From f6814e02c02a0ad68af107e7605c08ee47de79f4 Mon Sep 17 00:00:00 2001
From: Arisotura <thetotalworm@gmail.com>
Date: Fri, 31 May 2019 21:37:30 +0200
Subject: [PATCH] * add needed libui functions under Windows, even if they
 don't do a whole lot * fix ass-stupid fog bug

---
 src/GPU3D_OpenGL.cpp               |  5 +----
 src/GPU3D_OpenGL_shaders.h         |  9 +++++++--
 src/libui_sdl/libui/windows/gl.cpp | 19 +++++++++++++++++++
 3 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/src/GPU3D_OpenGL.cpp b/src/GPU3D_OpenGL.cpp
index db2617c2..95243d1c 100644
--- a/src/GPU3D_OpenGL.cpp
+++ b/src/GPU3D_OpenGL.cpp
@@ -187,7 +187,7 @@ void SetupDefaultTexParams(GLuint tex)
 bool Init()
 {
     GLint uni_id;
-    
+
     glEnable(GL_DEPTH_TEST);
     glEnable(GL_STENCIL_TEST);
 
@@ -1043,9 +1043,6 @@ void RenderFrame()
         {
             if (RenderPolygonRAM[i]->Degenerate) continue;
 
-            // zog.
-            //if (RenderPolygonRAM[i]->YBottom <= 96 || RenderPolygonRAM[i]->YTop >= 144) continue;
-
             SetupPolygon(&PolygonList[npolys], RenderPolygonRAM[i]);
             if (firsttrans < 0 && RenderPolygonRAM[i]->Translucent)
                 firsttrans = npolys;
diff --git a/src/GPU3D_OpenGL_shaders.h b/src/GPU3D_OpenGL_shaders.h
index b12dc612..4c5b82e3 100644
--- a/src/GPU3D_OpenGL_shaders.h
+++ b/src/GPU3D_OpenGL_shaders.h
@@ -42,7 +42,7 @@ uniform uint uOpaquePolyID;
 uniform uint uFogFlag;
 
 out vec4 oColor;
-out vec3 oAttr;
+out vec4 oAttr;
 
 void main()
 {
@@ -50,6 +50,7 @@ void main()
     oAttr.r = float(uOpaquePolyID) / 63.0;
     oAttr.g = 0;
     oAttr.b = float(uFogFlag);
+    oAttr.a = 1;
 }
 )";
 
@@ -178,7 +179,7 @@ smooth in vec2 fTexcoord;
 flat in ivec3 fPolygonAttr;
 
 out vec4 oColor;
-out vec3 oAttr;
+out vec4 oAttr;
 
 int TexcoordWrap(int c, int maxc, int mode)
 {
@@ -620,6 +621,7 @@ void main()
     oColor = col;
     oAttr.r = float((fPolygonAttr.x >> 24) & 0x3F) / 63.0;
     oAttr.b = float((fPolygonAttr.x >> 15) & 0x1);
+    oAttr.a = 1;
 }
 )";
 
@@ -635,6 +637,7 @@ void main()
     oColor = col;
     oAttr.r = float((fPolygonAttr.x >> 24) & 0x3F) / 63.0;
     oAttr.b = float((fPolygonAttr.x >> 15) & 0x1);
+    oAttr.a = 1;
     gl_FragDepth = fZ;
 }
 )";
@@ -649,6 +652,7 @@ void main()
 
     oColor = col;
     oAttr.b = 0;
+    oAttr.a = 1;
 }
 )";
 
@@ -664,6 +668,7 @@ void main()
 
     oColor = col;
     oAttr.b = 0;
+    oAttr.a = 1;
     gl_FragDepth = fZ;
 }
 )";
diff --git a/src/libui_sdl/libui/windows/gl.cpp b/src/libui_sdl/libui/windows/gl.cpp
index 1e3732c2..c6217217 100644
--- a/src/libui_sdl/libui/windows/gl.cpp
+++ b/src/libui_sdl/libui/windows/gl.cpp
@@ -135,8 +135,27 @@ void *uiGLGetProcAddress(const char* proc)
     return (void*)wglGetProcAddress(proc);
 }
 
+void uiGLBegin(uiGLContext* ctx)
+{
+}
+
+void uiGLEnd(uiGLContext* ctx)
+{
+}
+
 void uiGLSwapBuffers(uiGLContext* ctx)
 {
     if (ctx == NULL) return;
     SwapBuffers(ctx->dc);
 }
+
+int uiGLGetFramebuffer(uiGLContext* ctx)
+{
+    return 0;
+}
+
+float uiGLGetFramebufferScale(uiGLContext* ctx)
+{
+    // TODO
+    return 1;
+}