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Moved the love.graphics Lua code into the graphics module folder.
This commit is contained in:
Alex Szpakowski
@@ -0,0 +1,263 @@
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R"luastring"--(
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-- DO NOT REMOVE THE ABOVE LINE. It is used to load this file as a C++ string.
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-- There is a matching delimiter at the bottom of the file.
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--[[
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Copyright (c) 2006-2015 LOVE Development Team
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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--]]
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local table_concat = table.concat
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-- SHADERS
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local GLSL = {}
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GLSL.VERSION = "#version 120"
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GLSL.VERSION_ES = "#version 100"
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GLSL.SYNTAX = [[
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#ifndef GL_ES
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#define lowp
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#define mediump
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#define highp
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#endif
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#define number float
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#define Image sampler2D
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#define extern uniform
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#define Texel texture2D
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#pragma optionNV(strict on)]]
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-- Uniforms shared by the vertex and pixel shader stages.
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GLSL.UNIFORMS = [[
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#ifdef GL_ES
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// According to the GLSL ES 1.0 spec, uniform precision must match between stages,
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// but we can't guarantee that highp is always supported in fragment shaders...
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// We *really* don't want to use mediump for these in vertex shaders though.
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#if defined(VERTEX) || defined(GL_FRAGMENT_PRECISION_HIGH)
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#define LOVE_UNIFORM_PRECISION highp
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#else
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#define LOVE_UNIFORM_PRECISION mediump
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#endif
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uniform LOVE_UNIFORM_PRECISION mat4 TransformMatrix;
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uniform LOVE_UNIFORM_PRECISION mat4 ProjectionMatrix;
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uniform LOVE_UNIFORM_PRECISION mat4 TransformProjectionMatrix;
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#else
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#define TransformMatrix gl_ModelViewMatrix
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#define ProjectionMatrix gl_ProjectionMatrix
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#define TransformProjectionMatrix gl_ModelViewProjectionMatrix
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#endif
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uniform mediump vec4 love_ScreenSize;]]
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GLSL.VERTEX = {
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HEADER = [[
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#define VERTEX
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attribute vec4 VertexPosition;
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attribute vec4 VertexTexCoord;
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attribute vec4 VertexColor;
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varying vec4 VaryingTexCoord;
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varying vec4 VaryingColor;
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#ifdef GL_ES
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uniform mediump float love_PointSize;
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#endif]],
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FOOTER = [[
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void main() {
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VaryingTexCoord = VertexTexCoord;
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VaryingColor = VertexColor;
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#ifdef GL_ES
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gl_PointSize = love_PointSize;
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#endif
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gl_Position = position(TransformProjectionMatrix, VertexPosition);
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}]],
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}
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GLSL.PIXEL = {
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HEADER = [[
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#define PIXEL
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#ifdef GL_ES
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precision mediump float;
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#endif
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varying mediump vec4 VaryingTexCoord;
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varying lowp vec4 VaryingColor;
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#define love_Canvases gl_FragData
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uniform sampler2D _tex0_;]],
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FOOTER = [[
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void main() {
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// fix crashing issue in OSX when _tex0_ is unused within effect()
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float dummy = Texel(_tex0_, vec2(.5)).r;
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// See Shader::checkSetScreenParams in Shader.cpp.
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vec2 pixelcoord = vec2(gl_FragCoord.x, (gl_FragCoord.y * love_ScreenSize.z) + love_ScreenSize.w);
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gl_FragColor = effect(VaryingColor, _tex0_, VaryingTexCoord.st, pixelcoord);
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}]],
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FOOTER_MULTI_CANVAS = [[
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void main() {
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// fix crashing issue in OSX when _tex0_ is unused within effect()
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float dummy = Texel(_tex0_, vec2(.5)).r;
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// See Shader::checkSetScreenParams in Shader.cpp.
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vec2 pixelcoord = vec2(gl_FragCoord.x, (gl_FragCoord.y * love_ScreenSize.z) + love_ScreenSize.w);
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effects(VaryingColor, _tex0_, VaryingTexCoord.st, pixelcoord);
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}]],
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}
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local function createVertexCode(vertexcode, lang)
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local vertexcodes = {
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lang == "glsles" and GLSL.VERSION_ES or GLSL.VERSION,
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GLSL.SYNTAX, GLSL.VERTEX.HEADER, GLSL.UNIFORMS,
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lang == "glsles" and "#line 1" or "#line 0",
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vertexcode,
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GLSL.VERTEX.FOOTER,
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}
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return table_concat(vertexcodes, "\n")
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end
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local function createPixelCode(pixelcode, is_multicanvas, lang)
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local pixelcodes = {
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lang == "glsles" and GLSL.VERSION_ES or GLSL.VERSION,
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GLSL.SYNTAX, GLSL.PIXEL.HEADER, GLSL.UNIFORMS,
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lang == "glsles" and "#line 1" or "#line 0",
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pixelcode,
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is_multicanvas and GLSL.PIXEL.FOOTER_MULTI_CANVAS or GLSL.PIXEL.FOOTER,
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}
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return table_concat(pixelcodes, "\n")
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end
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local function isVertexCode(code)
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return code:match("vec4%s+position%s*%(") ~= nil
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end
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local function isPixelCode(code)
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if code:match("vec4%s+effect%s*%(") then
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return true
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elseif code:match("void%s+effects%s*%(") then
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-- function for rendering to multiple canvases simultaneously
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return true, true
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else
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return false
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end
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end
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function love.graphics._shaderCodeToGLSL(arg1, arg2)
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local vertexcode, pixelcode
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local is_multicanvas = false -- whether pixel code has "effects" function instead of "effect"
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local lang = "glsl"
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if (love.graphics.getRendererInfo()) == "OpenGL ES" then
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lang = "glsles"
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end
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if arg1 then
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if isVertexCode(arg1) then
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vertexcode = arg1 -- first arg contains vertex shader code
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end
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local ispixel, isMultiCanvas = isPixelCode(arg1)
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if ispixel then
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pixelcode = arg1 -- first arg contains pixel shader code
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is_multicanvas = isMultiCanvas
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end
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end
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if arg2 then
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if isVertexCode(arg2) then
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vertexcode = arg2 -- second arg contains vertex shader code
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end
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local ispixel, isMultiCanvas = isPixelCode(arg2)
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if ispixel then
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pixelcode = arg2 -- second arg contains pixel shader code
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is_multicanvas = isMultiCanvas
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end
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end
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if vertexcode then
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vertexcode = createVertexCode(vertexcode, lang)
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end
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if pixelcode then
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pixelcode = createPixelCode(pixelcode, is_multicanvas, lang)
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end
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return vertexcode, pixelcode
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end
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function love.graphics._transformGLSLErrorMessages(message)
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local shadertype = message:match("Cannot compile (%a+) shader code")
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if not shadertype then return message end
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local lines = {"Cannot compile "..shadertype.." shader code:"}
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for l in message:gmatch("[^\n]+") do
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-- nvidia compiler message:
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-- 0(<linenumber>) : error/warning [NUMBER]: <error message>
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local linenumber, what, message = l:match("^0%((%d+)%)%s*:%s*(%w+)[^:]+:%s*(.+)$")
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if not linenumber then
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-- ati compiler message:
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-- ERROR 0:<linenumber>: error/warning(#[NUMBER]) [ERRORNAME]: <errormessage>
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linenumber, what, message = l:match("^%w+: 0:(%d+):%s*(%w+)%([^%)]+%)%s*(.+)$")
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if not linenumber then
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-- OSX compiler message (?):
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-- ERROR: 0:<linenumber>: <errormessage>
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what, linenumber, message = l:match("^(%w+): %d+:(%d+): (.+)$")
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end
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end
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if linenumber and what and message then
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lines[#lines+1] = ("Line %d: %s: %s"):format(linenumber, what, message)
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end
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end
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-- did not match any known error messages
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if #lines == 1 then return message end
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return table_concat(lines, "\n")
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end
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local defaultcode = {
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vertex = [[
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vec4 position(mat4 transform_proj, vec4 vertpos) {
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return transform_proj * vertpos;
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}]],
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pixel = [[
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vec4 effect(lowp vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
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return Texel(tex, texcoord) * vcolor;
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}]]
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}
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local defaults = {
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opengl = {
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createVertexCode(defaultcode.vertex, "glsl"),
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createPixelCode(defaultcode.pixel, false, "glsl"),
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},
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opengles = {
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createVertexCode(defaultcode.vertex, "glsles"),
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createPixelCode(defaultcode.pixel, false, "glsles"),
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},
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}
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love.graphics._setDefaultShaderCode(defaults)
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-- DO NOT REMOVE THE NEXT LINE. It is used to load this file as a C++ string.
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--)luastring"--"
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