C++ (Cpp) GPU_buffer_free Examples

Example #1

File: RAS_InstancingBuffer.cpp Project: UPBGE/blender

void RAS_InstancingBuffer::Realloc(unsigned int size)
{
	if (m_vbo) {
		GPU_buffer_free(m_vbo);
	}
	m_vbo = GPU_buffer_alloc(m_stride * size);
}

Example #2

/* confusion: code in cdderivedmesh calls both GPU_color_setup and
   GPU_color3_upload; both of these set the `colors' buffer, so seems
   like it will just needlessly overwrite? --nicholas */
void GPU_color3_upload(DerivedMesh *dm, unsigned char *data)
{
	if(dm->drawObject == 0)
		dm->drawObject = GPU_drawobject_new(dm);
	GPU_buffer_free(dm->drawObject->colors);

	dm->drawObject->colors = gpu_buffer_setup(dm, dm->drawObject, 3,
						  sizeof(char)*3*dm->drawObject->tot_triangle_point,
						  GL_ARRAY_BUFFER_ARB, data, GPU_buffer_copy_color3);
}

Example #3

void GPU_drawobject_free(DerivedMesh *dm)
{
	GPUDrawObject *gdo;

	if(!dm || !(gdo = dm->drawObject))
		return;

	MEM_freeN(gdo->materials);
	MEM_freeN(gdo->triangle_to_mface);
	MEM_freeN(gdo->vert_points);
	MEM_freeN(gdo->vert_points_mem);
	GPU_buffer_free(gdo->points);
	GPU_buffer_free(gdo->normals);
	GPU_buffer_free(gdo->uv);
	GPU_buffer_free(gdo->colors);
	GPU_buffer_free(gdo->edges);
	GPU_buffer_free(gdo->uvedges);

	MEM_freeN(gdo);
	dm->drawObject = NULL;
}

Example #4

File: RAS_InstancingBuffer.cpp Project: UPBGE/blender

RAS_InstancingBuffer::~RAS_InstancingBuffer()
{
	if (m_vbo) {
		GPU_buffer_free(m_vbo);
	}
}

Example #5

static GPUBuffer *gpu_buffer_setup(DerivedMesh *dm, GPUDrawObject *object,
				   int vector_size, int size, GLenum target,
				   void *user, GPUBufferCopyFunc copy_f)
{
	GPUBufferPool *pool;
	GPUBuffer *buffer;
	float *varray;
	int mat_orig_to_new[MAX_MATERIALS];
	int *cur_index_per_mat;
	int i;
	int success;
	GLboolean uploaded;

	pool = gpu_get_global_buffer_pool();

	/* alloc a GPUBuffer; fall back to legacy mode on failure */
	if(!(buffer = GPU_buffer_alloc(size)))
		dm->drawObject->legacy = 1;

	/* nothing to do for legacy mode */
	if(dm->drawObject->legacy)
		return 0;

	cur_index_per_mat = MEM_mallocN(sizeof(int)*object->totmaterial,
					"GPU_buffer_setup.cur_index_per_mat");
	for(i = 0; i < object->totmaterial; i++) {
		/* for each material, the current index to copy data to */
		cur_index_per_mat[i] = object->materials[i].start * vector_size;

		/* map from original material index to new
		   GPUBufferMaterial index */
		mat_orig_to_new[object->materials[i].mat_nr] = i;
	}

	if(useVBOs) {
		success = 0;

		while(!success) {
			/* bind the buffer and discard previous data,
			   avoids stalling gpu */
			glBindBufferARB(target, buffer->id);
			glBufferDataARB(target, buffer->size, 0, GL_STATIC_DRAW_ARB);

			/* attempt to map the buffer */
			if(!(varray = glMapBufferARB(target, GL_WRITE_ONLY_ARB))) {
				/* failed to map the buffer; delete it */
				GPU_buffer_free(buffer);
				gpu_buffer_pool_delete_last(pool);
				buffer= NULL;

				/* try freeing an entry from the pool
				   and reallocating the buffer */
				if(pool->totbuf > 0) {
					gpu_buffer_pool_delete_last(pool);
					buffer = GPU_buffer_alloc(size);
				}

				/* allocation still failed; fall back
				   to legacy mode */
				if(!buffer) {
					dm->drawObject->legacy = 1;
					success = 1;
				}
			}
			else {
				success = 1;
			}
		}

		/* check legacy fallback didn't happen */
		if(dm->drawObject->legacy == 0) {
			uploaded = GL_FALSE;
			/* attempt to upload the data to the VBO */
			while(uploaded == GL_FALSE) {
				(*copy_f)(dm, varray, cur_index_per_mat, mat_orig_to_new, user);
				/* glUnmapBuffer returns GL_FALSE if
				   the data store is corrupted; retry
				   in that case */
				uploaded = glUnmapBufferARB(target);
			}
		}
		glBindBufferARB(target, 0);
	}
	else {
		/* VBO not supported, use vertex array fallback */
		if(buffer->pointer) {
			varray = buffer->pointer;
			(*copy_f)(dm, varray, cur_index_per_mat, mat_orig_to_new, user);
		}
		else {
			dm->drawObject->legacy = 1;
		}
	}

	MEM_freeN(cur_index_per_mat);

	return buffer;
}