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Added GLSL ES 1.00 (OpenGL ES 2) shader support.

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--HG--
branch : minor
This commit is contained in:
Alex Szpakowski
2015-01-20 22:31:54 -04:00
parent 8067d42df2
commit 5df56d041a
9 changed files with 279 additions and 124 deletions
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src/scripts/graphics.lua
+55 -36
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@@ -1289,27 +1289,39 @@ do
-- SHADERS
local GLSL_VERSION = "#version 120"
local GLSL_SYNTAX = [[
local GLSL = {}
GLSL.VERSION = "#version 120"
GLSL.VERSION_ES = "#version 100"
GLSL.SYNTAX = [[
#ifndef GL_ES
#define lowp
#define mediump
#define highp
#endif
#define number float
#define Image sampler2D
#define extern uniform
#define Texel texture2D
#pragma optionNV(strict on)]]
local GLSL_UNIFORMS = [[
GLSL.UNIFORMS = [[
#ifdef GL_ES
uniform mat4 TransformMatrix;
uniform mat4 ProjectionMatrix;
uniform mat4 TransformProjectionMatrix;
// uniform mat4 NormalMatrix;
uniform mediump float love_PointSize;
#else
#define TransformMatrix gl_ModelViewMatrix
#define ProjectionMatrix gl_ProjectionMatrix
#define TransformProjectionMatrix gl_ModelViewProjectionMatrix
#define NormalMatrix gl_NormalMatrix
#endif
uniform sampler2D _tex0_;
uniform vec4 love_ScreenSize;]]
uniform mediump vec4 love_ScreenSize;]]
local GLSL_VERTEX = {
GLSL.VERTEX = {
HEADER = [[
#define VERTEX
@@ -1318,31 +1330,29 @@ attribute vec4 VertexTexCoord;
attribute vec4 VertexColor;
varying vec4 VaryingTexCoord;
varying vec4 VaryingColor;
// #if defined(GL_ARB_draw_instanced)
// #extension GL_ARB_draw_instanced : enable
// #define love_InstanceID gl_InstanceIDARB
// #else
// attribute float love_PseudoInstanceID;
// int love_InstanceID = int(love_PseudoInstanceID);
// #endif
]],
varying vec4 VaryingColor;]],
FOOTER = [[
void main() {
VaryingTexCoord = VertexTexCoord;
VaryingColor = VertexColor;
#ifdef GL_ES
gl_PointSize = love_PointSize;
#endif
gl_Position = position(TransformProjectionMatrix, VertexPosition);
}]],
}
local GLSL_PIXEL = {
GLSL.PIXEL = {
HEADER = [[
#define PIXEL
varying vec4 VaryingTexCoord;
varying vec4 VaryingColor;
#ifdef GL_ES
precision mediump float;
#endif
varying mediump vec4 VaryingTexCoord;
varying lowp vec4 VaryingColor;
#define love_Canvases gl_FragData]],
@@ -1369,24 +1379,24 @@ void main() {
}]],
}
local function createVertexCode(vertexcode)
local function createVertexCode(vertexcode, lang)
local vertexcodes = {
GLSL_VERSION,
GLSL_SYNTAX, GLSL_VERTEX.HEADER, GLSL_UNIFORMS,
"#line 0",
lang == "glsles" and GLSL.VERSION_ES or GLSL.VERSION,
GLSL.SYNTAX, GLSL.VERTEX.HEADER, GLSL.UNIFORMS,
lang == "glsles" and "#line 1" or "#line 0",
vertexcode,
GLSL_VERTEX.FOOTER,
GLSL.VERTEX.FOOTER,
}
return table_concat(vertexcodes, "\n")
end
local function createPixelCode(pixelcode, is_multicanvas)
local function createPixelCode(pixelcode, is_multicanvas, lang)
local pixelcodes = {
GLSL_VERSION,
GLSL_SYNTAX, GLSL_PIXEL.HEADER, GLSL_UNIFORMS,
"#line 0",
lang == "glsles" and GLSL.VERSION_ES or GLSL.VERSION,
GLSL.SYNTAX, GLSL.PIXEL.HEADER, GLSL.UNIFORMS,
lang == "glsles" and "#line 1" or "#line 0",
pixelcode,
is_multicanvas and GLSL_PIXEL.FOOTER_MULTI_CANVAS or GLSL_PIXEL.FOOTER,
is_multicanvas and GLSL.PIXEL.FOOTER_MULTI_CANVAS or GLSL.PIXEL.FOOTER,
}
return table_concat(pixelcodes, "\n")
end
@@ -1409,7 +1419,12 @@ void main() {
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
@@ -1435,10 +1450,10 @@ void main() {
end
if vertexcode then
vertexcode = createVertexCode(vertexcode)
vertexcode = createVertexCode(vertexcode, lang)
end
if pixelcode then
pixelcode = createPixelCode(pixelcode, is_multicanvas)
pixelcode = createPixelCode(pixelcode, is_multicanvas, lang)
end
return vertexcode, pixelcode
@@ -1477,15 +1492,19 @@ vec4 position(mat4 transform_proj, vec4 vertpos) {
return transform_proj * vertpos;
}]],
pixel = [[
vec4 effect(vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
vec4 effect(lowp vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
return Texel(tex, texcoord) * vcolor;
}]]
}
local defaults = {
opengl = {
createVertexCode(defaultcode.vertex),
createPixelCode(defaultcode.pixel, false),
createVertexCode(defaultcode.vertex, "glsl"),
createPixelCode(defaultcode.pixel, false, "glsl"),
},
opengles = {
createVertexCode(defaultcode.vertex, "glsles"),
createPixelCode(defaultcode.pixel, false, "glsles"),
},
}