From 0fbb841c2dd5c76de867f47a9cf6d1d0fc83d9ee Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Tue, 22 Aug 2023 07:38:46 +0200
Subject: wip

---
 editor/imgui.cpp     | 2 ++
 main/draw.cpp        | 2 ++
 main/main-impl.hpp   | 4 ++--
 shaders/lightmap.cpp | 2 +-
 shaders/lightmap.hpp | 3 ++-
 shaders/shader.frag  | 2 ++
 6 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/editor/imgui.cpp b/editor/imgui.cpp
index 399a2e69..b4b17c88 100644
--- a/editor/imgui.cpp
+++ b/editor/imgui.cpp
@@ -204,6 +204,7 @@ void app::draw_light_info()
 
 void app::draw_lightmap_test()
 {
+#if 0
     fm_debug_assert(_tested_light != 0);
 
     constexpr auto preview_size = ImVec2{512, 512};
@@ -242,6 +243,7 @@ void app::draw_lightmap_test()
     ImGui::End();
     if (!is_open)
         _tested_light = 0;
+#endif
 }
 
 static constexpr auto SCENERY_POPUP_NAME = "##scenery-popup"_s;
diff --git a/main/draw.cpp b/main/draw.cpp
index 78cd1906..b21bbc8a 100644
--- a/main/draw.cpp
+++ b/main/draw.cpp
@@ -123,6 +123,7 @@ auto main_impl::get_draw_bounds() const noexcept -> draw_bounds
     return {x0, x1, y0, y1};
 }
 
+#if 0
 bool main_impl::draw_lights_for_chunk(chunk& c, Vector2b neighbor_offset) noexcept
 {
     bool ret = false;
@@ -166,6 +167,7 @@ bool main_impl::draw_lights(chunk& c, const std::array<chunk*, 8>& ns) noexcept
     _lightmap_shader.end_accum();
     return ret;
 }
+#endif
 
 void main_impl::draw_world() noexcept
 {
diff --git a/main/main-impl.hpp b/main/main-impl.hpp
index a6457524..2afac162 100644
--- a/main/main-impl.hpp
+++ b/main/main-impl.hpp
@@ -121,8 +121,8 @@ private:
 
     void recalc_viewport(Vector2i fb_size, Vector2i win_size) noexcept;
     void draw_world() noexcept;
-    bool draw_lights(chunk& c, const std::array<chunk*, 8>& neighbors) noexcept;
-    bool draw_lights_for_chunk(chunk& c, Vector2b neighbor_offset) noexcept;
+    //bool draw_lights(chunk& c, const std::array<chunk*, 8>& neighbors) noexcept;
+    //bool draw_lights_for_chunk(chunk& c, Vector2b neighbor_offset) noexcept;
 
     draw_bounds get_draw_bounds() const noexcept override;
 
diff --git a/shaders/lightmap.cpp b/shaders/lightmap.cpp
index d857f3ba..ddfa2f46 100644
--- a/shaders/lightmap.cpp
+++ b/shaders/lightmap.cpp
@@ -204,7 +204,7 @@ lightmap_shader::lightmap_shader()
     setUniform(LightColorUniform, Color3{1, 1, 1});
     setUniform(SizeUniform, Vector2(1 / (chunk_size * max_neighbors)));
     setUniform(CenterFragcoordUniform, Vector2(0, 0));
-    setUniform(CenterClipUniform, Vector2(-1, 1));
+    setUniform(CenterClipUniform, Vector2(-1, -1));
     setUniform(IntensityUniform, 1.f);
     setUniform(ModeUniform, DrawLightmapMode);
     setUniform(FalloffUniform, (uint32_t)light_falloff::constant);
diff --git a/shaders/lightmap.hpp b/shaders/lightmap.hpp
index e48d4b5d..a5564a9b 100644
--- a/shaders/lightmap.hpp
+++ b/shaders/lightmap.hpp
@@ -134,7 +134,8 @@ private:
     //void clear_accum();
     static std::array<UnsignedShort, 6> quad_indexes(size_t N);
 
-    GL::Buffer vertex_buf{NoCreate}, index_buf{NoCreate}; // set to {NoCreate} on capacity change
+    // todo use setData() and a boolean flag on capacity change
+    GL::Buffer vertex_buf{NoCreate}, index_buf{NoCreate};
     Array<std::array<Vector3, 4>> vertexes; // todo make a contiguous allocation
     Array<std::array<UnsignedShort, 6>> indexes;
     size_t count = 0, capacity = 0;
diff --git a/shaders/shader.frag b/shaders/shader.frag
index faea53fb..98c18e10 100644
--- a/shaders/shader.frag
+++ b/shaders/shader.frag
@@ -12,6 +12,8 @@ layout (location = 1) noperspective in vec2 frag_light_coord;
 out vec4 color;
 //layout (depth_greater) out float gl_FragDepth;
 
+layout(pixel_center_integer) in vec4 gl_FragCoord;
+
 void main() {
     vec4 light = tint;
     if (enable_lightmap)
-- 
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