fix C++ compile errors

[xonotic/darkplaces.git] / gl_backend.c

diff --git a/gl_backend.c b/gl_backend.c
index 0a08f1616722cd37d38f9ce2c8f42cf316984d22..0c3e73915e2192045b8645231d7ff6746680b274 100644 (file)
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -4396,3 +4396,61 @@ void R_Mesh_PrepareVertices_Mesh(int numvertices, const r_vertexmesh_t *vertex,
                break;
        }
 }
+
+void GL_BlendEquationSubtract(qboolean negated)
+{
+       if(negated)
+       {
+               switch(vid.renderpath)
+               {
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_GLES1:
+               case RENDERPATH_GLES2:
+                       qglBlendEquationEXT(GL_FUNC_REVERSE_SUBTRACT_EXT);
+                       break;
+               case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+                       IDirect3DDevice9_SetRenderState(vid_d3d9dev, D3DRS_BLENDOP, D3DBLENDOP_SUBTRACT);
+#endif
+                       break;
+               case RENDERPATH_D3D10:
+                       Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_D3D11:
+                       Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_SOFT:
+                       DPSOFTRAST_BlendSubtract(true);
+                       break;
+               }
+       }
+       else
+       {
+               switch(vid.renderpath)
+               {
+               case RENDERPATH_GL11:
+               case RENDERPATH_GL13:
+               case RENDERPATH_GL20:
+               case RENDERPATH_GLES1:
+               case RENDERPATH_GLES2:
+                       qglBlendEquationEXT(GL_FUNC_ADD_EXT);
+                       break;
+               case RENDERPATH_D3D9:
+#ifdef SUPPORTD3D
+                       IDirect3DDevice9_SetRenderState(vid_d3d9dev, D3DRS_BLENDOP, D3DBLENDOP_ADD);
+#endif
+                       break;
+               case RENDERPATH_D3D10:
+                       Con_DPrintf("FIXME D3D10 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_D3D11:
+                       Con_DPrintf("FIXME D3D11 %s:%i %s\n", __FILE__, __LINE__, __FUNCTION__);
+                       break;
+               case RENDERPATH_SOFT:
+                       DPSOFTRAST_BlendSubtract(false);
+                       break;
+               }
+       }
+}