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Fix shaders for proprietary Broadcom video driver

This commit is contained in:
gamax92 2016-09-21 11:37:56 -06:00
parent fe93fb51d9
commit ed7eea26c0
1 changed files with 34 additions and 8 deletions
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42
main.lua
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@ -259,44 +259,70 @@ function love.load(argv)
pico8.display_palette[i]=pico8.palette[i+1]
end
pico8.draw_shader=love.graphics.newShader([[
local name, version, vendor, device=love.graphics.getRendererInfo()
local pishaderfix
if name=="OpenGL ES" and not version:find(" Mesa ", nil, true) and vendor=="Broadcom" then
print("Using proprietary Broadcom video driver shader fixes")
pishaderfix=function(code)
return (code:gsub("ifblock(%b());", function(name)
name=name:sub(2, -2)
local kind, length=code:match("extern ([%a_][%w_]-) "..name.."%[(%d-)%]")
local code=kind.." _"..name..";"
for i=0, length-1 do
code=code.."\n\t"..(i==0 and "" or "else ").."if (index=="..i..")\n\t\t_"..name.."="..name.."["..i.."];"
end
return code
end):gsub("([%a_][%w_]-)%[index%]", "_%1"))
end
else
pishaderfix=function(code)
return (code:gsub("ifblock%b();", ""))
end
end
pico8.draw_shader=love.graphics.newShader(pishaderfix([[
extern float palette[16];
vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords) {
int index=int(color.r*255.0+0.5);
ifblock(palette);
return vec4(palette[index]/255.0, 0.0, 0.0, 1.0);
}]])
}]]))
pico8.draw_shader:send('palette', shdr_unpack(pico8.draw_palette))
pico8.sprite_shader=love.graphics.newShader([[
pico8.sprite_shader=love.graphics.newShader(pishaderfix([[
extern float palette[16];
extern float transparent[16];
vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords) {
int index=int(Texel(texture, texture_coords).r*255.0+0.5);
ifblock(palette);
ifblock(transparent);
return vec4(palette[index]/255.0, 0.0, 0.0, transparent[index]);
}]])
}]]))
pico8.sprite_shader:send('palette', shdr_unpack(pico8.draw_palette))
pico8.sprite_shader:send('transparent', shdr_unpack(pico8.pal_transparent))
pico8.text_shader=love.graphics.newShader([[
pico8.text_shader=love.graphics.newShader(pishaderfix([[
extern float palette[16];
vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords) {
vec4 texcolor=Texel(texture, texture_coords);
int index=int(color.r*255.0+0.5);
ifblock(palette);
return vec4(palette[index]/255.0, 0.0, 0.0, texcolor.a);
}]])
}]]))
pico8.text_shader:send('palette', shdr_unpack(pico8.draw_palette))
pico8.display_shader=love.graphics.newShader([[
pico8.display_shader=love.graphics.newShader(pishaderfix([[
extern vec4 palette[16];
vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords) {
int index=int(Texel(texture, texture_coords).r*255.0+0.5);
ifblock(palette);
// lookup the colour in the palette by index
return palette[index]/255.0;
}]])
}]]))
pico8.display_shader:send('palette', shdr_unpack(pico8.display_palette))
api=require("api")