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libGL.as
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libGL.as
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/*
Copyright (c) 2012, Adobe Systems Incorporated
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Adobe Systems Incorporated nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package GLS3D
{
import flash.display.*;
import flash.display3D.*;
import flash.display3D.textures.*;
import flash.events.Event;
import flash.events.KeyboardEvent;
import flash.events.TextEvent;
import flash.geom.*;
import flash.text.TextField;
import flash.text.TextFieldType;
import flash.trace.Trace;
import flash.utils.*;
import com.adobe.utils.*;
import com.adobe.utils.macro.*;
import com.adobe.flascc.CModule;
// Linker trickery
[Csym("D", "___libgl_abc__", ".data")]
public class GLAPI
{
include 'libGLconsts.as';
private static var _instance:GLAPI
public var disableCulling:Boolean = false
public var disableBlending:Boolean = false
public var log:Object = null; // new TraceLog();
public var context:Context3D
public var genOnBind:Boolean = false
private const consts:Vector.<Number> = new <Number>[0.0, 0.5, 1.0, 2.0]
private const zeroes:Vector.<Number> = new <Number>[0.0, 0.0, 0.0, 0.0]
// bit 0 = whether textures are enabled
private const ENABLE_TEXTURE_OFFSET:uint = 0
// bits 1-6 = whether clip planes 0-5 are enabled
private const ENABLE_CLIPPLANE_OFFSET:uint = 1
// bit 7 = whether color material is enabled
private const ENABLE_COLOR_MATERIAL_OFFSET:uint = 7
// bit 8 = whether lighting is enabled
private const ENABLE_LIGHTING_OFFSET:uint = 8
// bit 9-16 = whether lights 0-7 are enabled
private const ENABLE_LIGHT_OFFSET:uint = 9
// bit 17 = whether specular is separate
private const ENABLE_SEPSPEC_OFFSET:uint = 17
// bit 18 = whether polygon offset is enabled
private const ENABLE_POLYGON_OFFSET:uint = 18
private var _stage:Stage
private var overrideR:uint
private var overrideG:uint
private var overrideB:uint
private var overrideA:uint = 0xFF
private var scissorRect:Rectangle
private var contextEnableScissor:Boolean = false
private var bgColorOverride:Boolean = false
private var fixed_function_programs:Dictionary = new Dictionary()
private var contextDepthFunction:String = Context3DCompareMode.LESS
private var reusableCommandList:CommandList = new CommandList()
private var reusableVertexBuffers:Dictionary = new Dictionary()
private var immediateVertexBuffers:VertexBufferPool = new VertexBufferPool()
private var sharedIndexBuffers:Dictionary = new Dictionary()
private var contextColor:Vector.<Number> = new <Number>[1, 1, 1, 1]
private var frontFaceClockWise:Boolean = false // we default to CCW
private var glCullMode:uint = GL_BACK
private var lightingStates:Vector.<LightingState> = new Vector.<LightingState>()
private var texID:uint = 1 // so we have 0 as non-valid id
private var shininessVec:Vector.<Number> = new <Number>[0.0, 0.0, 0.0, 0.0]
private var globalAmbient:Vector.<Number> = new <Number>[0.2, 0.2, 0.2, 1]
private var polygonOffsetValue:Number = -0.0005
private var lights:Vector.<Light> = new Vector.<Light>(8)
private var lightsEnabled:Vector.<Boolean> = new Vector.<Boolean>(8)
private var enableTexGenS:Boolean = false
private var enableTexGenT:Boolean = false
private var texGenParamS:uint = GL_SPHERE_MAP
private var texGenParamT:uint = GL_SPHERE_MAP
private var contextWidth:int = 0
private var contextHeight:int = 0
private var contextAA:int = 0
private var contextClearR:Number
private var contextClearG:Number
private var contextClearB:Number
private var contextClearA:Number
private var contextClearDepth:Number = 1.0
private var contextClearStencil:uint = 0
private var contextClearMask:uint
private var contextEnableStencil:Boolean = false
private var contextEnableAlphaTest:Boolean = false
private var contextStencilActionStencilFail:String = Context3DStencilAction.KEEP
private var contextStencilActionDepthFail:String = Context3DStencilAction.KEEP
private var contextStencilActionPass:String = Context3DStencilAction.KEEP
private var contextStencilCompareMode:String = Context3DCompareMode.ALWAYS
private var contextEnableDepth:Boolean = true
private var contextDepthMask:Boolean = true
private var contextSrcBlendFunc:String = Context3DBlendFactor.ZERO
private var contextDstBlendFunc:String = Context3DBlendFactor.ONE
private var contextEnableCulling:Boolean
private var contextEnableBlending:Boolean
private var contextDepthFunc:String = Context3DCompareMode.ALWAYS
private var contextEnableTextures:Boolean = false
private var contextEnableLighting:Boolean = false
private var contextColorMaterial:Boolean = false
private var contextSeparateSpecular:Boolean = false
private var contextEnablePolygonOffset:Boolean = false
private var needClear:Boolean = true
private var vertexAttributesDirty:Boolean = true
private var activeCommandList:CommandList = null
private var commandLists:Vector.<CommandList> = null
private var textures:Dictionary = new Dictionary()
private var vertexBufferAttributes:Vector.<VertexBufferAttribute> = new Vector.<VertexBufferAttribute>(8)
private var textureUnits:Array = new Array(32)
private var activeProgram:ProgramInstance
private var activeTextureUnit:uint = 0
private var activeTexture:TextureInstance
private var textureSamplers:Vector.<TextureInstance> = new Vector.<TextureInstance>(8)
private var textureSamplerIDs:Vector.<uint> = new Vector.<uint>(8)
private var vertexBufferObjects:Vector.<VertexBuffer3D> = new Vector.<VertexBuffer3D>()
private var framestamp:uint = 1
private var offsetFactor:Number = 0.0
private var offsetUnits:Number = 0.0
private var glStateFlags:uint = 0
private var clipPlanes:Vector.<Number> = new Vector.<Number>(6 * 4) // space for 6 clip planes
private var clipPlaneEnabled:Vector.<Boolean> = new Vector.<Boolean>(8) // defaults to false
private var modelViewStack:Vector.<Matrix3D> = new <Matrix3D>[ new Matrix3D() ]
private var projectionStack:Vector.<Matrix3D> = new <Matrix3D>[ new Matrix3D() ]
private var textureStack:Vector.<Matrix3D> = new <Matrix3D>[ new Matrix3D() ]
private var currentMatrixStack:Vector.<Matrix3D> = modelViewStack
private var contextMaterial:Material = new Material(true)
private var cubeVertexData:Vector.<Number>;
private var cubeVertexBuffer:VertexBuffer3D = null;
public static function init(context:Context3D, log:Object, stage:Stage):void
{
_instance = new GLAPI(context, log, stage)
if (log) log.send("GLAPI initialized.")
}
public static function get instance():GLAPI
{
if (!_instance)
{
trace("Instance is null, did you forget calling GLAPI.init() in AlcConsole.as?")
}
return _instance
}
public function send(value:String):void
{
if (log)
log.send(value)
}
private function matrix3DToString(m:Matrix3D):String
{
var data:Vector.<Number> = m.rawData
return ("[ " + data[0].toFixed(3) + ", " + data[4].toFixed(3) + ", " + data[8].toFixed(3) + ", " + data[12].toFixed(3) + " ]\n" +
"[ " + data[1].toFixed(3) + ", " + data[5].toFixed(3) + ", " + data[9].toFixed(3) + ", " + data[13].toFixed(3) + " ]\n" +
"[ " + data[2].toFixed(3) + ", " + data[6].toFixed(3) + ", " + data[10].toFixed(3) + ", " + data[14].toFixed(3) + " ]\n" +
"[ " + data[3].toFixed(3) + ", " + data[7].toFixed(3) + ", " + data[11].toFixed(3) + ", " + data[15].toFixed(3) + " ]")
}
// ======================================================================
// Polygon Offset
// ----------------------------------------------------------------------
public function glPolygonMode(face:uint, mode:uint):void
{
switch(mode)
{
case GL_POINT:
if (log) log.send("glPolygonMode GL_POINT not yet implemented, mode is always GL_FILL.")
break
case GL_LINE:
if (log) log.send("glPolygonMode GL_LINE not yet implemented, mode is always GL_FILL.")
break
default:
// GL_FILL!
}
}
public function glPolygonOffset(factor:Number, units:Number):void
{
offsetFactor = factor
offsetUnits = units
//if (log) log.send("glPolygonOffset() called with (" + factor + ", " + units + ")")
if (log) log.send("glPolygonOffset() not yet implemented.")
}
public function glShadeModel(mode:uint):void
{
switch(mode)
{
case GL_FLAT:
if (log) log.send("glShadeModel GL_FLAT not yet implemented, mode is always GL_SMOOTH.")
break
default:
// GL_SMOOTH!
}
}
// ======================================================================
// Alpha Testing
// ----------------------------------------------------------------------
public function glAlphaFunc(func:uint, ref:Number):void
{
//TODO: fixme
}
private function setVector(vec:Vector.<Number>, x:Number, y:Number, z:Number, w:Number):void
{
vec[0] = x
vec[1] = y
vec[2] = z
vec[3] = w
}
private function copyVector(dest:Vector.<Number>, src:Vector.<Number>):void
{
dest[0] = src[0]
dest[1] = src[1]
dest[2] = src[2]
dest[3] = src[3]
}
public function glMaterial(face:uint, pname:uint, r:Number, g:Number, b:Number, a:Number):void
{
// if pname == GL_SPECULAR, then "r" is shininess.
// FIXME (klin): Ignore face for now. Always GL_FRONT_AND_BACK
var material:Material
if (activeCommandList)
{
var activeState:ContextState = activeCommandList.ensureActiveState()
material = activeCommandList.activeState.material
}
else
{
material = contextMaterial
}
switch (pname)
{
case GL_AMBIENT:
if (!material.ambient)
material.ambient = new <Number>[r, g, b, a]
else
setVector(material.ambient, r, g, b, a)
break
case GL_DIFFUSE:
if (!material.diffuse)
material.diffuse = new <Number>[r, g, b, a]
else
setVector(material.diffuse, r, g, b, a)
break
case GL_AMBIENT_AND_DIFFUSE:
if (!material.ambient)
material.ambient = new <Number>[r, g, b, a]
else
setVector(material.ambient, r, g, b, a)
if (!material.diffuse)
material.diffuse = new <Number>[r, g, b, a]
else
setVector(material.diffuse, r, g, b, a)
break
case GL_SPECULAR:
if (!material.specular)
material.specular = new <Number>[r, g, b, a]
else
setVector(material.specular, r, g, b, a)
break
case GL_SHININESS:
material.shininess = r
break
case GL_EMISSION:
if (!material.emission)
material.emission = new <Number>[r, g, b, a]
else
setVector(material.emission, r, g, b, a)
break
default:
if (log) log.send("[NOTE] Unsupported glMaterial call with 0x" + pname.toString(16))
}
}
public function glLightModeli(pname:uint, param:int):void
{
switch (pname)
{
case GL_LIGHT_MODEL_COLOR_CONTROL:
contextSeparateSpecular = (param == GL_SEPARATE_SPECULAR_COLOR)
if (contextSeparateSpecular)
setGLState(ENABLE_SEPSPEC_OFFSET)
else
clearGLState(ENABLE_SEPSPEC_OFFSET)
break
// unsupported for now
case GL_LIGHT_MODEL_TWO_SIDE:
case GL_LIGHT_MODEL_AMBIENT:
case GL_LIGHT_MODEL_LOCAL_VIEWER:
default:
break
}
if (log) log.send("glLightModeli() not yet implemented")
}
public function glLight(light:uint, pname:uint, r:Number, g:Number, b:Number, a:Number):void
{
var lightIndex:int = light - GL_LIGHT0
if (lightIndex < 0 || lightIndex > 7)
{
if (log) log.send("glLight(): light index " + lightIndex + " out of bounds")
return
}
var l:Light = lights[lightIndex]
if (!l)
l = lights[lightIndex] = new Light(true, lightIndex == 0)
switch (pname)
{
case GL_AMBIENT:
l.ambient[0] = r
l.ambient[1] = g
l.ambient[2] = b
l.ambient[3] = a
break
case GL_DIFFUSE:
l.diffuse[0] = r
l.diffuse[1] = g
l.diffuse[2] = b
l.diffuse[3] = a
break
case GL_SPECULAR:
l.specular[0] = r
l.specular[1] = g
l.specular[2] = b
l.specular[3] = a
break
case GL_POSITION:
// transform position to eye-space before storing.
var m:Matrix3D = modelViewStack[modelViewStack.length - 1].clone();
var result:Vector3D;
if (a == 0.0)
{ // Directional light
m.position = new Vector3D(0, 0, 0, 1);
result = m.transformVector(new Vector3D(r, g, b, a));
l.position[0] = result.x;
l.position[1] = result.y;
l.position[2] = result.z;
l.position[3] = 0;
l.type = Light.LIGHT_TYPE_DIRECTIONAL;
}
else
{ // Point light
result = m.transformVector(new Vector3D(r, g, b, a));
l.position[0] = result.x;
l.position[1] = result.y;
l.position[2] = result.z;
l.position[3] = result.w;
l.type = Light.LIGHT_TYPE_POINT;
}
break
default:
break
}
}
public function glGetIntegerv(pname:uint, buf:ByteArray, offset:uint):void
{
if (log) log.send("glGetIntegerv")
switch (pname)
{
case GL_MAX_TEXTURE_SIZE:
buf.position = offset
buf.writeInt(4096)
break
case GL_VIEWPORT:
buf.position = offset+0; buf.writeInt(0); // x
buf.position = offset+4; buf.writeInt(0); // y
buf.position = offset+8; buf.writeInt(contextWidth); // width
buf.position = offset+12; buf.writeInt(contextHeight); // height
break
default:
if (log) log.send("[NOTE] Unsupported glGetIntegerv call with 0x" + pname.toString(16))
}
}
public function glGetFloatv(pname:uint, buf:ByteArray, offset:uint):void
{
if (log) log.send("glGetFloatv")
switch (pname)
{
case GL_MODELVIEW_MATRIX:
var v:Vector.<Number> = new Vector.<Number>(16)
modelViewStack[modelViewStack.length - 1].copyRawDataTo(v)
buf.position = offset
for (var i:int; i < 16; i++)
buf.writeFloat(v[i])
break
default:
if (log) log.send("[NOTE] Unsupported glGetFloatv call with 0x" + pname.toString(16))
}
}
public function glClipPlane(plane:uint, a:Number, b:Number, c:Number, d:Number):void
{
if (log) log.send("[NOTE] glClipPlane called for plane 0x" + plane.toString(16) + ", with args " + a + ", " + b + ", " + c + ", " + d)
var index:int = plane - GL_CLIP_PLANE0
// Convert coordinates to eye space (modelView) before storing
var m:Matrix3D = modelViewStack[modelViewStack.length - 1].clone()
m.invert()
m.transpose()
var result:Vector3D = m.transformVector(new Vector3D(a, b, c, d))
clipPlanes[ index * 4 + 0 ] = result.x
clipPlanes[ index * 4 + 1 ] = result.y
clipPlanes[ index * 4 + 2 ] = result.z
clipPlanes[ index * 4 + 3 ] = a * m.rawData[3] + b * m.rawData[7] + c * m.rawData[11] + d * m.rawData[15] //result.w
}
private function executeCommandList(cl:CommandList):void
{
// FIXME (egeorgire): do this on-deamnd?
// Pre-calculate matrix
var m:Matrix3D = modelViewStack[modelViewStack.length - 1].clone()
var p:Matrix3D = projectionStack[projectionStack.length - 1].clone()
var t:Matrix3D = textureStack[textureStack.length - 1].clone()
//m.append(p)
p.prepend(m)
var invM:Matrix3D = m.clone()
invM.invert()
var modelToClipSpace:Matrix3D = p
if (isGLState(ENABLE_POLYGON_OFFSET))
{
// Adjust the projection matrix to give us z offset
if (log)
log.send("Applying polygon offset")
modelToClipSpace = p.clone()
modelToClipSpace.appendTranslation(0, 0, polygonOffsetValue)
}
// Current active textures ??
var ti:TextureInstance
var i:int
for (i = 0; i < 1; i++ )
{
ti = textureSamplers[i]
if (ti && contextEnableTextures) {
context.setTextureAt(i, ti.boundType == GL_TEXTURE_2D ? ti.texture : ti.cubeTexture)
if(log) log.send("setTexture " + i + " -> " + ti.texID)
}
else {
context.setTextureAt(i, null)
if(log) log.send("setTexture " + i + " -> 0")
}
}
var textureStatInvalid:Boolean = false;
const count:int = cl.commands.length
var command:Object
for (var k:int = 0; k < count; k++)
{
command = cl.commands[k]
var stateChange:ContextState = command as ContextState
if (stateChange)
{
// We execute state changes before stream changes, so
// we must have a state change
// Execute state changes
if (contextEnableTextures && stateChange.textureSamplers)
{
for (i = 0; i < 1; i++ )
{
var texID:int = stateChange.textureSamplers[i]
if (texID != -1)
{
if (log) log.send("Mapping texture " + texID + " to sampler " + i)
ti = (texID != 0) ? textures[texID] : null
textureSamplers[i] = ti
activeTexture = ti // Executing the glBind, so that after running through the list we have the side-effect correctly
textureStatInvalid = true
if (ti)
context.setTextureAt(i, ti.boundType == GL_TEXTURE_2D ? ti.texture : ti.cubeTexture)
else
context.setTextureAt(i, null)
if(log) log.send("setTexture " + i + " -> " + (ti ? ti.texID : 0))
}
}
}
var stateMaterial:Material = stateChange.material
if (stateMaterial)
{
if (stateMaterial.ambient)
copyVector(contextMaterial.ambient, stateMaterial.ambient)
if (stateMaterial.diffuse)
copyVector(contextMaterial.diffuse, stateMaterial.diffuse)
if (stateMaterial.specular)
copyVector(contextMaterial.specular, stateMaterial.specular)
if (!isNaN(stateMaterial.shininess))
contextMaterial.shininess = stateMaterial.shininess
if (stateMaterial.emission)
copyVector(contextMaterial.emission, stateMaterial.emission)
}
}
var stream:VertexStream = command as VertexStream
if (stream)
{
// Make sure we have the right program, and see if we need to updated it if some state change requires it
ensureProgramUpToDate(stream)
// If the program has no textures, then disable them all:
if (!stream.program.hasTexture)
{
for (i = 0; i < 8; i++ )
{
context.setTextureAt(i, null)
if(log) log.send("setTexture " + i + " -> 0")
}
}
context.setProgram(stream.program.program)
// FIXME (egeorgie): do we need to do this after setting every program, or just once after we calculate the matrix?
if (stream.polygonOffset)
{
// Adjust the projection matrix to give us z offset
if (log)
log.send("Applying polygon offset, recorded in the list")
modelToClipSpace = p.clone()
modelToClipSpace.appendTranslation(0, 0, polygonOffsetValue)
}
context.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 0, modelToClipSpace, true)
if (stream.polygonOffset)
{
// Restore
modelToClipSpace = p
}
context.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 4, m, true)
context.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 8, invM, true)
context.setProgramConstantsFromMatrix(Context3DProgramType.VERTEX, 12, t, true)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 16, consts)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 17, contextColor)
// Upload the clip planes
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 18, clipPlanes, 6)
// Zero-out the ones that are not enabled
for (i = 0; i < 6; i++)
{
if (!clipPlaneEnabled[i])
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 18 + i, zeroes, 1)
}
// Calculate origin of eye-space
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 24, new <Number>[0, 0, 0, 1], 1)
// Upload material components
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 25, contextMaterial.ambient, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 26, contextMaterial.diffuse, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 27, contextMaterial.specular, 1)
shininessVec[0] = contextMaterial.shininess
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 28, shininessVec, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 29, contextMaterial.emission, 1)
// Upload lights
// FIXME (klin): will be per light...for now, fake a light and assume local viewer.
// default global light:
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, 30, globalAmbient, 1)
// light constants
for (i = 0; i < 8; i++)
{
var index:int = 31 + i*4
if (lightsEnabled[i])
{
var l:Light = lights[i]
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index, l.position, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index+1, l.ambient, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index+2, l.diffuse, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index+3, l.specular, 1)
}
else
{
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index, zeroes, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index+1, zeroes, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index+2, zeroes, 1)
context.setProgramConstantsFromVector(Context3DProgramType.VERTEX, index+3, zeroes, 1)
}
}
// Map the Vertex buffer
// position
context.setVertexBufferAt(0, stream.vertexBuffer, 0 /*bufferOffset*/, Context3DVertexBufferFormat.FLOAT_3)
// color
if (0 != (stream.program.vertexStreamUsageFlags & VertexBufferBuilder.HAS_COLOR))
context.setVertexBufferAt(1, stream.vertexBuffer, 3 /*bufferOffset*/, Context3DVertexBufferFormat.FLOAT_4)
else
context.setVertexBufferAt(1, null)
// normal
if (0 != (stream.program.vertexStreamUsageFlags & VertexBufferBuilder.HAS_NORMAL))
context.setVertexBufferAt(2, stream.vertexBuffer, 7 /*bufferOffset*/, Context3DVertexBufferFormat.FLOAT_3)
else
context.setVertexBufferAt(2, null)
// texture coords
if (0 != (stream.program.vertexStreamUsageFlags & VertexBufferBuilder.HAS_TEXTURE2D))
context.setVertexBufferAt(3, stream.vertexBuffer, 10 /*bufferOffset*/, Context3DVertexBufferFormat.FLOAT_2)
else
context.setVertexBufferAt(3, null)
context.drawTriangles(stream.indexBuffer)
// If we're executing on compilation, this may be an immediate command stream, so update the pool
if (cl.executeOnCompile)
immediateVertexBuffers.markInUse(stream.vertexBuffer)
}
}
}
public function glGenLists(count:uint):uint
{
if (log) log.send("glGenLists " + count)
if (!commandLists)
commandLists = new Vector.<CommandList>()
var oldLength:int = commandLists.length
commandLists.length = oldLength + count
return oldLength
}
public function glMatrixMode(mode:uint):void
{
if (log) log.send("glMatrixMode \nSwitch stack to " + MATRIX_MODE[mode - GL_MODELVIEW])
switch (mode)
{
case GL_MODELVIEW:
currentMatrixStack = modelViewStack
break
case GL_PROJECTION:
currentMatrixStack = projectionStack
break
case GL_TEXTURE:
currentMatrixStack = textureStack
break
default:
if (log) log.send("Unknown Matrix Mode " + mode)
}
}
public function glPushMatrix():void
{
if (log) log.send("glPushMatrix")
currentMatrixStack.push(currentMatrixStack[currentMatrixStack.length - 1].clone())
}
public function glPopMatrix():void
{
if (log) log.send("glPopMatrix")
currentMatrixStack.pop()
if(currentMatrixStack.length == 0) {
trace("marix stack underflow!")
currentMatrixStack.push(new Matrix3D())
}
}
public function glLoadIdentity():void
{
if (log) log.send("glLoadIdentity")
currentMatrixStack[currentMatrixStack.length - 1].identity()
}
public function glOrtho(left:Number, right:Number, bottom:Number, top:Number, zNear:Number, zFar:Number):void
{
if (log) log.send("glOrtho: left = " + left + ", right = " + right + ", bottom = " + bottom + ", top = " + top + ", zNear = " + zNear + ", zFar = " + zFar)
var tx:Number = - (right + left) / (right - left)
var ty:Number = - (top + bottom) / (top - bottom)
var tz:Number = - (zFar + zNear) / (zFar - zNear)
// in column-major order...
var m:Matrix3D = new Matrix3D( new <Number>[
2 / (right - left), 0, 0, 0,
0, 2 / (top - bottom), 0, 0,
0, 0, - 2 / ( zFar - zNear), 0,
tx, ty, tz, 1]
)
// Multiply current matrix by the ortho matrix
currentMatrixStack[currentMatrixStack.length - 1].prepend(m)
}
public function glTranslate(x:Number, y:Number, z:Number):void
{
if (log) log.send("glTranslate")
currentMatrixStack[currentMatrixStack.length - 1].prependTranslation(x, y, z)
}
public function glRotate(degrees:Number, x:Number, y:Number, z:Number):void
{
if (log) log.send("glRotate")
currentMatrixStack[currentMatrixStack.length - 1].prependRotation(degrees, new Vector3D(x, y, z))
}
public function glScale(x:Number, y:Number, z:Number):void
{
if (log) log.send("glScale")
if (x != 0 && y != 0 && z != 0)
currentMatrixStack[currentMatrixStack.length - 1].prependScale(x, y, z)
}
public function glMultMatrix(ram:ByteArray, floatArray:Boolean):void
{
if (log) log.send("glMultMatrix floatArray: " + floatArray.toString())
var v:Vector.<Number> = new Vector.<Number>(16)
for (var i:int; i < 16; i++)
v[i] = floatArray ? ram.readFloat() : ram.readDouble()
var m:Matrix3D = new Matrix3D(v)
currentMatrixStack[currentMatrixStack.length - 1].prepend(m)
}
public function multMatrix(m:Matrix3D):void
{
currentMatrixStack[currentMatrixStack.length - 1].prepend(m)
}
public function glLoadMatrix(ram:ByteArray, floatArray:Boolean):void
{
if (log) log.send("glLoadMatrix floatArray: " + floatArray.toString())
var v:Vector.<Number> = new Vector.<Number>(16)
for (var i:int; i < 16; i++)
v[i] = floatArray ? ram.readFloat() : ram.readDouble()
var m:Matrix3D = new Matrix3D(v)
currentMatrixStack[currentMatrixStack.length - 1] = m
}
public function glDepthMask(enable:Boolean):void
{
if (log) log.send("glDepthMask(" + enable + "), currently contextEnableDepth = " + contextEnableDepth)
contextDepthMask = enable
if (contextEnableDepth)
{
context.setDepthTest(contextDepthMask, contextDepthFunction)
}
}
public function glDepthFunc(mode:uint):void
{
if (log) log.send("glDepthFunc( " + COMPARE_MODE[mode - GL_NEVER] + " ), currently contextEnableDepth = " + contextEnableDepth)
contextDepthFunction = convertCompareMode(mode)
if (contextEnableDepth)
context.setDepthTest(contextDepthMask, contextDepthFunction)
}
private function convertCompareMode(mode:uint):String
{
switch (mode)
{
case GL_NEVER: return Context3DCompareMode.NEVER
case GL_LESS: return Context3DCompareMode.LESS
case GL_EQUAL: return Context3DCompareMode.EQUAL
case GL_LEQUAL: return Context3DCompareMode.LESS_EQUAL
case GL_GREATER: return Context3DCompareMode.GREATER
case GL_NOTEQUAL: return Context3DCompareMode.NOT_EQUAL
case GL_GEQUAL: return Context3DCompareMode.GREATER_EQUAL
case GL_ALWAYS: return Context3DCompareMode.ALWAYS
}
return null
}
private function texGenParamToString(param:uint):String
{
if (param < GL_NORMAL_MAP)
return GL_PARAM[param - GL_EYE_LINEAR]
else
return GL_PARAM[param - GL_NORMAL_MAP]
}
public function glTexGeni(coord:uint, pname:uint, param:uint):void
{
if (log) log.send("glTexGeni( " + GL_COORD_NAME[coord - GL_S] + ", " + GL_PARAM_NAME[pname - GL_TEXTURE_GEN_MODE] + ", " + texGenParamToString(param) + ")")
if (GL_T < coord)
{
if (log) log.send("Unsupported " + GL_COORD_NAME[coord - GL_S])
return
}
if (pname != GL_TEXTURE_GEN_MODE)
{
if (log) log.send("Unsupported " + GL_PARAM_NAME[pname - GL_TEXTURE_GEN_MODE])
return
}
switch (coord)
{
case GL_S:
texGenParamS = param
break
case GL_T:
texGenParamT = param
break
}
}
private function setupIndexBuffer(stream:VertexStream, mode:uint, count:int):void
{
var key:uint = ((mode << 20) | count)
var indexBuffer:IndexBuffer3D = sharedIndexBuffers[key]
if (!indexBuffer)
{
var indexData:Vector.<uint> = new Vector.<uint>()
generateDLIndexData(mode, count, indexData)
indexBuffer = context.createIndexBuffer(indexData.length)
indexBuffer.uploadFromVector(indexData, 0, indexData.length)
// Cache
sharedIndexBuffers[key] = indexBuffer
}
stream.indexBuffer = indexBuffer
}
private function generateDLIndexData(mode:uint, count:int, indexData:Vector.<uint>):void
{
var i:int
var p0:int
var p1:int
var p2:int
var p3:int
switch (mode)
{
case GL_QUADS:
// Assert count == n * 4, n >= 1
// for each group of 4 vertices 0, 1, 2, 3 draw two triangles 0, 1, 2 and 0, 2, 3
for (i = 0; i < count; i += 4)
{
indexData.push(i)
indexData.push(i + 1)
indexData.push(i + 2)
indexData.push(i)
indexData.push(i + 2)
indexData.push(i + 3)
}
break
case GL_QUAD_STRIP:
// Assert count == n * 2, n >= 2
// Draws a connected group of quadrilaterals. One quadrilateral is defined for each pair of vertices presented after the first pair.
// Vertices 2n - 2, 2n - 1, 2n + 1, 2n define a quadrilateral.
for (i = 0; i < count - 2; i += 2)
{
// The four corners of the quadrilateral are
p0 = i
p1 = i + 1
p2 = i + 2
p3 = i + 3
// Draw as two triangles 0, 1, 2 and 2, 1, 3
indexData.push(p0)
indexData.push(p1)
indexData.push(p2)
indexData.push(p2)
indexData.push(p1)
indexData.push(p3)
}
break
case GL_TRIANGLES:
for (i = 0; i <count; i++)
{
indexData.push(i)
}
break
case GL_TRIANGLE_STRIP:
for (i = 0; i < count - 2; i++)
{
p0 = i
p1 = i + 1
p2 = i + 2
indexData.push(p0)
if(i % 2 == 0) {
indexData.push(p1)
indexData.push(p2)
} else {
indexData.push(p2)
indexData.push(p1)
}
}
break
case GL_POLYGON:
case GL_TRIANGLE_FAN:
for (i = 0; i < count-2; i++)
{
p0 = i + 1
p1 = i + 2
indexData.push(0)
indexData.push(p0)
indexData.push(p1)
}
break
default:
if (log) log.send("Not yet implemented mode for glBegin " + BEGIN_MODE[mode])
for (i = 0; i <count; i++)
{
indexData.push(i)
}
}
}
public function glGenBuffers(count:uint, dataPtr:uint):void
{
if(count != 1)
throw "unimplemented"
vertexBufferObjects.push(null); // will be created for real by glBufferData
CModule.write32(dataPtr, vertexBufferObjects.length - 1);
}
public function glBufferData(target:uint, size:uint, dataPtr:uint, usage:uint):void
{