Bug#923226: Compiling shader doesn't work - game doesn't work
Julien Puydt
julien.puydt at laposte.net
Mon Feb 25 08:31:51 GMT 2019
Package: openarena
Version: 0.8.8+dfsg-2
Severity: grave
Hi,
openarena doesn't work anymore because it doesn't manage to compile its
shaders.
jpuydt on irc.debian.org
-------------- next part --------------
ioq3 1.36+u20181222.e5da13f~dfsg-1/Debian linux-x86_64 Jan 14 2019
SSE instruction set enabled
----- FS_Startup -----
We are looking in the current search path:
/home/jpuydt/.openarena/baseoa
/usr/lib/openarena/baseoa
/usr/lib/openarena/baseoa/z_oacmp-volume1-v3.pk3 (370 files)
/usr/lib/openarena/baseoa/pak6-patch088.pk3 (711 files)
/usr/lib/openarena/baseoa/pak6-patch085.pk3 (559 files)
/usr/lib/openarena/baseoa/pak6-misc.pk3 (229 files)
/usr/lib/openarena/baseoa/pak5-TA.pk3 (139 files)
/usr/lib/openarena/baseoa/pak4-textures.pk3 (1753 files)
/usr/lib/openarena/baseoa/pak2-players.pk3 (669 files)
/usr/lib/openarena/baseoa/pak2-players-mature.pk3 (231 files)
/usr/lib/openarena/baseoa/pak1-maps.pk3 (100 files)
/usr/lib/openarena/baseoa/pak0.pk3 (1042 files)
----------------------
5803 files in pk3 files
execing default.cfg
couldn't exec q3config.cfg
couldn't exec autoexec.cfg
Hunk_Clear: reset the hunk ok
----- Client Initialization -----
Couldn't read q3history.
----- Initializing Renderer ----
Trying to load "renderer_opengl2_x86_64.so" from "/usr/lib/ioquake3"...
-------------------------------
QKEY found.
----- Client Initialization Complete -----
----- R_Init -----
SDL using driver "x11"
Initializing OpenGL display
Display aspect: 1.600
...setting mode 3: 640 480
Trying to get an OpenGL 3.2 core context
SDL_GL_CreateContext failed: Could not create GL context: GLXBadFBConfig
Reverting to default context
Using 24 color bits, 24 depth, 8 stencil display.
Available modes: '640x400 720x450 840x525 960x600 1280x800 800x512 700x450 680x384 320x180 432x243 480x270 512x288 640x360 720x405 800x450 864x486 960x540 1024x576 1280x720 360x202 684x384 320x240 400x300 512x384 576x432 640x480 700x525 800x600 896x672 928x696 960x720 1024x768 640x512'
GL_RENDERER: Mesa DRI Intel(R) Ironlake Mobile
Initializing OpenGL extensions
...ignoring GL_EXT_texture_compression_s3tc
...ignoring GL_S3_s3tc
...ignoring GL_EXT_texture_filter_anisotropic
...using GL_ARB_framebuffer_object
...using GL_ARB_vertex_array_object
...using GL_ARB_texture_float
...using GL_ARB_depth_clamp
...ignoring GL_ARB_seamless_cube_map
...using GLSL version 1.20
...GL_NVX_gpu_memory_info not found
...GL_ATI_meminfo not found
...ignoring GL_ARB_texture_compression_rgtc
...GL_ARB_texture_compression_bptc not found
...GL_EXT_direct_state_access not found
------- FBO_Init -------
------- GLSL_InitGPUShaders -------
Shader source:
#version 120
#define shadow2D(a,b) shadow2D(a,b).r
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef deformGen_t
#define deformGen_t
#define DGEN_WAVE_SIN 1
#define DGEN_WAVE_SQUARE 2
#define DGEN_WAVE_TRIANGLE 3
#define DGEN_WAVE_SAWTOOTH 4
#define DGEN_WAVE_INVERSE_SAWTOOTH 5
#define DGEN_BULGE 7
#define DGEN_MOVE 8
#endif
#ifndef tcGen_t
#define tcGen_t
#define TCGEN_LIGHTMAP 2
#define TCGEN_TEXTURE 3
#define TCGEN_ENVIRONMENT_MAPPED 4
#define TCGEN_FOG 5
#define TCGEN_VECTOR 6
#endif
#ifndef colorGen_t
#define colorGen_t
#define CGEN_LIGHTING_DIFFUSE 11
#endif
#ifndef alphaGen_t
#define alphaGen_t
#define AGEN_LIGHTING_SPECULAR 6
#define AGEN_PORTAL 8
#endif
#ifndef r_FBufScale
#define r_FBufScale vec2(0.001563, 0.002083)
#endif
#line 0
uniform sampler2D u_DiffuseMap;
#if defined(USE_LIGHTMAP)
uniform sampler2D u_LightMap;
#endif
#if defined(USE_NORMALMAP)
uniform sampler2D u_NormalMap;
#endif
#if defined(USE_DELUXEMAP)
uniform sampler2D u_DeluxeMap;
#endif
#if defined(USE_SPECULARMAP)
uniform sampler2D u_SpecularMap;
#endif
#if defined(USE_SHADOWMAP)
uniform sampler2D u_ShadowMap;
#endif
#if defined(USE_CUBEMAP)
uniform samplerCube u_CubeMap;
#endif
#if defined(USE_NORMALMAP) || defined(USE_DELUXEMAP) || defined(USE_SPECULARMAP) || defined(USE_CUBEMAP)
// y = deluxe, w = cube
uniform vec4 u_EnableTextures;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
uniform vec3 u_PrimaryLightColor;
uniform vec3 u_PrimaryLightAmbient;
#endif
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
uniform vec4 u_NormalScale;
uniform vec4 u_SpecularScale;
#endif
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
#if defined(USE_CUBEMAP)
uniform vec4 u_CubeMapInfo;
#endif
#endif
uniform int u_AlphaTest;
varying vec4 var_TexCoords;
varying vec4 var_Color;
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT))
varying vec4 var_ColorAmbient;
#endif
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT))
varying vec4 var_Normal;
varying vec4 var_Tangent;
varying vec4 var_Bitangent;
#endif
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
varying vec4 var_LightDir;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
varying vec4 var_PrimaryLightDir;
#endif
#define EPSILON 0.00000001
#if defined(USE_PARALLAXMAP)
float SampleDepth(sampler2D normalMap, vec2 t)
{
#if defined(SWIZZLE_NORMALMAP)
return 1.0 - texture2D(normalMap, t).r;
#else
return 1.0 - texture2D(normalMap, t).a;
#endif
}
float RayIntersectDisplaceMap(vec2 dp, vec2 ds, sampler2D normalMap)
{
const int linearSearchSteps = 16;
const int binarySearchSteps = 6;
// current size of search window
float size = 1.0 / float(linearSearchSteps);
// current depth position
float depth = 0.0;
// best match found (starts with last position 1.0)
float bestDepth = 1.0;
// texture depth at best depth
float texDepth = 0.0;
float prevT = SampleDepth(normalMap, dp);
float prevTexDepth = prevT;
// search front to back for first point inside object
for(int i = 0; i < linearSearchSteps - 1; ++i)
{
depth += size;
float t = SampleDepth(normalMap, dp + ds * depth);
if(bestDepth > 0.996) // if no depth found yet
if(depth >= t)
{
bestDepth = depth; // store best depth
texDepth = t;
prevTexDepth = prevT;
}
prevT = t;
}
depth = bestDepth;
#if !defined (USE_RELIEFMAP)
float div = 1.0 / (1.0 + (prevTexDepth - texDepth) * float(linearSearchSteps));
bestDepth -= (depth - size - prevTexDepth) * div;
#else
// recurse around first point (depth) for closest match
for(int i = 0; i < binarySearchSteps; ++i)
{
size *= 0.5;
float t = SampleDepth(normalMap, dp + ds * depth);
if(depth >= t)
{
bestDepth = depth;
depth -= 2.0 * size;
}
depth += size;
}
#endif
return bestDepth;
}
#endif
vec3 CalcDiffuse(vec3 diffuseAlbedo, float NH, float EH, float roughness)
{
#if defined(USE_BURLEY)
// modified from https://disney-animation.s3.amazonaws.com/library/s2012_pbs_disney_brdf_notes_v2.pdf
float fd90 = -0.5 + EH * EH * roughness;
float burley = 1.0 + fd90 * 0.04 / NH;
burley *= burley;
return diffuseAlbedo * burley;
#else
return diffuseAlbedo;
#endif
}
vec3 EnvironmentBRDF(float roughness, float NE, vec3 specular)
{
// from http://community.arm.com/servlet/JiveServlet/download/96891546-19496/siggraph2015-mmg-renaldas-slides.pdf
float v = 1.0 - max(roughness, NE);
v *= v * v;
return vec3(v) + specular;
}
vec3 CalcSpecular(vec3 specular, float NH, float EH, float roughness)
{
// from http://community.arm.com/servlet/JiveServlet/download/96891546-19496/siggraph2015-mmg-renaldas-slides.pdf
float rr = roughness*roughness;
float rrrr = rr*rr;
float d = (NH * NH) * (rrrr - 1.0) + 1.0;
float v = (EH * EH) * (roughness + 0.5);
return specular * (rrrr / (4.0 * d * d * v));
}
float CalcLightAttenuation(float point, float normDist)
{
// zero light at 1.0, approximating q3 style
// also don't attenuate directional light
float attenuation = (0.5 * normDist - 1.5) * point + 1.0;
// clamp attenuation
#if defined(NO_LIGHT_CLAMP)
attenuation = max(attenuation, 0.0);
#else
attenuation = clamp(attenuation, 0.0, 1.0);
#endif
return attenuation;
}
vec4 hitCube(vec3 ray, vec3 pos, vec3 invSize, float lod, samplerCube tex)
{
// find any hits on cubemap faces facing the camera
vec3 scale = (sign(ray) - pos) / ray;
// find the nearest hit
float minScale = min(min(scale.x, scale.y), scale.z);
// if the nearest hit is behind the camera, ignore
// should not be necessary as long as pos is inside the cube
//if (minScale < 0.0)
//return vec4(0.0);
// calculate the hit position, that's our texture coordinates
vec3 tc = pos + ray * minScale;
// if the texture coordinates are outside the cube, ignore
// necessary since we're not fading out outside the cube
if (any(greaterThan(abs(tc), vec3(1.00001))))
return vec4(0.0);
// fade out when approaching the cubemap edges
//vec3 fade3 = abs(pos);
//float fade = max(max(fade3.x, fade3.y), fade3.z);
//fade = clamp(1.0 - fade, 0.0, 1.0);
//return vec4(textureCubeLod(tex, tc, lod).rgb * fade, fade);
return vec4(textureCubeLod(tex, tc, lod).rgb, 1.0);
}
void main()
{
vec3 viewDir, lightColor, ambientColor, reflectance;
vec3 L, N, E, H;
float NL, NH, NE, EH, attenuation;
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
mat3 tangentToWorld = mat3(var_Tangent.xyz, var_Bitangent.xyz, var_Normal.xyz);
viewDir = vec3(var_Normal.w, var_Tangent.w, var_Bitangent.w);
E = normalize(viewDir);
#endif
lightColor = var_Color.rgb;
#if defined(USE_LIGHTMAP)
vec4 lightmapColor = texture2D(u_LightMap, var_TexCoords.zw);
#if defined(RGBM_LIGHTMAP)
lightmapColor.rgb *= lightmapColor.a;
#endif
#if defined(USE_PBR) && !defined(USE_FAST_LIGHT)
lightmapColor.rgb *= lightmapColor.rgb;
#endif
lightColor *= lightmapColor.rgb;
#endif
vec2 texCoords = var_TexCoords.xy;
#if defined(USE_PARALLAXMAP)
vec3 offsetDir = viewDir * tangentToWorld;
offsetDir.xy *= -u_NormalScale.a / offsetDir.z;
texCoords += offsetDir.xy * RayIntersectDisplaceMap(texCoords, offsetDir.xy, u_NormalMap);
#endif
vec4 diffuse = texture2D(u_DiffuseMap, texCoords);
float alpha = diffuse.a * var_Color.a;
if (u_AlphaTest == 1)
{
if (alpha == 0.0)
discard;
}
else if (u_AlphaTest == 2)
{
if (alpha >= 0.5)
discard;
}
else if (u_AlphaTest == 3)
{
if (alpha < 0.5)
discard;
}
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
L = var_LightDir.xyz;
#if defined(USE_DELUXEMAP)
L += (texture2D(u_DeluxeMap, var_TexCoords.zw).xyz - vec3(0.5)) * u_EnableTextures.y;
#endif
float sqrLightDist = dot(L, L);
L /= sqrt(sqrLightDist);
#if defined(USE_LIGHT_VECTOR)
attenuation = CalcLightAttenuation(float(var_LightDir.w > 0.0), var_LightDir.w / sqrLightDist);
#else
attenuation = 1.0;
#endif
#if defined(USE_NORMALMAP)
#if defined(SWIZZLE_NORMALMAP)
N.xy = texture2D(u_NormalMap, texCoords).ag - vec2(0.5);
#else
N.xy = texture2D(u_NormalMap, texCoords).rg - vec2(0.5);
#endif
N.xy *= u_NormalScale.xy;
N.z = sqrt(clamp((0.25 - N.x * N.x) - N.y * N.y, 0.0, 1.0));
N = tangentToWorld * N;
#else
N = var_Normal.xyz;
#endif
N = normalize(N);
#if defined(USE_SHADOWMAP)
vec2 shadowTex = gl_FragCoord.xy * r_FBufScale;
float shadowValue = texture2D(u_ShadowMap, shadowTex).r;
// surfaces not facing the light are always shadowed
shadowValue *= clamp(dot(N, var_PrimaryLightDir.xyz), 0.0, 1.0);
#if defined(SHADOWMAP_MODULATE)
lightColor *= shadowValue * (1.0 - u_PrimaryLightAmbient.r) + u_PrimaryLightAmbient.r;
#endif
#endif
#if !defined(USE_LIGHT_VECTOR)
ambientColor = lightColor;
float surfNL = clamp(dot(var_Normal.xyz, L), 0.0, 1.0);
// reserve 25% ambient to avoid black areas on normalmaps
lightColor *= 0.75;
// Scale the incoming light to compensate for the baked-in light angle
// attenuation.
lightColor /= max(surfNL, 0.25);
// Recover any unused light as ambient, in case attenuation is over 4x or
// light is below the surface
ambientColor = max(ambientColor - lightColor * surfNL, vec3(0.0));
#else
ambientColor = var_ColorAmbient.rgb;
#endif
NL = clamp(dot(N, L), 0.0, 1.0);
NE = clamp(dot(N, E), 0.0, 1.0);
H = normalize(L + E);
EH = clamp(dot(E, H), 0.0, 1.0);
NH = clamp(dot(N, H), 0.0, 1.0);
#if defined(USE_SPECULARMAP)
vec4 specular = texture2D(u_SpecularMap, texCoords);
#else
vec4 specular = vec4(1.0);
#endif
specular *= u_SpecularScale;
#if defined(USE_PBR)
diffuse.rgb *= diffuse.rgb;
#endif
#if defined(USE_PBR)
// diffuse rgb is base color
// specular red is gloss
// specular green is metallicness
float gloss = specular.r;
float metal = specular.g;
specular.rgb = metal * diffuse.rgb + vec3(0.04 - 0.04 * metal);
diffuse.rgb *= 1.0 - metal;
#else
// diffuse rgb is diffuse
// specular rgb is specular reflectance at normal incidence
// specular alpha is gloss
float gloss = specular.a;
// adjust diffuse by specular reflectance, to maintain energy conservation
diffuse.rgb *= vec3(1.0) - specular.rgb;
#endif
#if defined(GLOSS_IS_GLOSS)
float roughness = exp2(-3.0 * gloss);
#elif defined(GLOSS_IS_SMOOTHNESS)
float roughness = 1.0 - gloss;
#elif defined(GLOSS_IS_ROUGHNESS)
float roughness = gloss;
#elif defined(GLOSS_IS_SHININESS)
float roughness = pow(2.0 / (8190.0 * gloss + 2.0), 0.25);
#endif
reflectance = CalcDiffuse(diffuse.rgb, NH, EH, roughness);
#if defined(r_deluxeSpecular)
#if defined(USE_LIGHT_VECTOR)
reflectance += CalcSpecular(specular.rgb, NH, EH, roughness) * r_deluxeSpecular;
#else
reflectance += CalcSpecular(specular.rgb, NH, EH, pow(roughness, r_deluxeSpecular));
#endif
#endif
gl_FragColor.rgb = lightColor * reflectance * (attenuation * NL);
gl_FragColor.rgb += ambientColor * diffuse.rgb;
#if defined(USE_CUBEMAP)
reflectance = EnvironmentBRDF(roughness, NE, specular.rgb);
vec3 R = reflect(E, N);
// parallax corrected cubemap (cheaper trick)
// from http://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/
vec3 parallax = u_CubeMapInfo.xyz + u_CubeMapInfo.w * viewDir;
#if defined(USE_BOX_CUBEMAP_PARALLAX)
vec3 cubeLightColor = hitCube(R * u_CubeMapInfo.w, parallax, u_CubeMapInfo.www, ROUGHNESS_MIPS * roughness, u_CubeMap).rgb * u_EnableTextures.w;
#else
vec3 cubeLightColor = textureCubeLod(u_CubeMap, R + parallax, ROUGHNESS_MIPS * roughness).rgb * u_EnableTextures.w;
#endif
// normalize cubemap based on last roughness mip (~diffuse)
// multiplying cubemap values by lighting below depends on either this or the cubemap being normalized at generation
//vec3 cubeLightDiffuse = max(textureCubeLod(u_CubeMap, N, ROUGHNESS_MIPS).rgb, 0.5 / 255.0);
//cubeLightColor /= dot(cubeLightDiffuse, vec3(0.2125, 0.7154, 0.0721));
#if defined(USE_PBR)
cubeLightColor *= cubeLightColor;
#endif
// multiply cubemap values by lighting
// not technically correct, but helps make reflections look less unnatural
//cubeLightColor *= lightColor * (attenuation * NL) + ambientColor;
gl_FragColor.rgb += cubeLightColor * reflectance;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(SHADOWMAP_MODULATE)
vec3 L2, H2;
float NL2, EH2, NH2;
L2 = var_PrimaryLightDir.xyz;
// enable when point lights are supported as primary lights
//sqrLightDist = dot(L2, L2);
//L2 /= sqrt(sqrLightDist);
NL2 = clamp(dot(N, L2), 0.0, 1.0);
H2 = normalize(L2 + E);
EH2 = clamp(dot(E, H2), 0.0, 1.0);
NH2 = clamp(dot(N, H2), 0.0, 1.0);
reflectance = CalcSpecular(specular.rgb, NH2, EH2, roughness);
// bit of a hack, with modulated shadowmaps, ignore diffuse
#if !defined(SHADOWMAP_MODULATE)
reflectance += CalcDiffuse(diffuse.rgb, NH2, EH2, roughness);
#endif
lightColor = u_PrimaryLightColor;
#if defined(USE_SHADOWMAP)
lightColor *= shadowValue;
#endif
// enable when point lights are supported as primary lights
//lightColor *= CalcLightAttenuation(float(u_PrimaryLightDir.w > 0.0), u_PrimaryLightDir.w / sqrLightDist);
gl_FragColor.rgb += lightColor * reflectance * NL2;
#endif
#if defined(USE_PBR)
gl_FragColor.rgb = sqrt(gl_FragColor.rgb);
#endif
#else
gl_FragColor.rgb = diffuse.rgb * lightColor;
#endif
gl_FragColor.a = alpha;
}
Shader info log:
0:224(14): error: no matching function for call to `textureCubeLod(samplerCube, vec3, float)'; candidates are:
0:224(14): error: type mismatch
0:224(9): error: cannot construct `vec4' from a non-numeric data type
0:224(2): error: `return' with wrong type error, in function `hitCube' returning vec4
********************
ERROR: Couldn't compile shader
********************
RE_Shutdown( 0 )
Hunk_Clear: reset the hunk ok
----- R_Init -----
------- FBO_Init -------
------- GLSL_InitGPUShaders -------
Shader source:
#version 120
#define shadow2D(a,b) shadow2D(a,b).r
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef deformGen_t
#define deformGen_t
#define DGEN_WAVE_SIN 1
#define DGEN_WAVE_SQUARE 2
#define DGEN_WAVE_TRIANGLE 3
#define DGEN_WAVE_SAWTOOTH 4
#define DGEN_WAVE_INVERSE_SAWTOOTH 5
#define DGEN_BULGE 7
#define DGEN_MOVE 8
#endif
#ifndef tcGen_t
#define tcGen_t
#define TCGEN_LIGHTMAP 2
#define TCGEN_TEXTURE 3
#define TCGEN_ENVIRONMENT_MAPPED 4
#define TCGEN_FOG 5
#define TCGEN_VECTOR 6
#endif
#ifndef colorGen_t
#define colorGen_t
#define CGEN_LIGHTING_DIFFUSE 11
#endif
#ifndef alphaGen_t
#define alphaGen_t
#define AGEN_LIGHTING_SPECULAR 6
#define AGEN_PORTAL 8
#endif
#ifndef r_FBufScale
#define r_FBufScale vec2(0.001563, 0.002083)
#endif
#line 0
uniform sampler2D u_DiffuseMap;
#if defined(USE_LIGHTMAP)
uniform sampler2D u_LightMap;
#endif
#if defined(USE_NORMALMAP)
uniform sampler2D u_NormalMap;
#endif
#if defined(USE_DELUXEMAP)
uniform sampler2D u_DeluxeMap;
#endif
#if defined(USE_SPECULARMAP)
uniform sampler2D u_SpecularMap;
#endif
#if defined(USE_SHADOWMAP)
uniform sampler2D u_ShadowMap;
#endif
#if defined(USE_CUBEMAP)
uniform samplerCube u_CubeMap;
#endif
#if defined(USE_NORMALMAP) || defined(USE_DELUXEMAP) || defined(USE_SPECULARMAP) || defined(USE_CUBEMAP)
// y = deluxe, w = cube
uniform vec4 u_EnableTextures;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
uniform vec3 u_PrimaryLightColor;
uniform vec3 u_PrimaryLightAmbient;
#endif
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
uniform vec4 u_NormalScale;
uniform vec4 u_SpecularScale;
#endif
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
#if defined(USE_CUBEMAP)
uniform vec4 u_CubeMapInfo;
#endif
#endif
uniform int u_AlphaTest;
varying vec4 var_TexCoords;
varying vec4 var_Color;
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT))
varying vec4 var_ColorAmbient;
#endif
#if (defined(USE_LIGHT) && !defined(USE_FAST_LIGHT))
varying vec4 var_Normal;
varying vec4 var_Tangent;
varying vec4 var_Bitangent;
#endif
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
varying vec4 var_LightDir;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(USE_SHADOWMAP)
varying vec4 var_PrimaryLightDir;
#endif
#define EPSILON 0.00000001
#if defined(USE_PARALLAXMAP)
float SampleDepth(sampler2D normalMap, vec2 t)
{
#if defined(SWIZZLE_NORMALMAP)
return 1.0 - texture2D(normalMap, t).r;
#else
return 1.0 - texture2D(normalMap, t).a;
#endif
}
float RayIntersectDisplaceMap(vec2 dp, vec2 ds, sampler2D normalMap)
{
const int linearSearchSteps = 16;
const int binarySearchSteps = 6;
// current size of search window
float size = 1.0 / float(linearSearchSteps);
// current depth position
float depth = 0.0;
// best match found (starts with last position 1.0)
float bestDepth = 1.0;
// texture depth at best depth
float texDepth = 0.0;
float prevT = SampleDepth(normalMap, dp);
float prevTexDepth = prevT;
// search front to back for first point inside object
for(int i = 0; i < linearSearchSteps - 1; ++i)
{
depth += size;
float t = SampleDepth(normalMap, dp + ds * depth);
if(bestDepth > 0.996) // if no depth found yet
if(depth >= t)
{
bestDepth = depth; // store best depth
texDepth = t;
prevTexDepth = prevT;
}
prevT = t;
}
depth = bestDepth;
#if !defined (USE_RELIEFMAP)
float div = 1.0 / (1.0 + (prevTexDepth - texDepth) * float(linearSearchSteps));
bestDepth -= (depth - size - prevTexDepth) * div;
#else
// recurse around first point (depth) for closest match
for(int i = 0; i < binarySearchSteps; ++i)
{
size *= 0.5;
float t = SampleDepth(normalMap, dp + ds * depth);
if(depth >= t)
{
bestDepth = depth;
depth -= 2.0 * size;
}
depth += size;
}
#endif
return bestDepth;
}
#endif
vec3 CalcDiffuse(vec3 diffuseAlbedo, float NH, float EH, float roughness)
{
#if defined(USE_BURLEY)
// modified from https://disney-animation.s3.amazonaws.com/library/s2012_pbs_disney_brdf_notes_v2.pdf
float fd90 = -0.5 + EH * EH * roughness;
float burley = 1.0 + fd90 * 0.04 / NH;
burley *= burley;
return diffuseAlbedo * burley;
#else
return diffuseAlbedo;
#endif
}
vec3 EnvironmentBRDF(float roughness, float NE, vec3 specular)
{
// from http://community.arm.com/servlet/JiveServlet/download/96891546-19496/siggraph2015-mmg-renaldas-slides.pdf
float v = 1.0 - max(roughness, NE);
v *= v * v;
return vec3(v) + specular;
}
vec3 CalcSpecular(vec3 specular, float NH, float EH, float roughness)
{
// from http://community.arm.com/servlet/JiveServlet/download/96891546-19496/siggraph2015-mmg-renaldas-slides.pdf
float rr = roughness*roughness;
float rrrr = rr*rr;
float d = (NH * NH) * (rrrr - 1.0) + 1.0;
float v = (EH * EH) * (roughness + 0.5);
return specular * (rrrr / (4.0 * d * d * v));
}
float CalcLightAttenuation(float point, float normDist)
{
// zero light at 1.0, approximating q3 style
// also don't attenuate directional light
float attenuation = (0.5 * normDist - 1.5) * point + 1.0;
// clamp attenuation
#if defined(NO_LIGHT_CLAMP)
attenuation = max(attenuation, 0.0);
#else
attenuation = clamp(attenuation, 0.0, 1.0);
#endif
return attenuation;
}
vec4 hitCube(vec3 ray, vec3 pos, vec3 invSize, float lod, samplerCube tex)
{
// find any hits on cubemap faces facing the camera
vec3 scale = (sign(ray) - pos) / ray;
// find the nearest hit
float minScale = min(min(scale.x, scale.y), scale.z);
// if the nearest hit is behind the camera, ignore
// should not be necessary as long as pos is inside the cube
//if (minScale < 0.0)
//return vec4(0.0);
// calculate the hit position, that's our texture coordinates
vec3 tc = pos + ray * minScale;
// if the texture coordinates are outside the cube, ignore
// necessary since we're not fading out outside the cube
if (any(greaterThan(abs(tc), vec3(1.00001))))
return vec4(0.0);
// fade out when approaching the cubemap edges
//vec3 fade3 = abs(pos);
//float fade = max(max(fade3.x, fade3.y), fade3.z);
//fade = clamp(1.0 - fade, 0.0, 1.0);
//return vec4(textureCubeLod(tex, tc, lod).rgb * fade, fade);
return vec4(textureCubeLod(tex, tc, lod).rgb, 1.0);
}
void main()
{
vec3 viewDir, lightColor, ambientColor, reflectance;
vec3 L, N, E, H;
float NL, NH, NE, EH, attenuation;
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
mat3 tangentToWorld = mat3(var_Tangent.xyz, var_Bitangent.xyz, var_Normal.xyz);
viewDir = vec3(var_Normal.w, var_Tangent.w, var_Bitangent.w);
E = normalize(viewDir);
#endif
lightColor = var_Color.rgb;
#if defined(USE_LIGHTMAP)
vec4 lightmapColor = texture2D(u_LightMap, var_TexCoords.zw);
#if defined(RGBM_LIGHTMAP)
lightmapColor.rgb *= lightmapColor.a;
#endif
#if defined(USE_PBR) && !defined(USE_FAST_LIGHT)
lightmapColor.rgb *= lightmapColor.rgb;
#endif
lightColor *= lightmapColor.rgb;
#endif
vec2 texCoords = var_TexCoords.xy;
#if defined(USE_PARALLAXMAP)
vec3 offsetDir = viewDir * tangentToWorld;
offsetDir.xy *= -u_NormalScale.a / offsetDir.z;
texCoords += offsetDir.xy * RayIntersectDisplaceMap(texCoords, offsetDir.xy, u_NormalMap);
#endif
vec4 diffuse = texture2D(u_DiffuseMap, texCoords);
float alpha = diffuse.a * var_Color.a;
if (u_AlphaTest == 1)
{
if (alpha == 0.0)
discard;
}
else if (u_AlphaTest == 2)
{
if (alpha >= 0.5)
discard;
}
else if (u_AlphaTest == 3)
{
if (alpha < 0.5)
discard;
}
#if defined(USE_LIGHT) && !defined(USE_FAST_LIGHT)
L = var_LightDir.xyz;
#if defined(USE_DELUXEMAP)
L += (texture2D(u_DeluxeMap, var_TexCoords.zw).xyz - vec3(0.5)) * u_EnableTextures.y;
#endif
float sqrLightDist = dot(L, L);
L /= sqrt(sqrLightDist);
#if defined(USE_LIGHT_VECTOR)
attenuation = CalcLightAttenuation(float(var_LightDir.w > 0.0), var_LightDir.w / sqrLightDist);
#else
attenuation = 1.0;
#endif
#if defined(USE_NORMALMAP)
#if defined(SWIZZLE_NORMALMAP)
N.xy = texture2D(u_NormalMap, texCoords).ag - vec2(0.5);
#else
N.xy = texture2D(u_NormalMap, texCoords).rg - vec2(0.5);
#endif
N.xy *= u_NormalScale.xy;
N.z = sqrt(clamp((0.25 - N.x * N.x) - N.y * N.y, 0.0, 1.0));
N = tangentToWorld * N;
#else
N = var_Normal.xyz;
#endif
N = normalize(N);
#if defined(USE_SHADOWMAP)
vec2 shadowTex = gl_FragCoord.xy * r_FBufScale;
float shadowValue = texture2D(u_ShadowMap, shadowTex).r;
// surfaces not facing the light are always shadowed
shadowValue *= clamp(dot(N, var_PrimaryLightDir.xyz), 0.0, 1.0);
#if defined(SHADOWMAP_MODULATE)
lightColor *= shadowValue * (1.0 - u_PrimaryLightAmbient.r) + u_PrimaryLightAmbient.r;
#endif
#endif
#if !defined(USE_LIGHT_VECTOR)
ambientColor = lightColor;
float surfNL = clamp(dot(var_Normal.xyz, L), 0.0, 1.0);
// reserve 25% ambient to avoid black areas on normalmaps
lightColor *= 0.75;
// Scale the incoming light to compensate for the baked-in light angle
// attenuation.
lightColor /= max(surfNL, 0.25);
// Recover any unused light as ambient, in case attenuation is over 4x or
// light is below the surface
ambientColor = max(ambientColor - lightColor * surfNL, vec3(0.0));
#else
ambientColor = var_ColorAmbient.rgb;
#endif
NL = clamp(dot(N, L), 0.0, 1.0);
NE = clamp(dot(N, E), 0.0, 1.0);
H = normalize(L + E);
EH = clamp(dot(E, H), 0.0, 1.0);
NH = clamp(dot(N, H), 0.0, 1.0);
#if defined(USE_SPECULARMAP)
vec4 specular = texture2D(u_SpecularMap, texCoords);
#else
vec4 specular = vec4(1.0);
#endif
specular *= u_SpecularScale;
#if defined(USE_PBR)
diffuse.rgb *= diffuse.rgb;
#endif
#if defined(USE_PBR)
// diffuse rgb is base color
// specular red is gloss
// specular green is metallicness
float gloss = specular.r;
float metal = specular.g;
specular.rgb = metal * diffuse.rgb + vec3(0.04 - 0.04 * metal);
diffuse.rgb *= 1.0 - metal;
#else
// diffuse rgb is diffuse
// specular rgb is specular reflectance at normal incidence
// specular alpha is gloss
float gloss = specular.a;
// adjust diffuse by specular reflectance, to maintain energy conservation
diffuse.rgb *= vec3(1.0) - specular.rgb;
#endif
#if defined(GLOSS_IS_GLOSS)
float roughness = exp2(-3.0 * gloss);
#elif defined(GLOSS_IS_SMOOTHNESS)
float roughness = 1.0 - gloss;
#elif defined(GLOSS_IS_ROUGHNESS)
float roughness = gloss;
#elif defined(GLOSS_IS_SHININESS)
float roughness = pow(2.0 / (8190.0 * gloss + 2.0), 0.25);
#endif
reflectance = CalcDiffuse(diffuse.rgb, NH, EH, roughness);
#if defined(r_deluxeSpecular)
#if defined(USE_LIGHT_VECTOR)
reflectance += CalcSpecular(specular.rgb, NH, EH, roughness) * r_deluxeSpecular;
#else
reflectance += CalcSpecular(specular.rgb, NH, EH, pow(roughness, r_deluxeSpecular));
#endif
#endif
gl_FragColor.rgb = lightColor * reflectance * (attenuation * NL);
gl_FragColor.rgb += ambientColor * diffuse.rgb;
#if defined(USE_CUBEMAP)
reflectance = EnvironmentBRDF(roughness, NE, specular.rgb);
vec3 R = reflect(E, N);
// parallax corrected cubemap (cheaper trick)
// from http://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/
vec3 parallax = u_CubeMapInfo.xyz + u_CubeMapInfo.w * viewDir;
#if defined(USE_BOX_CUBEMAP_PARALLAX)
vec3 cubeLightColor = hitCube(R * u_CubeMapInfo.w, parallax, u_CubeMapInfo.www, ROUGHNESS_MIPS * roughness, u_CubeMap).rgb * u_EnableTextures.w;
#else
vec3 cubeLightColor = textureCubeLod(u_CubeMap, R + parallax, ROUGHNESS_MIPS * roughness).rgb * u_EnableTextures.w;
#endif
// normalize cubemap based on last roughness mip (~diffuse)
// multiplying cubemap values by lighting below depends on either this or the cubemap being normalized at generation
//vec3 cubeLightDiffuse = max(textureCubeLod(u_CubeMap, N, ROUGHNESS_MIPS).rgb, 0.5 / 255.0);
//cubeLightColor /= dot(cubeLightDiffuse, vec3(0.2125, 0.7154, 0.0721));
#if defined(USE_PBR)
cubeLightColor *= cubeLightColor;
#endif
// multiply cubemap values by lighting
// not technically correct, but helps make reflections look less unnatural
//cubeLightColor *= lightColor * (attenuation * NL) + ambientColor;
gl_FragColor.rgb += cubeLightColor * reflectance;
#endif
#if defined(USE_PRIMARY_LIGHT) || defined(SHADOWMAP_MODULATE)
vec3 L2, H2;
float NL2, EH2, NH2;
L2 = var_PrimaryLightDir.xyz;
// enable when point lights are supported as primary lights
//sqrLightDist = dot(L2, L2);
//L2 /= sqrt(sqrLightDist);
NL2 = clamp(dot(N, L2), 0.0, 1.0);
H2 = normalize(L2 + E);
EH2 = clamp(dot(E, H2), 0.0, 1.0);
NH2 = clamp(dot(N, H2), 0.0, 1.0);
reflectance = CalcSpecular(specular.rgb, NH2, EH2, roughness);
// bit of a hack, with modulated shadowmaps, ignore diffuse
#if !defined(SHADOWMAP_MODULATE)
reflectance += CalcDiffuse(diffuse.rgb, NH2, EH2, roughness);
#endif
lightColor = u_PrimaryLightColor;
#if defined(USE_SHADOWMAP)
lightColor *= shadowValue;
#endif
// enable when point lights are supported as primary lights
//lightColor *= CalcLightAttenuation(float(u_PrimaryLightDir.w > 0.0), u_PrimaryLightDir.w / sqrLightDist);
gl_FragColor.rgb += lightColor * reflectance * NL2;
#endif
#if defined(USE_PBR)
gl_FragColor.rgb = sqrt(gl_FragColor.rgb);
#endif
#else
gl_FragColor.rgb = diffuse.rgb * lightColor;
#endif
gl_FragColor.a = alpha;
}
Shader info log:
0:224(14): error: no matching function for call to `textureCubeLod(samplerCube, vec3, float)'; candidates are:
0:224(14): error: type mismatch
0:224(9): error: cannot construct `vec4' from a non-numeric data type
0:224(2): error: `return' with wrong type error, in function `hitCube' returning vec4
recursive error after: Couldn't compile shader
More information about the Pkg-games-devel
mailing list