r_water, MODE_REFRACTION: support alphaGen vertex for fading out water

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@11616 d7cf8633-e32d-0410-b094-e92efae38249
::stable-branch::merge=2622546207b940ab27d8c7423e2d4af7aef58067

diff --git a/gl_rmain.c b/gl_rmain.c
index 4b0ca40ce213bc50a1317bd5d0e1034845556254..8c88310c5b99e2986ef371a39eebbd4b288c1070 100644 (file)
--- a/gl_rmain.c
+++ b/gl_rmain.c
@@ -2146,6 +2146,8 @@ void R_SetupShader_Surface(const vec3_t lightcolorbase, qboolean modellighting,
                if (rsurface.texture->currentmaterialflags & MATERIALFLAG_WATERSHADER)
                {
                        mode = SHADERMODE_WATER;
+                       if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHAGEN_VERTEX)
+                               permutation |= SHADERPERMUTATION_ALPHAGEN_VERTEX;
                        if((r_wateralpha.value < 1) && (rsurface.texture->currentmaterialflags & MATERIALFLAG_WATERALPHA))
                        {
                                // this is the right thing to do for wateralpha
@@ -2162,6 +2164,8 @@ void R_SetupShader_Surface(const vec3_t lightcolorbase, qboolean modellighting,
                else if (rsurface.texture->currentmaterialflags & MATERIALFLAG_REFRACTION)
                {
                        mode = SHADERMODE_REFRACTION;
+                       if (rsurface.texture->currentmaterialflags & MATERIALFLAG_ALPHAGEN_VERTEX)
+                               permutation |= SHADERPERMUTATION_ALPHAGEN_VERTEX;
                        GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
                        blendfuncflags = R_BlendFuncFlags(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
                }

diff --git a/shader_glsl.h b/shader_glsl.h
index aa962c850ac8eff6930cdedb3537e915aab59bf4..f968e3eb852a5f4fc4dcf3718f7c012b190c0765 100644 (file)
--- a/shader_glsl.h
+++ b/shader_glsl.h
@@ -416,6 +416,9 @@
 "\n"
 "void main(void)\n"
 "{\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      VertexColor = Attrib_Color;\n"
+"#endif\n"
 "      TexCoord = vec2(TexMatrix * Attrib_TexCoord0);\n"
 "      gl_Position = ModelViewProjectionMatrix * Attrib_Position;\n"
 "      ModelViewProjectionPosition = gl_Position;\n"
@@ -444,12 +447,19 @@
 "      vec2 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect.xy * (1.0 / ModelViewProjectionPosition.w);\n"
 "      //vec2 ScreenTexCoord = (ModelViewProjectionPosition.xy + normalize(vec3(dp_texture2D(Texture_Normal, TexCoord)) - vec3(0.5)).xy * DistortScaleRefractReflect.xy * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n"
 "      vec2 SafeScreenTexCoord = ModelViewProjectionPosition.xy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      vec2 distort = DistortScaleRefractReflect.xy * VertexColor.a;\n"
+"      vec4 refractcolor = mix(RefractColor, vec4(1.0, 1.0, 1.0, 1.0), VertexColor.a);\n"
+"#else\n"
+"      vec2 distort = DistortScaleRefractReflect.xy;\n"
+"      vec4 refractcolor = RefractColor;\n"
+"#endif\n"
 "      #ifdef USENORMALMAPSCROLLBLEND\n"
 "              vec3 normal = dp_texture2D(Texture_Normal, (TexCoord + vec2(0.08, 0.08)*ClientTime*NormalmapScrollBlend.x*0.5)*NormalmapScrollBlend.y).rgb - vec3(1.0);\n"
 "              normal += dp_texture2D(Texture_Normal, (TexCoord + vec2(-0.06, -0.09)*ClientTime*NormalmapScrollBlend.x)*NormalmapScrollBlend.y*0.75).rgb;\n"
-"              vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(cast_myhalf3(normal))).xy * DistortScaleRefractReflect.xy;\n"
+"              vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(cast_myhalf3(normal))).xy * distort;\n"
 "      #else\n"
-"              vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(cast_myhalf3(dp_texture2D(Texture_Normal, TexCoord)) - cast_myhalf3(0.5))).xy * DistortScaleRefractReflect.xy;\n"
+"              vec2 ScreenTexCoord = SafeScreenTexCoord + vec3(normalize(cast_myhalf3(dp_texture2D(Texture_Normal, TexCoord)) - cast_myhalf3(0.5))).xy * distort;\n"
 "      #endif\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"
@@ -461,7 +471,7 @@
 "      f      *= min(1.0, length(dp_texture2D(Texture_Refraction, ScreenTexCoord + vec2(-0.01, 0.01)).rgb) / 0.05);\n"
 "      f      *= min(1.0, length(dp_texture2D(Texture_Refraction, ScreenTexCoord + vec2(-0.01, -0.01)).rgb) / 0.05);\n"
 "      ScreenTexCoord = mix(SafeScreenTexCoord, ScreenTexCoord, f);\n"
-"      dp_FragColor = vec4(dp_texture2D(Texture_Refraction, ScreenTexCoord).rgb, 1.0) * RefractColor;\n"
+"      dp_FragColor = vec4(dp_texture2D(Texture_Refraction, ScreenTexCoord).rgb, 1.0) * refractcolor;\n"
 "}\n"
 "#endif\n"
 "#else // !MODE_REFRACTION\n"
@@ -479,6 +489,9 @@
 "\n"
 "void main(void)\n"
 "{\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      VertexColor = Attrib_Color;\n"
+"#endif\n"
 "      TexCoord = vec2(TexMatrix * Attrib_TexCoord0);\n"
 "      vec3 EyeRelative = EyePosition - Attrib_Position.xyz;\n"
 "      EyeVector.x = dot(EyeRelative, Attrib_TexCoord1.xyz);\n"
@@ -516,12 +529,23 @@
 "      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"
 "      // slight water animation via 2 layer scrolling (todo: tweak)\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      vec4 distort = DistortScaleRefractReflect * VertexColor.a;\n"
+"      float reflectoffset = ReflectOffset * VertexColor.a;\n"
+"      float reflectfactor = ReflectFactor * VertexColor.a;\n"
+"      vec4 refractcolor = mix(RefractColor, vec4(1.0, 1.0, 1.0, 1.0), VertexColor.a);\n"
+"#else\n"
+"      vec4 distort = DistortScaleRefractReflect;\n"
+"      float reflectoffset = ReflectOffset;\n"
+"      float reflectfactor = ReflectFactor;\n"
+"      vec4 refractcolor = RefractColor;\n"
+"#endif\n"
 "      #ifdef USENORMALMAPSCROLLBLEND\n"
 "              vec3 normal = dp_texture2D(Texture_Normal, (TexCoord + vec2(0.08, 0.08)*ClientTime*NormalmapScrollBlend.x*0.5)*NormalmapScrollBlend.y).rgb - vec3(1.0);\n"
 "              normal += dp_texture2D(Texture_Normal, (TexCoord + vec2(-0.06, -0.09)*ClientTime*NormalmapScrollBlend.x)*NormalmapScrollBlend.y*0.75).rgb;\n"
-"              vec4 ScreenTexCoord = SafeScreenTexCoord + vec2(normalize(normal) + vec3(0.15)).xyxy * DistortScaleRefractReflect;\n"
+"              vec4 ScreenTexCoord = SafeScreenTexCoord + vec2(normalize(normal) + vec3(0.15)).xyxy * distort;\n"
 "      #else\n"
-"              vec4 ScreenTexCoord = SafeScreenTexCoord + vec2(normalize(vec3(dp_texture2D(Texture_Normal, TexCoord)) - vec3(0.5))).xyxy * DistortScaleRefractReflect;\n"
+"              vec4 ScreenTexCoord = SafeScreenTexCoord + vec2(normalize(vec3(dp_texture2D(Texture_Normal, TexCoord)) - vec3(0.5))).xyxy * distort;\n"
 "      #endif\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"
@@ -538,8 +562,8 @@
 "      f *= min(1.0, length(dp_texture2D(Texture_Reflection, ScreenTexCoord.zw + vec2(-0.005, 0.005)).rgb) / 0.002);\n"
 "      f *= min(1.0, length(dp_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"
-"      dp_FragColor = mix(vec4(dp_texture2D(Texture_Refraction, ScreenTexCoord.xy).rgb, 1) * RefractColor, vec4(dp_texture2D(Texture_Reflection, ScreenTexCoord.zw).rgb, 1) * ReflectColor, Fresnel);\n"
+"      float Fresnel = pow(min(1.0, 1.0 - float(normalize(EyeVector).z)), 2.0) * reflectfactor + reflectoffset;\n"
+"      dp_FragColor = mix(vec4(dp_texture2D(Texture_Refraction, ScreenTexCoord.xy).rgb, 1) * refractcolor, vec4(dp_texture2D(Texture_Reflection, ScreenTexCoord.zw).rgb, 1) * ReflectColor, Fresnel);\n"
 "}\n"
 "#endif\n"
 "#else // !MODE_WATER\n"

diff --git a/shader_hlsl.h b/shader_hlsl.h
index 78f291c619449265a5aed050caafe5f586188f05..d09307cfcf57e671e6f6a2c61fecd2cb607533f1 100644 (file)
--- a/shader_hlsl.h
+++ b/shader_hlsl.h
@@ -384,15 +384,24 @@
 "(\n"
 "float4 gl_Vertex : POSITION,\n"
 "uniform float4x4 ModelViewProjectionMatrix : register(c8),\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"float4 gl_Color : COLOR0,\n"
+"#endif\n"
 "float4 gl_MultiTexCoord0 : TEXCOORD0,\n"
 "uniform float4x4 TexMatrix : register(c0),\n"
 "uniform float3 EyePosition : register(c24),\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"out float4 gl_FrontColor : COLOR,\n"
+"#endif\n"
 "out float4 gl_Position : POSITION,\n"
 "out float2 TexCoord : TEXCOORD0,\n"
 "out float3 EyeVector : TEXCOORD1,\n"
 "out float4 ModelViewProjectionPosition : TEXCOORD2\n"
 ")\n"
 "{\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      gl_FrontColor = gl_Color;\n"
+"#endif\n"
 "      TexCoord = mul(TexMatrix, gl_MultiTexCoord0).xy;\n"
 "      gl_Position = mul(ModelViewProjectionMatrix, gl_Vertex);\n"
 "      ModelViewProjectionPosition = gl_Position;\n"
@@ -405,6 +414,9 @@
 "#ifdef FRAGMENT_SHADER\n"
 "void main\n"
 "(\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"float4 gl_FrontColor : COLOR,\n"
+"#endif\n"
 "float2 TexCoord : TEXCOORD0,\n"
 "float3 EyeVector : TEXCOORD1,\n"
 "float4 ModelViewProjectionPosition : TEXCOORD2,\n"
@@ -421,7 +433,14 @@
 "      float2 ScreenScaleRefractReflectIW = ScreenScaleRefractReflect.xy * (1.0 / ModelViewProjectionPosition.w);\n"
 "      //float2 ScreenTexCoord = (ModelViewProjectionPosition.xy + normalize(tex2D(Texture_Normal, TexCoord).rgb - float3(0.5,0.5,0.5)).xy * DistortScaleRefractReflect.xy * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n"
 "      float2 SafeScreenTexCoord = ModelViewProjectionPosition.xy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect.xy;\n"
-"      float2 ScreenTexCoord = SafeScreenTexCoord + normalize(tex2D(Texture_Normal, TexCoord).rgb - float3(0.5,0.5,0.5)).xy * DistortScaleRefractReflect.xy;\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      float2 distort = DistortScaleRefractReflect.xy * gl_FrontColor.a;\n"
+"      float4 refractcolor = mix(RefractColor, vec4(1.0, 1.0, 1.0, 1.0), gl_FrontColor.a);\n"
+"#else\n"
+"      float2 distort = DistortScaleRefractReflect.xy;\n"
+"      float4 refractcolor = RefractColor;\n"
+"#endif\n"
+"      float2 ScreenTexCoord = SafeScreenTexCoord + normalize(tex2D(Texture_Normal, TexCoord).rgb - float3(0.5,0.5,0.5)).xy * distort;\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"
@@ -432,7 +451,7 @@
 "      f      *= min(1.0, length(tex2D(Texture_Refraction, ScreenTexCoord + float2(-0.01, 0.01)).rgb) / 0.05);\n"
 "      f      *= min(1.0, length(tex2D(Texture_Refraction, ScreenTexCoord + float2(-0.01, -0.01)).rgb) / 0.05);\n"
 "      ScreenTexCoord = lerp(SafeScreenTexCoord, ScreenTexCoord, f);\n"
-"      dp_FragColor = float4(tex2D(Texture_Refraction, ScreenTexCoord).rgb, 1) * RefractColor;\n"
+"      dp_FragColor = float4(tex2D(Texture_Refraction, ScreenTexCoord).rgb, 1) * refractcolor;\n"
 "}\n"
 "#endif\n"
 "#else // !MODE_REFRACTION\n"
@@ -447,18 +466,27 @@
 "(\n"
 "float4 gl_Vertex : POSITION,\n"
 "uniform float4x4 ModelViewProjectionMatrix : register(c8),\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"float4 gl_Color : COLOR0,\n"
+"#endif\n"
 "float4 gl_MultiTexCoord0 : TEXCOORD0,\n"
 "float4 gl_MultiTexCoord1 : TEXCOORD1,\n"
 "float4 gl_MultiTexCoord2 : TEXCOORD2,\n"
 "float4 gl_MultiTexCoord3 : TEXCOORD3,\n"
 "uniform float4x4 TexMatrix : register(c0),\n"
 "uniform float3 EyePosition : register(c24),\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"out float4 gl_FrontColor : COLOR,\n"
+"#endif\n"
 "out float4 gl_Position : POSITION,\n"
 "out float2 TexCoord : TEXCOORD0,\n"
 "out float3 EyeVector : TEXCOORD1,\n"
 "out float4 ModelViewProjectionPosition : TEXCOORD2\n"
 ")\n"
 "{\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      gl_FrontColor = gl_Color;\n"
+"#endif\n"
 "      TexCoord = mul(TexMatrix, gl_MultiTexCoord0).xy;\n"
 "      float3 EyeVectorModelSpace = EyePosition - gl_Vertex.xyz;\n"
 "      EyeVector = float3(dot(EyeVectorModelSpace, gl_MultiTexCoord1.xyz), dot(EyeVectorModelSpace, gl_MultiTexCoord2.xyz), dot(EyeVectorModelSpace, gl_MultiTexCoord3.xyz));\n"
@@ -473,6 +501,9 @@
 "#ifdef FRAGMENT_SHADER\n"
 "void main\n"
 "(\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"float4 gl_FrontColor : COLOR,\n"
+"#endif\n"
 "float2 TexCoord : TEXCOORD0,\n"
 "float3 EyeVector : TEXCOORD1,\n"
 "float4 ModelViewProjectionPosition : TEXCOORD2,\n"
@@ -493,7 +524,18 @@
 "      //float4 ScreenTexCoord = (ModelViewProjectionPosition.xyxy + normalize(tex2D(Texture_Normal, TexCoord).rgb - float3(0.5,0.5,0.5)).xyxy * DistortScaleRefractReflect * 100) * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect;\n"
 "      float4 SafeScreenTexCoord = ModelViewProjectionPosition.xyxy * ScreenScaleRefractReflectIW + ScreenCenterRefractReflect;\n"
 "      //SafeScreenTexCoord = gl_FragCoord.xyxy * float4(1.0 / 1920.0, 1.0 / 1200.0, 1.0 / 1920.0, 1.0 / 1200.0);\n"
-"      float4 ScreenTexCoord = SafeScreenTexCoord + float2(normalize(tex2D(Texture_Normal, TexCoord).rgb - float3(0.5,0.5,0.5)).xy).xyxy * DistortScaleRefractReflect;\n"
+"#ifdef USEALPHAGENVERTEX\n"
+"      float4 distort = DistortScaleRefractReflect * gl_FrontColor.a;\n"
+"      float reflectoffset = ReflectOffset * gl_FrontColor.a;\n"
+"      float reflectfactor = ReflectFactor * gl_FrontColor.a;\n"
+"      float4 refractcolor = mix(RefractColor, vec4(1.0, 1.0, 1.0, 1.0), gl_FrontColor.a);\n"
+"#else\n"
+"      float4 distort = DistortScaleRefractReflect;\n"
+"      float reflectoffset = ReflectOffset;\n"
+"      float reflectfactor = ReflectFactor;\n"
+"      float4 refractcolor = RefractColor;\n"
+"#endif\n"
+"      float4 ScreenTexCoord = SafeScreenTexCoord + float2(normalize(tex2D(Texture_Normal, TexCoord).rgb - float3(0.5,0.5,0.5)).xy).xyxy * distort;\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"
@@ -509,8 +551,8 @@
 "      f *= min(1.0, length(tex2D(Texture_Reflection, ScreenTexCoord.zw + float2(-0.01, 0.01)).rgb) / 0.05);\n"
 "      f *= min(1.0, length(tex2D(Texture_Reflection, ScreenTexCoord.zw + float2(-0.01, -0.01)).rgb) / 0.05);\n"
 "      ScreenTexCoord.zw = lerp(SafeScreenTexCoord.zw, ScreenTexCoord.zw, f);\n"
-"      float Fresnel = pow(min(1.0, 1.0 - float(normalize(EyeVector).z)), 2.0) * ReflectFactor + ReflectOffset;\n"
-"      dp_FragColor = lerp(float4(tex2D(Texture_Refraction, ScreenTexCoord.xy).rgb, 1) * RefractColor, float4(tex2D(Texture_Reflection, ScreenTexCoord.zw).rgb, 1) * ReflectColor, Fresnel);\n"
+"      float Fresnel = pow(min(1.0, 1.0 - float(normalize(EyeVector).z)), 2.0) * reflectfactor + reflectoffset;\n"
+"      dp_FragColor = lerp(float4(tex2D(Texture_Refraction, ScreenTexCoord.xy).rgb, 1) * refractcolor, float4(tex2D(Texture_Reflection, ScreenTexCoord.zw).rgb, 1) * ReflectColor, Fresnel);\n"
 "}\n"
 "#endif\n"
 "#else // !MODE_WATER\n"