void OpenGLRenderManager::doRender(IVertexBuffer* _buffer, ITexture* _texture, size_t _count)
{
OpenGLVertexBuffer* buffer = static_cast<OpenGLVertexBuffer*>(_buffer);
unsigned int buffer_id = buffer->getBufferID();
MYGUI_PLATFORM_ASSERT(buffer_id, "Vertex buffer is not created");
unsigned int texture_id = 0;
if (_texture)
{
OpenGLTexture* texture = static_cast<OpenGLTexture*>(_texture);
texture_id = texture->getTextureID();
//MYGUI_PLATFORM_ASSERT(texture_id, "Texture is not created");
}
glBindTexture(GL_TEXTURE_2D, texture_id);
glBindBuffer(GL_ARRAY_BUFFER, buffer_id);
// enable vertex arrays
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_COLOR_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
// before draw, specify vertex and index arrays with their offsets
size_t offset = 0;
glVertexPointer(3, GL_FLOAT, sizeof(Vertex), (void*)offset);
offset += (sizeof(float) * 3);
glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(Vertex), (void*)offset);
offset += (4);
glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), (void*)offset);
glDrawArrays(GL_TRIANGLES, 0, _count);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindTexture(GL_TEXTURE_2D, 0);
}
