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Fixed per-vertex colors (e.g. spritebatch colors) improperly applying gamma correction when the default shader is used and gamma correction is requested but not supported on OpenGL ES.

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This commit is contained in:
Alex Szpakowski
2016-03-26 12:01:34 -03:00
parent 829cf5fd06
commit aa88383793
5 changed files with 69 additions and 77 deletions
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src/modules/graphics/opengl/wrap_Graphics.lua
+36 -42
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@@ -23,6 +23,7 @@ misrepresented as being the original software.
--]]
local table_concat = table.concat
local ipairs = ipairs
-- SHADERS
@@ -139,6 +140,8 @@ varying vec4 VaryingColor;
uniform mediump float love_PointSize;
#endif]],
FUNCTIONS = "",
FOOTER = [[
void main() {
VaryingTexCoord = VertexTexCoord;
@@ -210,33 +213,21 @@ void main() {
}]],
}
local function createVertexCode(vertexcode, lang)
local vertexcodes = {
local function createShaderStageCode(stage, code, lang, gammacorrect, multicanvas)
stage = stage:upper()
local lines = {
lang == "glsles" and GLSL.VERSION_ES or GLSL.VERSION,
GLSL.SYNTAX,
love.graphics.isGammaCorrect() and "#define LOVE_GAMMA_CORRECT 1" or "",
GLSL.VERTEX.HEADER, GLSL.UNIFORMS,
gammacorrect and "#define LOVE_GAMMA_CORRECT 1" or "",
GLSL[stage].HEADER,
GLSL.UNIFORMS,
GLSL.FUNCTIONS,
GLSL[stage].FUNCTIONS,
lang == "glsles" and "#line 1" or "#line 0",
vertexcode,
GLSL.VERTEX.FOOTER,
code,
multicanvas and GLSL[stage].FOOTER_MULTI_CANVAS or GLSL[stage].FOOTER,
}
return table_concat(vertexcodes, "\n")
end
local function createPixelCode(pixelcode, is_multicanvas, lang)
local pixelcodes = {
lang == "glsles" and GLSL.VERSION_ES or GLSL.VERSION,
GLSL.SYNTAX,
love.graphics.isGammaCorrect() and "#define LOVE_GAMMA_CORRECT 1" or "",
GLSL.PIXEL.HEADER, GLSL.UNIFORMS,
GLSL.FUNCTIONS,
GLSL.PIXEL.FUNCTIONS,
lang == "glsles" and "#line 1" or "#line 0",
pixelcode,
is_multicanvas and GLSL.PIXEL.FOOTER_MULTI_CANVAS or GLSL.PIXEL.FOOTER,
}
return table_concat(pixelcodes, "\n")
return table_concat(lines, "\n")
end
local function isVertexCode(code)
@@ -258,11 +249,6 @@ function love.graphics._shaderCodeToGLSL(arg1, arg2)
local vertexcode, pixelcode
local is_multicanvas = false -- whether pixel code has "effects" function instead of "effect"
local lang = "glsl"
if (love.graphics.getRendererInfo()) == "OpenGL ES" then
lang = "glsles"
end
if arg1 then
if isVertexCode(arg1) then
vertexcode = arg1 -- first arg contains vertex shader code
@@ -287,11 +273,18 @@ function love.graphics._shaderCodeToGLSL(arg1, arg2)
end
end
local lang = "glsl"
if love.graphics.getRendererInfo() == "OpenGL ES" then
lang = "glsles"
end
local gammacorrect = love.graphics.isGammaCorrect()
if vertexcode then
vertexcode = createVertexCode(vertexcode, lang)
vertexcode = createShaderStageCode("VERTEX", vertexcode, lang, gammacorrect)
end
if pixelcode then
pixelcode = createPixelCode(pixelcode, is_multicanvas, lang)
pixelcode = createShaderStageCode("PIXEL", pixelcode, lang, gammacorrect, is_multicanvas)
end
return vertexcode, pixelcode
@@ -339,20 +332,21 @@ vec4 effect(mediump vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
}]],
}
local defaults = {
opengl = {
createVertexCode(defaultcode.vertex, "glsl"),
createPixelCode(defaultcode.pixel, false, "glsl"),
createPixelCode(defaultcode.videopixel, false, "glsl"),
},
opengles = {
createVertexCode(defaultcode.vertex, "glsles"),
createPixelCode(defaultcode.pixel, false, "glsles"),
createPixelCode(defaultcode.videopixel, false, "glsles"),
},
}
local defaults = {}
local defaults_gammacorrect = {}
love.graphics._setDefaultShaderCode(defaults)
for _, lang in ipairs{"glsl", "glsles"} do
for _, gammacorrect in ipairs{false, true} do
local t = gammacorrect and defaults_gammacorrect or defaults
t[lang] = {
vertex = createShaderStageCode("VERTEX", defaultcode.vertex, lang, gammacorrect),
pixel = createShaderStageCode("PIXEL", defaultcode.pixel, lang, gammacorrect, false),
videopixel = createShaderStageCode("PIXEL", defaultcode.videopixel, lang, gammacorrect, false),
}
end
end
love.graphics._setDefaultShaderCode(defaults, defaults_gammacorrect)
function love.graphics.newVideo(file, loadaudio)
local video = love.graphics._newVideo(file)