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/*
* 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_TextureOperation.h"
#include "BLI_listbase.h"
#include "DNA_scene_types.h"
TextureBaseOperation::TextureBaseOperation(): NodeOperation() {
this->addInputSocket(COM_DT_VECTOR);//offset
this->addInputSocket(COM_DT_VECTOR);//size
this->texture = NULL;
this->inputSize = NULL;
this->inputOffset = NULL;
}
TextureOperation::TextureOperation() : TextureBaseOperation() {
this->addOutputSocket(COM_DT_COLOR);
}
TextureAlphaOperation::TextureAlphaOperation() : TextureBaseOperation() {
this->addOutputSocket(COM_DT_VALUE);
}
void TextureBaseOperation::initExecution() {
this->inputOffset = getInputSocketReader(0);
this->inputSize = getInputSocketReader(1);
}
void TextureBaseOperation::deinitExecution() {
this->inputSize = NULL;
this->inputOffset = NULL;
}
void TextureBaseOperation::determineResolution(unsigned int resolution[], unsigned int preferredResolution[]) {
if (preferredResolution[0] == 0 || preferredResolution[1] == 0) {
resolution[0] = COM_DEFAULT_RESOLUTION_WIDTH;
resolution[1] = COM_DEFAULT_RESOLUTION_HEIGHT;
} else {
resolution[0] = preferredResolution[0];
resolution[1] = preferredResolution[1];
}
}
void TextureAlphaOperation::executePixel(float *color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
TextureBaseOperation::executePixel(color, x, y, sampler, inputBuffers);
color[0] = color[3];
color[1] = 0.0f;
color[2] = 0.0f;
color[3] = 0.0f;
}
void TextureBaseOperation::executePixel(float *color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
float textureSize[4];
float textureOffset[4];
float vec[3];
int retval;
const float cx = this->getWidth()/2;
const float cy = this->getHeight()/2;
const float u = (cx-x)/this->getWidth()*2;
const float v = (cy-y)/this->getHeight()*2;
this->inputSize->read(textureSize, x, y, sampler, inputBuffers);
this->inputOffset->read(textureOffset, x, y, sampler, inputBuffers);
vec[0]= textureSize[0]*(u + textureOffset[0]);
vec[1]= textureSize[1]*(v + textureOffset[1]);
vec[2]= textureSize[2]*textureOffset[2];
retval= multitex_ext(this->texture, vec, NULL, NULL, 0, &texres);
if(texres.talpha)
color[3]= texres.ta;
else
color[3]= texres.tin;
if((retval & TEX_RGB)) {
color[0]= texres.tr;
color[1]= texres.tg;
color[2]= texres.tb;
}
else color[0]= color[1]= color[2]= color[3];
}
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