]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - r_shadow.c
moved brushq3.submodel to brush, removed brushq3.data_thismodel (instead looking...
[xonotic/darkplaces.git] / r_shadow.c
index dc711c29afd3afd6d3ff94d2cfc2dc8be0c83b95..31615386f50e285e95643e472a444380aa7c25aa 100644 (file)
@@ -194,7 +194,7 @@ cvar_t r_shadow_visiblevolumes = {0, "r_shadow_visiblevolumes", "0"};
 cvar_t r_shadow_glsl = {0, "r_shadow_glsl", "1"};
 cvar_t r_shadow_glsl_offsetmapping = {0, "r_shadow_glsl_offsetmapping", "1"};
 cvar_t r_shadow_glsl_offsetmapping_scale = {0, "r_shadow_glsl_offsetmapping_scale", "0.04"};
-cvar_t r_shadow_glsl_offsetmapping_bias = {0, "r_shadow_glsl_offsetmapping_bias", "-0.02"};
+cvar_t r_shadow_glsl_offsetmapping_bias = {0, "r_shadow_glsl_offsetmapping_bias", "-0.04"};
 cvar_t gl_ext_stenciltwoside = {0, "gl_ext_stenciltwoside", "1"};
 cvar_t r_editlights = {0, "r_editlights", "0"};
 cvar_t r_editlights_cursordistance = {0, "r_editlights_distance", "1024"};
@@ -346,7 +346,7 @@ const char *builtinshader_light_frag =
 "      //\n"
 "      // pow(1-(x*x+y*y+z*z), 4) is far more realistic but needs large lights to\n"
 "      // provide significant illumination, large = slow = pain.\n"
-"      float colorscale = clamp(1.0 - dot(CubeVector, CubeVector), 0.0, 1.0);\n"
+"      float colorscale = max(1.0 - dot(CubeVector, CubeVector), 0.0);\n"
 "\n"
 "#ifdef USEFOG\n"
 "      // apply fog\n"
@@ -354,20 +354,16 @@ const char *builtinshader_light_frag =
 "#endif\n"
 "\n"
 "#ifdef USEOFFSETMAPPING\n"
-"      vec2 OffsetVector = normalize(EyeVector).xy * vec2(-1, 1);\n"
-"      TexCoord += OffsetVector * (texture2D(Texture_Normal, TexCoord).w * OffsetMapping_Scale + OffsetMapping_Bias);\n"
-"      TexCoord += OffsetVector * (texture2D(Texture_Normal, TexCoord).w * OffsetMapping_Scale + OffsetMapping_Bias);\n"
-"      TexCoord += OffsetVector * (texture2D(Texture_Normal, TexCoord).w * OffsetMapping_Scale + OffsetMapping_Bias);\n"
-"      TexCoord += OffsetVector * (texture2D(Texture_Normal, TexCoord).w * OffsetMapping_Scale + OffsetMapping_Bias);\n"
-"#endif\n"
-"\n"
-"#ifdef USECUBEFILTER\n"
-"      // apply light cubemap filter\n"
-"      LightColor *= vec3(textureCube(Texture_Cube, CubeVector));\n"
+"      // this is 3 sample because of ATI Radeon 9500-9800/X300 limits\n"
+"      vec2 OffsetVector = normalize(EyeVector).xy * vec2(-0.333, 0.333);\n"
+"      vec2 TexCoordOffset = TexCoord + OffsetVector * (OffsetMapping_Bias + OffsetMapping_Scale * texture2D(Texture_Normal, TexCoord).w);\n"
+"      TexCoordOffset += OffsetVector * (OffsetMapping_Bias + OffsetMapping_Scale * texture2D(Texture_Normal, TexCoordOffset).w);\n"
+"      TexCoordOffset += OffsetVector * (OffsetMapping_Bias + OffsetMapping_Scale * texture2D(Texture_Normal, TexCoordOffset).w);\n"
+"#define TexCoord TexCoordOffset\n"
 "#endif\n"
 "\n"
 "      // get the texels - with a blendmap we'd need to blend multiple here\n"
-"      vec3 surfacenormal = vec3(texture2D(Texture_Normal, TexCoord)) * 2.0 - 1.0;\n"
+"      vec3 surfacenormal = -1.0 + 2.0 * vec3(texture2D(Texture_Normal, TexCoord));\n"
 "      vec3 colortexel = vec3(texture2D(Texture_Color, TexCoord));\n"
 "#ifdef USESPECULAR\n"
 "      vec3 glosstexel = vec3(texture2D(Texture_Gloss, TexCoord));\n"
@@ -375,9 +371,14 @@ const char *builtinshader_light_frag =
 "\n"
 "      // calculate shading\n"
 "      vec3 diffusenormal = normalize(LightVector);\n"
-"      vec3 color = colortexel * (AmbientScale + DiffuseScale * clamp(dot(surfacenormal, diffusenormal), 0.0, 1.0));\n"
+"      vec3 color = colortexel * (AmbientScale + DiffuseScale * max(dot(surfacenormal, diffusenormal), 0.0));\n"
 "#ifdef USESPECULAR\n"
-"      color += glosstexel * (SpecularScale * pow(clamp(dot(surfacenormal, normalize(diffusenormal + normalize(EyeVector))), 0.0, 1.0), SpecularPower));\n"
+"      color += glosstexel * (SpecularScale * pow(max(dot(surfacenormal, normalize(diffusenormal + normalize(EyeVector))), 0.0), SpecularPower));\n"
+"#endif\n"
+"\n"
+"#ifdef USECUBEFILTER\n"
+"      // apply light cubemap filter\n"
+"      color *= vec3(textureCube(Texture_Cube, CubeVector));\n"
 "#endif\n"
 "\n"
 "      // calculate fragment color\n"
@@ -457,6 +458,11 @@ void r_shadow_start(void)
                        vertstrings_list[vertstrings_count++] = vertstring ? vertstring : builtinshader_light_vert;
                        fragstrings_list[fragstrings_count++] = fragstring ? fragstring : builtinshader_light_frag;
                        r_shadow_program_light[i] = GL_Backend_CompileProgram(vertstrings_count, vertstrings_list, fragstrings_count, fragstrings_list);
+                       if (!r_shadow_program_light[i])
+                       {
+                               Con_Printf("permutation %s %s %s %s failed for shader %s, some features may not work properly!\n", i & 1 ? "specular" : "", i & 2 ? "fog" : "", i & 4 ? "cubefilter" : "", i & 8 ? "offsetmapping" : "", "glsl/light");
+                               continue;
+                       }
                        qglUseProgramObjectARB(r_shadow_program_light[i]);
                        qglUniform1iARB(qglGetUniformLocationARB(r_shadow_program_light[i], "Texture_Normal"), 0);CHECKGLERROR
                        qglUniform1iARB(qglGetUniformLocationARB(r_shadow_program_light[i], "Texture_Color"), 1);CHECKGLERROR
@@ -1622,35 +1628,41 @@ void R_Shadow_RenderLighting(int numverts, int numtriangles, const int *elements
                GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 0);
                CHECKGLERROR
                perm = 0;
-               if (specularscale)
+               // only add a feature to the permutation if that permutation exists
+               // (otherwise it might end up not using a shader at all, which looks
+               // worse than using less features)
+               if (specularscale && r_shadow_program_light[perm | SHADERPERMUTATION_SPECULAR])
                        perm |= SHADERPERMUTATION_SPECULAR;
-               //if (fog)
+               //if (fog && r_shadow_program_light[perm | SHADERPERMUTATION_FOG])
                //      perm |= SHADERPERMUTATION_FOG;
-               if (lightcubemap)
+               if (lightcubemap && r_shadow_program_light[perm | SHADERPERMUTATION_CUBEFILTER])
                        perm |= SHADERPERMUTATION_CUBEFILTER;
-               if (r_shadow_glsl_offsetmapping.integer)
+               if (r_shadow_glsl_offsetmapping.integer && r_shadow_program_light[perm | SHADERPERMUTATION_OFFSETMAPPING])
                        perm |= SHADERPERMUTATION_OFFSETMAPPING;
                prog = r_shadow_program_light[perm];
-               qglUseProgramObjectARB(r_shadow_program_light[perm]);
+               qglUseProgramObjectARB(prog);CHECKGLERROR
                // TODO: support fog (after renderer is converted to texture fog)
                if (perm & SHADERPERMUTATION_FOG)
-                       qglUniform1fARB(qglGetUniformLocationARB(prog, "FogRangeRecip"), 0);
-               qglUniform1fARB(qglGetUniformLocationARB(prog, "AmbientScale"), ambientscale);
-               qglUniform1fARB(qglGetUniformLocationARB(prog, "DiffuseScale"), diffusescale);
+               {
+                       qglUniform1fARB(qglGetUniformLocationARB(prog, "FogRangeRecip"), 0);CHECKGLERROR
+               }
+               qglUniform1fARB(qglGetUniformLocationARB(prog, "AmbientScale"), ambientscale);CHECKGLERROR
+               qglUniform1fARB(qglGetUniformLocationARB(prog, "DiffuseScale"), diffusescale);CHECKGLERROR
                if (perm & SHADERPERMUTATION_SPECULAR)
                {
-                       qglUniform1fARB(qglGetUniformLocationARB(prog, "SpecularPower"), 8);
-                       qglUniform1fARB(qglGetUniformLocationARB(prog, "SpecularScale"), specularscale);
+                       qglUniform1fARB(qglGetUniformLocationARB(prog, "SpecularPower"), 8);CHECKGLERROR
+                       qglUniform1fARB(qglGetUniformLocationARB(prog, "SpecularScale"), specularscale);CHECKGLERROR
                }
-               qglUniform3fARB(qglGetUniformLocationARB(prog, "LightColor"), lightcolor[0], lightcolor[1], lightcolor[2]);
-               qglUniform3fARB(qglGetUniformLocationARB(prog, "LightPosition"), relativelightorigin[0], relativelightorigin[1], relativelightorigin[2]);
+               qglUniform3fARB(qglGetUniformLocationARB(prog, "LightColor"), lightcolor[0], lightcolor[1], lightcolor[2]);CHECKGLERROR
+               qglUniform3fARB(qglGetUniformLocationARB(prog, "LightPosition"), relativelightorigin[0], relativelightorigin[1], relativelightorigin[2]);CHECKGLERROR
                if (perm & (SHADERPERMUTATION_SPECULAR | SHADERPERMUTATION_FOG | SHADERPERMUTATION_OFFSETMAPPING))
-                       qglUniform3fARB(qglGetUniformLocationARB(prog, "EyePosition"), relativeeyeorigin[0], relativeeyeorigin[1], relativeeyeorigin[2]);
+               {
+                       qglUniform3fARB(qglGetUniformLocationARB(prog, "EyePosition"), relativeeyeorigin[0], relativeeyeorigin[1], relativeeyeorigin[2]);CHECKGLERROR
+               }
                if (perm & SHADERPERMUTATION_OFFSETMAPPING)
                {
-                       // these are * 0.25 because the offsetmapping shader does the process 4 times
-                       qglUniform1fARB(qglGetUniformLocationARB(prog, "OffsetMapping_Scale"), r_shadow_glsl_offsetmapping_scale.value * 0.25);
-                       qglUniform1fARB(qglGetUniformLocationARB(prog, "OffsetMapping_Bias"), r_shadow_glsl_offsetmapping_bias.value * 0.25);
+                       qglUniform1fARB(qglGetUniformLocationARB(prog, "OffsetMapping_Scale"), r_shadow_glsl_offsetmapping_scale.value);CHECKGLERROR
+                       qglUniform1fARB(qglGetUniformLocationARB(prog, "OffsetMapping_Bias"), r_shadow_glsl_offsetmapping_bias.value);CHECKGLERROR
                }
                CHECKGLERROR
                GL_LockArrays(0, numverts);
@@ -1659,6 +1671,10 @@ void R_Shadow_RenderLighting(int numverts, int numtriangles, const int *elements
                c_rt_lighttris += numtriangles;
                GL_LockArrays(0, 0);
                qglUseProgramObjectARB(0);
+               // HACK HACK HACK: work around for stupid NVIDIA bug that causes GL_OUT_OF_MEMORY and/or software rendering
+               qglBegin(GL_TRIANGLES);
+               qglEnd();
+               CHECKGLERROR
        }
        else if (gl_dot3arb && gl_texturecubemap && gl_combine.integer && gl_stencil)
        {
@@ -2935,7 +2951,7 @@ rtexture_t *R_Shadow_LoadCubemap(const char *basename)
                for (i = 0;i < 6;i++)
                {
                        // generate an image name based on the base and and suffix
-                       snprintf(name, sizeof(name), "%s%s", basename, suffix[j][i].suffix);
+                       dpsnprintf(name, sizeof(name), "%s%s", basename, suffix[j][i].suffix);
                        // load it
                        if ((image_rgba = loadimagepixels(name, false, cubemapsize, cubemapsize)))
                        {
@@ -3028,7 +3044,7 @@ void R_Shadow_UpdateWorldLight(dlight_t *light, vec3_t origin, vec3_t angles, ve
        light->corona = corona;
        if (!cubemapname)
                cubemapname = "";
-       strlcpy(light->cubemapname, cubemapname, strlen(light->cubemapname));
+       strlcpy(light->cubemapname, cubemapname, sizeof(light->cubemapname));
        light->coronasizescale = coronasizescale;
        light->ambientscale = ambientscale;
        light->diffusescale = diffusescale;
@@ -3130,7 +3146,7 @@ void R_Shadow_SelectLightInView(void)
 void R_Shadow_LoadWorldLights(void)
 {
        int n, a, style, shadow, flags;
-       char name[MAX_QPATH], cubemapname[MAX_QPATH], *lightsstring, *s, *t;
+       char tempchar, *lightsstring, *s, *t, name[MAX_QPATH], cubemapname[MAX_QPATH];
        float origin[3], radius, color[3], angles[3], corona, coronasizescale, ambientscale, diffusescale, specularscale;
        if (r_refdef.worldmodel == NULL)
        {
@@ -3163,11 +3179,11 @@ void R_Shadow_LoadWorldLights(void)
                        }
                        */
                        t = s;
-                       while (*s && *s != '\n')
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                                break;
-                       *s = 0;
+                       tempchar = *s;
                        shadow = true;
                        // check for modifier flags
                        if (*t == '!')
@@ -3175,7 +3191,9 @@ void R_Shadow_LoadWorldLights(void)
                                shadow = false;
                                t++;
                        }
+                       *s = 0;
                        a = sscanf(t, "%f %f %f %f %f %f %f %d %s %f %f %f %f %f %f %f %f %i", &origin[0], &origin[1], &origin[2], &radius, &color[0], &color[1], &color[2], &style, cubemapname, &corona, &angles[0], &angles[1], &angles[2], &coronasizescale, &ambientscale, &diffusescale, &specularscale, &flags);
+                       *s = tempchar;
                        if (a < 18)
                                flags = LIGHTFLAG_REALTIMEMODE;
                        if (a < 17)
@@ -3198,7 +3216,6 @@ void R_Shadow_LoadWorldLights(void)
                                cubemapname[strlen(cubemapname)-1] = 0;
                                strcpy(cubemapname, cubemapname + 1);
                        }
-                       *s = '\n';
                        if (a < 8)
                        {
                                Con_Printf("found %d parameters on line %i, should be 8 or more parameters (origin[0] origin[1] origin[2] radius color[0] color[1] color[2] style \"cubemapname\" corona angles[0] angles[1] angles[2] coronasizescale ambientscale diffusescale specularscale flags)\n", a, n + 1);
@@ -3207,7 +3224,10 @@ void R_Shadow_LoadWorldLights(void)
                        VectorScale(color, r_editlights_rtlightscolorscale.value, color);
                        radius *= r_editlights_rtlightssizescale.value;
                        R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, angles, color, radius, corona, style, shadow, cubemapname, coronasizescale, ambientscale, diffusescale, specularscale, flags);
-                       s++;
+                       if (*s == '\r')
+                               s++;
+                       if (*s == '\n')
+                               s++;
                        n++;
                }
                if (*s)
@@ -3269,7 +3289,7 @@ void R_Shadow_SaveWorldLights(void)
 void R_Shadow_LoadLightsFile(void)
 {
        int n, a, style;
-       char name[MAX_QPATH], *lightsstring, *s, *t;
+       char tempchar, *lightsstring, *s, *t, name[MAX_QPATH];
        float origin[3], radius, color[3], subtract, spotdir[3], spotcone, falloff, distbias;
        if (r_refdef.worldmodel == NULL)
        {
@@ -3286,13 +3306,14 @@ void R_Shadow_LoadLightsFile(void)
                while (*s)
                {
                        t = s;
-                       while (*s && *s != '\n')
+                       while (*s && *s != '\n' && *s != '\r')
                                s++;
                        if (!*s)
                                break;
+                       tempchar = *s;
                        *s = 0;
                        a = sscanf(t, "%f %f %f %f %f %f %f %f %f %f %f %f %f %d", &origin[0], &origin[1], &origin[2], &falloff, &color[0], &color[1], &color[2], &subtract, &spotdir[0], &spotdir[1], &spotdir[2], &spotcone, &distbias, &style);
-                       *s = '\n';
+                       *s = tempchar;
                        if (a < 14)
                        {
                                Con_Printf("invalid lights file, found %d parameters on line %i, should be 14 parameters (origin[0] origin[1] origin[2] falloff light[0] light[1] light[2] subtract spotdir[0] spotdir[1] spotdir[2] spotcone distancebias style)\n", a, n + 1);
@@ -3302,7 +3323,10 @@ void R_Shadow_LoadLightsFile(void)
                        radius = bound(15, radius, 4096);
                        VectorScale(color, (2.0f / (8388608.0f)), color);
                        R_Shadow_UpdateWorldLight(R_Shadow_NewWorldLight(), origin, vec3_origin, color, radius, 0, style, true, NULL, 0.25, 0, 1, 1, LIGHTFLAG_REALTIMEMODE);
-                       s++;
+                       if (*s == '\r')
+                               s++;
+                       if (*s == '\n')
+                               s++;
                        n++;
                }
                if (*s)