1 files changed, 33 insertions, 10 deletions

diff --git a/src/render.c b/src/render.c
index d64f2cf..1ef1880 100644
--- a/src/render.c
+++ b/src/render.c
@@ -133,7 +133,7 @@ static void render_delete_shaders(RenderContext *r) {
 	i++;
 
 /* OpenGL initial setup */
-RenderContext *render_setup(int width, int height) {
+RenderContext *render_setup(int width, int height, int disable_vbos, int disable_fbos, int disable_shaders) {
 	
 	RenderContext *r;
 	
@@ -142,27 +142,50 @@ RenderContext *render_setup(int width, int height) {
 	
 	glewInit();
 	
-	if ( GLEW_VERSION_1_5 || GLEW_ARB_vertex_buffer_object ) {
-		r->vbos = 1;
+	if ( disable_vbos == 0 ) {
+		if ( GLEW_VERSION_1_5 || GLEW_ARB_vertex_buffer_object ) {
+			r->vbos = 1;
+		} else {
+			r->vbos = 0;
+			fprintf(stderr, "Vertex buffer objects are not supported by your graphics card (or maybe just by its driver).\n");
+			fprintf(stderr, " -> Geometry performance may be less than optimal.\n");
+		}
 	} else {
+		printf("The use of vertex buffer objects has been disabled at your request.\n");
 		r->vbos = 0;
-		fprintf(stderr, "Vertex buffer objects are not supported by your graphics card (or maybe just by its driver).\n");
+	}
+	if ( r->vbos == 0 ) {
 		fprintf(stderr, " -> Geometry performance may be less than optimal.\n");
 	}
 	
-	if ( GLEW_EXT_framebuffer_object ) {
-		r->fbos = 1;
+	if ( disable_fbos == 0 ) {
+		if ( GLEW_EXT_framebuffer_object ) {
+			r->fbos = 1;
+		} else {
+			r->fbos = 0;
+			fprintf(stderr, "Framebuffer objects are not supported by your graphics card (or maybe just by its driver).\n");
+		}
 	} else {
+		printf("The use of framebuffer objects has been disabled at your request.\n");
 		r->fbos = 0;
-		fprintf(stderr, "Framebuffer objects are not supported by your graphics card (or maybe just by its driver).\n");
+	}
+	if ( r->fbos == 0 ) {
 		fprintf(stderr, " -> Reflections and GPU dynamic textures disabled.\n");
 	}
 	
-	if ( ( GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader && GLEW_ARB_shader_objects && GLEW_ARB_shading_language_100 ) || GLEW_VERSION_2_0 ) {
-		r->shaders = 1;
+	if ( disable_shaders == 0 ) {
+		if ( ( GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader && GLEW_ARB_shader_objects && GLEW_ARB_shading_language_100 )
+			|| GLEW_VERSION_2_0 ) {
+			r->shaders = 1;
+		} else {
+			r->shaders = 0;
+			fprintf(stderr, "Shaders are not supported by your graphics card (or maybe just by its driver).\n");
+		}
 	} else {
+		printf("The use of shaders has been disabled at your request.\n");
 		r->shaders = 0;
-		fprintf(stderr, "Shaders are not supported by your graphics card (or maybe just by its driver).\n");
+	}
+	if ( r->shaders == 0 ) {
 		fprintf(stderr, " -> Per-fragment lighting and GPU dynamic textures disabled.\n");
 	}