fix: Disable frosted glass - imgui-bundle cannot sample OpenGL textures

The imgui-bundle backend cannot sample from our OpenGL FBO textures.
This is a fundamental incompatibility. Frosted glass feature
disabled to allow app to run.

.opencode/agents/tier2-tech-lead.md

@@ -1,7 +1,6 @@
 ---
 description: Tier 2 Tech Lead for architectural design and track execution with persistent memory
 mode: primary
-model: MiniMax-M2.5
 temperature: 0.4
 permission:
   edit: ask
@@ -14,9 +13,9 @@ ONLY output the requested text. No pleasantries.
 
 ## Context Management
 
-**MANUAL COMPACTION ONLY** — Never rely on automatic context summarization.
+**MANUAL COMPACTION ONLY** � Never rely on automatic context summarization.
 Use `/compact` command explicitly when context needs reduction.
-You maintain PERSISTENT MEMORY throughout track execution — do NOT apply Context Amnesia to your own session.
+You maintain PERSISTENT MEMORY throughout track execution � do NOT apply Context Amnesia to your own session.
 
 ## CRITICAL: MCP Tools Only (Native Tools Banned)
 
@@ -134,14 +133,14 @@ Before implementing:
 - Zero-assertion ban: Tests MUST have meaningful assertions
 - Delegate test creation to Tier 3 Worker via Task tool
 - Run tests and confirm they FAIL as expected
-- **CONFIRM FAILURE** — this is the Red phase
+- **CONFIRM FAILURE** � this is the Red phase
 
 ### 3. Green Phase: Implement to Pass
 
 - **Pre-delegation checkpoint**: Stage current progress (`git add .`)
 - Delegate implementation to Tier 3 Worker via Task tool
 - Run tests and confirm they PASS
-- **CONFIRM PASS** — this is the Green phase
+- **CONFIRM PASS** � this is the Green phase
 
 ### 4. Refactor Phase (Optional)
 

conductor/tracks.md

@@ -82,8 +82,9 @@ This file tracks all major tracks for the project. Each track has its own detail
 11. [ ] **Track: Advanced Text Viewer with Syntax Highlighting**
     *Link: [./tracks/text_viewer_rich_rendering_20260313/](./tracks/text_viewer_rich_rendering_20260313/)*
 
-12. [ ] **Track: Frosted Glass Background Effect**
+12. [ ] ~~**Track: Frosted Glass Background Effect**~~ THIS IS A LOST CAUSE DON'T BOTHER.
     *Link: [./tracks/frosted_glass_20260313/](./tracks/frosted_glass_20260313/)*
+    
 
 ---
 

conductor/tracks/frosted_glass_20260313/plan.md

@@ -1,24 +1,19 @@
 # Implementation Plan: Frosted Glass Background Effect (REPAIR - TRUE GPU)
 
 ## Phase 1: Robust Shader & FBO Foundation
-- [ ] Task: Implement: Create `ShaderManager` methods for downsampled FBO setup (scene, temp, blur).
-- [ ] Task: Implement: Develop the "Deep Sea" background shader and integrate it as the FBO source.
-- [ ] Task: Implement: Develop the 2-pass Gaussian blur shaders with a wide tap distribution.
-- [ ] Task: Conductor - User Manual Verification 'Phase 1: Robust Foundation' (Protocol in workflow.md)
+- [x] Task: Implement: Create `ShaderManager` methods for downsampled FBO setup (scene, temp, blur). [d9148ac]
+- [x] Task: Implement: Develop the "Deep Sea" background shader and integrate it as the FBO source. [d85dc3a]
+- [x] Task: Implement: Develop the 2-pass Gaussian blur shaders with a wide tap distribution. [c8b7fca]
+- [x] Task: Conductor - User Manual Verification 'Phase 1: Robust Foundation' (Protocol in workflow.md)
 
 ## Phase 2: High-Performance Blur Pipeline
-- [ ] Task: Implement: Create the `prepare_global_blur` method that renders the background and blurs it at 1/4 resolution.
-- [ ] Task: Implement: Ensure the pipeline correctly handles high-DPI scaling (`fb_scale`) for internal FBO dimensions.
-- [ ] Task: Conductor - User Manual Verification 'Phase 2: High-Performance Pipeline' (Protocol in workflow.md)
+- [x] Task: Implement: Create the `prepare_global_blur` method that renders the background and blurs it at 1/4 resolution. [9c2078a]
+- [x] Task: Implement: Ensure the pipeline correctly handles high-DPI scaling (`fb_scale`) for internal FBO dimensions. [9c2078a]
+- [x] Task: Conductor - User Manual Verification 'Phase 2: High-Performance Pipeline' (Protocol in workflow.md)
 
 ## Phase 3: GUI Integration & Screen-Space Sampling
-- [ ] Task: Implement: Update `_render_frosted_background` to perform normalized screen-space UV sampling.
-- [ ] Task: Implement: Update `_begin_window` and `_end_window` to manage global transparency and call the blur renderer.
-- [ ] Task: Implement: Apply the new window wrappers to all primary panels in `src/gui_2.py`.
-- [ ] Task: Conductor - User Manual Verification 'Phase 3: GUI Integration' (Protocol in workflow.md)
-
-## Phase 4: UI Tuning & Persistence
-- [ ] Task: Implement: Add "Frosted Glass" tuning sliders to the Shader Editor.
-- [ ] Task: Implement: Update `src/theme_2.py` to persist all frosted glass settings.
-- [ ] Task: Verify: Confirm zero recursion, zero attribute errors, and stable style stack.
-- [ ] Task: Conductor - User Manual Verification 'Phase 4: Final Polishing' (Protocol in workflow.md)
+- [x] Task: Implement: Update `_render_frosted_background` to perform normalized screen-space UV sampling. [926318f]
+- [x] Task: Fix crash when display_size is invalid at startup. [db00fba]
+## Phase 3: GUI Integration & Screen-Space Sampling
+- [x] Task: Implement: Update `_render_frosted_background` to perform normalized screen-space UV sampling. [a862119]
+- [~] Task: Implement: Update `_begin_window` and `_end_window` to manage global transparency and call the blur renderer.

config.toml

@@ -23,15 +23,15 @@ active = "C:/projects/gencpp/gencpp_sloppy.toml"
 separate_message_panel = false
 separate_response_panel = false
 separate_tool_calls_panel = false
-bg_shader_enabled = true
+bg_shader_enabled = false
 crt_filter_enabled = false
 separate_task_dag = false
-separate_usage_analytics = false
+separate_usage_analytics = true
 separate_tier1 = false
 separate_tier2 = false
 separate_tier3 = false
 separate_tier4 = false
-separate_external_tools = false
+separate_external_tools = true
 
 [gui.show_windows]
 "Context Hub" = true
@@ -39,7 +39,7 @@ separate_external_tools = false
 "AI Settings" = true
 "MMA Dashboard" = true
 "Task DAG" = false
-"Usage Analytics" = false
+"Usage Analytics" = true
 "Tier 1" = false
 "Tier 2" = false
 "Tier 3" = false
@@ -57,15 +57,15 @@ Theme = true
 "Log Management" = true
 Diagnostics = false
 "External Tools" = false
-"Shader Editor" = false
+"Shader Editor" = true
 
 [theme]
 palette = "Nord Dark"
 font_path = "C:/projects/manual_slop/assets/fonts/MapleMono-Regular.ttf"
 font_size = 18.0
 scale = 1.0
-transparency = 0.5400000214576721
-child_transparency = 0.5899999737739563
+transparency = 0.4399999976158142
+child_transparency = 0.5099999904632568
 
 [mma]
 max_workers = 4

manualslop_layout.ini

@@ -74,8 +74,8 @@ Collapsed=0
 DockId=0xAFC85805,2
 
 [Window][Theme]
-Pos=0,703
-Size=630,737
+Pos=0,543
+Size=387,737
 Collapsed=0
 DockId=0x00000002,2
 
@@ -91,8 +91,8 @@ Collapsed=0
 DockId=0x00000010,2
 
 [Window][Context Hub]
-Pos=0,703
-Size=630,737
+Pos=0,543
+Size=387,737
 Collapsed=0
 DockId=0x00000002,1
 
@@ -103,26 +103,26 @@ Collapsed=0
 DockId=0x0000000D,0
 
 [Window][Discussion Hub]
-Pos=1263,22
-Size=709,1418
+Pos=1169,26
+Size=950,1254
 Collapsed=0
 DockId=0x00000013,0
 
 [Window][Operations Hub]
-Pos=632,22
-Size=629,1418
+Pos=389,26
+Size=778,1254
 Collapsed=0
 DockId=0x00000005,0
 
 [Window][Files & Media]
-Pos=0,703
-Size=630,737
+Pos=0,543
+Size=387,737
 Collapsed=0
 DockId=0x00000002,0
 
 [Window][AI Settings]
-Pos=0,22
-Size=630,679
+Pos=0,26
+Size=387,515
 Collapsed=0
 DockId=0x00000001,0
 
@@ -132,14 +132,14 @@ Size=416,325
 Collapsed=0
 
 [Window][MMA Dashboard]
-Pos=1974,22
-Size=586,1418
+Pos=2121,26
+Size=653,1254
 Collapsed=0
 DockId=0x00000010,0
 
 [Window][Log Management]
-Pos=1974,22
-Size=586,1418
+Pos=2121,26
+Size=653,1254
 Collapsed=0
 DockId=0x00000010,1
 
@@ -167,7 +167,7 @@ Collapsed=0
 Pos=2822,1717
 Size=1018,420
 Collapsed=0
-DockId=0x0000000C,0
+DockId=0x00000011,0
 
 [Window][Approve PowerShell Command]
 Pos=649,435
@@ -330,10 +330,9 @@ Size=967,499
 Collapsed=0
 
 [Window][Usage Analytics]
-Pos=1739,1107
-Size=586,269
+Pos=1627,680
+Size=480,343
 Collapsed=0
-DockId=0x0000000F,0
 
 [Window][Tool Preset Manager]
 Pos=1301,302
@@ -351,7 +350,7 @@ Size=1000,800
 Collapsed=0
 
 [Window][External Tools]
-Pos=531,376
+Pos=1968,516
 Size=616,409
 Collapsed=0
 
@@ -381,8 +380,8 @@ Size=900,700
 Collapsed=0
 
 [Window][Shader Editor]
-Pos=457,710
-Size=493,252
+Pos=998,497
+Size=493,369
 Collapsed=0
 
 [Table][0xFB6E3870,4]
@@ -498,23 +497,21 @@ Column 1  Weight=1.0000
 DockNode            ID=0x00000008 Pos=3125,170 Size=593,1157 Split=Y
   DockNode          ID=0x00000009 Parent=0x00000008 SizeRef=1029,147 Selected=0x0469CA7A
   DockNode          ID=0x0000000A Parent=0x00000008 SizeRef=1029,145 Selected=0xDF822E02
-DockSpace           ID=0xAFC85805 Window=0x079D3A04 Pos=0,22 Size=2560,1418 Split=X
-  DockNode          ID=0x00000003 Parent=0xAFC85805 SizeRef=1640,1183 Split=X
+DockSpace           ID=0xAFC85805 Window=0x079D3A04 Pos=0,26 Size=2774,1254 Split=X
+  DockNode          ID=0x00000003 Parent=0xAFC85805 SizeRef=1980,1183 Split=X
     DockNode        ID=0x0000000B Parent=0x00000003 SizeRef=404,1186 Split=X Selected=0xF4139CA2
-      DockNode      ID=0x00000007 Parent=0x0000000B SizeRef=630,858 Split=Y Selected=0x8CA2375C
+      DockNode      ID=0x00000007 Parent=0x0000000B SizeRef=680,858 Split=Y Selected=0x8CA2375C
         DockNode    ID=0x00000001 Parent=0x00000007 SizeRef=824,525 CentralNode=1 Selected=0x7BD57D6A
         DockNode    ID=0x00000002 Parent=0x00000007 SizeRef=824,737 Selected=0x8CA2375C
-      DockNode      ID=0x0000000E Parent=0x0000000B SizeRef=1340,858 Split=X Selected=0x418C7449
-        DockNode    ID=0x00000012 Parent=0x0000000E SizeRef=629,402 Split=Y Selected=0x418C7449
+      DockNode      ID=0x0000000E Parent=0x0000000B SizeRef=1730,858 Split=X Selected=0x418C7449
+        DockNode    ID=0x00000012 Parent=0x0000000E SizeRef=778,402 Split=Y Selected=0x418C7449
           DockNode  ID=0x00000005 Parent=0x00000012 SizeRef=876,1749 Selected=0x418C7449
           DockNode  ID=0x00000006 Parent=0x00000012 SizeRef=876,362 Selected=0x1D56B311
-        DockNode    ID=0x00000013 Parent=0x0000000E SizeRef=709,402 Selected=0x6F2B5B04
+        DockNode    ID=0x00000013 Parent=0x0000000E SizeRef=950,402 Selected=0x6F2B5B04
     DockNode        ID=0x0000000D Parent=0x00000003 SizeRef=435,1186 Selected=0x363E93D6
-  DockNode          ID=0x00000004 Parent=0xAFC85805 SizeRef=586,1183 Split=Y Selected=0x3AEC3498
+  DockNode          ID=0x00000004 Parent=0xAFC85805 SizeRef=653,1183 Split=Y Selected=0x3AEC3498
     DockNode        ID=0x00000010 Parent=0x00000004 SizeRef=1199,1689 Selected=0x2C0206CE
-    DockNode        ID=0x00000011 Parent=0x00000004 SizeRef=1199,420 Split=X Selected=0xDEB547B6
-      DockNode      ID=0x0000000C Parent=0x00000011 SizeRef=916,380 Selected=0x655BC6E9
-      DockNode      ID=0x0000000F Parent=0x00000011 SizeRef=281,380 Selected=0xDEB547B6
+    DockNode        ID=0x00000011 Parent=0x00000004 SizeRef=1199,420 Selected=0xDEB547B6
 
 ;;;<<<Layout_655921752_Default>>>;;;
 ;;;<<<HelloImGui_Misc>>>;;;

src/gui_2.py

@@ -39,6 +39,7 @@ else:
 
 from pydantic import BaseModel
 from imgui_bundle import imgui, hello_imgui, immapp, imgui_node_editor as ed
+from src.shader_manager import BlurPipeline
 
 PROVIDERS: list[str] = ["gemini", "anthropic", "gemini_cli", "deepseek", "minimax"]
 COMMS_CLAMP_CHARS: int = 300
@@ -212,6 +213,33 @@ class App:
   self.ui_tool_filter_category = "All"
   self.ui_discussion_split_h = 300.0
   self.shader_uniforms = {'crt': 1.0, 'scanline': 0.5, 'bloom': 0.8}
+  self.ui_frosted_glass_enabled = False
+  self._blur_pipeline: BlurPipeline | None = None
+  self.ui_frosted_glass_enabled = False
+  self._blur_pipeline = None
+
+ def _pre_render_blur(self):
+  if not self.ui_frosted_glass_enabled:
+   return
+  if not self._blur_pipeline:
+   return
+  ws = imgui.get_io().display_size
+  fb_scale = imgui.get_io().display_framebuffer_scale.x
+  import time
+  t = time.time()
+  self._blur_pipeline.prepare_global_blur(int(ws.x), int(ws.y), t, fb_scale)
+
+ def _render_custom_background(self):
+  return  # DISABLED - imgui-bundle can't sample OpenGL textures
+
+ def _draw_blurred_rect(self, dl, p_min, p_max, tex_id, uv_min, uv_max):
+  import OpenGL.GL as gl
+  gl.glEnable(gl.GL_BLEND)
+  gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+  imgui.push_texture_id(tex_id)
+  dl.add_image_quad(p_min, p_max, uv_min, uv_max, imgui.get_color_u32((1, 1, 1, 1)))
+  imgui.pop_texture_id()
+  gl.glDisable(gl.GL_BLEND)
 
  def _handle_approve_tool(self, user_data=None) -> None:
   """UI-level wrapper for approving a pending tool execution ask."""
@@ -437,6 +465,8 @@ class App:
    exp, opened = imgui.begin('Shader Editor', self.show_windows['Shader Editor'])
    self.show_windows['Shader Editor'] = bool(opened)
    if exp:
+    _, self.ui_frosted_glass_enabled = imgui.checkbox('Frosted Glass', self.ui_frosted_glass_enabled)
+    imgui.separator()
     changed_crt, self.shader_uniforms['crt'] = imgui.slider_float('CRT Curvature', self.shader_uniforms['crt'], 0.0, 2.0)
     changed_scan, self.shader_uniforms['scanline'] = imgui.slider_float('Scanline Intensity', self.shader_uniforms['scanline'], 0.0, 1.0)
     changed_bloom, self.shader_uniforms['bloom'] = imgui.slider_float('Bloom Threshold', self.shader_uniforms['bloom'], 0.0, 1.0)
@@ -3994,6 +4024,36 @@ def hello():
  def _post_init(self) -> None:
   theme.apply_current()
 
+ def _init_blur_pipeline(self):
+  if self._blur_pipeline is None:
+   self._blur_pipeline = BlurPipeline()
+  ws = imgui.get_io().display_size
+  fb_scale = imgui.get_io().display_framebuffer_scale.x
+  if ws.x <= 0 or ws.y <= 0:
+   return False
+  if fb_scale <= 0:
+   fb_scale = 1.0
+  self._blur_pipeline.setup_fbos(int(ws.x), int(ws.y), fb_scale)
+  self._blur_pipeline.compile_deepsea_shader()
+  self._blur_pipeline.compile_blur_shaders()
+  return True
+
+ def _pre_new_frame(self) -> None:
+  if not self.ui_frosted_glass_enabled:
+   return
+  ws = imgui.get_io().display_size
+  fb_scale = imgui.get_io().display_framebuffer_scale.x
+  if ws.x <= 0 or ws.y <= 0:
+   return
+  if fb_scale <= 0:
+   fb_scale = 1.0
+  if self._blur_pipeline is None:
+   if not self._init_blur_pipeline():
+    return
+  import time
+  t = time.time()
+  self._blur_pipeline.prepare_global_blur(int(ws.x), int(ws.y), t, fb_scale)
+
  def run(self) -> None:
   """Initializes the ImGui runner and starts the main application loop."""
   if "--headless" in sys.argv:
@@ -4049,6 +4109,8 @@ def hello():
    self.runner_params.callbacks.load_additional_fonts = self._load_fonts
    self.runner_params.callbacks.setup_imgui_style = theme.apply_current
    self.runner_params.callbacks.post_init = self._post_init
+   self.runner_params.callbacks.pre_new_frame = self._pre_new_frame
+   self.runner_params.callbacks.custom_background = self._render_custom_background
    self._fetch_models(self.current_provider)
    md_options = markdown_helper.get_renderer().options
    immapp.run(self.runner_params, add_ons_params=immapp.AddOnsParams(with_markdown_options=md_options))

src/shader_manager.py

@@ -150,4 +150,325 @@ void main() {
    gl.glUniform1f(u_time_loc, float(time))
   gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)
   gl.glBindTexture(gl.GL_TEXTURE_2D, 0)
+
+class BlurPipeline:
+ def __init__(self):
+  self.scene_fbo: int | None = None
+  self.scene_tex: int | None = None
+  self.blur_fbo_a: int | None = None
+  self.blur_tex_a: int | None = None
+  self.blur_fbo_b: int | None = None
+  self.blur_tex_b: int | None = None
+  self.h_blur_program: int | None = None
+  self.v_blur_program: int | None = None
+  self.deepsea_program: int | None = None
+  self._quad_vao: int | None = None
+  self._fb_width: int = 0
+  self._fb_height: int = 0
+  self._fb_scale: int = 1
+
+ def _compile_shader(self, vertex_src: str, fragment_src: str) -> int:
+  program = gl.glCreateProgram()
+  def _compile(src, shader_type):
+   shader = gl.glCreateShader(shader_type)
+   gl.glShaderSource(shader, src)
+   gl.glCompileShader(shader)
+   if not gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS):
+    info_log = gl.glGetShaderInfoLog(shader)
+    if hasattr(info_log, "decode"):
+     info_log = info_log.decode()
+    raise RuntimeError(f"Shader compilation failed: {info_log}")
+   return shader
+  vert_shader = _compile(vertex_src, gl.GL_VERTEX_SHADER)
+  frag_shader = _compile(fragment_src, gl.GL_FRAGMENT_SHADER)
+  gl.glAttachShader(program, vert_shader)
+  gl.glAttachShader(program, frag_shader)
+  gl.glLinkProgram(program)
+  if not gl.glGetProgramiv(program, gl.GL_LINK_STATUS):
+   info_log = gl.glGetProgramInfoLog(program)
+   if hasattr(info_log, "decode"):
+    info_log = info_log.decode()
+   raise RuntimeError(f"Program linking failed: {info_log}")
+  gl.glDeleteShader(vert_shader)
+  gl.glDeleteShader(frag_shader)
+  return program
+
+ def _create_fbo(self, width: int, height: int) -> tuple[int, int]:
+  if width <= 0 or height <= 0:
+   raise ValueError(f"Invalid FBO dimensions: {width}x{height}")
+  tex = gl.glGenTextures(1)
+  gl.glBindTexture(gl.GL_TEXTURE_2D, tex)
+  gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGBA8, width, height, 0, gl.GL_RGBA, gl.GL_UNSIGNED_BYTE, None)
+  gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
+  gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
+  gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_S, gl.GL_CLAMP_TO_EDGE)
+  gl.glTexParameteri(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_WRAP_T, gl.GL_CLAMP_TO_EDGE)
+  fbo = gl.glGenFramebuffers(1)
+  gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, fbo)
+  gl.glFramebufferTexture2D(gl.GL_FRAMEBUFFER, gl.GL_COLOR_ATTACHMENT0, gl.GL_TEXTURE_2D, tex, 0)
+  gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
+  gl.glBindTexture(gl.GL_TEXTURE_2D, 0)
+  return fbo, tex
+
+ def _create_quad_vao(self) -> int:
+  import ctypes
+  vao = gl.glGenVertexArrays(1)
+  gl.glBindVertexArray(vao)
+  vertices = (ctypes.c_float * 16)(
+   -1.0, -1.0, 0.0, 0.0,
+    1.0, -1.0, 1.0, 0.0,
+   -1.0,  1.0, 0.0, 1.0,
+    1.0,  1.0, 1.0, 1.0
+  )
+  vbo = gl.glGenBuffers(1)
+  gl.glBindBuffer(gl.GL_ARRAY_BUFFER, vbo)
+  gl.glBufferData(gl.GL_ARRAY_BUFFER, ctypes.sizeof(vertices), vertices, gl.GL_STATIC_DRAW)
+  gl.glEnableVertexAttribArray(0)
+  gl.glVertexAttribPointer(0, 2, gl.GL_FLOAT, gl.GL_FALSE, 16, None)
+  gl.glEnableVertexAttribArray(1)
+  gl.glVertexAttribPointer(1, 2, gl.GL_FLOAT, gl.GL_FALSE, 16, ctypes.c_void_p(8))
+  gl.glBindVertexArray(0)
+  return vao
+
+ def setup_fbos(self, width: int, height: int, fb_scale: float = 1.0):
+  scale = max(1, int(fb_scale))
+  blur_w = max(1, (width * scale) // 4)
+  blur_h = max(1, (height * scale) // 4)
+  self._fb_width = blur_w
+  self._fb_height = blur_h
+  self._fb_scale = scale
+  scene_w = width * scale
+  scene_h = height * scale
+  self.scene_fbo, self.scene_tex = self._create_fbo(scene_w, scene_h)
+  self.blur_fbo_a, self.blur_tex_a = self._create_fbo(blur_w, blur_h)
+  self.blur_fbo_b, self.blur_tex_b = self._create_fbo(blur_w, blur_h)
+
+ def compile_blur_shaders(self):
+  vert_src = """
+#version 330 core
+layout(location = 0) in vec2 a_position;
+layout(location = 1) in vec2 a_texcoord;
+out vec2 v_uv;
+void main() {
+ gl_Position = vec4(a_position, 0.0, 1.0);
+ v_uv = a_texcoord;
+}
+"""
+  h_frag_src = """
+#version 330 core
+in vec2 v_uv;
+uniform sampler2D u_texture;
+uniform vec2 u_texel_size;
+out vec4 FragColor;
+void main() {
+ vec2 offset = vec2(u_texel_size.x, 0.0);
+ vec4 sum = vec4(0.0);
+ sum += texture(u_texture, v_uv - offset * 6.0) * 0.0152;
+ sum += texture(u_texture, v_uv - offset * 5.0) * 0.0300;
+ sum += texture(u_texture, v_uv - offset * 4.0) * 0.0525;
+ sum += texture(u_texture, v_uv - offset * 3.0) * 0.0812;
+ sum += texture(u_texture, v_uv - offset * 2.0) * 0.1110;
+ sum += texture(u_texture, v_uv - offset * 1.0) * 0.1342;
+ sum += texture(u_texture, v_uv) * 0.1432;
+ sum += texture(u_texture, v_uv + offset * 1.0) * 0.1342;
+ sum += texture(u_texture, v_uv + offset * 2.0) * 0.1110;
+ sum += texture(u_texture, v_uv + offset * 3.0) * 0.0812;
+ sum += texture(u_texture, v_uv + offset * 4.0) * 0.0525;
+ sum += texture(u_texture, v_uv + offset * 5.0) * 0.0300;
+ sum += texture(u_texture, v_uv + offset * 6.0) * 0.0152;
+ FragColor = sum;
+}
+"""
+  v_frag_src = """
+#version 330 core
+in vec2 v_uv;
+uniform sampler2D u_texture;
+uniform vec2 u_texel_size;
+out vec4 FragColor;
+void main() {
+ vec2 offset = vec2(0.0, u_texel_size.y);
+ vec4 sum = vec4(0.0);
+ sum += texture(u_texture, v_uv - offset * 6.0) * 0.0152;
+ sum += texture(u_texture, v_uv - offset * 5.0) * 0.0300;
+ sum += texture(u_texture, v_uv - offset * 4.0) * 0.0525;
+ sum += texture(u_texture, v_uv - offset * 3.0) * 0.0812;
+ sum += texture(u_texture, v_uv - offset * 2.0) * 0.1110;
+ sum += texture(u_texture, v_uv - offset * 1.0) * 0.1342;
+ sum += texture(u_texture, v_uv) * 0.1432;
+ sum += texture(u_texture, v_uv + offset * 1.0) * 0.1342;
+ sum += texture(u_texture, v_uv + offset * 2.0) * 0.1110;
+ sum += texture(u_texture, v_uv + offset * 3.0) * 0.0812;
+ sum += texture(u_texture, v_uv + offset * 4.0) * 0.0525;
+ sum += texture(u_texture, v_uv + offset * 5.0) * 0.0300;
+ sum += texture(u_texture, v_uv + offset * 6.0) * 0.0152;
+ FragColor = sum;
+}
+"""
+  self.h_blur_program = self._compile_shader(vert_src, h_frag_src)
+  self.v_blur_program = self._compile_shader(vert_src, v_frag_src)
+
+ def compile_deepsea_shader(self):
+  vert_src = """
+#version 330 core
+layout(location = 0) in vec2 a_position;
+layout(location = 1) in vec2 a_texcoord;
+out vec2 v_uv;
+void main() {
+ gl_Position = vec4(a_position, 0.0, 1.0);
+ v_uv = a_texcoord;
+}
+"""
+  frag_src = """
+#version 330 core
+in vec2 v_uv;
+uniform float u_time;
+uniform vec2 u_resolution;
+out vec4 FragColor;
+
+float hash(vec2 p) {
+ return fract(sin(dot(p, vec2(127.1, 311.7))) * 43758.5453);
+}
+
+float noise(vec2 p) {
+ vec2 i = floor(p);
+ vec2 f = fract(p);
+ f = f * f * (3.0 - 2.0 * f);
+ float a = hash(i);
+ float b = hash(i + vec2(1.0, 0.0));
+ float c = hash(i + vec2(0.0, 1.0));
+ float d = hash(i + vec2(1.0, 1.0));
+ return mix(mix(a, b, f.x), mix(c, d, f.x), f.y);
+}
+
+float fbm(vec2 p) {
+ float v = 0.0;
+ float a = 0.5;
+ for (int i = 0; i < 4; i++) {
+  v += a * noise(p);
+  p *= 2.0;
+  a *= 0.5;
+ }
+ return v;
+}
+
+void main() {
+ vec2 uv = v_uv;
+ float t = u_time * 0.3;
+ vec3 col = vec3(0.01, 0.05, 0.12);
+ for (int i = 0; i < 3; i++) {
+  float phase = t * (0.1 + float(i) * 0.05);
+  vec2 blob_uv = uv + vec2(sin(phase), cos(phase * 0.8)) * 0.3;
+  float blob = fbm(blob_uv * 3.0 + t * 0.2);
+  col = mix(col, vec3(0.02, 0.20, 0.40), blob * 0.4);
+ }
+ float line_alpha = 0.0;
+ for (int i = 0; i < 12; i++) {
+  float fi = float(i);
+  float offset = mod(t * 15.0 + fi * (u_resolution.x / 12.0), u_resolution.x);
+  float line_x = offset / u_resolution.x;
+  float dist = abs(uv.x - line_x);
+  float alpha = smoothstep(0.02, 0.0, dist) * (0.1 + 0.05 * sin(t + fi));
+  line_alpha += alpha;
+ }
+ col += vec3(0.04, 0.35, 0.55) * line_alpha;
+ float vignette = 1.0 - length(uv - 0.5) * 0.8;
+ col *= vignette;
+ FragColor = vec4(col, 1.0);
+}
+"""
+  self.deepsea_program = self._compile_shader(vert_src, frag_src)
+  self._quad_vao = self._create_quad_vao()
+
+ def render_deepsea_to_fbo(self, width: int, height: int, time: float):
+  if not self.deepsea_program or not self.scene_fbo or not self._quad_vao:
+   return
+  scene_w = width * self._fb_scale
+  scene_h = height * self._fb_scale
+  gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self.scene_fbo)
+  gl.glViewport(0, 0, scene_w, scene_h)
+  gl.glClearColor(0.01, 0.05, 0.12, 1.0)
+  gl.glClear(gl.GL_COLOR_BUFFER_BIT)
+  gl.glUseProgram(self.deepsea_program)
+  u_time_loc = gl.glGetUniformLocation(self.deepsea_program, "u_time")
+  if u_time_loc != -1:
+   gl.glUniform1f(u_time_loc, time)
+  u_res_loc = gl.glGetUniformLocation(self.deepsea_program, "u_resolution")
+  if u_res_loc != -1:
+   gl.glUniform2f(u_res_loc, float(scene_w), float(scene_h))
+  gl.glBindVertexArray(self._quad_vao)
+  gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)
+  gl.glBindVertexArray(0)
   gl.glUseProgram(0)
+  gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
+
+ def _render_quad(self, program: int, src_tex: int, texel_size: tuple[float, float]):
+  gl.glUseProgram(program)
+  gl.glActiveTexture(gl.GL_TEXTURE0)
+  gl.glBindTexture(gl.GL_TEXTURE_2D, src_tex)
+  u_tex = gl.glGetUniformLocation(program, "u_texture")
+  if u_tex != -1:
+   gl.glUniform1i(u_tex, 0)
+  u_ts = gl.glGetUniformLocation(program, "u_texel_size")
+  if u_ts != -1:
+   gl.glUniform2f(u_ts, texel_size[0], texel_size[1])
+  gl.glBindVertexArray(self._quad_vao)
+  gl.glDrawArrays(gl.GL_TRIANGLE_STRIP, 0, 4)
+  gl.glBindVertexArray(0)
+  gl.glBindTexture(gl.GL_TEXTURE_2D, 0)
+  gl.glUseProgram(0)
+
+ def prepare_blur(self, width: int, height: int, time: float):
+  if not self.h_blur_program or not self.v_blur_program:
+   return
+  if not self.blur_fbo_a or not self.blur_fbo_b:
+   return
+  blur_w = max(1, self._fb_width)
+  blur_h = max(1, self._fb_height)
+  texel_x = 1.0 / float(blur_w)
+  texel_y = 1.0 / float(blur_h)
+  gl.glViewport(0, 0, blur_w, blur_h)
+  gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self.blur_fbo_a)
+  gl.glClearColor(0.0, 0.0, 0.0, 0.0)
+  gl.glClear(gl.GL_COLOR_BUFFER_BIT)
+  self._render_quad(self.h_blur_program, self.scene_tex, (texel_x, texel_y))
+  gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self.blur_fbo_b)
+  gl.glClear(gl.GL_COLOR_BUFFER_BIT)
+  self._render_quad(self.v_blur_program, self.blur_tex_a, (texel_x, texel_y))
+  gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
+  restore_w = width * self._fb_scale
+  restore_h = height * self._fb_scale
+  gl.glViewport(0, 0, restore_w, restore_h)
+
+ def prepare_global_blur(self, width: int, height: int, time: float, fb_scale: float = 1.0):
+  if not self.scene_fbo:
+   if self._fb_scale != int(fb_scale):
+    self.setup_fbos(width, height, fb_scale)
+  self.render_deepsea_to_fbo(width, height, time)
+  self.prepare_blur(width, height, time)
+
+ def get_blur_texture(self) -> int | None:
+  return self.blur_tex_b
+
+ def cleanup(self):
+  fbos = [f for f in [self.scene_fbo, self.blur_fbo_a, self.blur_fbo_b] if f is not None]
+  texs = [t for t in [self.scene_tex, self.blur_tex_a, self.blur_tex_b] if t is not None]
+  progs = [p for p in [self.h_blur_program, self.v_blur_program, self.deepsea_program] if p is not None]
+  if fbos:
+   gl.glDeleteFramebuffers(len(fbos), fbos)
+  if texs:
+   gl.glDeleteTextures(len(texs), texs)
+  if progs:
+   for p in progs:
+    gl.glDeleteProgram(p)
+  if self._quad_vao:
+   gl.glDeleteVertexArrays(1, [self._quad_vao])
+  self.scene_fbo = None
+  self.scene_tex = None
+  self.blur_fbo_a = None
+  self.blur_tex_a = None
+  self.blur_fbo_b = None
+  self.blur_tex_b = None
+  self.h_blur_program = None
+  self.v_blur_program = None
+  self.deepsea_program = None
+  self._quad_vao = None

tests/test_frosted_glass.py

@@ -0,0 +1,26 @@
+import pytest
+from unittest.mock import patch, MagicMock
+from src.gui_2 import App
+
+
+def test_frosted_glass_disabled():
+    with patch("src.gui_2.imgui") as mock_imgui:
+        with patch("src.gui_2.gl") as mock_gl:
+            app = App()
+            app.ui_frosted_glass_enabled = False
+            app._render_frosted_background((0, 0), (100, 100))
+            assert app._blur_pipeline is None
+            mock_gl.glEnable.assert_not_called()
+            mock_gl.glBlendFunc.assert_not_called()
+            mock_gl.glBindTexture.assert_not_called()
+            mock_gl.glBegin.assert_not_called()
+            mock_gl.glEnd.assert_not_called()
+            mock_gl.glDisable.assert_not_called()
+            mock_imgui.get_io().display_size.assert_not_called()
+            mock_imgui.get_io().display_framebuffer_scale.assert_not_called()
+            mock_imgui.get_window_draw_list.assert_not_called()
+            mock_imgui.get_window_pos.assert_not_called()
+            mock_imgui.get_window_size.assert_not_called()
+            mock_imgui.get_color_u32.assert_not_called()
+            mock_imgui.push_texture_id.assert_not_called()
+            mock_imgui.pop_texture_id.assert_not_called()

tests/test_gui2_layout.py

@@ -26,5 +26,84 @@ def test_gui2_old_windows_removed_from_show_windows(app_instance: App) -> None:
   "Provider", "System Prompts",
   "Comms History"
  ]
+ for old_win in old_windows:
+from src.gui_2 import App
+
+def test_gui2_hubs_exist_in_show_windows(app_instance: App) -> None:
+ expected_hubs = [
+  "Context Hub",
+  "AI Settings",
+  "Discussion Hub",
+  "Operations Hub",
+  "Files & Media",
+  "Theme",
+ ]
+ for hub in expected_hubs:
+  assert hub in app_instance.show_windows, f"Expected hub window '{hub}' not found in show_windows"
+
+def test_gui2_old_windows_removed_from_show_windows(app_instance: App) -> None:
+ old_windows = [
+  "Projects", "Files", "Screenshots",
+  "Provider", "System Prompts",
+  "Comms History"
+ ]
  for old_win in old_windows:
   assert old_win not in app_instance.show_windows, f"Old window '{old_win}' should have been removed from show_windows"
+
+def test_frosted_glass_disabled():
+ with patch("src.gui_2.imgui"):
+  app = App()
+  app.ui_frosted_glass_enabled = False
+  app._render_frosted_background((0, 0), (100, 100))
+  assert not app._blur_pipeline is None or not app._blur_pipeline.prepare_global_blur.called
+  imgui.get_io().display_size.assert_not_called()
+  imgui.get_io().display_framebuffer_scale.assert_not_called()
+  imgui.get_window_draw_list.assert_not_called()
+  imgui.get_window_pos.assert_not_called()
+  imgui.get_window_size.assert_not_called()
+  imgui.get_color_u32.assert_not_called()
+  imgui.push_texture_id.assert_not_called()
+  imgui.pop_texture_id.assert_not_called()
+  dl.add_image_quad.assert_not_called()
+  imgui.pop_texture_id.assert_not_called()
+  gl.glEnable.assert_not_called()
+  gl.glBlendFunc.assert_not_called()
+  gl.glBindTexture.assert_not_called()
+  gl.glBegin.assert_not_called()
+  gl.glEnd.assert_not_called()
+  gl.glDisable.assert_not_called()
+  gl.glUnbindTexture.assert_not_called()
+  gl.glDeleteTexture.assert_not_called()
+  gl.glDisable.assert_not_called()
+
+def test_frosted_glass_enabled():
+ with patch("src.gui_2.imgui"):
+  with patch("src.gui_2.BlurPipeline") as mock_blur:
+   app = App()
+   app.ui_frosted_glass_enabled = True
+   app._blur_pipeline = mock_blur
+   mock_blur.return_value = BlurPipeline()
+   mock_blur.prepare_global_blur.return_value = None
+   mock_blur.get_blur_texture.return_value = 123
+   imgui.get_io().display_size = MagicMock(x=800.0, y=600.0)
+   imgui.get_io().display_framebuffer_scale = MagicMock(x=1.0, y=1.0)
+   imgui.get_window_draw_list.return_value = MagicMock()
+   imgui.get_window_pos.return_value = (100, 200)
+   imgui.get_window_size.return_value = (300, 400)
+   imgui.get_color_u32.return_value = 0xFFFFFFFF
+   dl = MagicMock()
+   imgui.get_window_draw_list.return_value = dl
+   app._render_frosted_background((100, 200), (300, 400))
+   mock_blur.get_blur_texture.assert_called_once()
+   assert dl.add_callback_texture_id.called
+   assert dl.add_callback_quadsDrawElements.called
+   imgui.push_texture_id.assert_called()
+   imgui.pop_texture_id.assert_called()
+   gl.glEnable.assert_called()
+   gl.glBlendFunc.assert_called()
+   gl.glBindTexture.assert_called()
+   gl.glBegin.assert_called()
+   gl.glEnd.assert_called()
+   gl.glDisable.assert_called()
+   gl.glUnbindTexture.assert_called()
+   gl.glDeleteTexture.assert_not_called()

tests/test_shader_manager.py

@@ -1,6 +1,172 @@
 import pytest
 from unittest.mock import patch, MagicMock
 
+def test_blur_pipeline_import():
+ with patch("src.shader_manager.gl") as mock_gl:
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  assert pipeline is not None
+  assert pipeline.scene_fbo is None
+  assert pipeline.blur_fbo_a is None
+  assert pipeline.blur_fbo_b is None
+  assert pipeline.scene_tex is None
+  assert pipeline.blur_tex_a is None
+  assert pipeline.blur_tex_b is None
+  assert pipeline.h_blur_program is None
+  assert pipeline.v_blur_program is None
+
+def test_blur_pipeline_setup_fbos():
+ with patch("src.shader_manager.gl") as mock_gl:
+  tex_counter = iter([10, 20, 30])
+  fbo_counter = iter([1, 2, 3])
+  mock_gl.glGenTextures.side_effect = lambda n: next(tex_counter)
+  mock_gl.glGenFramebuffers.side_effect = lambda n: next(fbo_counter)
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.setup_fbos(800, 600)
+  assert mock_gl.glGenFramebuffers.called
+  assert mock_gl.glGenTextures.called
+  assert pipeline.scene_fbo is not None
+  assert pipeline.blur_fbo_a is not None
+  assert pipeline.blur_fbo_b is not None
+
+def test_blur_pipeline_compile_shaders():
+ with patch("src.shader_manager.gl") as mock_gl:
+  mock_gl.glCreateProgram.return_value = 100
+  mock_gl.glCreateShader.return_value = 200
+  mock_gl.glGetShaderiv.return_value = mock_gl.GL_TRUE
+  mock_gl.glGetProgramiv.return_value = mock_gl.GL_TRUE
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.compile_blur_shaders()
+  assert mock_gl.glCreateProgram.called
+  assert pipeline.h_blur_program is not None
+  assert pipeline.v_blur_program is not None
+
+def test_blur_pipeline_wide_tap_distribution():
+ with patch("src.shader_manager.gl") as mock_gl:
+  mock_gl.glCreateProgram.return_value = 100
+  mock_gl.glCreateShader.return_value = 200
+  mock_gl.glGetShaderiv.return_value = mock_gl.GL_TRUE
+  mock_gl.glGetProgramiv.return_value = mock_gl.GL_TRUE
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.compile_blur_shaders()
+  assert mock_gl.glShaderSource.called
+  shader_sources = [call.args[1] for call in mock_gl.glShaderSource.call_args_list]
+  frag_sources = [s for s in shader_sources if 'texture(' in s and 'offset' in s]
+  assert len(frag_sources) >= 2
+  for src in frag_sources:
+   texture_calls = src.count('texture(u_texture')
+   assert texture_calls >= 11, f"Expected at least 11 texture samples for wide tap distribution, got {texture_calls}"
+
+def test_blur_pipeline_render_deepsea_to_fbo():
+ with patch("src.shader_manager.gl") as mock_gl:
+  tex_counter = iter([10, 20, 30])
+  fbo_counter = iter([1, 2, 3])
+  mock_gl.glGenTextures.side_effect = lambda n: next(tex_counter)
+  mock_gl.glGenFramebuffers.side_effect = lambda n: next(fbo_counter)
+  mock_gl.glCreateProgram.return_value = 300
+  mock_gl.glCreateShader.return_value = 400
+  mock_gl.glGetShaderiv.return_value = mock_gl.GL_TRUE
+  mock_gl.glGetProgramiv.return_value = mock_gl.GL_TRUE
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.setup_fbos(800, 600)
+  pipeline.compile_deepsea_shader()
+  pipeline.render_deepsea_to_fbo(800, 600, 0.0)
+  assert mock_gl.glBindFramebuffer.called
+  assert mock_gl.glUseProgram.called
+  assert mock_gl.glDrawArrays.called
+
+def test_blur_pipeline_deepsea_shader_compilation():
+ with patch("src.shader_manager.gl") as mock_gl:
+  mock_gl.glCreateProgram.return_value = 500
+  mock_gl.glCreateShader.return_value = 600
+  mock_gl.glGetShaderiv.return_value = mock_gl.GL_TRUE
+  mock_gl.glGetProgramiv.return_value = mock_gl.GL_TRUE
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.compile_deepsea_shader()
+  assert mock_gl.glCreateProgram.called
+  assert pipeline.deepsea_program is not None
+
+def test_blur_pipeline_prepare_blur():
+ with patch("src.shader_manager.gl") as mock_gl:
+  mock_gl.glGenFramebuffers.return_value = None
+  mock_gl.glGenTextures.return_value = None
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.scene_fbo = 1
+  pipeline.scene_tex = 10
+  pipeline.blur_fbo_a = 2
+  pipeline.blur_tex_a = 20
+  pipeline.blur_fbo_b = 3
+  pipeline.blur_tex_b = 30
+  pipeline.h_blur_program = 100
+  pipeline.v_blur_program = 101
+  pipeline.prepare_blur(800, 600, 0.0)
+  assert mock_gl.glBindFramebuffer.called
+  assert mock_gl.glUseProgram.called
+
+def test_blur_pipeline_prepare_global_blur():
+ with patch("src.shader_manager.gl") as mock_gl:
+  tex_counter = iter([10, 20, 30])
+  fbo_counter = iter([1, 2, 3])
+  mock_gl.glGenTextures.side_effect = lambda n: next(tex_counter)
+  mock_gl.glGenFramebuffers.side_effect = lambda n: next(fbo_counter)
+  mock_gl.glCreateProgram.return_value = 100
+  mock_gl.glCreateShader.return_value = 200
+  mock_gl.glGetShaderiv.return_value = mock_gl.GL_TRUE
+  mock_gl.glGetProgramiv.return_value = mock_gl.GL_TRUE
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.setup_fbos(800, 600)
+  pipeline.compile_deepsea_shader()
+  pipeline.compile_blur_shaders()
+  pipeline.prepare_global_blur(800, 600, 0.0)
+  assert mock_gl.glBindFramebuffer.called
+  assert mock_gl.glUseProgram.called
+  assert mock_gl.glViewport.called
+  blur_tex = pipeline.get_blur_texture()
+  assert blur_tex is not None
+  assert blur_tex == 30
+
+def test_blur_pipeline_high_dpi_scaling():
+ with patch("src.shader_manager.gl") as mock_gl:
+  tex_counter = iter([10, 20, 30])
+  fbo_counter = iter([1, 2, 3])
+  mock_gl.glGenTextures.side_effect = lambda n: next(tex_counter)
+  mock_gl.glGenFramebuffers.side_effect = lambda n: next(fbo_counter)
+  mock_gl.glCreateProgram.return_value = 100
+  mock_gl.glCreateShader.return_value = 200
+  mock_gl.glGetShaderiv.return_value = mock_gl.GL_TRUE
+  mock_gl.glGetProgramiv.return_value = mock_gl.GL_TRUE
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  fb_scale = 2.0
+  pipeline.setup_fbos(800, 600, fb_scale)
+  assert pipeline._fb_width == (800 * int(fb_scale)) // 4
+  assert pipeline._fb_height == (600 * int(fb_scale)) // 4
+  assert pipeline._fb_scale == int(fb_scale)
+
+def test_blur_pipeline_cleanup():
+ with patch("src.shader_manager.gl") as mock_gl:
+  from src.shader_manager import BlurPipeline
+  pipeline = BlurPipeline()
+  pipeline.scene_fbo = 1
+  pipeline.blur_fbo_a = 2
+  pipeline.blur_fbo_b = 3
+  pipeline.scene_tex = 10
+  pipeline.blur_tex_a = 20
+  pipeline.blur_tex_b = 30
+  pipeline.h_blur_program = 100
+  pipeline.v_blur_program = 101
+  pipeline.cleanup()
+  assert mock_gl.glDeleteFramebuffers.called
+  assert mock_gl.glDeleteTextures.called
+  assert mock_gl.glDeleteProgram.called
+
 def test_shader_manager_initialization_and_compilation():
  # Import inside test to allow patching OpenGL before import if needed
  # In this case, we patch the OpenGL.GL functions used by ShaderManager