Method bind

src/SFML/Graphics/Shader.cpp:779–808

///////////////////////////////////////////////////////

////////////////////////////////////////////////////////////
void Shader::bind(const Shader* shader)
{
    const TransientContextLock lock;

    // Make sure that we can use shaders
    if (!isAvailable())
    {
        err() << "Failed to bind or unbind shader: your system doesn't support shaders "
              << "(you should test Shader::isAvailable() before trying to use the Shader class)" << std::endl;
        return;
    }

    if (shader && shader->m_shaderProgram)
    {
        // Enable the program
        glCheck(GLEXT_glUseProgramObject(castToGlHandle(shader->m_shaderProgram)));

        // Bind the textures
        shader->bindTextures();

        // Bind the current texture
        if (shader->m_currentTexture != -1)
            glCheck(GLEXT_glUniform1i(shader->m_currentTexture, 0));
    }
    else
    {
        // Bind no shader
        glCheck(GLEXT_glUseProgramObject({}));
    }
}


////////////////////////////////////////////////////////////