Don't load external GLSL files by default

External GLSL should probably only be used for development testing,
not released products. The GLSL files are tied to the code, and the
code changes some what often.

Fixes using OpenArena 0.8.8 which has incompatible GLSL files in a pk3.

3 files changed, 16 insertions, 4 deletions

diff --git a/src/renderergl2/tr_glsl.c b/src/renderergl2/tr_glsl.c
index 58a00e6e..ed078ddf 100644
--- a/src/renderergl2/tr_glsl.c
+++ b/src/renderergl2/tr_glsl.c
@@ -400,24 +400,30 @@ static int GLSL_LoadGPUShaderText(const char *name, const char *fallback,
 		Com_sprintf(filename, sizeof(filename), "glsl/%s_fp.glsl", name);
 	}
 
-	ri.Printf(PRINT_DEVELOPER, "...loading '%s'\n", filename);
-	size = ri.FS_ReadFile(filename, (void **)&buffer);
+	if ( r_externalGLSL->integer ) {
+		size = ri.FS_ReadFile(filename, (void **)&buffer);
+	} else {
+		size = 0;
+		buffer = NULL;
+	}
+
 	if(!buffer)
 	{
 		if (fallback)
 		{
-			ri.Printf(PRINT_DEVELOPER, "couldn't load, using fallback\n");
+			ri.Printf(PRINT_DEVELOPER, "...loading built-in '%s'\n", filename);
 			shaderText = fallback;
 			size = strlen(shaderText);
 		}
 		else
 		{
-			ri.Printf(PRINT_DEVELOPER, "couldn't load!\n");
+			ri.Printf(PRINT_DEVELOPER, "couldn't load '%s'\n", filename);
 			return 0;
 		}
 	}
 	else
 	{
+		ri.Printf(PRINT_DEVELOPER, "...loading '%s'\n", filename);
 		shaderText = buffer;
 	}
 
diff --git a/src/renderergl2/tr_init.c b/src/renderergl2/tr_init.c
index f0f56616..51cd3b47 100644
--- a/src/renderergl2/tr_init.c
+++ b/src/renderergl2/tr_init.c
@@ -109,6 +109,8 @@ cvar_t  *r_mergeLeafSurfaces;
 
 cvar_t  *r_cameraExposure;
 
+cvar_t  *r_externalGLSL;
+
 cvar_t  *r_hdr;
 cvar_t  *r_floatLightmap;
 cvar_t  *r_postProcess;
@@ -1094,6 +1096,8 @@ void R_Register( void )
 	r_greyscale = ri.Cvar_Get("r_greyscale", "0", CVAR_ARCHIVE | CVAR_LATCH);
 	ri.Cvar_CheckRange(r_greyscale, 0, 1, qfalse);
 
+	r_externalGLSL = ri.Cvar_Get( "r_externalGLSL", "0", CVAR_LATCH );
+
 	r_hdr = ri.Cvar_Get( "r_hdr", "1", CVAR_ARCHIVE | CVAR_LATCH );
 	r_floatLightmap = ri.Cvar_Get( "r_floatLightmap", "0", CVAR_ARCHIVE | CVAR_LATCH );
 	r_postProcess = ri.Cvar_Get( "r_postProcess", "1", CVAR_ARCHIVE );
diff --git a/src/renderergl2/tr_local.h b/src/renderergl2/tr_local.h
index bc3a28ed..6ade112d 100644
--- a/src/renderergl2/tr_local.h
+++ b/src/renderergl2/tr_local.h
@@ -1768,6 +1768,8 @@ extern	cvar_t	*r_anaglyphMode;
 extern  cvar_t  *r_mergeMultidraws;
 extern  cvar_t  *r_mergeLeafSurfaces;
 
+extern  cvar_t  *r_externalGLSL;
+
 extern  cvar_t  *r_hdr;
 extern  cvar_t  *r_floatLightmap;
 extern  cvar_t  *r_postProcess;