1 files changed, 53 insertions, 5 deletions

diff --git a/src/opengl.c b/src/opengl.c
index ea3855d..f670027 100644
--- a/src/opengl.c
+++ b/src/opengl.c
@@ -21,6 +21,8 @@
 
 extern IMAGEHEADER ImageHeaderArray[];
 extern VIEWDESCRIPTORBLOCK *Global_VDB_Ptr;
+extern unsigned char GammaValues[256];
+extern SCREENDESCRIPTORBLOCK ScreenDescriptorBlock;
 
 static void *CurrTextureHandle;
 
@@ -72,32 +74,78 @@ switch(RenderPolygon.TranslucencyMode)
 		fprintf(stderr, "RenderPolygon.TranslucencyMode: invalid %d\n", RenderPolygon.TranslucencyMode);
 }
 
+/*
+	if (SecondaryColorExt)
+		glEnable(GL_COLOR_SUM_EXT);
+*/
+
 	glBegin(GL_POLYGON);
 	for (i = 0; i < RenderPolygon.NumberOfVertices; i++) {
+		RENDERVERTEX *vertices = &renderVerticesPtr[i];
 		GLfloat x, y, z;
 		int x1, y1;
-		RENDERVERTEX *vertices = &renderVerticesPtr[i];
 		
 		x1 = (vertices->X*(Global_VDB_Ptr->VDB_ProjX+1))/vertices->Z+Global_VDB_Ptr->VDB_CentreX;
 		y1 = (vertices->Y*(Global_VDB_Ptr->VDB_ProjY+1))/vertices->Z+Global_VDB_Ptr->VDB_CentreY;
 		x = x1;
 		y = y1;
 						
-		x =  (x - 320.0)/320.0;
-		y = -(y - 240.0)/240.0;
+//		x =  (x - 319.0)/319.0;
+//		y = -(y - 239.0)/239.0;
+		x =  (x - ScreenDescriptorBlock.SDB_CentreX)/ScreenDescriptorBlock.SDB_CentreX;
+		y = -(y - ScreenDescriptorBlock.SDB_CentreY)/ScreenDescriptorBlock.SDB_CentreY;
 		
 		zvalue = vertices->Z+HeadUpDisplayZOffset;
-		zvalue = 1.0 - ZNear/zvalue*2;
+		zvalue = 1.0 - 2*ZNear/zvalue; /* currently maps [ZNear, inf) to [-1, 1], probably could be more precise with a ZFar */
 		z = zvalue;
 		
-		glColor4ub(vertices->R, vertices->G, vertices->B, vertices->A);
+		glColor4ub(GammaValues[vertices->R], GammaValues[vertices->G], GammaValues[vertices->B], vertices->A);
+/*
+		if (SecondaryColorExt)
+			glSecondaryColor3ub(GammaValues[vertices->SpecularR], GammaValues[vertices->SpecularG], GammaValues[vertices->SpecularB]);
+*/	
 		glVertex3f(x, y, z);
+
 //		fprintf(stderr, "Vertex %d: (%f, %f, %f)\n\t[%d, %d, %d]->[%d, %d] (%d, %d, %d, %d)\n", i, x, y, z, vertices->X, vertices->Y, vertices->Z, x1, y1, vertices->R, vertices->G, vertices->B, vertices->A);
 //		fprintf(stderr, "GREP: z = %d, znear = %f, zvalue = %f, z = %f\n", vertices->Z, ZNear, zvalue, z);
 	}
 	glEnd();
 	
 	CurrTextureHandle = TextureHandle;
+
+return;
+/* This *tries* to emulate SecondaryColorExt */
+/*	if (!SecondaryColorExt || WantSecondaryColorHack) */ {
+		glBlendFunc(GL_ONE, GL_ONE);
+		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_FALSE);
+		glDepthMask(GL_FALSE);
+		
+		glBegin(GL_POLYGON);
+		for (i = 0; i < RenderPolygon.NumberOfVertices; i++) {
+			RENDERVERTEX *vertices = &renderVerticesPtr[i];
+			GLfloat x, y, z;
+			int x1, y1;
+		
+			x1 = (vertices->X*(Global_VDB_Ptr->VDB_ProjX+1))/vertices->Z+Global_VDB_Ptr->VDB_CentreX;
+			y1 = (vertices->Y*(Global_VDB_Ptr->VDB_ProjY+1))/vertices->Z+Global_VDB_Ptr->VDB_CentreY;
+			x = x1;
+			y = y1;
+						
+			x =  (x - 320.0)/320.0;
+			y = -(y - 240.0)/240.0;
+		
+			zvalue = vertices->Z+HeadUpDisplayZOffset;
+			zvalue = 1.0 - 2*ZNear/zvalue; /* currently maps [ZNear, inf) to [-1, 1], probably could be more precise with a ZFar */
+			z = zvalue;
+		
+			glColor4ub(GammaValues[vertices->SpecularR], GammaValues[vertices->SpecularG], GammaValues[vertices->SpecularB], 255);
+			glVertex3f(x, y, z);
+		}
+		glEnd();
+		
+		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+		glDepthMask(GL_TRUE);	
+	}
 #endif	
 }