add a new vec2 LowerRightCorner to the glsl shader. The screen texture is in 0..Lower...

[xonotic/darkplaces.git] / r_textures.h

diff --git a/r_textures.h b/r_textures.h
index f83aba32122f066cf5f1df754274ff2cf5f887f5..3af696e46d3f04d5b753b07e46dbe9d73af7fab3 100644 (file)
--- a/r_textures.h
+++ b/r_textures.h
@@ -20,6 +20,8 @@
 #define TEXF_PICMIP 0x00000100
 // indicates texture should be compressed if possible
 #define TEXF_COMPRESS 0x00000200
+// use this flag to block R_PurgeTexture from freeing a texture
+#define TEXF_PERSISTENT 0x00000400
 // used for checking if textures mismatch
 #define TEXF_IMPORTANTBITS (TEXF_ALPHA | TEXF_MIPMAP | TEXF_CLAMP | TEXF_FORCENEAREST | TEXF_FORCELINEAR | TEXF_PICMIP | TEXF_COMPRESS)
 
@@ -85,7 +87,7 @@ void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, in
 
 // returns the renderer dependent texture slot number (call this before each
 // use, as a texture might not have been precached)
-#define R_GetTexture(rt) ((rt) ? ((rt)->texnum >= 0 ? (rt)->texnum : R_RealGetTexture(rt)) : r_texture_white->texnum)
+#define R_GetTexture(rt) ((rt) ? ((rt)->texnum > 0 ? (rt)->texnum : R_RealGetTexture(rt)) : r_texture_white->texnum)
 int R_RealGetTexture (rtexture_t *rt);
 
 // returns true if the texture is transparent (useful for rendering code)
@@ -97,12 +99,19 @@ int R_TextureWidth(rtexture_t *rt);
 // returns height of texture, as was specified when it was uploaded
 int R_TextureHeight(rtexture_t *rt);
 
+// only frees the texture if TEXF_PERSISTENT is not set
+// also resets the variable
+void R_PurgeTexture(rtexture_t *prt);
+
 // frees processing buffers each frame, and may someday animate procedural textures
 void R_Textures_Frame(void);
 
 // maybe rename this - sounds awful? [11/21/2007 Black]
 void R_MarkDirtyTexture(rtexture_t *rt);
-void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data); 
+void R_MakeTextureDynamic(rtexture_t *rt, updatecallback_t updatecallback, void *data);
+
+// Clear the texture's contents
+void R_ClearTexture (rtexture_t *rt);
 
 #endif