feat(shaders): Implement FBO capture lifecycle in ShaderManager

tests/test_fbo_capture.py

@@ -0,0 +1,37 @@
+import pytest
+from unittest.mock import patch, MagicMock
+import OpenGL.GL as gl
+
+def test_shader_manager_fbo_initialization():
+ with patch("src.shader_manager.gl") as mock_gl:
+  mock_gl.glGenFramebuffers.return_value = 1
+  mock_gl.glGenTextures.return_value = 2
+  mock_gl.glCheckFramebufferStatus.return_value = mock_gl.GL_FRAMEBUFFER_COMPLETE
+  
+  from src.shader_manager import ShaderManager
+  manager = ShaderManager()
+  
+  manager.setup_capture_fbo(800, 600)
+  
+  assert manager.capture_fbo == 1
+  assert manager.capture_tex == 2
+  assert mock_gl.glGenFramebuffers.called
+  assert mock_gl.glGenTextures.called
+  assert mock_gl.glCheckFramebufferStatus.called
+
+def test_shader_manager_capture_lifecycle():
+ with patch("src.shader_manager.gl") as mock_gl:
+  mock_gl.glCheckFramebufferStatus.return_value = mock_gl.GL_FRAMEBUFFER_COMPLETE
+  from src.shader_manager import ShaderManager
+  manager = ShaderManager()
+  
+  # Ensure setup is called on first capture
+  manager.capture_begin(1024, 768)
+  assert manager.fbo_width == 1024
+  assert manager.fbo_height == 768
+  assert mock_gl.glBindFramebuffer.called
+  
+  mock_gl.glBindFramebuffer.reset_mock()
+  manager.capture_end()
+  # Verify unbind (glBindFramebuffer(..., 0))
+  mock_gl.glBindFramebuffer.assert_called_with(mock_gl.GL_FRAMEBUFFER, 0)