void CSpriteRGBA::shaderMulColor(float r, float g, float b, float a)
{
CCGLProgram *pShaders = new CCGLProgram;
pShaders->initWithVertexShaderByteArray(ccPositionTextureColor_vert, SPRITERGBA_SHADER_MUL_COLOR_FSH);
CHECK_GL_ERROR_DEBUG();
pShaders->addAttribute(kCCAttributeNamePosition, kCCVertexAttrib_Position);
pShaders->addAttribute(kCCAttributeNameColor, kCCVertexAttrib_Color);
pShaders->addAttribute(kCCAttributeNameTexCoord, kCCVertexAttrib_TexCoords);
CHECK_GL_ERROR_DEBUG();
pShaders->link();
CHECK_GL_ERROR_DEBUG();
pShaders->updateUniforms();
CHECK_GL_ERROR_DEBUG();
GLint nDotColorLocation = pShaders->getUniformLocationForName("v_dotcolor");
pShaders->setUniformLocationWith4f(nDotColorLocation, r, g, b, a);
scale9Image->setShaderProgram(pShaders);
CHECK_GL_ERROR_DEBUG();
pShaders->release();
}
int FragmentEffect::addEffectNode(CCNode* pNode)
{
do
{
CCGLProgram* program = new CCGLProgram();
GLchar* pszFragSource =
"#ifdef GL_ES \n \
precision mediump float; \n \
#endif \n \
uniform sampler2D u_texture; \n \
varying vec2 v_texCoord; \n \
varying vec4 v_fragmentColor; \n \
uniform mat4 matrixEffect; \n \
void main(void) \n \
{ \n \
gl_FragColor = texture2D(u_texture, v_texCoord)*matrixEffect; \n \
}";
program->initWithVertexShaderByteArray(ccPositionTextureColor_vert, //顶点找色器,这里是引擎自带的
pszFragSource); //像素找色器,这里是自己写的
//将生成的shader程序传给CCSprite类
pNode->setShaderProgram(program);
//要release一次,在上面的setShaderProgram将pProgram托管给CCSprite
//setShaderProgram只调用了pProgram->retain(),没有release(),现在pProgram的m_uReference是2
program->release();
CHECK_GL_ERROR_DEBUG();
//启用顶点着色器的attribute变量，坐标、纹理坐标、颜色 ,去掉其中一个或两个还能工作
program->addAttribute(kCCAttributeNamePosition, kCCVertexAttrib_Position);
program->addAttribute(kCCAttributeNameColor, kCCVertexAttrib_Color);
program->addAttribute(kCCAttributeNameTexCoord, kCCVertexAttrib_TexCoords);
CHECK_GL_ERROR_DEBUG();
//自定义着色器链接
program->link();
CHECK_GL_ERROR_DEBUG();
// 设置移动、缩放、旋转矩阵
program->updateUniforms();
CHECK_GL_ERROR_DEBUG();
EffectListNode listNode;
listNode._pNode = pNode;
listNode._effectSelect = 0;
listNode._uniformMatrix = program->getUniformLocationForName("matrixEffect");
program->use();
program->setUniformLocationWithMatrix4fv(listNode._uniformMatrix,
m_matrices[0]._matrix,
1);
m_nodeList.push_back(listNode);
return m_nodeList.size()-1;
} while (0);
return -1;
}