irrlicht/source/Irrlicht/CWebGL1Driver.cpp
cutealien 2d63fdba3d Merging r6288 through r6336 from trunk to ogl-es branch
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6337 dfc29bdd-3216-0410-991c-e03cc46cb475
2022-04-15 18:51:09 +00:00

1139 lines
37 KiB
C++

// Copyright (C) 2017 Michael Zeilfelder
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in Irrlicht.h
#include "CWebGL1Driver.h"
#ifdef _IRR_COMPILE_WITH_WEBGL1_
#include "COpenGLCoreTexture.h"
#include "COpenGLCoreRenderTarget.h"
#include "COpenGLCoreCacheHandler.h"
#include "EVertexAttributes.h"
namespace irr
{
namespace video
{
CWebGL1Driver::CWebGL1Driver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager) :
COGLES2Driver(params, io, contextManager)
, MBTriangleFanSize4(0), MBLinesSize2(0), MBPointsSize1(0)
{
#ifdef _DEBUG
setDebugName("CWebGL1Driver");
#endif
// NPOT are not allowed for WebGL in most cases.
// One can use them when:
// - The TEXTURE_MIN_FILTER is linear or nearest
// - no mipmapping is used
// - no texture wrapping is used (so all texture_wraps have to be CLAMP_TO_EDGE)
// So users could still enable them for specific cases (usually GUI), but in general better to have it off.
disableFeature(EVDF_TEXTURE_NPOT);
MBLinesSize2 = createSimpleMeshBuffer(2, scene::EPT_LINES);
MBTriangleFanSize4 = createSimpleMeshBuffer(4, scene::EPT_TRIANGLE_FAN);
MBPointsSize1 = createSimpleMeshBuffer(1, scene::EPT_POINTS);
}
CWebGL1Driver::~CWebGL1Driver()
{
if ( MBTriangleFanSize4 )
MBTriangleFanSize4->drop();
if ( MBLinesSize2 )
MBLinesSize2->drop();
if ( MBPointsSize1 )
MBPointsSize1->drop();
}
//! Returns type of video driver
E_DRIVER_TYPE CWebGL1Driver::getDriverType() const
{
return EDT_WEBGL1;
}
//! draws a vertex primitive list
void CWebGL1Driver::drawVertexPrimitiveList(const void* vertices, u32 vertexCount,
const void* indexList, u32 primitiveCount,
E_VERTEX_TYPE vType, scene::E_PRIMITIVE_TYPE pType, E_INDEX_TYPE iType)
{
if ( !vertices )
{
COGLES2Driver::drawVertexPrimitiveList(vertices, vertexCount, indexList, primitiveCount, vType, pType, iType);
}
else
{
static bool first = true;
if ( first )
{
first = false;
os::Printer::log("WebGL driver does not support drawVertexPrimitiveList calls without a VBO", ELL_WARNING);
os::Printer::log(__FILE__, irr::core::stringc(__LINE__).c_str(), ELL_WARNING);
}
}
}
//! Draws a mesh buffer
void CWebGL1Driver::drawMeshBuffer(const scene::IMeshBuffer* mb)
{
if ( mb )
{
// OK - this is bad and I hope I can find a better solution.
// Basically casting away a const which shouldn't be cast away.
// Not a nice surprise for users to see their mesh changes I guess :-(
scene::IMeshBuffer* mbUglyHack = const_cast<scene::IMeshBuffer*>(mb);
// We can't allow any buffers which are not bound to some VBO.
if ( mb->getHardwareMappingHint_Vertex() == scene::EHM_NEVER)
mbUglyHack->setHardwareMappingHint(scene::EHM_STREAM, scene::EBT_VERTEX);
if ( mb->getHardwareMappingHint_Index() == scene::EHM_NEVER)
mbUglyHack->setHardwareMappingHint(scene::EHM_STREAM, scene::EBT_INDEX);
COGLES2Driver::drawMeshBuffer(mb);
}
}
void CWebGL1Driver::draw2DImage(const video::ITexture* texture,
const core::position2d<s32>& destPos,const core::rect<s32>& sourceRect,
const core::rect<s32>* clipRect, SColor color, bool useAlphaChannelOfTexture)
{
if (!texture)
return;
if (!sourceRect.isValid())
return;
core::position2d<s32> targetPos(destPos);
core::position2d<s32> sourcePos(sourceRect.UpperLeftCorner);
core::dimension2d<s32> sourceSize(sourceRect.getSize());
if (clipRect)
{
if (targetPos.X < clipRect->UpperLeftCorner.X)
{
sourceSize.Width += targetPos.X - clipRect->UpperLeftCorner.X;
if (sourceSize.Width <= 0)
return;
sourcePos.X -= targetPos.X - clipRect->UpperLeftCorner.X;
targetPos.X = clipRect->UpperLeftCorner.X;
}
if (targetPos.X + sourceSize.Width > clipRect->LowerRightCorner.X)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - clipRect->LowerRightCorner.X;
if (sourceSize.Width <= 0)
return;
}
if (targetPos.Y < clipRect->UpperLeftCorner.Y)
{
sourceSize.Height += targetPos.Y - clipRect->UpperLeftCorner.Y;
if (sourceSize.Height <= 0)
return;
sourcePos.Y -= targetPos.Y - clipRect->UpperLeftCorner.Y;
targetPos.Y = clipRect->UpperLeftCorner.Y;
}
if (targetPos.Y + sourceSize.Height > clipRect->LowerRightCorner.Y)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - clipRect->LowerRightCorner.Y;
if (sourceSize.Height <= 0)
return;
}
}
// clip these coordinates
if (targetPos.X < 0)
{
sourceSize.Width += targetPos.X;
if (sourceSize.Width <= 0)
return;
sourcePos.X -= targetPos.X;
targetPos.X = 0;
}
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
if (targetPos.X + sourceSize.Width > (s32)renderTargetSize.Width)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - renderTargetSize.Width;
if (sourceSize.Width <= 0)
return;
}
if (targetPos.Y < 0)
{
sourceSize.Height += targetPos.Y;
if (sourceSize.Height <= 0)
return;
sourcePos.Y -= targetPos.Y;
targetPos.Y = 0;
}
if (targetPos.Y + sourceSize.Height > (s32)renderTargetSize.Height)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - renderTargetSize.Height;
if (sourceSize.Height <= 0)
return;
}
// ok, we've clipped everything.
// now draw it.
// texcoords need to be flipped horizontally for RTTs
const bool isRTT = texture->isRenderTarget();
const core::dimension2d<u32>& ss = texture->getOriginalSize();
const f32 invW = 1.f / static_cast<f32>(ss.Width);
const f32 invH = 1.f / static_cast<f32>(ss.Height);
const core::rect<f32> tcoords(
sourcePos.X * invW,
(isRTT ? (sourcePos.Y + sourceSize.Height) : sourcePos.Y) * invH,
(sourcePos.X + sourceSize.Width) * invW,
(isRTT ? sourcePos.Y : (sourcePos.Y + sourceSize.Height)) * invH);
const core::rect<s32> poss(targetPos, sourceSize);
chooseMaterial2D();
if ( !setMaterialTexture(0, texture) )
return;
setRenderStates2DMode(color.getAlpha() < 255, true, useAlphaChannelOfTexture);
lockRenderStateMode();
f32 left = (f32)poss.UpperLeftCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 right = (f32)poss.LowerRightCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 down = 2.f - (f32)poss.LowerRightCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
f32 top = 2.f - (f32)poss.UpperLeftCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBTriangleFanSize4->Vertices[0] = S3DVertex(left, top, 0, 0, 0, 1, color, tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[1] = S3DVertex(right, top, 0, 0, 0, 1, color, tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[2] = S3DVertex(right, down, 0, 0, 0, 1, color, tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->Vertices[3] = S3DVertex(left, down, 0, 0, 0, 1, color, tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
unlockRenderStateMode();
}
void CWebGL1Driver::draw2DImage(const video::ITexture* texture, const core::rect<s32>& destRect,
const core::rect<s32>& sourceRect, const core::rect<s32>* clipRect,
const video::SColor* const colors, bool useAlphaChannelOfTexture)
{
if (!texture)
return;
// texcoords need to be flipped horizontally for RTTs
const bool isRTT = texture->isRenderTarget();
const core::dimension2du& ss = texture->getOriginalSize();
const f32 invW = 1.f / static_cast<f32>(ss.Width);
const f32 invH = 1.f / static_cast<f32>(ss.Height);
const core::rect<f32> tcoords(
sourceRect.UpperLeftCorner.X * invW,
(isRTT ? sourceRect.LowerRightCorner.Y : sourceRect.UpperLeftCorner.Y) * invH,
sourceRect.LowerRightCorner.X * invW,
(isRTT ? sourceRect.UpperLeftCorner.Y : sourceRect.LowerRightCorner.Y) *invH);
const video::SColor temp[4] =
{
0xFFFFFFFF,
0xFFFFFFFF,
0xFFFFFFFF,
0xFFFFFFFF
};
const video::SColor* const useColor = colors ? colors : temp;
chooseMaterial2D();
if ( !setMaterialTexture(0, texture) )
return;
setRenderStates2DMode(useColor[0].getAlpha() < 255 || useColor[1].getAlpha() < 255 ||
useColor[2].getAlpha() < 255 || useColor[3].getAlpha() < 255,
true, useAlphaChannelOfTexture);
lockRenderStateMode();
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
bool useScissorTest = false;
if (clipRect && clipRect->isValid())
{
useScissorTest = true;
glEnable(GL_SCISSOR_TEST);
glScissor(clipRect->UpperLeftCorner.X, renderTargetSize.Height - clipRect->LowerRightCorner.Y,
clipRect->getWidth(), clipRect->getHeight());
}
f32 left = (f32)destRect.UpperLeftCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 right = (f32)destRect.LowerRightCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 down = 2.f - (f32)destRect.LowerRightCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
f32 top = 2.f - (f32)destRect.UpperLeftCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBTriangleFanSize4->Vertices[0] = S3DVertex(left, top, 0, 0, 0, 1, useColor[0], tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[1] = S3DVertex(right, top, 0, 0, 0, 1, useColor[3], tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[2] = S3DVertex(right, down, 0, 0, 0, 1, useColor[2], tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->Vertices[3] = S3DVertex(left, down, 0, 0, 0, 1, useColor[1], tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
if (useScissorTest)
glDisable(GL_SCISSOR_TEST);
unlockRenderStateMode();
testGLError();
}
void CWebGL1Driver::draw2DImageQuad(const video::ITexture* texture, u32 layer, bool flip)
{
if (!texture )
return;
chooseMaterial2D();
if ( !setMaterialTexture(0, texture) )
return;
setRenderStates2DMode(false, true, true);
lockRenderStateMode();
MBTriangleFanSize4->Vertices[0].Pos = core::vector3df(-1.f, 1.f, 0.f);
MBTriangleFanSize4->Vertices[1].Pos = core::vector3df(1.f, 1.f, 0.f);
MBTriangleFanSize4->Vertices[2].Pos = core::vector3df(1.f, -1.f, 0.f);
MBTriangleFanSize4->Vertices[3].Pos = core::vector3df(-1.f, -1.f, 0.f);
f32 modificator = (flip) ? 1.f : 0.f;
MBTriangleFanSize4->Vertices[0].TCoords = core::vector2df(0.f, 0.f + modificator);
MBTriangleFanSize4->Vertices[1].TCoords = core::vector2df(1.f, 0.f + modificator);
MBTriangleFanSize4->Vertices[2].TCoords = core::vector2df(1.f, 1.f - modificator);
MBTriangleFanSize4->Vertices[3].TCoords = core::vector2df(0.f, 1.f - modificator);
MBTriangleFanSize4->Vertices[0].Color = SColor(0xFFFFFFFF);
MBTriangleFanSize4->Vertices[1].Color = SColor(0xFFFFFFFF);
MBTriangleFanSize4->Vertices[2].Color = SColor(0xFFFFFFFF);
MBTriangleFanSize4->Vertices[3].Color = SColor(0xFFFFFFFF);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
unlockRenderStateMode();
}
void CWebGL1Driver::draw2DImageBatch(const video::ITexture* texture,
const core::position2d<s32>& pos,
const core::array<core::rect<s32> >& sourceRects,
const core::array<s32>& indices, s32 kerningWidth,
const core::rect<s32>* clipRect,
SColor color, bool useAlphaChannelOfTexture)
{
if (!texture)
return;
chooseMaterial2D();
if ( !setMaterialTexture(0, texture) )
return;
setRenderStates2DMode(color.getAlpha() < 255, true, useAlphaChannelOfTexture);
lockRenderStateMode();
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
bool useScissorTest = false;
if (clipRect && clipRect->isValid())
{
useScissorTest = true;
glEnable(GL_SCISSOR_TEST);
glScissor(clipRect->UpperLeftCorner.X, renderTargetSize.Height - clipRect->LowerRightCorner.Y,
clipRect->getWidth(), clipRect->getHeight());
}
const core::dimension2du& ss = texture->getOriginalSize();
core::position2d<s32> targetPos(pos);
// texcoords need to be flipped horizontally for RTTs
const bool isRTT = texture->isRenderTarget();
const f32 invW = 1.f / static_cast<f32>(ss.Width);
const f32 invH = 1.f / static_cast<f32>(ss.Height);
for (u32 i = 0; i < indices.size(); ++i)
{
const s32 currentIndex = indices[i];
if (!sourceRects[currentIndex].isValid())
break;
const core::rect<f32> tcoords(
sourceRects[currentIndex].UpperLeftCorner.X * invW,
(isRTT ? sourceRects[currentIndex].LowerRightCorner.Y : sourceRects[currentIndex].UpperLeftCorner.Y) * invH,
sourceRects[currentIndex].LowerRightCorner.X * invW,
(isRTT ? sourceRects[currentIndex].UpperLeftCorner.Y : sourceRects[currentIndex].LowerRightCorner.Y) * invH);
const core::rect<s32> poss(targetPos, sourceRects[currentIndex].getSize());
f32 left = (f32)poss.UpperLeftCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 right = (f32)poss.LowerRightCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 down = 2.f - (f32)poss.LowerRightCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
f32 top = 2.f - (f32)poss.UpperLeftCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBTriangleFanSize4->Vertices[0] = S3DVertex(left, top, 0, 0, 0, 1, color, tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[1] = S3DVertex(right, top, 0, 0, 0, 1, color, tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[2] = S3DVertex(right, down, 0, 0, 0, 1, color, tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->Vertices[3] = S3DVertex(left, down, 0, 0, 0, 1, color, tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
targetPos.X += sourceRects[currentIndex].getWidth();
}
if (useScissorTest)
glDisable(GL_SCISSOR_TEST);
unlockRenderStateMode();
testGLError();
}
void CWebGL1Driver::draw2DImageBatch(const video::ITexture* texture,
const core::array<core::position2d<s32> >& positions,
const core::array<core::rect<s32> >& sourceRects,
const core::rect<s32>* clipRect,
SColor color, bool useAlphaChannelOfTexture)
{
if (!texture)
return;
const irr::u32 drawCount = core::min_<u32>(positions.size(), sourceRects.size());
if ( !drawCount )
return;
chooseMaterial2D();
if ( !setMaterialTexture(0, texture) )
return;
setRenderStates2DMode(color.getAlpha() < 255, true, useAlphaChannelOfTexture);
lockRenderStateMode();
for (u32 i = 0; i < drawCount; i++)
{
core::position2d<s32> targetPos = positions[i];
core::position2d<s32> sourcePos = sourceRects[i].UpperLeftCorner;
// This needs to be signed as it may go negative.
core::dimension2d<s32> sourceSize(sourceRects[i].getSize());
if (clipRect)
{
if (targetPos.X < clipRect->UpperLeftCorner.X)
{
sourceSize.Width += targetPos.X - clipRect->UpperLeftCorner.X;
if (sourceSize.Width <= 0)
continue;
sourcePos.X -= targetPos.X - clipRect->UpperLeftCorner.X;
targetPos.X = clipRect->UpperLeftCorner.X;
}
if (targetPos.X + (s32)sourceSize.Width > clipRect->LowerRightCorner.X)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - clipRect->LowerRightCorner.X;
if (sourceSize.Width <= 0)
continue;
}
if (targetPos.Y < clipRect->UpperLeftCorner.Y)
{
sourceSize.Height += targetPos.Y - clipRect->UpperLeftCorner.Y;
if (sourceSize.Height <= 0)
continue;
sourcePos.Y -= targetPos.Y - clipRect->UpperLeftCorner.Y;
targetPos.Y = clipRect->UpperLeftCorner.Y;
}
if (targetPos.Y + (s32)sourceSize.Height > clipRect->LowerRightCorner.Y)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - clipRect->LowerRightCorner.Y;
if (sourceSize.Height <= 0)
continue;
}
}
// clip these coordinates
if (targetPos.X < 0)
{
sourceSize.Width += targetPos.X;
if (sourceSize.Width <= 0)
continue;
sourcePos.X -= targetPos.X;
targetPos.X = 0;
}
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
if (targetPos.X + sourceSize.Width > (s32)renderTargetSize.Width)
{
sourceSize.Width -= (targetPos.X + sourceSize.Width) - renderTargetSize.Width;
if (sourceSize.Width <= 0)
continue;
}
if (targetPos.Y < 0)
{
sourceSize.Height += targetPos.Y;
if (sourceSize.Height <= 0)
continue;
sourcePos.Y -= targetPos.Y;
targetPos.Y = 0;
}
if (targetPos.Y + sourceSize.Height > (s32)renderTargetSize.Height)
{
sourceSize.Height -= (targetPos.Y + sourceSize.Height) - renderTargetSize.Height;
if (sourceSize.Height <= 0)
continue;
}
// ok, we've clipped everything.
// now draw it.
core::rect<f32> tcoords;
tcoords.UpperLeftCorner.X = (((f32)sourcePos.X)) / texture->getOriginalSize().Width ;
tcoords.UpperLeftCorner.Y = (((f32)sourcePos.Y)) / texture->getOriginalSize().Height;
tcoords.LowerRightCorner.X = tcoords.UpperLeftCorner.X + ((f32)(sourceSize.Width) / texture->getOriginalSize().Width);
tcoords.LowerRightCorner.Y = tcoords.UpperLeftCorner.Y + ((f32)(sourceSize.Height) / texture->getOriginalSize().Height);
const core::rect<s32> poss(targetPos, sourceSize);
f32 left = (f32)poss.UpperLeftCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 right = (f32)poss.LowerRightCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 down = 2.f - (f32)poss.LowerRightCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
f32 top = 2.f - (f32)poss.UpperLeftCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBTriangleFanSize4->Vertices[0] = S3DVertex(left, top, 0, 0, 0, 1, color, tcoords.UpperLeftCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[1] = S3DVertex(right, top, 0, 0, 0, 1, color, tcoords.LowerRightCorner.X, tcoords.UpperLeftCorner.Y);
MBTriangleFanSize4->Vertices[2] = S3DVertex(right, down, 0, 0, 0, 1, color, tcoords.LowerRightCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->Vertices[3] = S3DVertex(left, down, 0, 0, 0, 1, color, tcoords.UpperLeftCorner.X, tcoords.LowerRightCorner.Y);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
}
unlockRenderStateMode();
}
//! draw a 2d rectangle
void CWebGL1Driver::draw2DRectangle(SColor color,
const core::rect<s32>& position,
const core::rect<s32>* clip)
{
chooseMaterial2D();
setMaterialTexture(0, 0);
setRenderStates2DMode(color.getAlpha() < 255, false, false);
lockRenderStateMode();
core::rect<s32> pos = position;
if (clip)
pos.clipAgainst(*clip);
if (!pos.isValid())
return;
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
f32 left = (f32)pos.UpperLeftCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 right = (f32)pos.LowerRightCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 down = 2.f - (f32)pos.LowerRightCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
f32 top = 2.f - (f32)pos.UpperLeftCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBTriangleFanSize4->Vertices[0] = S3DVertex(left, top, 0, 0, 0, 1, color, 0, 0);
MBTriangleFanSize4->Vertices[1] = S3DVertex(right, top, 0, 0, 0, 1, color, 0, 0);
MBTriangleFanSize4->Vertices[2] = S3DVertex(right, down, 0, 0, 0, 1, color, 0, 0);
MBTriangleFanSize4->Vertices[3] = S3DVertex(left, down, 0, 0, 0, 1, color, 0, 0);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
unlockRenderStateMode();
}
void CWebGL1Driver::draw2DRectangle(const core::rect<s32>& position,
SColor colorLeftUp, SColor colorRightUp, SColor colorLeftDown, SColor colorRightDown,
const core::rect<s32>* clip)
{
core::rect<s32> pos = position;
if (clip)
pos.clipAgainst(*clip);
if (!pos.isValid())
return;
chooseMaterial2D();
setMaterialTexture(0, 0);
setRenderStates2DMode(colorLeftUp.getAlpha() < 255 ||
colorRightUp.getAlpha() < 255 ||
colorLeftDown.getAlpha() < 255 ||
colorRightDown.getAlpha() < 255, false, false);
lockRenderStateMode();
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
f32 left = (f32)pos.UpperLeftCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 right = (f32)pos.LowerRightCorner.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 down = 2.f - (f32)pos.LowerRightCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
f32 top = 2.f - (f32)pos.UpperLeftCorner.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBTriangleFanSize4->Vertices[0] = S3DVertex(left, top, 0, 0, 0, 1, colorLeftUp, 0, 0);
MBTriangleFanSize4->Vertices[1] = S3DVertex(right, top, 0, 0, 0, 1, colorRightUp, 0, 0);
MBTriangleFanSize4->Vertices[2] = S3DVertex(right, down, 0, 0, 0, 1, colorRightDown, 0, 0);
MBTriangleFanSize4->Vertices[3] = S3DVertex(left, down, 0, 0, 0, 1, colorLeftDown, 0, 0);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
unlockRenderStateMode();
}
//! Draws a 2d line.
void CWebGL1Driver::draw2DLine(const core::position2d<s32>& start, const core::position2d<s32>& end, SColor color)
{
if (start==end)
drawPixel(start.X, start.Y, color);
else
{
chooseMaterial2D();
setMaterialTexture(0, 0);
setRenderStates2DMode(color.getAlpha() < 255, false, false);
lockRenderStateMode();
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
f32 startX = (f32)start.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 endX = (f32)end.X / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 startY = 2.f - (f32)start.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
f32 endY = 2.f - (f32)end.Y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBLinesSize2->Vertices[0] = S3DVertex(startX, startY, 0, 0, 0, 1, color, 0, 0);
MBLinesSize2->Vertices[1] = S3DVertex(endX, endY, 0, 0, 0, 1, color, 1, 1);
MBLinesSize2->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBLinesSize2);
unlockRenderStateMode();
}
}
void CWebGL1Driver::drawPixel(u32 x, u32 y, const SColor & color)
{
const core::dimension2d<u32>& renderTargetSize = getCurrentRenderTargetSize();
if (x > (u32)renderTargetSize.Width || y > (u32)renderTargetSize.Height)
return;
chooseMaterial2D();
setMaterialTexture(0, 0);
setRenderStates2DMode(color.getAlpha() < 255, false, false);
lockRenderStateMode();
f32 X = (f32)x / (f32)renderTargetSize.Width * 2.f - 1.f;
f32 Y = 2.f - (f32)y / (f32)renderTargetSize.Height * 2.f - 1.f;
MBPointsSize1->Vertices[0] = S3DVertex(X, Y, 0, 0, 0, 1, color, 0, 0);
MBPointsSize1->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBPointsSize1);
unlockRenderStateMode();
}
void CWebGL1Driver::draw3DLine(const core::vector3df& start, const core::vector3df& end, SColor color)
{
MBLinesSize2->Vertices[0] = S3DVertex(start.X, start.Y, start.Z, 0, 0, 1, color, 0, 0);
MBLinesSize2->Vertices[1] = S3DVertex(end.X, end.Y, end.Z, 0, 0, 1, color, 0, 0);
MBLinesSize2->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBLinesSize2);
}
void CWebGL1Driver::drawStencilShadowVolume(const core::array<core::vector3df>& triangles, bool zfail, u32 debugDataVisible)
{
static bool first = true;
if ( first )
{
first = false;
os::Printer::log("WebGL1 driver does not yet support drawStencilShadowVolume", ELL_WARNING);
os::Printer::log(__FILE__, irr::core::stringc(__LINE__).c_str(), ELL_WARNING);
}
}
void CWebGL1Driver::drawStencilShadow(bool clearStencilBuffer,
video::SColor leftUpEdge,
video::SColor rightUpEdge,
video::SColor leftDownEdge,
video::SColor rightDownEdge)
{
// NOTE: Might work, but untested as drawStencilShadowVolume is not yet supported.
if (!StencilBuffer)
return;
chooseMaterial2D();
setMaterialTexture(0, 0);
setRenderStates2DMode(true, false, false);
lockRenderStateMode();
CacheHandler->setDepthMask(false);
CacheHandler->setColorMask(ECP_ALL);
CacheHandler->setBlend(true);
CacheHandler->setBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_STENCIL_TEST);
glStencilFunc(GL_NOTEQUAL, 0, ~0);
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
MBTriangleFanSize4->Vertices[0] = S3DVertex(-1.f, 1.f, 0.9f, 0, 0, 1, leftDownEdge, 0, 0);
MBTriangleFanSize4->Vertices[1] = S3DVertex(1.f, 1.f, 0.9f, 0, 0, 1, leftUpEdge, 0, 0);
MBTriangleFanSize4->Vertices[2] = S3DVertex(1.f, -1.f, 0.9f, 0, 0, 1, rightUpEdge, 0, 0);
MBTriangleFanSize4->Vertices[3] = S3DVertex(-1.f, -1.f, 0.9f, 0, 0, 1, rightDownEdge, 0, 0);
MBTriangleFanSize4->setDirty(scene::EBT_VERTEX);
drawMeshBuffer(MBTriangleFanSize4);
unlockRenderStateMode();
if (clearStencilBuffer)
glClear(GL_STENCIL_BUFFER_BIT);
glDisable(GL_STENCIL_TEST);
}
GLenum CWebGL1Driver::getZBufferBits() const
{
// TODO: Never used, so not sure what this was really about (zbuffer used by device? Or for RTT's?)
// If it's about device it might need a check like: GLint depthBits; glGetIntegerv(GL_DEPTH_BITS, &depthBits);
// If it's about textures it might need a check for IRR_WEBGL_depth_texture
GLenum bits = 0;
switch (Params.ZBufferBits)
{
#if defined(GL_OES_depth24)
case 24:
bits = GL_DEPTH_COMPONENT24_OES;
break;
#endif
#if defined(GL_OES_depth32)
case 32:
bits = GL_DEPTH_COMPONENT32_OES;
break;
#endif
default:
bits = GL_DEPTH_COMPONENT16_OES;
break;
}
return bits;
}
bool CWebGL1Driver::getColorFormatParameters(ECOLOR_FORMAT format, GLint& internalFormat, GLenum& pixelFormat,
GLenum& pixelType, void(**converter)(const void*, s32, void*)) const
{
bool supported = false;
pixelFormat = GL_RGBA;
pixelType = GL_UNSIGNED_BYTE;
*converter = 0;
switch (format)
{
case ECF_A1R5G5B5:
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_UNSIGNED_SHORT_5_5_5_1;
*converter = CColorConverter::convert_A1R5G5B5toR5G5B5A1;
break;
case ECF_R5G6B5:
supported = true;
pixelFormat = GL_RGB;
pixelType = GL_UNSIGNED_SHORT_5_6_5;
break;
case ECF_R8G8B8:
supported = true;
pixelFormat = GL_RGB;
pixelType = GL_UNSIGNED_BYTE;
break;
case ECF_A8R8G8B8:
// WebGL doesn't seem to support GL_BGRA so we always convert
supported = true;
pixelFormat = GL_RGBA;
*converter = CColorConverter::convert_A8R8G8B8toA8B8G8R8;
pixelType = GL_UNSIGNED_BYTE;
break;
#ifdef GL_EXT_texture_compression_dxt1
case ECF_DXT1:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_s3tc) )
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
}
break;
#endif
#ifdef GL_EXT_texture_compression_s3tc
case ECF_DXT2:
case ECF_DXT3:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_s3tc) )
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT;
}
break;
#endif
#ifdef GL_EXT_texture_compression_s3tc
case ECF_DXT4:
case ECF_DXT5:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_s3tc) )
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
}
break;
#endif
#ifdef GL_IMG_texture_compression_pvrtc
case ECF_PVRTC_RGB2:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_pvrtc) )
{
supported = true;
pixelFormat = GL_RGB;
pixelType = GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
}
break;
#endif
#ifdef GL_IMG_texture_compression_pvrtc
case ECF_PVRTC_ARGB2:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_pvrtc) )
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
}
break;
#endif
#ifdef GL_IMG_texture_compression_pvrtc
case ECF_PVRTC_RGB4:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_pvrtc) )
{
supported = true;
pixelFormat = GL_RGB;
pixelType = GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
}
break;
#endif
#ifdef GL_IMG_texture_compression_pvrtc
case ECF_PVRTC_ARGB4:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_pvrtc) )
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
}
break;
#endif
#ifdef GL_IMG_texture_compression_pvrtc2
case ECF_PVRTC2_ARGB2:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_pvrtc) )
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG;
}
break;
#endif
#ifdef GL_IMG_texture_compression_pvrtc2
case ECF_PVRTC2_ARGB4:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_pvrtc) )
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG;
}
break;
#endif
#ifdef GL_OES_compressed_ETC1_RGB8_texture
case ECF_ETC1:
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_compressed_texture_etc1) )
{
supported = true;
pixelFormat = GL_RGB;
pixelType = GL_ETC1_RGB8_OES;
}
break;
#endif
#ifdef GL_ES_VERSION_3_0 // TO-DO - fix when extension name will be available
case ECF_ETC2_RGB:
supported = true;
pixelFormat = GL_RGB;
pixelType = GL_COMPRESSED_RGB8_ETC2;
break;
#endif
#ifdef GL_ES_VERSION_3_0 // TO-DO - fix when extension name will be available
case ECF_ETC2_ARGB:
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_COMPRESSED_RGBA8_ETC2_EAC;
break;
#endif
case ECF_D16:
if (WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_depth_texture))
{
supported = true;
pixelFormat = GL_DEPTH_COMPONENT;
pixelType = GL_UNSIGNED_SHORT;
}
break;
case ECF_D32:
if (WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_depth_texture))
{
// NOTE: There is still no guarantee it will return a 32 bit depth buffer. It might convert stuff internally to 16 bit :-(
supported = true;
pixelFormat = GL_DEPTH_COMPONENT;
pixelType = GL_UNSIGNED_INT;
}
break;
case ECF_D24S8:
if (WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_WEBGL_depth_texture))
{
supported = true;
pixelFormat = 0x84F9; // GL_DEPTH_STENCIL
pixelType = 0x84FA; // UNSIGNED_INT_24_8_WEBGL
}
break;
case ECF_R8:
// Does not seem to be supported in WebGL so far (missing GL_EXT_texture_rg)
break;
case ECF_R8G8:
// Does not seem to be supported in WebGL so far (missing GL_EXT_texture_rg)
break;
case ECF_R16:
// Does not seem to be supported in WebGL so far
break;
case ECF_R16G16:
// Does not seem to be supported in WebGL so far
break;
case ECF_R16F:
// Does not seem to be supported in WebGL so far (missing GL_EXT_texture_rg)
break;
case ECF_G16R16F:
// Does not seem to be supported in WebGL so far (missing GL_EXT_texture_rg)
break;
case ECF_A16B16G16R16F:
#if defined(GL_OES_texture_half_float)
if (WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_OES_texture_half_float))
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_HALF_FLOAT_OES ;
}
#endif
break;
case ECF_R32F:
// Does not seem to be supported in WebGL so far (missing GL_EXT_texture_rg)
break;
case ECF_G32R32F:
// Does not seem to be supported in WebGL so far (missing GL_EXT_texture_rg)
break;
case ECF_A32B32G32R32F:
#if defined(GL_OES_texture_float)
if (WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_OES_texture_half_float))
{
supported = true;
pixelFormat = GL_RGBA;
pixelType = GL_FLOAT ;
}
#endif
break;
default:
break;
}
// ES 2.0 says internalFormat must match pixelFormat (chapter 3.7.1 in Spec).
// Doesn't mention if "match" means "equal" or some other way of matching, but
// some bug on Emscripten and browsing discussions by others lead me to believe
// it means they have to be equal. Note that this was different in OpenGL.
internalFormat = pixelFormat;
return supported;
}
scene::SMeshBuffer* CWebGL1Driver::createSimpleMeshBuffer(irr::u32 numVertices, scene::E_PRIMITIVE_TYPE primitiveType, scene::E_HARDWARE_MAPPING vertexMappingHint, scene::E_HARDWARE_MAPPING indexMappingHint) const
{
scene::SMeshBuffer* mbResult = new scene::SMeshBuffer();
mbResult->Vertices.set_used(numVertices);
mbResult->Indices.set_used(numVertices);
for ( irr::u32 i=0; i < numVertices; ++i )
mbResult->Indices[i] = i;
mbResult->setPrimitiveType(primitiveType);
mbResult->setHardwareMappingHint(vertexMappingHint, scene::EBT_VERTEX);
mbResult->setHardwareMappingHint(indexMappingHint, scene::EBT_INDEX);
mbResult->setDirty();
return mbResult;
}
bool CWebGL1Driver::genericDriverInit(const core::dimension2d<u32>& screenSize, bool stencilBuffer)
{
Name = glGetString(GL_VERSION);
printVersion();
// print renderer information
VendorName = glGetString(GL_VENDOR);
os::Printer::log(VendorName.c_str(), ELL_INFORMATION);
// load extensions
initWebGLExtensions();
// reset cache handler
delete CacheHandler;
CacheHandler = new COGLES2CacheHandler(this);
StencilBuffer = stencilBuffer;
DriverAttributes->setAttribute("MaxTextures", (s32)Feature.MaxTextureUnits);
DriverAttributes->setAttribute("MaxSupportedTextures", (s32)Feature.MaxTextureUnits);
DriverAttributes->setAttribute("MaxAnisotropy", MaxAnisotropy);
DriverAttributes->setAttribute("MaxIndices", (s32)MaxIndices);
DriverAttributes->setAttribute("MaxTextureSize", (s32)MaxTextureSize);
DriverAttributes->setAttribute("MaxTextureLODBias", MaxTextureLODBias);
DriverAttributes->setAttribute("Version", Version);
DriverAttributes->setAttribute("AntiAlias", AntiAlias);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
UserClipPlane.reallocate(0);
for (s32 i = 0; i < ETS_COUNT; ++i)
setTransform(static_cast<E_TRANSFORMATION_STATE>(i), core::IdentityMatrix);
setAmbientLight(SColorf(0.0f, 0.0f, 0.0f, 0.0f));
glClearDepthf(1.0f);
glHint(GL_GENERATE_MIPMAP_HINT, GL_NICEST);
glFrontFace(GL_CW);
// create material renderers
createMaterialRenderers();
// set the renderstates
setRenderStates3DMode();
// set fog mode
setFog(FogColor, FogType, FogStart, FogEnd, FogDensity, PixelFog, RangeFog);
// create matrix for flipping textures
TextureFlipMatrix.buildTextureTransform(0.0f, core::vector2df(0, 0), core::vector2df(0, 1.0f), core::vector2df(1.0f, -1.0f));
// We need to reset once more at the beginning of the first rendering.
// This fixes problems with intermediate changes to the material during texture load.
ResetRenderStates = true;
testGLError(__LINE__);
return true;
}
void CWebGL1Driver::initWebGLExtensions()
{
// Stuff still a little bit hacky as we derive from ES2Driver with it's own extensions.
// We only get the feature-strings from WebGLExtensions.
getGLVersion();
WebGLExtensions.getGLExtensions();
// TODO: basically copied ES2 implementation, so not certain if 100% correct for WebGL
GLint val=0;
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &val);
Feature.MaxTextureUnits = static_cast<u8>(val);
#ifdef GL_EXT_texture_filter_anisotropic
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_EXT_texture_filter_anisotropic) )
{
glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &val);
MaxAnisotropy = static_cast<u8>(val);
}
#endif
if ( WebGLExtensions.queryWebGLFeature(CWebGLExtensionHandler::IRR_OES_element_index_uint) ) // note: WebGL2 won't need extension as that got default there
{
MaxIndices=0xffffffff;
}
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &val);
MaxTextureSize=static_cast<u32>(val);
#ifdef GL_MAX_TEXTURE_LOD_BIAS_EXT
// TODO: Found no info about this anywhere. It's no extension in WebGL
// and GL_MAX_TEXTURE_LOD_BIAS_EXT doesn't seem to be part of gl2ext.h in emscripten
glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS_EXT, &MaxTextureLODBias);
#endif
glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);
glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);
Feature.MaxTextureUnits = core::min_(Feature.MaxTextureUnits, static_cast<u8>(MATERIAL_MAX_TEXTURES));
Feature.MaxTextureUnits = core::min_(Feature.MaxTextureUnits, static_cast<u8>(MATERIAL_MAX_TEXTURES_USED));
Feature.ColorAttachment = 1;
}
} // end namespace video
} // end namespace irr
#endif // _IRR_COMPILE_WITH_WEBGL1_
namespace irr
{
#ifndef _IRR_COMPILE_WITH_WEBGL1_
namespace io
{
class IFileSystem;
}
#endif
namespace video
{
#ifndef _IRR_COMPILE_WITH_WEBGL1_
class IVideoDriver;
class IContextManager;
#endif
IVideoDriver* createWebGL1Driver(const SIrrlichtCreationParameters& params, io::IFileSystem* io, IContextManager* contextManager)
{
#ifdef _IRR_COMPILE_WITH_WEBGL1_
CWebGL1Driver* driver = new CWebGL1Driver(params, io, contextManager);
driver->genericDriverInit(params.WindowSize, params.Stencilbuffer); // don't call in constructor, it uses virtual function calls of driver
return driver;
#else
return 0;
#endif // _IRR_COMPILE_WITH_WEBGL1_
}
} // end namespace
} // end namespace