//--------------------------------------------------------
void CShaderNode::draw()
{
CC_NODE_DRAW_SETUP();
//传递uniform变量
CCGLProgram* shader = getShaderProgram();
shader->setUniformLocationWith2f(m_unUniformResolution, m_tagResolutionPos.x, m_tagResolutionPos.y);
shader->setUniformLocationWith1i(m_unUniformTex0, 0);
glUniform1f(m_unUniformTime, m_fTime);
//获取attribute变量
CCSize size = this->getContentSize();
float w = size.width;
float h = size.height;
ccGLBindTexture2D(m_pTexture); //绑定纹理到槽位
glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, w, h, 0); //截取屏幕数据到纹理
glEnableVertexAttribArray(m_unAttributePosition);
//传递attribute变量
GLfloat vertices[12] = {
0, 0, //左下0
w, 0, //右下1
w, h, //右上2
0, 0, //左下0
0, h, //左上3
w, h, //右上2
};
glVertexAttribPointer(m_unAttributePosition, 2, GL_FLOAT, GL_FALSE, 0, vertices);
glVertexAttrib4fv(m_unAttributeColor, m_fColor);
//绘制
glDrawArrays(GL_TRIANGLES, 0, 6);
}
void CCShaders::setBlur(CCSize nodeSize, CCSize blurSize, ccColor4F blurSubtract) {
loadCustomShader(kCCShader_blur);
CCGLProgram* p = CCShaderCache::sharedShaderCache()->programForKey(kCCShader_blur);
p->use();
p->setUniformLocationWith2f(sUniform_pos_CC_blurSize, blurSize.width / nodeSize.width, blurSize.height / nodeSize.height);
p->setUniformLocationWith4f(sUniform_pos_CC_blurSubtract, blurSubtract.r, blurSubtract.g, blurSubtract.b, blurSubtract.a);
}
static int tolua_CCGLProgram_CCGLProgram_setUniformLocationWith2f00(lua_State* tolua_S)
{
#ifndef TOLUA_RELEASE
tolua_Error tolua_err;
if (
!tolua_isusertype(tolua_S,1,"CCGLProgram",0,&tolua_err) ||
!tolua_isnumber(tolua_S,2,0,&tolua_err) ||
!tolua_isnumber(tolua_S,3,0,&tolua_err) ||
!tolua_isnumber(tolua_S,4,0,&tolua_err) ||
!tolua_isnoobj(tolua_S,5,&tolua_err)
)
goto tolua_lerror;
else
#endif
{
CCGLProgram* self = (CCGLProgram*) tolua_tousertype(tolua_S,1,0);
int location = ((int) tolua_tonumber(tolua_S,2,0));
float f1 = ((float) tolua_tonumber(tolua_S,3,0));
float f2 = ((float) tolua_tonumber(tolua_S,4,0));
#ifndef TOLUA_RELEASE
if (!self) tolua_error(tolua_S,"invalid 'self' in function 'setUniformLocationWith2f'", NULL);
#endif
{
self->setUniformLocationWith2f(location,f1,f2);
}
}
return 0;
#ifndef TOLUA_RELEASE
tolua_lerror:
tolua_error(tolua_S,"#ferror in function 'setUniformLocationWith2f'.",&tolua_err);
return 0;
#endif
}