convert lightmaps to sRGB for nice sRGB support

[xonotic/darkplaces.git] / model_shared.c

diff --git a/model_shared.c b/model_shared.c
index dc332803672d8bad3a7d2e3e8bd2be0afbb3f291..47b4c58fabedfde42ed40f62707e0f17c9a13598 100644 (file)
--- a/model_shared.c
+++ b/model_shared.c
@@ -1623,8 +1623,11 @@ static void Q3Shader_AddToHash (q3shaderinfo_t* shader)
 
 extern cvar_t mod_noshader_default_offsetmapping;
 extern cvar_t mod_q3shader_default_offsetmapping;
+extern cvar_t mod_q3shader_default_offsetmapping_scale;
+extern cvar_t mod_q3shader_default_offsetmapping_bias;
 extern cvar_t mod_q3shader_default_polygonoffset;
 extern cvar_t mod_q3shader_default_polygonfactor;
+extern cvar_t mod_q3shader_force_addalpha;
 void Mod_LoadQ3Shaders(void)
 {
        int j;
@@ -1713,7 +1716,8 @@ void Mod_LoadQ3Shaders(void)
                        Vector4Set(shader.reflectcolor4f, 1, 1, 1, 1);
                        shader.r_water_wateralpha = 1;
                        shader.offsetmapping = (mod_q3shader_default_offsetmapping.value) ? OFFSETMAPPING_DEFAULT : OFFSETMAPPING_OFF;
-                       shader.offsetscale = 1;
+                       shader.offsetscale = mod_q3shader_default_offsetmapping_scale.value;
+                       shader.offsetbias = mod_q3shader_default_offsetmapping_bias.value;
                        shader.specularscalemod = 1;
                        shader.specularpowermod = 1;
                        shader.biaspolygonoffset = mod_q3shader_default_polygonoffset.value;
@@ -1786,6 +1790,11 @@ void Mod_LoadQ3Shaders(void)
                                                                        layer->blendfunc[0] = GL_ONE;
                                                                        layer->blendfunc[1] = GL_ONE;
                                                                }
+                                                               else if (!strcasecmp(parameter[1], "addalpha"))
+                                                               {
+                                                                       layer->blendfunc[0] = GL_SRC_ALPHA;
+                                                                       layer->blendfunc[1] = GL_ONE;
+                                                               }
                                                                else if (!strcasecmp(parameter[1], "filter"))
                                                                {
                                                                        layer->blendfunc[0] = GL_DST_COLOR;
@@ -1813,7 +1822,7 @@ void Mod_LoadQ3Shaders(void)
                                                                        else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
                                                                                layer->blendfunc[k] = GL_DST_COLOR;
                                                                        else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
-                                                                               layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
+                                                                               layer->blendfunc[k] = GL_DST_ALPHA;
                                                                        else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
                                                                                layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
                                                                        else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
@@ -1967,7 +1976,32 @@ void Mod_LoadQ3Shaders(void)
                                                        shader.textureblendalpha = true;
                                                }
                                        }
-                                       layer->texflags = TEXF_ALPHA;
+
+                                       if(mod_q3shader_force_addalpha.integer)
+                                       {
+                                               // for a long while, DP treated GL_ONE GL_ONE as GL_SRC_ALPHA GL_ONE
+                                               // this cvar brings back this behaviour
+                                               if(layer->blendfunc[0] == GL_ONE && layer->blendfunc[1] == GL_ONE)
+                                                       layer->blendfunc[0] = GL_SRC_ALPHA;
+                                       }
+
+                                       layer->texflags = 0;
+                                       if (layer->alphatest)
+                                               layer->texflags |= TEXF_ALPHA;
+                                       switch(layer->blendfunc[0])
+                                       {
+                                               case GL_SRC_ALPHA:
+                                               case GL_ONE_MINUS_SRC_ALPHA:
+                                                       layer->texflags |= TEXF_ALPHA;
+                                                       break;
+                                       }
+                                       switch(layer->blendfunc[1])
+                                       {
+                                               case GL_SRC_ALPHA:
+                                               case GL_ONE_MINUS_SRC_ALPHA:
+                                                       layer->texflags |= TEXF_ALPHA;
+                                                       break;
+                                       }
                                        if (!(shader.surfaceparms & Q3SURFACEPARM_NOMIPMAPS))
                                                layer->texflags |= TEXF_MIPMAP;
                                        if (!(shader.textureflags & Q3TEXTUREFLAG_NOPICMIP))
@@ -2228,17 +2262,29 @@ void Mod_LoadQ3Shaders(void)
                                {
                                        shader.rtlightambient = atof(parameter[1]);
                                }
-                               else if (!strcasecmp(parameter[0], "dpoffsetmapping") && numparameters >= 3)
+                               else if (!strcasecmp(parameter[0], "dpoffsetmapping") && numparameters >= 2)
                                {
                                        if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "off"))
                                                shader.offsetmapping = OFFSETMAPPING_OFF;
-                                       else if (!strcasecmp(parameter[1], "default"))
+                                       else if (!strcasecmp(parameter[1], "default") || !strcasecmp(parameter[1], "normal"))
                                                shader.offsetmapping = OFFSETMAPPING_DEFAULT;
                                        else if (!strcasecmp(parameter[1], "linear"))
                                                shader.offsetmapping = OFFSETMAPPING_LINEAR;
                                        else if (!strcasecmp(parameter[1], "relief"))
                                                shader.offsetmapping = OFFSETMAPPING_RELIEF;
-                                       shader.offsetscale = atof(parameter[2]);
+                                       if (numparameters >= 3)
+                                               shader.offsetscale = atof(parameter[2]);
+                                       if (numparameters >= 5)
+                                       {
+                                               if(!strcasecmp(parameter[3], "bias"))
+                                                       shader.offsetbias = atof(parameter[4]);
+                                               else if(!strcasecmp(parameter[3], "match"))
+                                                       shader.offsetbias = 1.0f - atof(parameter[4]);
+                                               else if(!strcasecmp(parameter[3], "match8"))
+                                                       shader.offsetbias = 1.0f - atof(parameter[4]) / 255.0f;
+                                               else if(!strcasecmp(parameter[3], "match16"))
+                                                       shader.offsetbias = 1.0f - atof(parameter[4]) / 65535.0f;
+                                       }
                                }
                                else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
                                {
@@ -2362,8 +2408,10 @@ qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qbool
        // unless later loaded from the shader
        texture->offsetmapping = (mod_noshader_default_offsetmapping.value) ? OFFSETMAPPING_DEFAULT : OFFSETMAPPING_OFF;
        texture->offsetscale = 1;
+       texture->offsetbias = 0;
        texture->specularscalemod = 1;
        texture->specularpowermod = 1; 
+       texture->rtlightambient = 0;
        // WHEN ADDING DEFAULTS HERE, REMEMBER TO SYNC TO SHADER LOADING ABOVE
        // HERE, AND Q1BSP LOADING
        // JUST GREP FOR "specularscalemod = 1".
@@ -2511,6 +2559,7 @@ nothing                GL_ZERO GL_ONE
                Vector2Copy(shader->r_water_waterscroll, texture->r_water_waterscroll);
                texture->offsetmapping = shader->offsetmapping;
                texture->offsetscale = shader->offsetscale;
+               texture->offsetbias = shader->offsetbias;
                texture->specularscalemod = shader->specularscalemod;
                texture->specularpowermod = shader->specularpowermod;
                texture->rtlightambient = shader->rtlightambient;