Made RENDERPATH_GL20 require fbo support and always use it.

[xonotic/darkplaces.git] / render.h

diff --git a/render.h b/render.h
index 81f3a54199a17fe157f024b581556bb7f56c6b6e..5ae6304a413140df310d948c93b58b7ff7d153dc 100644 (file)
--- a/render.h
+++ b/render.h
@@ -501,14 +501,41 @@ void R_SetupShader_DepthOrShadow(qboolean notrippy, qboolean depthrgb, qboolean
 void R_SetupShader_Surface(const float ambientcolor[3], const float diffusecolor[3], const float specularcolor[3], rsurfacepass_t rsurfacepass, int texturenumsurfaces, const msurface_t **texturesurfacelist, void *waterplane, qboolean notrippy);
 void R_SetupShader_DeferredLight(const rtlight_t *rtlight);
 
+typedef struct r_rendertarget_s {
+       // texcoords for sampling from the viewport (clockwise: 0,0 1,0 1,1 0,1)
+       float texcoord2f[8];
+       // textures are this size and type
+       int texturewidth;
+       int textureheight;
+       // TEXTYPE for each color target - usually TEXTYPE_COLORBUFFER16F
+       textype_t colortextype[4];
+       // TEXTYPE for depth target - usually TEXTYPE_DEPTHBUFFER24 or TEXTYPE_SHADOWMAP24_COMP
+       textype_t depthtextype;
+       // if true the depth target will be a renderbuffer rather than a texture (still rtexture_t though)
+       qboolean depthisrenderbuffer;
+       // framebuffer object referencing the textures
+       int fbo;
+       // there can be up to 4 color targets and 1 depth target, the depthtexture
+       // may be a real texture (readable) or just a renderbuffer (not readable,
+       // but potentially faster)
+       rtexture_t *colortexture[4];
+       rtexture_t *depthtexture;
+       // a rendertarget will not be reused in the same frame (realtime == lastusetime),
+       // on a new frame, matching rendertargets will be reused (texturewidth, textureheight, number of color and depth textures and their types),
+       // when a new frame arrives the rendertargets can be reused by requests for matching texturewidth,textureheight and fbo configuration (the number of color and depth textures), when a rendertarget is not reused for > 200ms (realtime - lastusetime > 0.2) the rendertarget's resources will be freed (fbo, textures) and it can be reused for any target in future frames
+       double lastusetime;
+} r_rendertarget_t;
+
+// called each frame after render to delete render targets that have not been used for a while
+void R_RenderTarget_FreeUnused(qboolean force);
+// returns a rendertarget, creates rendertarget if needed or intelligently reuses targets across frames if they match and have not been used already this frame
+r_rendertarget_t *R_RenderTarget_Get(int texturewidth, int textureheight, textype_t depthtextype, qboolean depthisrenderbuffer, textype_t colortextype0, textype_t colortextype1, textype_t colortextype2, textype_t colortextype3);
+
 typedef struct r_waterstate_waterplane_s
 {
-       rtexture_t *texture_refraction; // MATERIALFLAG_WATERSHADER or MATERIALFLAG_REFRACTION
-       rtexture_t *texture_reflection; // MATERIALFLAG_WATERSHADER or MATERIALFLAG_REFLECTION
-       rtexture_t *texture_camera; // MATERIALFLAG_CAMERA
-       int fbo_refraction;
-       int fbo_reflection;
-       int fbo_camera;
+       r_rendertarget_t *rt_refraction; // MATERIALFLAG_WATERSHADER or MATERIALFLAG_REFRACTION
+       r_rendertarget_t *rt_reflection; // MATERIALFLAG_WATERSHADER or MATERIALFLAG_REFLECTION
+       r_rendertarget_t *rt_camera; // MATERIALFLAG_CAMERA
        mplane_t plane;
        int materialflags; // combined flags of all water surfaces on this plane
        unsigned char pvsbits[(MAX_MAP_LEAFS+7)>>3]; // FIXME: buffer overflow on huge maps
@@ -523,7 +550,6 @@ typedef struct r_waterstate_s
        int waterwidth, waterheight;
        int texturewidth, textureheight;
        int camerawidth, cameraheight;
-       rtexture_t *depthtexture;
 
        int maxwaterplanes; // same as MAX_WATERPLANES
        int numwaterplanes;
@@ -542,30 +568,27 @@ r_waterstate_t;
 typedef struct r_framebufferstate_s
 {
        textype_t textype; // type of color buffer we're using (dependent on r_viewfbo cvar)
-       int fbo; // non-zero if r_viewfbo is enabled and working
        int screentexturewidth, screentextureheight; // dimensions of texture
 
-       rtexture_t *colortexture; // non-NULL if fbo is non-zero
-       rtexture_t *depthtexture; // non-NULL if fbo is non-zero
+       // rt_* fields are per-RenderView so we reset them in R_Bloom_StartFrame
+       r_rendertarget_t *rt_screen;
+       r_rendertarget_t *rt_bloom;
+
        rtexture_t *ghosttexture; // for r_motionblur (not recommended on multi-GPU hardware!)
-       rtexture_t *bloomtexture[2]; // for r_bloom, multi-stage processing
-       int bloomfbo[2]; // fbos for rendering into bloomtexture[]
-       int bloomindex; // which bloomtexture[] contains the final image
+       float ghosttexcoord2f[8]; // for r_motionblur
 
        int bloomwidth, bloomheight;
-       int bloomtexturewidth, bloomtextureheight;
 
        // arrays for rendering the screen passes
-       float screentexcoord2f[8]; // texcoords for colortexture or ghosttexture
-       float bloomtexcoord2f[8]; // texcoords for bloomtexture[]
        float offsettexcoord2f[8]; // temporary use while updating bloomtexture[]
 
-       r_viewport_t bloomviewport;
-
        r_waterstate_t water;
 
        qboolean ghosttexture_valid; // don't draw garbage on first frame with motionblur
        qboolean usedepthtextures; // use depth texture instead of depth renderbuffer (faster if you need to read it later anyway)
+
+       // rendertargets (fbo and viewport), these can be reused across frames
+       memexpandablearray_t rendertargets;
 }
 r_framebufferstate_t;