6 +401,10 @@ static void MakeObject3(struct object *obj)
i[3] = 3;
glUnmapBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB);
obj->NumElements = 4;
if (Have_ARB_vertex_array_object) {
CreateVertexArrayObject(obj);
}
}
@ -387,6 +445,10 @@ static void MakeObject4(struct object *obj)
/* Setup a buffer of indices to test the ELEMENTS path */
obj->ElementsBufferID = 0;
obj->NumElements = 0;
if (Have_ARB_vertex_array_object) {
CreateVertexArrayObject(obj);
}
}
@ -399,6 +461,13 @@ static void Init( void )
}
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
Have_ARB_vertex_array_object =
glutExtensionSupported("GL_ARB_vertex_array_object");
printf("Using GL_ARB_vertex_array_object: %s\n",
(Have_ARB_vertex_array_object ? "yes" : "no"));
/* Test buffer object deletion */
if (1) {
static GLubyte data[1000];
@ -413,6 +482,7 @@ static void Init( void )
assert(!glIsBufferARB(id));
}
memset(Objects, 0, sizeof(Objects));
MakeObject1(Objects + 0);
MakeObject2(Objects + 1);
MakeObject3(Objects + 2);