How to use glBlendFuncSeparate for render texture

[waqas19921]

• cocos2d-x version: 3.11
• devices test on: android
• developing environments
  • NDK version: 12.1

i have used

TrianglesCommand *trianglesCommand = new TrianglesCommand();
        trianglesCommand->init(getGlobalZOrder(), textureID, getGLProgramState(),
                               BlendFunc::ALPHA_PREMULTIPLIED,
                               {&(std::vector<V3F_C4B_T2F>(_vertices))[0],
                                &(std::vector<unsigned short>(_indices))[0],
                                static_cast<int>(_vertices.size()),
                                static_cast<int>(_indices.size())}, transform, 0);

where BlendFunc::ALPHA_PREMULTIPLIED is equivalent to glBlendFuncSeparate(GL_ONE, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

but how can i achieve this glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

[minggo]

You can create an instance of BlendFunc by your self.

glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);

Why it has 4 parameters?

[waqas19921]

i want to user glBlendFuncSeparate how to use that with above params in triangle command.

[waqas19921]

@minggo i didn't understand your suggestion calling glBlendFuncSeparate() does not effect at all. you have provided setBlendFunc() with two parameters for sprite but it should also have an glBlendFuncSeparate() with four parameters so that one can set different blending modes for colors and alpha channels.