blender-archive/source/blender/compositor/operations/COM_RenderLayersBaseProg.cpp

/*
 * Copyright 2011, Blender Foundation.
 *
 * 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.
 *
 * Contributor: 
 *		Jeroen Bakker 
 *		Monique Dewanchand
 */

#include "COM_RenderLayersBaseProg.h"

#include "BLI_listbase.h"
#include "DNA_scene_types.h"

extern "C" {
	#include "RE_pipeline.h"
	#include "RE_shader_ext.h"
	#include "RE_render_ext.h"
}

RenderLayersBaseProg::RenderLayersBaseProg(int renderpass, int elementsize): NodeOperation() {
	this->renderpass = renderpass;
	this->setScene(NULL);
	this->inputBuffer = NULL;
	this->elementsize = elementsize;
}


void RenderLayersBaseProg::initExecution() {
	Scene * scene = this->getScene();
	Render *re= (scene)? RE_GetRender(scene->id.name): NULL;
	RenderResult *rr= NULL;
	
	if(re)
			rr= RE_AcquireResultRead(re);
	
	if(rr) {
		SceneRenderLayer *srl= (SceneRenderLayer*)BLI_findlink(&scene->r.layers, getLayerId());
		if(srl) {
	
			   RenderLayer *rl= RE_GetRenderLayer(rr, srl->name);
			   if(rl && rl->rectf) {
				   this->inputBuffer = RE_RenderLayerGetPass(rl, renderpass);
	
				   if (this->inputBuffer == NULL || renderpass == SCE_PASS_COMBINED) {
					   this->inputBuffer = rl->rectf;
				   }
			   }
		   }
	}
	if (re) {
		RE_ReleaseResult(re);
		re = NULL;
	}
}

void RenderLayersBaseProg::executePixel(float* output, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
	int ix = x;
	int iy = y;
	
	if (inputBuffer == NULL || ix < 0 || iy < 0 || ix >= (int)this->getWidth() || iy >= (int)this->getHeight() ) {
		output[0] = 0.0f;
		output[1] = 0.0f;
		output[2] = 0.0f;
		output[3] = 0.0f;
	} else {
		unsigned int offset = (iy*this->getWidth()+ix) * elementsize;
		if (elementsize == 1) {
			output[0] = inputBuffer[offset];
			output[1] = 0.0f;
			output[2] = 0.0f;
			output[3] = 0.0f;
		} else if (elementsize == 3){
			output[0] = inputBuffer[offset];
			output[1] = inputBuffer[offset+1];
			output[2] = inputBuffer[offset+2];
			output[3] = 1.0f;
		} else {
			output[0] = inputBuffer[offset];
			output[1] = inputBuffer[offset+1];
			output[2] = inputBuffer[offset+2];
			output[3] = inputBuffer[offset+3];
		}
	}
}

void RenderLayersBaseProg::deinitExecution() {
	this->inputBuffer = NULL;
}

void RenderLayersBaseProg::determineResolution(unsigned int resolution[], unsigned int preferredResolution[]) {
	Scene *sce= this->getScene();
	Render *re= (sce)? RE_GetRender(sce->id.name): NULL;
	RenderResult *rr= NULL;
	
	resolution[0] = 0;
	resolution[1] = 0;
	
	if(re)
			rr= RE_AcquireResultRead(re);
	
	if(rr) {
		SceneRenderLayer *srl= (SceneRenderLayer*)BLI_findlink(&sce->r.layers, getLayerId());
		if(srl) {
			   RenderLayer *rl= RE_GetRenderLayer(rr, srl->name);
			   if(rl && rl->rectf) {
				   resolution[0]=rl->rectx;
				   resolution[1]=rl->recty;
			   }
		}
	}
	
	if(re)
		 RE_ReleaseResult(re);

}