From 2f0e67433c624cd3e006ca3f789e36edc64a894f Mon Sep 17 00:00:00 2001
From: Simon Robertshaw <simon@hardwired.org.uk>
Date: Wed, 15 Aug 2012 15:02:48 +0100
Subject: [PATCH] Ensure zoom is drawn after particles for OpenGL Rendering,
 draw walls onto the correct framebuffer

---
 src/graphics/OpenGLDrawMethods.inl |  8 ++--
 src/graphics/Renderer.cpp          | 65 ++++++++++++++++++++++--------
 2 files changed, 52 insertions(+), 21 deletions(-)

diff --git a/src/graphics/OpenGLDrawMethods.inl b/src/graphics/OpenGLDrawMethods.inl
index 173cb4bd9..02e03785b 100644
--- a/src/graphics/OpenGLDrawMethods.inl
+++ b/src/graphics/OpenGLDrawMethods.inl
@@ -228,7 +228,7 @@ void PIXELMETHODS_CLASS::xor_rect(int x, int y, int width, int height)
 
 void PIXELMETHODS_CLASS::xor_bitmap(unsigned char * bitmap, int x, int y, int w, int h)
 {
-	/* Rewriting until better method can be found
+	/* Rewriting until better method can be found */
 	//glEnable(GL_COLOR_LOGIC_OP);
 	//glLogicOp(GL_XOR);
 	glEnable(GL_TEXTURE_2D);
@@ -254,8 +254,8 @@ void PIXELMETHODS_CLASS::xor_bitmap(unsigned char * bitmap, int x, int y, int w,
 	glDisable(GL_TEXTURE_2D);
 	//glDisable(GL_COLOR_LOGIC_OP);
 	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
-	*/
-	float old_size;
+	
+	/*float old_size;
 	glGetFloatv(GL_POINT_SIZE,&old_size);	
 
 	glPointSize(1.0);
@@ -269,7 +269,7 @@ void PIXELMETHODS_CLASS::xor_bitmap(unsigned char * bitmap, int x, int y, int w,
 		}
 	}
 	glEnd();
-	glPointSize(old_size);
+	glPointSize(old_size);*/
 }
 
 void PIXELMETHODS_CLASS::draw_line(int x, int y, int x2, int y2, int r, int g, int b, int a)
diff --git a/src/graphics/Renderer.cpp b/src/graphics/Renderer.cpp
index 399661d73..a2261f80b 100644
--- a/src/graphics/Renderer.cpp
+++ b/src/graphics/Renderer.cpp
@@ -47,10 +47,10 @@ void Renderer::RenderBegin()
 		std::fill(warpVid, warpVid+(VIDXRES*VIDYRES), 0);
 	}
 #endif
-	draw_air();
-	draw_grav();
+	//draw_air();
+	//draw_grav();
 	render_parts();
-	render_fire();
+	//render_fire();
 #ifndef OGLR
 	if(display_mode & DISPLAY_PERS)
 	{
@@ -71,8 +71,8 @@ void Renderer::RenderBegin()
 	}
 #endif
 	DrawWalls();
-	draw_grav_zones();
-	DrawSigns();
+	//draw_grav_zones();
+	//DrawSigns();
 #ifndef OGLR
 	if(display_mode & DISPLAY_WARP)
 	{
@@ -86,9 +86,16 @@ void Renderer::RenderBegin()
 
 void Renderer::RenderEnd()
 {
-	RenderZoom();
 #ifdef OGLI
+#ifdef OGLR
 	FinaliseParts();
+	RenderZoom();
+#else
+	RenderZoom();
+	FinaliseParts();
+#endif
+#else
+	RenderZoom();
 #endif
 }
 
@@ -341,7 +348,7 @@ void Renderer::RenderZoom()
 
 		glGetIntegerv(GL_BLEND_SRC, &origBlendSrc);
 		glGetIntegerv(GL_BLEND_DST, &origBlendDst);
-		glBlendFunc(GL_ONE, GL_ZERO);
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);//glBlendFunc(GL_ONE, GL_ZERO);
 
 		glEnable( GL_TEXTURE_2D );
 		//glReadBuffer(GL_AUX0);
@@ -576,6 +583,39 @@ VideoBuffer * Renderer::WallIcon(int wallID, int width, int height)
 
 void Renderer::DrawWalls()
 {
+#ifdef OGLR
+	GLint prevFbo;
+	glGetIntegerv(GL_FRAMEBUFFER_BINDING, &prevFbo);
+	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, partsFbo);
+	glTranslated(0, MENUSIZE, 0);
+
+	int x, y, i, j, cr, cg, cb;
+	unsigned char wt;
+	pixel pc;
+	pixel gc;
+	unsigned char (*bmap)[XRES/CELL] = sim->bmap;
+	unsigned char (*emap)[XRES/CELL] = sim->emap;
+	wall_type *wtypes = sim->wtypes;
+	for (y=0; y<YRES/CELL; y++)
+		for (x=0; x<XRES/CELL; x++)
+			if (bmap[y][x])
+			{
+				wt = bmap[y][x];
+				if (wt<0 || wt>=UI_WALLCOUNT)
+					continue;
+				pc = wtypes[wt].colour;
+				gc = wtypes[wt].eglow;
+
+				cr = PIXR(pc);
+				cg = PIXG(pc);
+				cb = PIXB(pc);
+
+				fillrect(x*CELL, y*CELL, CELL, CELL, cr, cg, cb, 255);
+			}
+
+	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, prevFbo);
+	glTranslated(0, -MENUSIZE, 0);
+#else
 	int x, y, i, j, cr, cg, cb;
 	unsigned char wt;
 	pixel pc;
@@ -592,13 +632,6 @@ void Renderer::DrawWalls()
 					continue;
 				pc = wtypes[wt].colour;
 				gc = wtypes[wt].eglow;
-#ifdef OGLR
-				int r = PIXR(pc);
-				int g = PIXG(pc);
-				int b = PIXB(pc);
-				int a = 255;
-#endif
-#ifndef OGLR
 
 				// standard wall patterns
 				if (wtypes[wt].drawstyle==1)
@@ -714,10 +747,8 @@ void Renderer::DrawWalls()
 					fire_b[y][x] = cb;
 
 				}
-#else
-				this->fillrect(x*CELL, y*CELL, CELL, CELL, r, g, b, a);
-#endif
 			}
+#endif
 }
 
 void Renderer::DrawSigns()