added indirection cube map for shadowmapping and revised filtering modes

[xonotic/darkplaces.git] / r_textures.h

diff --git a/r_textures.h b/r_textures.h
index 4ad5f5e8d2ce9650e6a17241faaeb8d87f1d0404..be1f097208a99820a180729b37d2174446ad460a 100644 (file)
--- a/r_textures.h
+++ b/r_textures.h
@@ -20,15 +20,27 @@
 #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
+// indicates texture should use GL_COMPARE_R_TO_TEXTURE mode
+#define TEXF_COMPARE 0x00000800
 // used for checking if textures mismatch
-#define TEXF_IMPORTANTBITS (TEXF_ALPHA | TEXF_MIPMAP | TEXF_CLAMP | TEXF_FORCENEAREST | TEXF_FORCELINEAR | TEXF_PICMIP | TEXF_COMPRESS)
+#define TEXF_IMPORTANTBITS (TEXF_ALPHA | TEXF_MIPMAP | TEXF_CLAMP | TEXF_FORCENEAREST | TEXF_FORCELINEAR | TEXF_PICMIP | TEXF_COMPRESS | TEXF_COMPARE)
 
-// 8bit paletted
-#define TEXTYPE_PALETTE 1
-// 32bit RGBA
-#define TEXTYPE_RGBA 3
-// 32bit BGRA (preferred format due to faster uploads on most hardware)
-#define TEXTYPE_BGRA 4
+typedef enum textype_e
+{
+       // 8bit paletted
+       TEXTYPE_PALETTE,
+       // 32bit RGBA
+       TEXTYPE_RGBA,
+       // 32bit BGRA (preferred format due to faster uploads on most hardware)
+       TEXTYPE_BGRA,
+       // 32bit S8D24 (24bit depth, 8bit stencil unused)
+       TEXTYPE_SHADOWMAP,
+       // 32bit L16A16
+       TEXTYPE_PROJECTION
+}
+textype_t;
 
 // contents of this structure are mostly private to gl_textures.c
 typedef struct rtexture_s
@@ -67,21 +79,23 @@ extern cvar_t gl_texturecompression_lightcubemaps;
 // add a texture to a pool and optionally precache (upload) it
 // (note: data == NULL is perfectly acceptable)
 // (note: palette must not be NULL if using TEXTYPE_PALETTE)
-rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette);
-rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, int textype, int flags, const unsigned int *palette);
-rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, int textype, int flags, const unsigned int *palette);
-rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, int textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const unsigned char *data, textype_t textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTextureShadowMapRectangle(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, qboolean filter);
+rtexture_t *R_LoadTextureCubeProjection(rtexturepool_t *rtexturepool, const char *identifier, int size, int border);
 
 // free a texture
 void R_FreeTexture(rtexture_t *rt);
 
 // update a portion of the image data of a texture, used by lightmap updates
 // and procedural textures such as video playback.
-void R_UpdateTexture(rtexture_t *rt, unsigned char *data, int x, int y, int width, int height);
+void R_UpdateTexture(rtexture_t *rt, const unsigned char *data, int x, int y, int width, int height);
 
 // 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)
@@ -93,12 +107,19 @@ 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