diff options
| -rw-r--r-- | progs/tests/bufferobj.c | 120 |
1 files changed, 95 insertions, 25 deletions
diff --git a/progs/tests/bufferobj.c b/progs/tests/bufferobj.c index 1d97b060efc..220bd1f5062 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); |