Platform: Added some fun example post processing shaders. exec postproc_*.cfg in console. It should suggest a few.

platform/base_postproc.pk3dir/glsl/postproc_software.glsl

@@ -0,0 +1,49 @@
+//
+// Copyright (c) 2016-2020 Marco Hladik <marco@icculus.org>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+!!samps screen=0
+!!ver 120
+
+#include "sys/defs.h"
+varying vec2 texcoord;
+
+#ifdef VERTEX_SHADER
+void main()
+{
+	texcoord = v_texcoord.xy;
+	texcoord.y = 1.0 - texcoord.y;
+	gl_Position = ftetransform();
+}
+#endif
+
+#ifdef FRAGMENT_SHADER
+uniform vec2 e_sourcesize;
+
+void main(void)
+{
+	vec3 col = texture2D(s_screen, texcoord).rgb;
+
+	/* just downconvert to 16-bit... if this was Unreal we'd dither first. */
+	col.rgb = floor(col.rgb * vec3(32,64,32))/vec3(32,64,32);
+	gl_FragColor = vec4(col, 1.0);
+}
+#endif

platform/base_postproc.pk3dir/glsl/postproc_unreal.glsl

@@ -0,0 +1,96 @@
+//
+// Copyright (c) 2016-2020 Marco Hladik <marco@icculus.org>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+!!samps screen=0
+!!ver 120
+
+#include "sys/defs.h"
+varying vec2 texcoord;
+
+#ifdef VERTEX_SHADER
+void main()
+{
+	texcoord = v_texcoord.xy;
+	texcoord.y = 1.0 - texcoord.y;
+	gl_Position = ftetransform();
+}
+#endif
+
+#ifdef FRAGMENT_SHADER
+uniform vec2 e_sourcesize;
+
+// from https://github.com/hughsk/glsl-dither/blob/master/4x4.glsl
+vec3 p_dither(vec2 position, vec3 col)
+{
+  float brightness = col.r + col.g + col.b / 3.0;
+ 
+  int x = int(mod(position.x, 4.0));
+  int y = int(mod(position.y, 4.0));
+  int index = x + y * 4;
+  float limit = 0.0;
+
+  if (x < 8) {
+    if (index == 0) limit = 0.0625;
+    if (index == 1) limit = 0.5625;
+    if (index == 2) limit = 0.1875;
+    if (index == 3) limit = 0.6875;
+    if (index == 4) limit = 0.8125;
+    if (index == 5) limit = 0.3125;
+    if (index == 6) limit = 0.9375;
+    if (index == 7) limit = 0.4375;
+    if (index == 8) limit = 0.25;
+    if (index == 9) limit = 0.75;
+    if (index == 10) limit = 0.125;
+    if (index == 11) limit = 0.625;
+    if (index == 12) limit = 1.0;
+    if (index == 13) limit = 0.5;
+    if (index == 14) limit = 0.875;
+    if (index == 15) limit = 0.375;
+  }
+
+  return col * (brightness < limit ? 0.0 : 1.0);
+}
+
+vec3 p_gamma(vec3 col)
+{
+	float gamma = 0.75f;
+	col.r = pow(col.r, 1.0 / gamma);
+	col.g = pow(col.g, 1.0 / gamma);
+	col.b = pow(col.b, 1.0 / gamma); 
+	return col;
+}
+
+void main(void)
+{
+	vec2 pos = vec2(gl_FragCoord.x, gl_FragCoord.y);
+	vec3 col = texture2D(s_screen, texcoord).rgb;
+
+	col = p_gamma(col);
+
+	// dither me
+	col = mix(col, p_dither(pos, col), 0.5f);
+
+	// 16-bit ify
+	col.rgb = floor(col.rgb * vec3(32,64,32))/vec3(32,64,32);
+	gl_FragColor = vec4(col, 1.0);
+}
+#endif

platform/base_postproc.pk3dir/glsl/postproc_voodoo.glsl

@@ -0,0 +1,154 @@
+//
+// Copyright (c) 2016-2020 Marco Hladik <marco@icculus.org>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+!!samps screen=0
+!!ver 120
+
+#include "sys/defs.h"
+varying vec2 texcoord;
+
+#ifdef VERTEX_SHADER
+void main()
+{
+	texcoord = v_texcoord.xy;
+	texcoord.y = 1.0 - texcoord.y;
+	gl_Position = ftetransform();
+}
+#endif
+
+#ifdef FRAGMENT_SHADER
+uniform vec2 e_sourcesize;
+
+
+// from https://github.com/hughsk/glsl-dither/blob/master/8x8.glsl
+vec3 p_dither(vec2 position, vec3 col)
+{
+  float brightness = col.r + col.g + col.b / 3.0;
+ 
+  int x = int(mod(position.x, 8.0));
+  int y = int(mod(position.y, 8.0));
+  int index = x + y * 8;
+  float limit = 0.0;
+
+  if (x < 8) {
+    if (index == 0) limit = 0.015625;
+    if (index == 1) limit = 0.515625;
+    if (index == 2) limit = 0.140625;
+    if (index == 3) limit = 0.640625;
+    if (index == 4) limit = 0.046875;
+    if (index == 5) limit = 0.546875;
+    if (index == 6) limit = 0.171875;
+    if (index == 7) limit = 0.671875;
+    if (index == 8) limit = 0.765625;
+    if (index == 9) limit = 0.265625;
+    if (index == 10) limit = 0.890625;
+    if (index == 11) limit = 0.390625;
+    if (index == 12) limit = 0.796875;
+    if (index == 13) limit = 0.296875;
+    if (index == 14) limit = 0.921875;
+    if (index == 15) limit = 0.421875;
+    if (index == 16) limit = 0.203125;
+    if (index == 17) limit = 0.703125;
+    if (index == 18) limit = 0.078125;
+    if (index == 19) limit = 0.578125;
+    if (index == 20) limit = 0.234375;
+    if (index == 21) limit = 0.734375;
+    if (index == 22) limit = 0.109375;
+    if (index == 23) limit = 0.609375;
+    if (index == 24) limit = 0.953125;
+    if (index == 25) limit = 0.453125;
+    if (index == 26) limit = 0.828125;
+    if (index == 27) limit = 0.328125;
+    if (index == 28) limit = 0.984375;
+    if (index == 29) limit = 0.484375;
+    if (index == 30) limit = 0.859375;
+    if (index == 31) limit = 0.359375;
+    if (index == 32) limit = 0.0625;
+    if (index == 33) limit = 0.5625;
+    if (index == 34) limit = 0.1875;
+    if (index == 35) limit = 0.6875;
+    if (index == 36) limit = 0.03125;
+    if (index == 37) limit = 0.53125;
+    if (index == 38) limit = 0.15625;
+    if (index == 39) limit = 0.65625;
+    if (index == 40) limit = 0.8125;
+    if (index == 41) limit = 0.3125;
+    if (index == 42) limit = 0.9375;
+    if (index == 43) limit = 0.4375;
+    if (index == 44) limit = 0.78125;
+    if (index == 45) limit = 0.28125;
+    if (index == 46) limit = 0.90625;
+    if (index == 47) limit = 0.40625;
+    if (index == 48) limit = 0.25;
+    if (index == 49) limit = 0.75;
+    if (index == 50) limit = 0.125;
+    if (index == 51) limit = 0.625;
+    if (index == 52) limit = 0.21875;
+    if (index == 53) limit = 0.71875;
+    if (index == 54) limit = 0.09375;
+    if (index == 55) limit = 0.59375;
+    if (index == 56) limit = 1.0;
+    if (index == 57) limit = 0.5;
+    if (index == 58) limit = 0.875;
+    if (index == 59) limit = 0.375;
+    if (index == 60) limit = 0.96875;
+    if (index == 61) limit = 0.46875;
+    if (index == 62) limit = 0.84375;
+    if (index == 63) limit = 0.34375;
+  }
+
+  return col * (brightness < limit ? 0.0 : 1.0);
+}
+
+vec3 p_gamma(vec3 col)
+{
+	float gamma = 1.5;
+	float lines = mod(gl_FragCoord.y, 2.0);
+
+	// scanlines.
+	if (lines < 1.0) {
+		gamma = 1.0f;
+	}
+
+	col.r = pow(col.r, 1.0 / gamma);
+	col.g = pow(col.g, 1.0 / gamma);
+	col.b = pow(col.b, 1.0 / gamma); 
+	return col;
+}
+
+void main(void)
+{
+	vec2 pos = vec2(gl_FragCoord.x, gl_FragCoord.y);
+	vec3 col = texture2D(s_screen, texcoord).rgb;
+
+	// mess with the gamma
+	col = p_gamma(col);
+
+	// dither comes last... we only want to mix some of it in
+	col = mix(col, p_dither(pos, col), 0.2f);
+
+	// 24 to 16
+	col.rgb = floor(col.rgb * vec3(32,64,32))/vec3(32,64,32);
+
+	gl_FragColor = vec4(col, 1.0);
+}
+#endif

platform/base_postproc.pk3dir/postproc_dull.cfg

@@ -0,0 +1,65 @@
+// fake 3dfx voodoo settings
+// aesthetic feature only
+
+seta gl_texturemode GL_LINEAR_MIPMAP_LINEAR
+seta d_mipcap 0 1000
+
+// software mode doesn't have any real size limitations
+seta gl_max_size 8192
+
+// make sure those gl vars are set to a minimal setting
+seta gl_affinemodels 0
+seta gl_blendsprites 0
+seta gl_flashblend 0
+seta gl_overbright 0
+seta gl_picmip 0
+seta gl_polyblend 1
+seta gl_specular 0
+seta gl_texture_anisotropic_filtering 0
+
+// interpolation
+seta cl_nolerp 0
+seta r_noframegrouplerp 0
+seta r_nolerp 0
+
+// lighting
+seta r_lightmap 0
+seta r_lightmap_format rgb8
+seta r_nolightdir 0
+seta r_loadlit 1
+
+// FBO settings
+seta r_renderscale 1
+
+// glsl trickery
+seta r_glsl_offsetmapping 0
+seta r_softwarebanding 0
+seta r_postprocshader ""
+seta gl_ldr 1
+
+// 3dfx GL Quake did not bother respecting colormaps, HL doesn't have one
+seta r_fb_bmodels 1
+seta r_fb_models 1
+
+// shadows
+seta r_shadows 2
+seta r_shadow_realtime_dlight 0
+seta r_shadow_realtime_dlight_shadows 0
+seta r_shadow_realtime_world 0
+
+// rest of the video gang
+seta r_bloom 0
+seta r_coronas 0
+seta r_deluxemapping 0
+seta r_drawflame 1
+seta r_drawflat 0
+seta r_dynamic 1
+seta r_fastsky 0
+seta r_lavastyle 1
+seta r_stains 0
+seta r_waterstyle 1
+seta r_waterwarp 0
+seta vid_hardwaregamma 1
+
+// apply
+vid_reload

platform/base_postproc.pk3dir/postproc_none.cfg

@@ -0,0 +1,65 @@
+// fake 3dfx voodoo settings
+// aesthetic feature only
+
+seta gl_texturemode GL_LINEAR_MIPMAP_LINEAR
+seta d_mipcap 0 1000
+
+// no limitations
+seta gl_max_size 8192
+
+// make sure those gl vars are set to a minimal setting
+seta gl_affinemodels 0
+seta gl_blendsprites 0
+seta gl_flashblend 0
+seta gl_overbright 2
+seta gl_picmip 0
+seta gl_polyblend 1
+seta gl_specular 0
+seta gl_texture_anisotropic_filtering 0
+
+// interpolation
+seta cl_nolerp 0
+seta r_noframegrouplerp 0
+seta r_nolerp 0
+
+// lighting
+seta r_lightmap 0
+seta r_lightmap_format rgb9e5
+seta r_nolightdir 0
+seta r_loadlit 1
+
+// FBO settings
+seta r_renderscale 1
+
+// glsl trickery
+seta r_glsl_offsetmapping 0
+seta r_softwarebanding 0
+seta r_postprocshader ""
+seta gl_ldr 0
+
+// colormap related
+seta r_fb_bmodels 1
+seta r_fb_models 1
+
+// shadows
+seta r_shadows 0
+seta r_shadow_realtime_dlight 0
+seta r_shadow_realtime_dlight_shadows 0
+seta r_shadow_realtime_world 0
+
+// rest of the video gang
+seta r_bloom 0
+seta r_coronas 0
+seta r_deluxemapping 0
+seta r_drawflame 1
+seta r_drawflat 0
+seta r_dynamic 1
+seta r_fastsky 0
+seta r_lavastyle 1
+seta r_stains 0
+seta r_waterstyle 1
+seta r_waterwarp 1
+seta vid_hardwaregamma 1
+
+// apply
+vid_reload

platform/base_postproc.pk3dir/postproc_software.cfg

@@ -0,0 +1,65 @@
+// fake 3dfx voodoo settings
+// aesthetic feature only
+
+seta gl_texturemode GL_NEAREST_MIPMAP_NEAREST
+seta d_mipcap 0 1000
+
+// software mode doesn't have any real size limitations
+seta gl_max_size 8192
+
+// make sure those gl vars are set to a minimal setting
+seta gl_affinemodels 1
+seta gl_blendsprites 0
+seta gl_flashblend 0
+seta gl_overbright 0
+seta gl_picmip 0
+seta gl_polyblend 1
+seta gl_specular 0
+seta gl_texture_anisotropic_filtering 0
+
+// interpolation
+seta cl_nolerp 1
+seta r_noframegrouplerp 0
+seta r_nolerp 1
+
+// lighting
+seta r_lightmap 0
+seta r_lightmap_format rgb8
+seta r_nolightdir 1
+seta r_loadlit 0
+
+// FBO settings
+seta r_renderscale 1
+
+// glsl trickery
+seta r_glsl_offsetmapping 0
+seta r_softwarebanding 1
+seta r_postprocshader postproc_software
+seta gl_ldr 1
+
+// 3dfx GL Quake did not bother respecting colormaps, HL doesn't have one
+seta r_fb_bmodels 1
+seta r_fb_models 1
+
+// shadows
+seta r_shadows 0
+seta r_shadow_realtime_dlight 0
+seta r_shadow_realtime_dlight_shadows 0
+seta r_shadow_realtime_world 0
+
+// rest of the video gang
+seta r_bloom 0
+seta r_coronas 0
+seta r_deluxemapping 0
+seta r_drawflame 1
+seta r_drawflat 0
+seta r_dynamic 1
+seta r_fastsky 0
+seta r_lavastyle 1
+seta r_stains 0
+seta r_waterstyle 1
+seta r_waterwarp 1
+seta vid_hardwaregamma 1
+
+// apply
+vid_reload

platform/base_postproc.pk3dir/postproc_unreal.cfg

@@ -0,0 +1,65 @@
+// fake 3dfx voodoo settings
+// aesthetic feature only
+
+seta gl_texturemode GL_NEAREST_MIPMAP_NEAREST
+seta d_mipcap 0 1000
+
+// software mode doesn't have any real size limitations
+seta gl_max_size 8192
+
+// make sure those gl vars are set to a minimal setting
+seta gl_affinemodels 1
+seta gl_blendsprites 0
+seta gl_flashblend 0
+seta gl_overbright 2
+seta gl_picmip 0
+seta gl_polyblend 1
+seta gl_specular 0
+seta gl_texture_anisotropic_filtering 0
+
+// interpolation
+seta cl_nolerp 1
+seta r_noframegrouplerp 0
+seta r_nolerp 1
+
+// lighting
+seta r_lightmap 0
+seta r_lightmap_format rgb9e5
+seta r_nolightdir 0
+seta r_loadlit 0
+
+// FBO settings
+seta r_renderscale 1
+
+// glsl trickery
+seta r_glsl_offsetmapping 0
+seta r_softwarebanding 1
+seta r_postprocshader postproc_unreal
+seta gl_ldr 0
+
+// 3dfx GL Quake did not bother respecting colormaps, HL doesn't have one
+seta r_fb_bmodels 1
+seta r_fb_models 1
+
+// shadows
+seta r_shadows 0
+seta r_shadow_realtime_dlight 0
+seta r_shadow_realtime_dlight_shadows 0
+seta r_shadow_realtime_world 0
+
+// rest of the video gang
+seta r_bloom 0
+seta r_coronas 0
+seta r_deluxemapping 0
+seta r_drawflame 1
+seta r_drawflat 0
+seta r_dynamic 1
+seta r_fastsky 0
+seta r_lavastyle 1
+seta r_stains 0
+seta r_waterstyle 1
+seta r_waterwarp 1
+seta vid_hardwaregamma 1
+
+// apply
+vid_reload

platform/base_postproc.pk3dir/postproc_voodoo.cfg

@@ -0,0 +1,65 @@
+// fake 3dfx voodoo settings
+// aesthetic feature only
+
+seta gl_texturemode GL_LINEAR_MIPMAP_LINEAR
+seta d_mipcap 0 1000
+
+// 3dfx cards of the time could only handle 256 wide textures
+seta gl_max_size 256
+
+// make sure those gl vars are set to a minimal setting
+seta gl_affinemodels 0
+seta gl_blendsprites 0
+seta gl_flashblend 0
+seta gl_overbright 0
+seta gl_picmip 0
+seta gl_polyblend 1
+seta gl_specular 0
+seta gl_texture_anisotropic_filtering 0
+
+// interpolation
+seta cl_nolerp 0
+seta r_noframegrouplerp 1
+seta r_nolerp 0
+
+// lighting
+seta r_lightmap 0
+seta r_lightmap_format rgb8
+seta r_nolightdir 1
+seta r_loadlit 0
+
+// FBO settings
+seta r_renderscale 1
+
+// glsl trickery
+seta r_glsl_offsetmapping 0
+seta r_softwarebanding 0
+seta r_postprocshader postproc_voodoo
+seta gl_ldr 1
+
+// 3dfx GL Quake did not bother respecting colormaps, HL doesn't have one
+seta r_fb_bmodels 0
+seta r_fb_models 0
+
+// shadows
+seta r_shadows 0
+seta r_shadow_realtime_dlight 0
+seta r_shadow_realtime_dlight_shadows 0
+seta r_shadow_realtime_world 0
+
+// rest of the video gang
+seta r_bloom 0
+seta r_coronas 0
+seta r_deluxemapping 0
+seta r_drawflame 1
+seta r_drawflat 0
+seta r_dynamic 1
+seta r_fastsky 0
+seta r_lavastyle 1
+seta r_stains 0
+seta r_waterstyle 1
+seta r_waterwarp 0
+seta vid_hardwaregamma 1
+
+// apply
+vid_reload

platform/base_postproc.pk3dir/scripts/softwareshader.shader

@@ -0,0 +1,16 @@
+postproc_software
+{
+	program postproc_software
+	{
+		map $sourcecolour
+		nodepthtest
+	}
+}
+postproc_unreal
+{
+	program postproc_unreal
+	{
+		map $sourcecolour
+		nodepthtest
+	}
+}

platform/base_postproc.pk3dir/scripts/voodoshader.shader

@@ -0,0 +1,8 @@
+postproc_voodoo
+{
+	program postproc_voodoo
+	{
+		map $sourcecolour
+		nodepthtest
+	}
+}