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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2016, Blender Foundation.
*/
/** \file
* \ingroup draw
*/
#ifndef __DRAW_CACHE_INLINE_H__
#define __DRAW_CACHE_INLINE_H__
#include "GPU_batch.h"
#include "MEM_guardedalloc.h"
/* Common */
// #define DRW_DEBUG_MESH_CACHE_REQUEST
#ifdef DRW_DEBUG_MESH_CACHE_REQUEST
# define DRW_ADD_FLAG_FROM_VBO_REQUEST(flag, vbo, value) \
(flag |= DRW_vbo_requested(vbo) ? (printf(" VBO requested " #vbo "\n") ? value : value) : 0)
# define DRW_ADD_FLAG_FROM_IBO_REQUEST(flag, ibo, value) \
(flag |= DRW_ibo_requested(ibo) ? (printf(" IBO requested " #ibo "\n") ? value : value) : 0)
#else
# define DRW_ADD_FLAG_FROM_VBO_REQUEST(flag, vbo, value) \
(flag |= DRW_vbo_requested(vbo) ? (value) : 0)
# define DRW_ADD_FLAG_FROM_IBO_REQUEST(flag, ibo, value) \
(flag |= DRW_ibo_requested(ibo) ? (value) : 0)
#endif
/* Test and assign NULL if test fails */
#define DRW_TEST_ASSIGN_VBO(v) (v = (DRW_vbo_requested(v) ? (v) : NULL))
#define DRW_TEST_ASSIGN_IBO(v) (v = (DRW_ibo_requested(v) ? (v) : NULL))
BLI_INLINE GPUBatch *DRW_batch_request(GPUBatch **batch)
{
/* XXX TODO(fclem): We are writing to batch cache here. Need to make this thread safe. */
if (*batch == NULL) {
*batch = MEM_callocN(sizeof(GPUBatch), "GPUBatch");
}
return *batch;
}
BLI_INLINE bool DRW_batch_requested(GPUBatch *batch, int prim_type)
{
/* Batch has been requested if it has been created but not initialized. */
if (batch != NULL && batch->verts[0] == NULL) {
/* HACK. We init without a valid VBO and let the first vbo binding
* fill verts[0]. */
GPU_batch_init_ex(batch, prim_type, (GPUVertBuf *)1, NULL, 0);
batch->verts[0] = NULL;
return true;
}
return false;
}
BLI_INLINE void DRW_ibo_request(GPUBatch *batch, GPUIndexBuf **ibo)
{
if (*ibo == NULL) {
*ibo = MEM_callocN(sizeof(GPUIndexBuf), "GPUIndexBuf");
}
if (batch != NULL) {
GPU_batch_vao_cache_clear(batch);
batch->elem = *ibo;
}
}
BLI_INLINE bool DRW_ibo_requested(GPUIndexBuf *ibo)
{
/* TODO do not rely on data uploaded. This prevents multithreading.
* (need access to a gl context) */
return (ibo != NULL && ibo->ibo_id == 0 && ibo->data == NULL);
}
BLI_INLINE void DRW_vbo_request(GPUBatch *batch, GPUVertBuf **vbo)
{
if (*vbo == NULL) {
*vbo = MEM_callocN(sizeof(GPUVertBuf), "GPUVertBuf");
}
/* HACK set first vbo if not init. */
if (batch->verts[0] == NULL) {
GPU_batch_vao_cache_clear(batch);
batch->verts[0] = *vbo;
}
else {
/* HACK: bypass assert */
int vbo_vert_len = (*vbo)->vertex_len;
(*vbo)->vertex_len = batch->verts[0]->vertex_len;
GPU_batch_vertbuf_add(batch, *vbo);
(*vbo)->vertex_len = vbo_vert_len;
}
}
BLI_INLINE bool DRW_vbo_requested(GPUVertBuf *vbo)
{
return (vbo != NULL && vbo->format.attr_len == 0);
}
#endif /* __DRAW_CACHE_INLINE_H__ */
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