Lothario
/
axmol
mirror of https://github.com/axmolengine/axmol.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #6053 from natural-law/develop 

Solve the error effect of BlurSpriteTest in Shader Sprite.
This commit is contained in:
minggo 2014-03-29 21:42:54 +08:00
parent cad5ea2acf 77e0694883
commit a874ecf8b0
1 changed files with 47 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
tests/cpp-tests/Classes/ShaderTest/ShaderTest2.cpp
View File

@ -278,11 +278,16 @@ protected:
virtual void buildCustomUniforms();
virtual void setCustomUniforms();
protected:
Point blur_;
GLfloat sub_[4];
int _blurRadius;
Point _pixelSize;
GLuint blurLocation;
GLuint subLocation;
int _samplingRadius;
float _scale;
float _cons;
float _weightSum;
GLuint pixelSizeLocation;
GLuint coefficientLocation;
};
BlurSprite::BlurSprite()
@ -293,28 +298,56 @@ BlurSprite::BlurSprite()
void BlurSprite::buildCustomUniforms()
{
auto s = getTexture()->getContentSizeInPixels();
blur_ = Point(1/s.width, 1/s.height);
sub_[0] = sub_[1] = sub_[2] = sub_[3] = 0;
_blurRadius = 0;
_pixelSize = Point(1/s.width, 1/s.height);
_samplingRadius = 0;
setBlurSize(10.0f);
auto program = getShaderProgram();
subLocation = program->getUniformLocation("substract");
blurLocation = program->getUniformLocation("blurSize");
pixelSizeLocation = program->getUniformLocation("onePixelSize");
coefficientLocation = program->getUniformLocation("gaussianCoefficient");
}
void BlurSprite::setCustomUniforms()
{
auto program = getShaderProgram();
program->setUniformLocationWith2f(blurLocation, blur_.x, blur_.y);
program->setUniformLocationWith4fv(subLocation, sub_, 1);
program->setUniformLocationWith2f(pixelSizeLocation, _pixelSize.x, _pixelSize.y);
program->setUniformLocationWith4f(coefficientLocation, _samplingRadius, _scale,_cons,_weightSum);
}
void BlurSprite::setBlurSize(float f)
{
auto s = getTexture()->getContentSizeInPixels();
if(_blurRadius == (int)f)
return;
_blurRadius = (int)f;
blur_ = Point(1/s.width, 1/s.height);
blur_ = blur_ * f;
_samplingRadius = _blurRadius;
if (_samplingRadius > 10)
{
_samplingRadius = 10;
}
if (_blurRadius > 0)
{
float sigma = _blurRadius / 2.0f;
_scale = -0.5f / (sigma * sigma);
_cons = -1.0f * _scale / 3.141592f;
_weightSum = -_cons;
float weight;
int squareX;
for(int dx = 0; dx <= _samplingRadius; ++dx)
{
squareX = dx * dx;
weight = _cons * exp(squareX * _scale);
_weightSum += 2.0 * weight;
for (int dy = 1; dy <= _samplingRadius; ++dy)
{
weight = _cons * exp((squareX + dy * dy) * _scale);
_weightSum += 4.0 * weight;
}
}
}
log("_blurRadius:%d",_blurRadius);
}
class NoiseSprite : public ShaderSprite, public ShaderSpriteCreator<NoiseSprite>