]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_rmain.c
r_viewfbo 0: skip the postprocessing/blending pass if there is nothing to blend.
[xonotic/darkplaces.git] / gl_rmain.c
index f9bc7499d8a2eca54914a06de4efc1c1a81f213c..f57c30edf0046f47b4e266f306ac9213896de8ac 100644 (file)
@@ -156,12 +156,8 @@ cvar_t gl_skyclip = {CF_CLIENT, "gl_skyclip", "4608", "nehahra farclip distance
 cvar_t r_texture_dds_load = {CF_CLIENT | CF_ARCHIVE, "r_texture_dds_load", "0", "load compressed dds/filename.dds texture instead of filename.tga, if the file exists (requires driver support)"};
 cvar_t r_texture_dds_save = {CF_CLIENT | CF_ARCHIVE, "r_texture_dds_save", "0", "save compressed dds/filename.dds texture when filename.tga is loaded, so that it can be loaded instead next time"};
 
-cvar_t r_textureunits = {CF_CLIENT, "r_textureunits", "32", "number of texture units to use in GL 1.1 and GL 1.3 rendering paths"};
-static cvar_t gl_combine = {CF_CLIENT | CF_READONLY, "gl_combine", "1", "indicates whether the OpenGL 1.3 rendering path is active"};
-static cvar_t r_glsl = {CF_CLIENT | CF_READONLY, "r_glsl", "1", "indicates whether the OpenGL 2.0 rendering path is active"};
-
 cvar_t r_usedepthtextures = {CF_CLIENT | CF_ARCHIVE, "r_usedepthtextures", "1", "use depth texture instead of depth renderbuffer where possible, uses less video memory but may render slower (or faster) depending on hardware"};
-cvar_t r_viewfbo = {CF_CLIENT | CF_ARCHIVE, "r_viewfbo", "0", "enables use of an 8bit (1) or 16bit (2) or 32bit (3) per component float framebuffer render, which may be at a different resolution than the video mode"};
+cvar_t r_viewfbo = {CF_CLIENT | CF_ARCHIVE, "r_viewfbo", "0", "enables use of an 8bit (1) or 16bit (2) or 32bit (3) per component float framebuffer render, which may be at a different resolution than the video mode; the default setting of 0 uses a framebuffer render when required, and renders directly to the screen otherwise"};
 cvar_t r_rendertarget_debug = {CF_CLIENT, "r_rendertarget_debug", "-1", "replaces the view with the contents of the specified render target (by number - note that these can fluctuate depending on scene)"};
 cvar_t r_viewscale = {CF_CLIENT | CF_ARCHIVE, "r_viewscale", "1", "scaling factor for resolution of the fbo rendering method, must be > 0, can be above 1 for a costly antialiasing behavior, typical values are 0.5 for 1/4th as many pixels rendered, or 1 for normal rendering"};
 cvar_t r_viewscale_fpsscaling = {CF_CLIENT | CF_ARCHIVE, "r_viewscale_fpsscaling", "0", "change resolution based on framerate"};
@@ -191,6 +187,7 @@ cvar_t r_glsl_postprocess_uservec2_enable = {CF_CLIENT | CF_ARCHIVE, "r_glsl_pos
 cvar_t r_glsl_postprocess_uservec3_enable = {CF_CLIENT | CF_ARCHIVE, "r_glsl_postprocess_uservec3_enable", "1", "enables postprocessing uservec3 usage, creates USERVEC1 define (only useful if default.glsl has been customized)"};
 cvar_t r_glsl_postprocess_uservec4_enable = {CF_CLIENT | CF_ARCHIVE, "r_glsl_postprocess_uservec4_enable", "1", "enables postprocessing uservec4 usage, creates USERVEC1 define (only useful if default.glsl has been customized)"};
 cvar_t r_colorfringe = {CF_CLIENT | CF_ARCHIVE, "r_colorfringe", "0", "Chromatic aberration. Values higher than 0.025 will noticeably distort the image"};
+cvar_t r_fxaa = {CF_CLIENT | CF_ARCHIVE, "r_fxaa", "0", "fast approximate anti aliasing"};
 
 cvar_t r_water = {CF_CLIENT | CF_ARCHIVE, "r_water", "0", "whether to use reflections and refraction on water surfaces (note: r_wateralpha must be set below 1)"};
 cvar_t r_water_cameraentitiesonly = {CF_CLIENT | CF_ARCHIVE, "r_water_cameraentitiesonly", "0", "whether to only show QC-defined reflections/refractions (typically used for camera- or portal-like effects)"};
@@ -3071,9 +3068,6 @@ static void gl_main_start(void)
        {
        case RENDERPATH_GL32:
        case RENDERPATH_GLES2:
-               Cvar_SetValueQuick(&r_textureunits, MAX_TEXTUREUNITS);
-               Cvar_SetValueQuick(&gl_combine, 1);
-               Cvar_SetValueQuick(&r_glsl, 1);
                r_loadnormalmap = true;
                r_loadgloss = true;
                r_loadfog = false;
@@ -3335,8 +3329,6 @@ void GL_Main_Init(void)
        Cvar_RegisterVariable(&r_transparent_sortarraysize);
        Cvar_RegisterVariable(&r_texture_dds_load);
        Cvar_RegisterVariable(&r_texture_dds_save);
-       Cvar_RegisterVariable(&r_textureunits);
-       Cvar_RegisterVariable(&gl_combine);
        Cvar_RegisterVariable(&r_usedepthtextures);
        Cvar_RegisterVariable(&r_viewfbo);
        Cvar_RegisterVariable(&r_rendertarget_debug);
@@ -3347,7 +3339,6 @@ void GL_Main_Init(void)
        Cvar_RegisterVariable(&r_viewscale_fpsscaling_stepsize);
        Cvar_RegisterVariable(&r_viewscale_fpsscaling_stepmax);
        Cvar_RegisterVariable(&r_viewscale_fpsscaling_target);
-       Cvar_RegisterVariable(&r_glsl);
        Cvar_RegisterVariable(&r_glsl_deluxemapping);
        Cvar_RegisterVariable(&r_glsl_offsetmapping);
        Cvar_RegisterVariable(&r_glsl_offsetmapping_steps);
@@ -3368,6 +3359,7 @@ void GL_Main_Init(void)
        Cvar_RegisterVariable(&r_glsl_postprocess_uservec4_enable);
        Cvar_RegisterVariable(&r_celshading);
        Cvar_RegisterVariable(&r_celoutlines);
+       Cvar_RegisterVariable(&r_fxaa);
 
        Cvar_RegisterVariable(&r_water);
        Cvar_RegisterVariable(&r_water_cameraentitiesonly);
@@ -3960,13 +3952,13 @@ qbool R_CanSeeBox(int numsamples, vec_t eyejitter, vec_t entboxenlarge, vec_t en
        if (BoxesOverlap(boxmins, boxmaxs, eyemins, eyemaxs))
                return true;
 
+       VectorCopy(eye, start);
        // try specific positions in the box first - note that these can be cached
        if (r_cullentities_trace_entityocclusion.integer)
        {
                for (i = 0; i < sizeof(positions) / sizeof(positions[0]); i++)
                {
                        trace_t trace;
-                       VectorCopy(eye, start);
                        end[0] = boxmins[0] + (boxmaxs[0] - boxmins[0]) * positions[i][0];
                        end[1] = boxmins[1] + (boxmaxs[1] - boxmins[1]) * positions[i][1];
                        end[2] = boxmins[2] + (boxmaxs[2] - boxmins[2]) * positions[i][2];
@@ -3977,8 +3969,13 @@ qbool R_CanSeeBox(int numsamples, vec_t eyejitter, vec_t entboxenlarge, vec_t en
                                return true;
                }
        }
-       else if (model->brush.TraceLineOfSight(model, start, end, padmins, padmaxs))
-               return true;
+       else
+       {
+               // try center
+               VectorMAM(0.5f, boxmins, 0.5f, boxmaxs, end);
+               if (model->brush.TraceLineOfSight(model, start, end, padmins, padmaxs))
+                       return true;
+       }
 
        // try various random positions
        for (j = 0; j < numsamples; j++)
@@ -4404,7 +4401,7 @@ void R_SetupView(qbool allowwaterclippingplane, int viewfbo, rtexture_t *viewdep
 {
        const float *customclipplane = NULL;
        float plane[4];
-       int /*rtwidth,*/ rtheight;
+       int viewy_adjusted;
        if (r_refdef.view.useclipplane && allowwaterclippingplane)
        {
                // LadyHavoc: couldn't figure out how to make this approach work the same in DPSOFTRAST
@@ -4419,15 +4416,16 @@ void R_SetupView(qbool allowwaterclippingplane, int viewfbo, rtexture_t *viewdep
                customclipplane = plane;
        }
 
-       //rtwidth = viewfbo ? R_TextureWidth(viewdepthtexture ? viewdepthtexture : viewcolortexture) : vid.width;
-       rtheight = viewfbo ? R_TextureHeight(viewdepthtexture ? viewdepthtexture : viewcolortexture) : vid.height;
+       // GL is weird because it's bottom to top, r_refdef.view.y is top to bottom.
+       // Unless the render target is a FBO...
+       viewy_adjusted = viewfbo ? viewy : vid.height - viewheight - viewy;
 
        if (!r_refdef.view.useperspective)
-               R_Viewport_InitOrtho3D(&r_refdef.view.viewport, &r_refdef.view.matrix, viewx, rtheight - viewheight - viewy, viewwidth, viewheight, r_refdef.view.ortho_x, r_refdef.view.ortho_y, -r_refdef.farclip, r_refdef.farclip, customclipplane);
+               R_Viewport_InitOrtho3D(&r_refdef.view.viewport, &r_refdef.view.matrix, viewx, viewy_adjusted, viewwidth, viewheight, r_refdef.view.ortho_x, r_refdef.view.ortho_y, -r_refdef.farclip, r_refdef.farclip, customclipplane);
        else if (vid.stencil && r_useinfinitefarclip.integer)
-               R_Viewport_InitPerspectiveInfinite(&r_refdef.view.viewport, &r_refdef.view.matrix, viewx, rtheight - viewheight - viewy, viewwidth, viewheight, r_refdef.view.frustum_x, r_refdef.view.frustum_y, r_refdef.nearclip, customclipplane);
+               R_Viewport_InitPerspectiveInfinite(&r_refdef.view.viewport, &r_refdef.view.matrix, viewx, viewy_adjusted, viewwidth, viewheight, r_refdef.view.frustum_x, r_refdef.view.frustum_y, r_refdef.nearclip, customclipplane);
        else
-               R_Viewport_InitPerspective(&r_refdef.view.viewport, &r_refdef.view.matrix, viewx, rtheight - viewheight - viewy, viewwidth, viewheight, r_refdef.view.frustum_x, r_refdef.view.frustum_y, r_refdef.nearclip, r_refdef.farclip, customclipplane);
+               R_Viewport_InitPerspective(&r_refdef.view.viewport, &r_refdef.view.matrix, viewx, viewy_adjusted, viewwidth, viewheight, r_refdef.view.frustum_x, r_refdef.view.frustum_y, r_refdef.nearclip, r_refdef.farclip, customclipplane);
        R_Mesh_SetRenderTargets(viewfbo, viewdepthtexture, viewcolortexture, NULL, NULL, NULL);
        R_SetViewport(&r_refdef.view.viewport);
 }
@@ -4457,11 +4455,15 @@ void R_EntityMatrix(const matrix4x4_t *matrix)
 void R_ResetViewRendering2D_Common(int viewfbo, rtexture_t *viewdepthtexture, rtexture_t *viewcolortexture, int viewx, int viewy, int viewwidth, int viewheight, float x2, float y2)
 {
        r_viewport_t viewport;
+       int viewy_adjusted;
 
        CHECKGLERROR
 
-       // GL is weird because it's bottom to top, r_refdef.view.y is top to bottom
-       R_Viewport_InitOrtho(&viewport, &identitymatrix, viewx, vid.height - viewheight - viewy, viewwidth, viewheight, 0, 0, x2, y2, -10, 100, NULL);
+       // GL is weird because it's bottom to top, r_refdef.view.y is top to bottom.
+       // Unless the render target is a FBO...
+       viewy_adjusted = viewfbo ? viewy : vid.height - viewheight - viewy;
+
+       R_Viewport_InitOrtho(&viewport, &identitymatrix, viewx, viewy_adjusted, viewwidth, viewheight, 0, 0, x2, y2, -10, 100, NULL);
        R_Mesh_SetRenderTargets(viewfbo, viewdepthtexture, viewcolortexture, NULL, NULL, NULL);
        R_SetViewport(&viewport);
        GL_Scissor(viewport.x, viewport.y, viewport.width, viewport.height);
@@ -5241,7 +5243,41 @@ static void R_Bloom_MakeTexture(void)
        r_fb.rt_bloom = cur;
 }
 
-static void R_BlendView(int viewfbo, rtexture_t *viewdepthtexture, rtexture_t *viewcolortexture, int viewx, int viewy, int viewwidth, int viewheight)
+static qbool R_BlendView_IsTrivial(int viewx, int viewy, int viewwidth, int viewheight, int x, int y, int width, int height)
+{
+       // Shifting requested?
+       // (It should be possible to work around this otherwise)
+       if (viewx != x || viewy != y)
+               return false;
+       // Scaling requested?
+       if (viewwidth != width || viewheight != height)
+               return false;
+       // Higher bit depth or explicit FBO requested?
+       if (r_viewfbo.integer)
+               return false;
+       // Motion blur?
+       if(r_refdef.view.ismain && !R_Stereo_Active() && (r_motionblur.value > 0 || (r_damageblur.value > 0 && cl.cshifts[CSHIFT_DAMAGE].percent != 0)) && r_fb.ghosttexture)
+               return false;
+       // Non-trivial postprocessing shader permutation?
+       if (r_fb.bloomwidth
+       || r_refdef.viewblend[3] > 0
+       || !vid_gammatables_trivial
+       || r_glsl_postprocess.integer
+       || ((!R_Stereo_ColorMasking() && r_glsl_saturation.value != 1)))
+               return false;
+       // Other reasons for a non-trivial default postprocessing shader?
+       // (See R_CompileShader_CheckStaticParms but only those relevant for MODE_POSTPROCESS in shader_glsl.h)
+       // Skip: if (r_glsl_saturation_redcompensate.integer) (already covered by saturation above).
+       // Skip: if (r_glsl_postprocess.integer) (already covered by r_glsl_postprocess above).
+       // Skip: if (r_glsl_postprocess_uservec1_enable.integer) (already covered by r_glsl_postprocessing above).
+       if (r_fxaa.integer)
+               return false;
+       if (r_colorfringe.value)
+               return false;
+       return true;
+}
+
+static void R_BlendView(int viewfbo, rtexture_t *viewdepthtexture, rtexture_t *viewcolortexture, int viewx, int viewy, int viewwidth, int viewheight, int fbo, rtexture_t *depthtexture, rtexture_t *colortexture, int x, int y, int width, int height)
 {
        uint64_t permutation;
        float uservecs[4][4];
@@ -5250,7 +5286,7 @@ static void R_BlendView(int viewfbo, rtexture_t *viewdepthtexture, rtexture_t *v
 
        R_EntityMatrix(&identitymatrix);
 
-       if(r_refdef.view.ismain && !R_Stereo_Active() && (r_motionblur.value > 0 || r_damageblur.value > 0) && r_fb.ghosttexture)
+       if(r_refdef.view.ismain && !R_Stereo_Active() && (r_motionblur.value > 0 || (r_damageblur.value > 0 && cl.cshifts[CSHIFT_DAMAGE].percent != 0)) && r_fb.ghosttexture)
        {
                // declare variables
                float blur_factor, blur_mouseaccel, blur_velocity;
@@ -5289,7 +5325,7 @@ static void R_BlendView(int viewfbo, rtexture_t *viewdepthtexture, rtexture_t *v
                cl.motionbluralpha *= lhrandom(1 - r_motionblur_randomize.value, 1 + r_motionblur_randomize.value);
                cl.motionbluralpha = bound(0, cl.motionbluralpha, r_motionblur_maxblur.value);
 
-               // apply the blur
+               // apply the blur on top of the current view
                R_ResetViewRendering2D(viewfbo, viewdepthtexture, viewcolortexture, viewx, viewy, viewwidth, viewheight);
                if (cl.motionbluralpha > 0 && !r_refdef.envmap && r_fb.ghosttexture_valid)
                {
@@ -5331,11 +5367,11 @@ static void R_BlendView(int viewfbo, rtexture_t *viewdepthtexture, rtexture_t *v
                sscanf(r_glsl_postprocess_uservec4.string, "%f %f %f %f", &uservecs[3][0], &uservecs[3][1], &uservecs[3][2], &uservecs[3][3]);
 
        // render to the screen fbo
-       R_ResetViewRendering2D(viewfbo, viewdepthtexture, viewcolortexture, viewx, viewy, viewwidth, viewheight);
+       R_ResetViewRendering2D(fbo, depthtexture, colortexture, x, y, width, height);
        GL_Color(1, 1, 1, 1);
        GL_BlendFunc(GL_ONE, GL_ZERO);
 
-       viewtexture = r_fb.rt_screen->colortexture[0];
+       viewtexture = viewcolortexture;
        bloomtexture = r_fb.rt_bloom ? r_fb.rt_bloom->colortexture[0] : NULL;
 
        if (r_rendertarget_debug.integer >= 0)
@@ -5492,6 +5528,11 @@ void R_UpdateVariables(void)
        if (r_refdef.scene.worldmodel)
        {
                r_refdef.scene.lightmapintensity *= r_refdef.scene.worldmodel->lightmapscale;
+
+               // Apply the default lightstyle to the lightmap even on q3bsp
+               if (cl.worldmodel && cl.worldmodel->type == mod_brushq3) {
+                       r_refdef.scene.lightmapintensity *= r_refdef.scene.rtlightstylevalue[0];
+               }
        }
        if (r_showsurfaces.integer)
        {
@@ -5624,6 +5665,7 @@ void R_RenderView(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture, i
        rtexture_t *viewdepthtexture = NULL;
        rtexture_t *viewcolortexture = NULL;
        int viewx = r_refdef.view.x, viewy = r_refdef.view.y, viewwidth = r_refdef.view.width, viewheight = r_refdef.view.height;
+       qbool skipblend;
 
        // finish any 2D rendering that was queued
        DrawQ_Finish();
@@ -5698,9 +5740,21 @@ void R_RenderView(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture, i
        if(r_fb.rt_bloom)
                r_refdef.view.colorscale *= r_bloom_scenebrightness.value;
 
-       // R_Bloom_StartFrame probably set up an fbo for us to render into, it will be rendered to the window later in R_BlendView
-       if (r_fb.rt_screen)
+       skipblend = R_BlendView_IsTrivial(0, 0, r_fb.rt_screen->texturewidth, r_fb.rt_screen->textureheight, x, y, width, height);
+       if (skipblend)
+       {
+               // Render to the screen right away.
+               viewfbo = fbo;
+               viewdepthtexture = depthtexture;
+               viewcolortexture = colortexture;
+               viewx = x;
+               viewy = y;
+               viewwidth = width;
+               viewheight = height;
+       }
+       else if (r_fb.rt_screen)
        {
+               // R_Bloom_StartFrame probably set up an fbo for us to render into, it will be rendered to the window later in R_BlendView
                viewfbo = r_fb.rt_screen->fbo;
                viewdepthtexture = r_fb.rt_screen->depthtexture;
                viewcolortexture = r_fb.rt_screen->colortexture[0];
@@ -5756,7 +5810,8 @@ void R_RenderView(int fbo, rtexture_t *depthtexture, rtexture_t *colortexture, i
        // postprocess uses textures that are not aligned with the viewport we're rendering, so no scissoring
        GL_ScissorTest(false);
 
-       R_BlendView(fbo, depthtexture, colortexture, x, y, width, height);
+       if (!skipblend)
+               R_BlendView(viewfbo, viewdepthtexture, viewcolortexture, viewx, viewy, viewwidth, viewheight, fbo, depthtexture, colortexture, x, y, width, height);
        if (r_timereport_active)
                R_TimeReport("blendview");
 
@@ -8569,14 +8624,14 @@ static int RSurf_FindWaterPlaneForSurface(const msurface_t *surface)
        // render multiple smaller batches
 }
 
-void RSurf_SetupDepthAndCulling(void)
+void RSurf_SetupDepthAndCulling(bool ui)
 {
        // submodels are biased to avoid z-fighting with world surfaces that they
        // may be exactly overlapping (avoids z-fighting artifacts on certain
        // doors and things in Quake maps)
        GL_DepthRange(0, (rsurface.texture->currentmaterialflags & MATERIALFLAG_SHORTDEPTHRANGE) ? 0.0625 : 1);
        GL_PolygonOffset(rsurface.basepolygonfactor + rsurface.texture->biaspolygonfactor, rsurface.basepolygonoffset + rsurface.texture->biaspolygonoffset);
-       GL_DepthTest(!(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST));
+       GL_DepthTest(!ui && !(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST));
        GL_CullFace((rsurface.texture->currentmaterialflags & MATERIALFLAG_NOCULLFACE) ? GL_NONE : r_refdef.view.cullface_back);
 }
 
@@ -8591,7 +8646,7 @@ static void R_DrawTextureSurfaceList_Sky(int texturenumsurfaces, const msurface_
                return;
        R_SetupShader_Generic_NoTexture(false, false);
        skyrenderlater = true;
-       RSurf_SetupDepthAndCulling();
+       RSurf_SetupDepthAndCulling(false);
        GL_DepthMask(true);
 
        // add the vertices of the surfaces to a world bounding box so we can scissor the sky render later
@@ -8774,7 +8829,7 @@ static void R_DrawTextureSurfaceList_ShowSurfaces(int texturenumsurfaces, const
 static void R_DrawModelTextureSurfaceList(int texturenumsurfaces, const msurface_t **texturesurfacelist, qbool writedepth, qbool prepass, qbool ui)
 {
        CHECKGLERROR
-       RSurf_SetupDepthAndCulling();
+       RSurf_SetupDepthAndCulling(ui);
        if (r_showsurfaces.integer && r_refdef.view.showdebug)
        {
                R_DrawTextureSurfaceList_ShowSurfaces(texturenumsurfaces, texturesurfacelist, writedepth);
@@ -8836,7 +8891,7 @@ static void R_DrawSurface_TransparentCallback(const entity_render_t *ent, const
                                GL_DepthMask(true);
 //                             R_Mesh_ResetTextureState();
                        }
-                       RSurf_SetupDepthAndCulling();
+                       RSurf_SetupDepthAndCulling(false);
                        RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | BATCHNEED_ALLOWMULTIDRAW, texturenumsurfaces, texturesurfacelist);
                        R_SetupShader_DepthOrShadow(false, false, !!rsurface.batchskeletaltransform3x4);
                        R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
@@ -8910,7 +8965,7 @@ static void R_DrawTextureSurfaceList_DepthOnly(int texturenumsurfaces, const msu
                return;
        if (r_fb.water.renderingscene && (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFLECTION)))
                return;
-       RSurf_SetupDepthAndCulling();
+       RSurf_SetupDepthAndCulling(false);
        RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | BATCHNEED_ALLOWMULTIDRAW, texturenumsurfaces, texturesurfacelist);
        R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
        R_SetupShader_DepthOrShadow(false, false, !!rsurface.batchskeletaltransform3x4);