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fteqw/engine/shaders/glsl/rtlight.glsl
Spoike 0f7bbfcf0e Implement an area grid, primarily to avoid mods(read: xonotic) generating 2000 ents all sitting on the root area node. 
Add separate cl_movement cvar to enable/disable reporting input sequences to DP servers (which use different pathways). Does not affect other protocols. This is separate from cl_nopred but will usually have the same result in the long run.
Fixed movevalues for DPP7 clients, if they try using prediction they should now (mostly) get the same values that DP normally uses for QW servers.
Reworked sky overrides somewhat. Now uses skyboxes where possible.
Fixed dpcompat_makeshitup a little, for better compat.
Fixed echo $foo$bar not exanding bar.
Try to fix the meanings of vid_hardwaregamma.
Fixes for builtins/features/etc that apparently only xonotic uses.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5143 fc73d0e0-1445-4013-8a0c-d673dee63da5
2017-08-29 02:29:06 +00:00

312 lines
7.9 KiB
GLSL
Raw Blame History

!!ver 100 150
!!permu TESS
!!permu BUMP
!!permu FRAMEBLEND
!!permu SKELETAL
!!permu UPPERLOWER
!!permu FOG
!!permu REFLECTCUBEMASK
!!cvarf r_glsl_offsetmapping_scale
!!cvardf r_glsl_pcf
!!cvardf r_tessellation_level=5
!!samps shadowmap diffuse normalmap specular upper lower reflectcube reflectmask
#include "sys/defs.h"
//this is the main shader responsible for realtime dlights.
//texture units:
//s0=diffuse, s1=normal, s2=specular, s3=shadowmap
//custom modifiers:
//PCF(shadowmap)
//CUBEPROJ(projected cubemap)
//SPOT(projected circle
//CUBESHADOW
#if 0 && defined(GL_ARB_texture_gather) && defined(PCF)
#extension GL_ARB_texture_gather : enable
#endif
#ifdef UPPERLOWER
#define UPPER
#define LOWER
#endif
//if there's no vertex normals known, disable some stuff.
//FIXME: this results in dupe permutations.
#ifdef NOBUMP
#undef SPECULAR
#undef BUMP
#undef OFFSETMAPPING
#endif
#if !defined(TESS_CONTROL_SHADER)
varying vec2 tcbase;
varying vec3 lightvector;
#if defined(VERTEXCOLOURS)
varying vec4 vc;
#endif
#if defined(SPECULAR) || defined(OFFSETMAPPING) || defined(REFLECTCUBEMASK)
varying vec3 eyevector;
#endif
#ifdef REFLECTCUBEMASK
varying mat3 invsurface;
#endif
#if defined(PCF) || defined(CUBE) || defined(SPOT)
varying vec4 vtexprojcoord;
#endif
#endif
#ifdef VERTEX_SHADER
#ifdef TESS
varying vec3 vertex, normal;
#endif
#include "sys/skeletal.h"
void main ()
{
vec3 n, s, t, w;
gl_Position = skeletaltransform_wnst(w,n,s,t);
tcbase = v_texcoord; //pass the texture coords straight through
vec3 lightminusvertex = l_lightposition - w.xyz;
#ifdef NOBUMP
//the only important thing is distance
lightvector = lightminusvertex;
#else
//the light direction relative to the surface normal, for bumpmapping.
lightvector.x = dot(lightminusvertex, s.xyz);
lightvector.y = dot(lightminusvertex, t.xyz);
lightvector.z = dot(lightminusvertex, n.xyz);
#endif
#if defined(VERTEXCOLOURS)
vc = v_colour;
#endif
#if defined(SPECULAR)||defined(OFFSETMAPPING) || defined(REFLECTCUBEMASK)
vec3 eyeminusvertex = e_eyepos - w.xyz;
eyevector.x = dot(eyeminusvertex, s.xyz);
eyevector.y = dot(eyeminusvertex, t.xyz);
eyevector.z = dot(eyeminusvertex, n.xyz);
#endif
#ifdef REFLECTCUBEMASK
invsurface[0] = v_svector;
invsurface[1] = v_tvector;
invsurface[2] = v_normal;
#endif
#if defined(PCF) || defined(SPOT) || defined(CUBE)
//for texture projections/shadowmapping on dlights
vtexprojcoord = (l_cubematrix*vec4(w.xyz, 1.0));
#endif
#ifdef TESS
vertex = w;
normal = n;
#endif
}
#endif
#if defined(TESS_CONTROL_SHADER)
layout(vertices = 3) out;
in vec3 vertex[];
out vec3 t_vertex[];
in vec3 normal[];
out vec3 t_normal[];
in vec2 tcbase[];
out vec2 t_tcbase[];
in vec3 lightvector[];
out vec3 t_lightvector[];
#if defined(VERTEXCOLOURS)
in vec4 vc[];
out vec4 t_vc[];
#endif
#if defined(SPECULAR) || defined(OFFSETMAPPING) || defined(REFLECTCUBEMASK)
in vec3 eyevector[];
out vec3 t_eyevector[];
#endif
void main()
{
//the control shader needs to pass stuff through
#define id gl_InvocationID
t_vertex[id] = vertex[id];
t_normal[id] = normal[id];
t_tcbase[id] = tcbase[id];
t_lightvector[id] = lightvector[id];
#if defined(VERTEXCOLOURS)
t_vc[id] = vc[id];
#endif
#if defined(SPECULAR) || defined(OFFSETMAPPING) || defined(REFLECTCUBEMASK)
t_eyevector[id] = eyevector[id];
#endif
gl_TessLevelOuter[0] = float(r_tessellation_level);
gl_TessLevelOuter[1] = float(r_tessellation_level);
gl_TessLevelOuter[2] = float(r_tessellation_level);
gl_TessLevelInner[0] = float(r_tessellation_level);
}
#endif
#if defined(TESS_EVALUATION_SHADER)
layout(triangles) in;
in vec3 t_vertex[];
in vec3 t_normal[];
in vec2 t_tcbase[];
in vec3 t_lightvector[];
#if defined(VERTEXCOLOURS)
in vec4 t_vc[];
#endif
#if defined(SPECULAR) || defined(OFFSETMAPPING) || defined(REFLECTCUBEMASK)
in vec3 t_eyevector[];
#endif
#define LERP(a) (gl_TessCoord.x*a[0] + gl_TessCoord.y*a[1] + gl_TessCoord.z*a[2])
void main()
{
#define factor 1.0
tcbase = LERP(t_tcbase);
vec3 w = LERP(t_vertex);
vec3 t0 = w - dot(w-t_vertex[0],t_normal[0])*t_normal[0];
vec3 t1 = w - dot(w-t_vertex[1],t_normal[1])*t_normal[1];
vec3 t2 = w - dot(w-t_vertex[2],t_normal[2])*t_normal[2];
w = w*(1.0-factor) + factor*(gl_TessCoord.x*t0+gl_TessCoord.y*t1+gl_TessCoord.z*t2);
#if defined(PCF) || defined(SPOT) || defined(CUBE)
//for texture projections/shadowmapping on dlights
vtexprojcoord = (l_cubematrix*vec4(w.xyz, 1.0));
#endif
//FIXME: we should be recalcing these here, instead of just lerping them
lightvector = LERP(t_lightvector);
#if defined(VERTEXCOLOURS)
vc = LERP(t_vc);
#endif
#if defined(SPECULAR) || defined(OFFSETMAPPING) || defined(REFLECTCUBEMASK)
eyevector = LERP(t_eyevector);
#endif
gl_Position = m_modelviewprojection * vec4(w,1.0);
}
#endif
#ifdef FRAGMENT_SHADER
#include "sys/fog.h"
#include "sys/pcf.h"
#ifdef OFFSETMAPPING
#include "sys/offsetmapping.h"
#endif
void main ()
{
float colorscale = max(1.0 - (dot(lightvector, lightvector)/(l_lightradius*l_lightradius)), 0.0);
#ifdef PCF
/*filter the light by the shadowmap. logically a boolean, but we allow fractions for softer shadows*/
colorscale *= ShadowmapFilter(s_shadowmap);
#endif
#if defined(SPOT)
/*filter the colour by the spotlight. discard anything behind the light so we don't get a mirror image*/
if (vtexprojcoord.w < 0.0) discard;
vec2 spot = ((vtexprojcoord.st)/vtexprojcoord.w);
colorscale*=1.0-(dot(spot,spot));
#endif
//read raw texture samples (offsetmapping munges the tex coords first)
#ifdef OFFSETMAPPING
vec2 tcoffsetmap = offsetmap(s_normalmap, tcbase, eyevector);
#define tcbase tcoffsetmap
#endif
#if defined(FLAT)
vec4 bases = vec4(FLAT, FLAT, FLAT, 1.0);
#else
vec4 bases = texture2D(s_diffuse, tcbase);
#ifdef VERTEXCOLOURS
bases.rgb *= bases.a;
#endif
#endif
#ifdef UPPER
vec4 uc = texture2D(s_upper, tcbase);
bases.rgb += uc.rgb*e_uppercolour*uc.a;
#endif
#ifdef LOWER
vec4 lc = texture2D(s_lower, tcbase);
bases.rgb += lc.rgb*e_lowercolour*lc.a;
#endif
#if defined(BUMP) || defined(SPECULAR) || defined(REFLECTCUBEMASK)
vec3 bumps = normalize(vec3(texture2D(s_normalmap, tcbase)) - 0.5);
#elif defined(REFLECTCUBEMASK)
vec3 bumps = vec3(0.0,0.0,1.0);
#endif
#ifdef SPECULAR
vec4 specs = texture2D(s_specular, tcbase);
#endif
vec3 diff;
#ifdef NOBUMP
//surface can only support ambient lighting, even for lights that try to avoid it.
diff = bases.rgb * (l_lightcolourscale.x+l_lightcolourscale.y);
#else
vec3 nl = normalize(lightvector);
#ifdef BUMP
diff = bases.rgb * (l_lightcolourscale.x + l_lightcolourscale.y * max(dot(bumps, nl), 0.0));
#else
//we still do bumpmapping even without bumps to ensure colours are always sane. light.exe does it too.
diff = bases.rgb * (l_lightcolourscale.x + l_lightcolourscale.y * max(dot(vec3(0.0, 0.0, 1.0), nl), 0.0));
#endif
#endif
#ifdef SPECULAR
vec3 halfdir = normalize(normalize(eyevector) + nl);
float spec = pow(max(dot(halfdir, bumps), 0.0), FTE_SPECULAR_EXPONENT * specs.a)*float(SPECMUL);
diff += l_lightcolourscale.z * spec * specs.rgb;
#endif
#ifdef REFLECTCUBEMASK
vec3 rtc = reflect(-eyevector, bumps);
rtc = rtc.x*invsurface[0] + rtc.y*invsurface[1] + rtc.z*invsurface[2];
rtc = (m_model * vec4(rtc.xyz,0.0)).xyz;
diff += texture2D(s_reflectmask, tcbase).rgb * textureCube(s_reflectcube, rtc).rgb;
#endif
#ifdef CUBE
/*filter the colour by the cubemap projection*/
diff *= textureCube(s_projectionmap, vtexprojcoord.xyz).rgb;
#endif
#if defined(PROJECTION)
/*2d projection, not used*/
// diff *= texture2d(s_projectionmap, shadowcoord);
#endif
#if defined(VERTEXCOLOURS)
diff *= vc.rgb * vc.a;
#endif
gl_FragColor.rgb = fog3additive(diff*colorscale*l_lightcolour);
}
#endif
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