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/*
* Copyright 2011-2014 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
#include "bake.h"
CCL_NAMESPACE_BEGIN
BakeData::BakeData(const int object, const int tri_offset, const int num_pixels):
m_object(object),
m_tri_offset(tri_offset),
m_num_pixels(num_pixels)
{
m_primitive.resize(num_pixels);
m_u.resize(num_pixels);
m_v.resize(num_pixels);
}
BakeData::~BakeData()
{
m_primitive.clear();
m_u.clear();
m_v.clear();
}
void BakeData::set(int i, int prim, float uv[2])
{
m_primitive[i] = (prim == -1 ? -1 : m_tri_offset + prim);
m_u[i] = uv[0];
m_v[i] = uv[1];
}
int BakeData::object()
{
return m_object;
}
int BakeData::size()
{
return m_num_pixels;
}
bool BakeData::is_valid(int i)
{
return m_primitive[i] != -1;
}
uint4 BakeData::data(int i)
{
return make_uint4(
m_object,
m_primitive[i],
__float_as_int(m_u[i]),
__float_as_int(m_v[i])
);
}
BakeManager::BakeManager()
{
m_bake_data = NULL;
m_is_baking = false;
need_update = true;
}
BakeManager::~BakeManager()
{
if(m_bake_data)
delete m_bake_data;
}
bool BakeManager::get_baking()
{
return m_is_baking;
}
void BakeManager::set_baking(const bool value)
{
m_is_baking = value;
}
BakeData *BakeManager::init(const int object, const int tri_offset, const int num_pixels)
{
m_bake_data = new BakeData(object, tri_offset, num_pixels);
return m_bake_data;
}
bool BakeManager::bake(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress, ShaderEvalType shader_type, BakeData *bake_data, float result[])
{
size_t limit = bake_data->size();
/* setup input for device task */
device_vector<uint4> d_input;
uint4 *d_input_data = d_input.resize(limit);
size_t d_input_size = 0;
for(size_t i = 0; i < limit; i++) {
d_input_data[d_input_size++] = bake_data->data(i);
}
if(d_input_size == 0)
return false;
/* run device task */
device_vector<float4> d_output;
d_output.resize(d_input_size);
/* needs to be up to data for attribute access */
device->const_copy_to("__data", &dscene->data, sizeof(dscene->data));
device->mem_alloc(d_input, MEM_READ_ONLY);
device->mem_copy_to(d_input);
device->mem_alloc(d_output, MEM_WRITE_ONLY);
DeviceTask task(DeviceTask::SHADER);
task.shader_input = d_input.device_pointer;
task.shader_output = d_output.device_pointer;
task.shader_eval_type = shader_type;
task.shader_x = 0;
task.shader_w = d_output.size();
task.get_cancel = function_bind(&Progress::get_cancel, &progress);
device->task_add(task);
device->task_wait();
if(progress.get_cancel()) {
device->mem_free(d_input);
device->mem_free(d_output);
m_is_baking = false;
return false;
}
device->mem_copy_from(d_output, 0, 1, d_output.size(), sizeof(float4));
device->mem_free(d_input);
device->mem_free(d_output);
/* read result */
int k = 0;
float4 *offset = (float4*)d_output.data_pointer;
size_t depth = 4;
for(size_t i = 0; i < limit; i++) {
size_t index = i * depth;
float4 out = offset[k++];
if(bake_data->is_valid(i)) {
for(size_t j=0; j < 4; j++) {
result[index + j] = out[j];
}
}
}
m_is_baking = false;
return true;
}
void BakeManager::device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
{
if(!need_update)
return;
if(progress.get_cancel()) return;
need_update = false;
}
void BakeManager::device_free(Device *device, DeviceScene *dscene)
{
}
CCL_NAMESPACE_END
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