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-rw-r--r--progs/tests/bufferobj.c120
1 files changed, 95 insertions, 25 deletions
diff --git a/progs/tests/bufferobj.c b/progs/tests/bufferobj.c
index 1d97b060ef..220bd1f506 100644
--- a/progs/tests/bufferobj.c
+++ b/progs/tests/bufferobj.c
@@ -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);
+
+ 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);
+ }
+
+ glBindVertexArray(0);
+ }
+ else {
+ /* no vertex array objects, must set vertex/color pointers per draw */
- /* test push/pop attrib */
- /* XXX this leads to a segfault with NVIDIA's 53.36 driver */
+ 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();
- }
+ 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);
+ 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);