library-mirrors/light_world.lua
1
0
Fork 0
mirror of https://github.com/tanema/light_world.lua.git synced 2024-12-24 20:24:19 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Added compatibility with android

Browse Source 
Added util.loadShader - loads shaders and sets uniform variables
Fixed implicit type conversions in shaders
This commit is contained in:
SpaVec 2017-07-17 23:01:13 +02:00
parent 2d39bb48cf
commit 378586c406
13 changed files with 104 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
lib/init.lua
View File

@ -31,10 +31,10 @@ local PostShader = require(_PACKAGE..'postshader')
local light_world = {}
light_world.__index = light_world
light_world.image_mask = love.graphics.newShader(_PACKAGE.."/shaders/image_mask.glsl")
light_world.shadowShader = love.graphics.newShader(_PACKAGE.."/shaders/shadow.glsl")
light_world.refractionShader = love.graphics.newShader(_PACKAGE.."shaders/refraction.glsl")
light_world.reflectionShader = love.graphics.newShader(_PACKAGE.."shaders/reflection.glsl")
light_world.image_mask = util.loadShader(_PACKAGE.."/shaders/image_mask.glsl")
light_world.shadowShader = util.loadShader(_PACKAGE.."/shaders/shadow.glsl")
light_world.refractionShader = util.loadShader(_PACKAGE.."/shaders/refraction.glsl")
light_world.reflectionShader = util.loadShader(_PACKAGE.."/shaders/reflection.glsl")
local function new(options)
local obj = {}

2
lib/postshader.lua
View File

@ -34,7 +34,7 @@ for i,v in ipairs(files) do
local name = _PACKAGE.."/shaders/postshaders".."/"..v
if love.filesystem.isFile(name) then
local str = love.filesystem.read(name)
local effect = love.graphics.newShader(name)
local effect = util.loadShader(name)
local defs = {}
for vtype, extern in str:gmatch("extern (%w+) (%w+)") do
defs[extern] = true

6
lib/shaders/postshaders/blurh.glsl
View File

@ -3,9 +3,9 @@ extern float steps = 2.0;
vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) {
vec2 pSize = vec2(1.0 / love_ScreenSize.x, 1.0 / love_ScreenSize.y);
vec4 col = Texel(texture, texture_coords);
for(int i = 1; i <= steps; i++) {
col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y - pSize.y * i));
col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * i));
for(int i = 1; i <= int(steps); i++) {
col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y - pSize.y * float(i)));
col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * float(i)));
}
col = col / (steps * 2.0 + 1.0);
return vec4(col.r, col.g, col.b, 1.0);

6
lib/shaders/postshaders/blurv.glsl
View File

@ -3,9 +3,9 @@ extern float steps = 2.0;
vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) {
vec2 pSize = vec2(1.0 / love_ScreenSize.x, 1.0 / love_ScreenSize.y);
vec4 col = Texel(texture, texture_coords);
for(int i = 1; i <= steps; i++) {
col = col + Texel(texture, vec2(texture_coords.x - pSize.x * i, texture_coords.y));
col = col + Texel(texture, vec2(texture_coords.x + pSize.x * i, texture_coords.y));
for(int i = 1; i <= int(steps); i++) {
col = col + Texel(texture, vec2(texture_coords.x - pSize.x * float(i), texture_coords.y));
col = col + Texel(texture, vec2(texture_coords.x + pSize.x * float(i), texture_coords.y));
}
col = col / (steps * 2.0 + 1.0);
return vec4(col.r, col.g, col.b, 1.0);

2
lib/shaders/postshaders/four_colors.glsl
View File

@ -2,7 +2,7 @@ extern vec3 palette[4];
vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords){
vec4 pixel = Texel(texture, texture_coords);
int index = int(min(0.9999, max(0.0001,(pixel.r + pixel.g + pixel.b) / 3.0)) * 4);
int index = int(min(0.9999, max(0.0001,(pixel.r + pixel.g + pixel.b) / 3.0)) * 4.0);
return vec4(palette[index], 1.0);
}

26
lib/shaders/postshaders/phosphor.glsl
View File

@ -94,22 +94,22 @@ vec4 grid_color( vec2 coords )
vec2 onex = vec2( 1.0/love_ScreenSize.x, 0.0 );
vec2 oney = vec2( 0.0, 1.0/love_ScreenSize.y );
vec4 effect(vec4 vcolor, Image texture, vec2 texCoord, vec2 pixel_coords)
vec4 effect(vec4 vcolor, Image texture, highp vec2 texCoord, vec2 pixel_coords)
{
vec2 coords = (texCoord * love_ScreenSize.xy);
vec2 pixel_start = floor(coords);
highp vec2 coords = (texCoord * love_ScreenSize.xy);
highp vec2 pixel_start = floor(coords);
coords -= pixel_start;
vec2 pixel_center = pixel_start + vec2(0.5);
vec2 texture_coords = pixel_center / love_ScreenSize.xy;
highp vec2 pixel_center = pixel_start + vec2(0.5);
highp vec2 texture_coords = pixel_center / love_ScreenSize.xy;
vec4 color = vec4(0.0);
vec4 pixel;
vec3 centers = vec3(-0.25,-0.5,-0.75);
vec3 posx = vec3(coords.x);
vec3 hweight;
float vweight;
float dx,dy;
float w;
highp vec4 color = vec4(0.0);
highp vec4 pixel;
highp vec3 centers = vec3(-0.25,-0.5,-0.75);
highp vec3 posx = vec3(coords.x);
highp vec3 hweight;
highp float vweight;
highp float dx,dy;
highp float w;
float i,j;

27
lib/shaders/postshaders/phosphorish.glsl
View File

@ -5,7 +5,7 @@
*/
// modified by slime73 for use with love pixeleffects
vec3 to_focus(float pixel)
vec3 to_focus(highp float pixel)
{
pixel = mod(pixel + 3.0, 3.0);
if (pixel >= 2.0) // Blue
@ -16,24 +16,24 @@ vec3 to_focus(float pixel)
return vec3(1.0 - pixel, pixel, 0.0);
}
vec4 effect(vec4 vcolor, Image texture, vec2 texture_coords, vec2 pixel_coords)
vec4 effect(vec4 vcolor, Image texture, highp vec2 texture_coords, vec2 pixel_coords)
{
float y = mod(texture_coords.y * love_ScreenSize.y, 1.0);
float intensity = exp(-0.2 * y);
highp float y = mod(texture_coords.y * love_ScreenSize.y, 1.0);
highp float intensity = exp(-0.2 * y);
vec2 one_x = vec2(1.0 / (3.0 * love_ScreenSize.x), 0.0);
highp vec2 one_x = vec2(1.0 / (3.0 * love_ScreenSize.x), 0.0);
vec3 color = Texel(texture, texture_coords - 0.0 * one_x).rgb;
vec3 color_prev = Texel(texture, texture_coords - 1.0 * one_x).rgb;
vec3 color_prev_prev = Texel(texture, texture_coords - 2.0 * one_x).rgb;
highp vec3 color = Texel(texture, texture_coords - 0.0 * one_x).rgb;
highp vec3 color_prev = Texel(texture, texture_coords - 1.0 * one_x).rgb;
highp vec3 color_prev_prev = Texel(texture, texture_coords - 2.0 * one_x).rgb;
float pixel_x = 3.0 * texture_coords.x * love_ScreenSize.x;
highp float pixel_x = 3.0 * texture_coords.x * love_ScreenSize.x;
vec3 focus = to_focus(pixel_x - 0.0);
vec3 focus_prev = to_focus(pixel_x - 1.0);
vec3 focus_prev_prev = to_focus(pixel_x - 2.0);
highp vec3 focus = to_focus(pixel_x - 0.0);
highp vec3 focus_prev = to_focus(pixel_x - 1.0);
highp vec3 focus_prev_prev = to_focus(pixel_x - 2.0);
vec3 result =
highp vec3 result =
0.8 * color * focus +
0.6 * color_prev * focus_prev +
0.3 * color_prev_prev * focus_prev_prev;
@ -42,4 +42,3 @@ vec4 effect(vec4 vcolor, Image texture, vec2 texture_coords, vec2 pixel_coords)
return vec4(intensity * result, 1.0);
}

4
lib/shaders/postshaders/radialblur.glsl
View File

@ -10,11 +10,11 @@ vec4 effect(vec4 vcolor, Image texture, vec2 texture_coords, vec2 pixel_coords)
int i;
for (i = 0; i < nsamples; i++)
{
number scale = blurstart + blurwidth * (i / float(nsamples-1));
number scale = blurstart + blurwidth * (float(i) / float(nsamples-1));
c.rgb += Texel(texture, texture_coords * scale).rgb;
}
c.rgb /= nsamples;
c.rgb /= float(nsamples);
return c;
}

8
lib/shaders/reflection.glsl
View File

@ -9,11 +9,11 @@ vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) {
if(normal.a > 0.0 && normal.r > 0.0) {
vec3 pColor = Texel(backBuffer, texture_coords).rgb;
vec4 pColor2;
for(int i = 0; i < reflectionStrength; i++) {
pColor2 = Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * i));
for(int i = 0; i < int(reflectionStrength); i++) {
pColor2 = Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * float(i)));
if(pColor2.a > 0.0 && pColor2.g > 0.0) {
vec3 rColor = Texel(backBuffer, vec2(texture_coords.x, texture_coords.y + pSize.y * i * 2.0)).rgb;
return vec4(rColor, (1.0 - i / reflectionStrength) * reflectionVisibility);
vec3 rColor = Texel(backBuffer, vec2(texture_coords.x, texture_coords.y + pSize.y * float(i) * 2.0)).rgb;
return vec4(rColor, (1.0 - float(i) / reflectionStrength) * reflectionVisibility);
}
}
return vec4(0.0);

3
lib/shaders/shadow.glsl
View File

@ -32,7 +32,7 @@ vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) {
pixel.rgb = lightColor * pow(att, lightSmooth);
}
} else {
vec3 normal = normalize(vec3(normalColor.r,invert_normal ? 1 - normalColor.g : normalColor.g, normalColor.b) * 2.0 - 1.0);
vec3 normal = normalize(vec3(normalColor.r,invert_normal ? 1.0 - normalColor.g : normalColor.g, normalColor.b) * 2.0 - 1.0);
//on the normal map, draw normal shadows
vec3 dir = vec3((lightPosition.xy - pixel_coords.xy) / love_ScreenSize.xy, lightPosition.z);
dir.x *= love_ScreenSize.x / love_ScreenSize.y;
@ -47,4 +47,3 @@ vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) {
return pixel;
}
}

37
lib/util.lua
View File

@ -59,4 +59,41 @@ function util.drawto(canvas, x, y, scale, cb)
love.graphics.pop()
end
function util.loadShader(name)
local shader = ""
local externInit = {}
for line in love.filesystem.lines(name) do
if line:sub(1,6) == "extern" then
local type, name = line:match("extern (%w+) (%w+)")
local value = line:match("=(.*);")
if value then
externInit[name] = {type=type, val=value}
line = line:match("extern %w+ %w+")..";"
end
end
shader = shader.."\n"..line
end
local effect = love.graphics.newShader(shader)
for k, v in pairs(externInit) do
if v.type == "bool" then
effect:send(k, v.val)
elseif v.type == "int" or v.type == "uint" then
effect:sendInt(k, tonumber(v.val))
elseif v.type == "float" or v.type == "double" or v.type == "number" then
effect:send(k, tonumber(v.val))
elseif v.type:sub(1,3) == "vec" then
v.val = v.val:gsub(" ", ""):sub(6):sub(1, -2)
local next = v.val:gmatch("([^,]+)")
local values = {}
for n in next do
table.insert(values, tonumber(n))
end
effect:send(k, values)
end
end
return effect
end
return util