add r_glsl_saturation_redcompensate optional effect to r_glsl_saturate (only works...

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10529 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=60735ece67a401288eb8f3cf957f726f9011b964

diff --git a/gl_rmain.c b/gl_rmain.c
index 14880d48bd638ca651b5e1e1087d918573e8ad67..12d225c752a2b363c91199e5f9fbbb2d379bbccf 100644 (file)
--- a/gl_rmain.c
+++ b/gl_rmain.c
@@ -185,6 +185,7 @@ cvar_t r_overheadsprites_perspective = {CVAR_SAVE, "r_overheadsprites_perspectiv
 cvar_t r_overheadsprites_pushback = {CVAR_SAVE, "r_overheadsprites_pushback", "16", "how far to pull the SPR_OVERHEAD sprites toward the eye (used to avoid intersections with 3D models)"};
 
 cvar_t r_glsl_saturation = {CVAR_SAVE, "r_glsl_saturation", "1", "saturation multiplier (only working in glsl!)"};
+cvar_t r_glsl_saturation_redcompensate = {CVAR_SAVE, "r_glsl_saturation_redcompensate", "0", "a 'vampire sight' addition to desaturation effect, does compensation for red color, r_glsl_restart is required"};
 
 cvar_t r_framedatasize = {CVAR_SAVE, "r_framedatasize", "1", "size of renderer data cache used during one frame (for skeletal animation caching, light processing, etc)"};
 
@@ -743,8 +744,16 @@ static const char *builtinshaderstring =
 "#ifdef USESATURATION\n"
 "      //apply saturation BEFORE gamma ramps, so v_glslgamma value does not matter\n"
 "      float y = dot(gl_FragColor.rgb, vec3(0.299, 0.587, 0.114));\n"
-"      //gl_FragColor = vec3(y) + (gl_FragColor.rgb - vec3(y)) * Saturation;\n"
-"      gl_FragColor.rgb = mix(vec3(y), gl_FragColor.rgb, Saturation);\n"
+"      // 'vampire sight' effect, wheres red is compensated\n"
+"      #ifdef SATURATION_REDCOMPENSATE\n"
+"              float rboost = max(0.0, (gl_FragColor.r - max(gl_FragColor.g, gl_FragColor.b))*(1.0 - Saturation));\n"
+"              gl_FragColor.rgb = mix(vec3(y), gl_FragColor.rgb, Saturation);\n"
+"              gl_FragColor.r += rboost;\n"
+"      #else\n"
+"              // normal desaturation\n"
+"              //gl_FragColor = vec3(y) + (gl_FragColor.rgb - vec3(y)) * Saturation;\n"
+"              gl_FragColor.rgb = mix(vec3(y), gl_FragColor.rgb, Saturation);\n"
+"      #endif\n"
 "#endif\n"
 "\n"
 "#ifdef USEGAMMARAMPS\n"
@@ -927,6 +936,7 @@ static const char *builtinshaderstring =
 "uniform vec4 ReflectColor;\n"
 "uniform float ReflectFactor;\n"
 "uniform float ReflectOffset;\n"
+"uniform float ClientTime;\n"
 "\n"
 "void main(void)\n"
 "{\n"
@@ -934,24 +944,28 @@ static const char *builtinshaderstring =
 "      //vec4 ScreenTexCoord = (ModelViewProjectionPosition.xyxy + normalize(vec3(texture2D(Texture_Normal, TexCoord)) - vec3(0.5)).xyxy * DistortScaleRefractReflect * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect;\n"
 "      vec4 SafeScreenTexCoord = ModelViewProjectionPosition.xyxy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect;\n"
 "      //SafeScreenTexCoord = gl_FragCoord.xyxy * vec4(1.0 / 1920.0, 1.0 / 1200.0, 1.0 / 1920.0, 1.0 / 1200.0);\n"
-"      vec4 ScreenTexCoord = SafeScreenTexCoord + vec2(normalize(vec3(texture2D(Texture_Normal, TexCoord)) - vec3(0.5))).xyxy * DistortScaleRefractReflect;\n"
+"      // slight water animation via 2 layer scrolling (todo: tweak)\n"
+"      vec3 normal = texture2D(Texture_Normal, TexCoord + vec2(0.08, 0.08)*ClientTime*0.5).rgb - vec3(1.0);\n"
+"      normal += texture2D(Texture_Normal, (TexCoord + vec2(-0.06, -0.09)*ClientTime)*0.75).rgb;\n"
+"      vec4 ScreenTexCoord = SafeScreenTexCoord + vec2(normalize(normal) + vec3(0.15)).xyxy * DistortScaleRefractReflect;\n"
 "      // FIXME temporary hack to detect the case that the reflection\n"
 "      // gets blackened at edges due to leaving the area that contains actual\n"
 "      // content.\n"
 "      // Remove this 'ack once we have a better way to stop this thing from\n"
 "      // 'appening.\n"
-"      float f = min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(0.01, 0.01)).rgb) / 0.05);\n"
-"      f      *= min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(0.01, -0.01)).rgb) / 0.05);\n"
-"      f      *= min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(-0.01, 0.01)).rgb) / 0.05);\n"
-"      f      *= min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(-0.01, -0.01)).rgb) / 0.05);\n"
-"      ScreenTexCoord.xy = mix(SafeScreenTexCoord.xy, ScreenTexCoord.xy, f);\n"
-"      f       = min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(0.01, 0.01)).rgb) / 0.05);\n"
-"      f      *= min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(0.01, -0.01)).rgb) / 0.05);\n"
-"      f      *= min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(-0.01, 0.01)).rgb) / 0.05);\n"
-"      f      *= min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(-0.01, -0.01)).rgb) / 0.05);\n"
+"      float f1 = min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(0.005, 0.01)).rgb) / 0.002);\n"
+"      f1      *= min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(0.005, -0.01)).rgb) / 0.002);\n"
+"      f1      *= min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(-0.005, 0.01)).rgb) / 0.002);\n"
+"      f1      *= min(1.0, length(texture2D(Texture_Refraction, ScreenTexCoord.xy + vec2(-0.005, -0.01)).rgb) / 0.002);\n"
+"      ScreenTexCoord.xy = mix(SafeScreenTexCoord.xy, ScreenTexCoord.xy, f1);\n"
+"      float f = min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(0.005, 0.005)).rgb) / 0.002);\n"
+"      f      *= min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(0.005, -0.005)).rgb) / 0.002);\n"
+"      f      *= min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(-0.005, 0.005)).rgb) / 0.002);\n"
+"      f      *= min(1.0, length(texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(-0.005, -0.005)).rgb) / 0.002);\n"
 "      ScreenTexCoord.zw = mix(SafeScreenTexCoord.zw, ScreenTexCoord.zw, f);\n"
 "      float Fresnel = pow(min(1.0, 1.0 - float(normalize(EyeVector).z)), 2.0) * ReflectFactor + ReflectOffset;\n"
 "      gl_FragColor = mix(vec4(texture2D(Texture_Refraction, ScreenTexCoord.xy).rgb, 1) * RefractColor, vec4(texture2D(Texture_Reflection, ScreenTexCoord.zw).rgb, 1) * ReflectColor, Fresnel);\n"
+"      gl_FragColor.a = f1 + 0.5;\n"
 "}\n"
 "#endif\n"
 "#else // !MODE_WATER\n"
@@ -2018,8 +2032,16 @@ const char *builtincgshaderstring =
 "#ifdef USESATURATION\n"
 "      //apply saturation BEFORE gamma ramps, so v_glslgamma value does not matter\n"
 "      float y = dot(gl_FragColor.rgb, float3(0.299, 0.587, 0.114));\n"
-"      //gl_FragColor = float3(y) + (gl_FragColor.rgb - float3(y)) * Saturation;\n"
-"      gl_FragColor.rgb = lerp(float3(y), gl_FragColor.rgb, Saturation);\n"
+"      // 'vampire sight' effect, wheres red is compensated\n"
+"      #ifdef SATURATION_REDCOMPENSATE\n"
+"              float rboost = max(0.0, (gl_FragColor.r - max(gl_FragColor.g, gl_FragColor.b))*(1.0 - Saturation));\n"
+"              gl_FragColor.rgb = mix(float3(y,y,y), gl_FragColor.rgb, Saturation);\n"
+"              gl_FragColor.r += r;\n"
+"      #else\n"
+"              // normal desaturation\n"
+"              //gl_FragColor = float3(y,y,y) + (gl_FragColor.rgb - float3(y)) * Saturation;\n"
+"              gl_FragColor.rgb = lerp(float3(y,y,y), gl_FragColor.rgb, Saturation);\n"
+"      #endif\n"
 "#endif\n"
 "\n"
 "#ifdef USEGAMMARAMPS\n"
@@ -3594,6 +3616,21 @@ r_glsl_permutation_t;
 
 #define SHADERPERMUTATION_HASHSIZE 256
 
+// this called both on R_GLSL_CompileShader and R_HLSL_CacheShader
+// this function adds more "#define" to supply static parms, could be used by game-specific code part
+int vertstrings_count = 0;
+int geomstrings_count = 0;
+int fragstrings_count = 0;
+const char *vertstrings_list[64+3];
+const char *geomstrings_list[64+3];
+const char *fragstrings_list[64+3];
+void R_CompileShader_AddStaticParms(unsigned int mode, unsigned int permutation)
+{
+       if (mode == SHADERMODE_POSTPROCESS && (permutation & SHADERPERMUTATION_SATURATION))
+               if (r_glsl_saturation_redcompensate.integer)
+                       fragstrings_list[fragstrings_count++] = "#define SATURATION_REDCOMPENSATE\n";
+}
+
 /// information about each possible shader permutation
 r_glsl_permutation_t *r_glsl_permutationhash[SHADERMODE_COUNT][SHADERPERMUTATION_HASHSIZE];
 /// currently selected permutation
@@ -3659,13 +3696,7 @@ static void R_GLSL_CompilePermutation(r_glsl_permutation_t *p, unsigned int mode
 {
        int i;
        shadermodeinfo_t *modeinfo = glslshadermodeinfo + mode;
-       int vertstrings_count = 0;
-       int geomstrings_count = 0;
-       int fragstrings_count = 0;
        char *vertexstring, *geometrystring, *fragmentstring;
-       const char *vertstrings_list[32+3];
-       const char *geomstrings_list[32+3];
-       const char *fragstrings_list[32+3];
        char permutationname[256];
 
        if (p->compiled)
@@ -3682,6 +3713,9 @@ static void R_GLSL_CompilePermutation(r_glsl_permutation_t *p, unsigned int mode
 
        // the first pretext is which type of shader to compile as
        // (later these will all be bound together as a program object)
+       vertstrings_count = 0;
+       geomstrings_count = 0;
+       fragstrings_count = 0;
        vertstrings_list[vertstrings_count++] = "#define VERTEX_SHADER\n";
        geomstrings_list[geomstrings_count++] = "#define GEOMETRY_SHADER\n";
        fragstrings_list[fragstrings_count++] = "#define FRAGMENT_SHADER\n";
@@ -3711,6 +3745,9 @@ static void R_GLSL_CompilePermutation(r_glsl_permutation_t *p, unsigned int mode
                }
        }
 
+       // add static parms
+       R_CompileShader_AddStaticParms(mode, permutation);
+
        // now append the shader text itself
        vertstrings_list[vertstrings_count++] = vertexstring;
        geomstrings_list[geomstrings_count++] = geometrystring;
@@ -4085,15 +4122,12 @@ static void R_CG_CompilePermutation(r_cg_permutation_t *p, unsigned int mode, un
 {
        int i;
        shadermodeinfo_t *modeinfo = cgshadermodeinfo + mode;
-       int vertstrings_count = 0, vertstring_length = 0;
-       int geomstrings_count = 0, geomstring_length = 0;
-       int fragstrings_count = 0, fragstring_length = 0;
+       int vertstring_length = 0;
+       int geomstring_length = 0;
+       int fragstring_length = 0;
        char *t;
        char *vertexstring, *geometrystring, *fragmentstring;
        char *vertstring, *geomstring, *fragstring;
-       const char *vertstrings_list[32+3];
-       const char *geomstrings_list[32+3];
-       const char *fragstrings_list[32+3];
        char permutationname[256];
        char cachename[256];
        CGprofile vertexProfile;
@@ -4116,6 +4150,9 @@ static void R_CG_CompilePermutation(r_cg_permutation_t *p, unsigned int mode, un
 
        // the first pretext is which type of shader to compile as
        // (later these will all be bound together as a program object)
+       vertstrings_count = 0;
+       geomstrings_count = 0;
+       fragstrings_count = 0;
        vertstrings_list[vertstrings_count++] = "#define VERTEX_SHADER\n";
        geomstrings_list[geomstrings_count++] = "#define GEOMETRY_SHADER\n";
        fragstrings_list[fragstrings_count++] = "#define FRAGMENT_SHADER\n";
@@ -4147,6 +4184,9 @@ static void R_CG_CompilePermutation(r_cg_permutation_t *p, unsigned int mode, un
                }
        }
 
+       // add static parms
+       R_CompileShader_AddStaticParms(mode, permutation);
+
        // replace spaces in the cachename with _ characters
        for (i = 0;cachename[i];i++)
                if (cachename[i] == ' ')
@@ -6695,6 +6735,7 @@ void GL_Main_Init(void)
        Cvar_RegisterVariable(&r_test);
        Cvar_RegisterVariable(&r_batchmode);
        Cvar_RegisterVariable(&r_glsl_saturation);
+       Cvar_RegisterVariable(&r_glsl_saturation_redcompensate);
        Cvar_RegisterVariable(&r_framedatasize);
        if (gamemode == GAME_NEHAHRA || gamemode == GAME_TENEBRAE)
                Cvar_SetValue("r_fullbrights", 0);