From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Wed, 5 Nov 2003 03:34:24 +0000 (+0000)
Subject: added R_Mesh_Draw_ShowTris function which draws a triangle mesh as lines
X-Git-Tag: xonotic-v0.1.0preview~6286
X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=commitdiff_plain;h=569035fb5d987a2ebcac65c5c2657d86556c24b3

added R_Mesh_Draw_ShowTris function which draws a triangle mesh as lines


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@3622 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/gl_backend.c b/gl_backend.c
index 7769bbc4..7cc799a9 100644
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -617,7 +617,7 @@ void GL_ScissorTest(int state)
 {
 	if(gl_state.scissortest == state)
 		return;
-	
+
 	CHECKGLERROR
 	if((gl_state.scissortest = state))
 		qglEnable(GL_SCISSOR_TEST);
@@ -1003,6 +1003,19 @@ void R_Mesh_State_Texture(const rmeshstate_t *m)
 	}
 }
 
+void R_Mesh_Draw_ShowTris(int numverts, int numtriangles, int *elements)
+{
+	qglBegin(GL_LINES);
+	for (;numtriangles;numtriangles--, elements += 3)
+	{
+		qglArrayElement(elements[0]);qglArrayElement(elements[1]);
+		qglArrayElement(elements[1]);qglArrayElement(elements[2]);
+		qglArrayElement(elements[2]);qglArrayElement(elements[0]);
+	}
+	qglEnd();
+	CHECKGLERROR
+}
+
 /*
 ==============================================================================
 
diff --git a/gl_backend.h b/gl_backend.h
index 72ce4322..59cb3e04 100644
--- a/gl_backend.h
+++ b/gl_backend.h
@@ -25,7 +25,6 @@ void GL_ActiveTexture(int num);
 void GL_ClientActiveTexture(int num);
 void GL_Scissor(int x, int y, int width, int height); // AK for DRAWQUEUE_SETCLIP
 void GL_ScissorTest(int state);	// AK for DRAWQUEUE_(RE)SETCLIP
- 
 
 extern cvar_t gl_lockarrays;
 extern cvar_t gl_mesh_copyarrays;
@@ -76,6 +75,8 @@ void R_Mesh_State_Texture(const rmeshstate_t *m);
 
 // renders a mesh
 void R_Mesh_Draw(int numverts, int numtriangles, const int *elements);
+// renders a mesh as lines
+void R_Mesh_Draw_ShowTris(int numverts, int numtriangles, int *elements);
 
 // saves a section of the rendered frame to a .tga or .jpg file
 qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height, qboolean jpeg);
diff --git a/glquake.h b/glquake.h
index 11ccd319..d871480c 100644
--- a/glquake.h
+++ b/glquake.h
@@ -130,7 +130,16 @@ extern int gl_support_anisotropy;
 #define GL_REPEAT				0x2901
 #define GL_CLAMP				0x2900
 
-#define GL_TRIANGLES				0x0004
+#define GL_POINTS				0x0000
+#define GL_LINES				0x0001
+#define GL_LINE_LOOP			0x0002
+#define GL_LINE_STRIP			0x0003
+#define GL_TRIANGLES			0x0004
+#define GL_TRIANGLE_STRIP		0x0005
+#define GL_TRIANGLE_FAN			0x0006
+#define GL_QUADS				0x0007
+#define GL_QUAD_STRIP			0x0008
+#define GL_POLYGON				0x0009
 
 #define GL_FALSE				0x0
 #define GL_TRUE					0x1