mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 14:15:30 +00:00
387 lines
11 KiB
C++
387 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "RadialGradientEffectD2D1.h"
|
|
|
|
#include "Logging.h"
|
|
|
|
#include "ShadersD2D1.h"
|
|
#include "HelpersD2D.h"
|
|
|
|
#include <vector>
|
|
|
|
#define TEXTW(x) L##x
|
|
#define XML(X) TEXTW(#X) // This macro creates a single string from multiple lines of text.
|
|
|
|
static const PCWSTR kXmlDescription =
|
|
XML(
|
|
<?xml version='1.0'?>
|
|
<Effect>
|
|
<!-- System Properties -->
|
|
<Property name='DisplayName' type='string' value='RadialGradientEffect'/>
|
|
<Property name='Author' type='string' value='Mozilla'/>
|
|
<Property name='Category' type='string' value='Pattern effects'/>
|
|
<Property name='Description' type='string' value='This effect is used to render radial gradients in a manner compliant with the 2D Canvas specification.'/>
|
|
<Inputs>
|
|
<Input name='Geometry'/>
|
|
</Inputs>
|
|
<Property name='StopCollection' type='iunknown'>
|
|
<Property name='DisplayName' type='string' value='Gradient stop collection'/>
|
|
</Property>
|
|
<Property name='Center1' type='vector2'>
|
|
<Property name='DisplayName' type='string' value='Inner circle center'/>
|
|
</Property>
|
|
<Property name='Center2' type='vector2'>
|
|
<Property name='DisplayName' type='string' value='Outer circle center'/>
|
|
</Property>
|
|
<Property name='Radius1' type='float'>
|
|
<Property name='DisplayName' type='string' value='Inner circle radius'/>
|
|
</Property>
|
|
<Property name='Radius2' type='float'>
|
|
<Property name='DisplayName' type='string' value='Outer circle radius'/>
|
|
</Property>
|
|
<Property name='Transform' type='matrix3x2'>
|
|
<Property name='DisplayName' type='string' value='Transform applied to the pattern'/>
|
|
</Property>
|
|
|
|
</Effect>
|
|
);
|
|
|
|
// {FB947CDA-718E-40CC-AE7B-D255830D7D14}
|
|
DEFINE_GUID(GUID_SampleRadialGradientPS,
|
|
0xfb947cda, 0x718e, 0x40cc, 0xae, 0x7b, 0xd2, 0x55, 0x83, 0xd, 0x7d, 0x14);
|
|
// {2C468128-6546-453C-8E25-F2DF0DE10A0F}
|
|
DEFINE_GUID(GUID_SampleRadialGradientA0PS,
|
|
0x2c468128, 0x6546, 0x453c, 0x8e, 0x25, 0xf2, 0xdf, 0xd, 0xe1, 0xa, 0xf);
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
RadialGradientEffectD2D1::RadialGradientEffectD2D1()
|
|
: mRefCount(0)
|
|
, mCenter1(D2D1::Vector2F(0, 0))
|
|
, mCenter2(D2D1::Vector2F(0, 0))
|
|
, mRadius1(0)
|
|
, mRadius2(0)
|
|
, mTransform(D2D1::IdentityMatrix())
|
|
|
|
{
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::Initialize(ID2D1EffectContext* pContextInternal, ID2D1TransformGraph* pTransformGraph)
|
|
{
|
|
HRESULT hr;
|
|
|
|
hr = pContextInternal->LoadPixelShader(GUID_SampleRadialGradientPS, SampleRadialGradientPS, sizeof(SampleRadialGradientPS));
|
|
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
hr = pContextInternal->LoadPixelShader(GUID_SampleRadialGradientA0PS, SampleRadialGradientA0PS, sizeof(SampleRadialGradientA0PS));
|
|
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
hr = pTransformGraph->SetSingleTransformNode(this);
|
|
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
mEffectContext = pContextInternal;
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::PrepareForRender(D2D1_CHANGE_TYPE changeType)
|
|
{
|
|
if (changeType == D2D1_CHANGE_TYPE_NONE) {
|
|
return S_OK;
|
|
}
|
|
|
|
// We'll need to inverse transform our pixel, precompute inverse here.
|
|
Matrix mat = ToMatrix(mTransform);
|
|
if (!mat.Invert()) {
|
|
// Singular
|
|
return S_OK;
|
|
}
|
|
|
|
if (!mStopCollection) {
|
|
return S_OK;
|
|
}
|
|
|
|
D2D1_POINT_2F dc = D2D1::Point2F(mCenter2.x - mCenter1.x, mCenter2.y - mCenter2.y);
|
|
float dr = mRadius2 - mRadius1;
|
|
float A = dc.x * dc.x + dc.y * dc.y - dr * dr;
|
|
|
|
HRESULT hr;
|
|
|
|
if (A == 0) {
|
|
hr = mDrawInfo->SetPixelShader(GUID_SampleRadialGradientA0PS);
|
|
} else {
|
|
hr = mDrawInfo->SetPixelShader(GUID_SampleRadialGradientPS);
|
|
}
|
|
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
RefPtr<ID2D1ResourceTexture> tex = CreateGradientTexture();
|
|
hr = mDrawInfo->SetResourceTexture(1, tex);
|
|
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
struct PSConstantBuffer
|
|
{
|
|
float diff[3];
|
|
float padding;
|
|
float center1[2];
|
|
float A;
|
|
float radius1;
|
|
float sq_radius1;
|
|
float padding2[3];
|
|
float transform[8];
|
|
};
|
|
|
|
PSConstantBuffer buffer = { { dc.x, dc.y, dr }, 0,
|
|
{ mCenter1.x, mCenter1.y },
|
|
A, mRadius1, mRadius1 * mRadius1,
|
|
{ 0, 0, 0 }, { mat._11, mat._21, mat._31, 0,
|
|
mat._12, mat._22, mat._32, 0 } };
|
|
|
|
hr = mDrawInfo->SetPixelShaderConstantBuffer((BYTE*)&buffer, sizeof(buffer));
|
|
|
|
if (FAILED(hr)) {
|
|
return hr;
|
|
}
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::SetGraph(ID2D1TransformGraph* pGraph)
|
|
{
|
|
return pGraph->SetSingleTransformNode(this);
|
|
}
|
|
|
|
IFACEMETHODIMP_(ULONG)
|
|
RadialGradientEffectD2D1::AddRef()
|
|
{
|
|
return ++mRefCount;
|
|
}
|
|
|
|
IFACEMETHODIMP_(ULONG)
|
|
RadialGradientEffectD2D1::Release()
|
|
{
|
|
if (!--mRefCount) {
|
|
delete this;
|
|
return 0;
|
|
}
|
|
return mRefCount;
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::QueryInterface(const IID &aIID, void **aPtr)
|
|
{
|
|
if (!aPtr) {
|
|
return E_POINTER;
|
|
}
|
|
|
|
if (aIID == IID_IUnknown) {
|
|
*aPtr = static_cast<IUnknown*>(static_cast<ID2D1EffectImpl*>(this));
|
|
} else if (aIID == IID_ID2D1EffectImpl) {
|
|
*aPtr = static_cast<ID2D1EffectImpl*>(this);
|
|
} else if (aIID == IID_ID2D1DrawTransform) {
|
|
*aPtr = static_cast<ID2D1DrawTransform*>(this);
|
|
} else if (aIID == IID_ID2D1Transform) {
|
|
*aPtr = static_cast<ID2D1Transform*>(this);
|
|
} else if (aIID == IID_ID2D1TransformNode) {
|
|
*aPtr = static_cast<ID2D1TransformNode*>(this);
|
|
} else {
|
|
return E_NOINTERFACE;
|
|
}
|
|
|
|
static_cast<IUnknown*>(*aPtr)->AddRef();
|
|
return S_OK;
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::MapInputRectsToOutputRect(const D2D1_RECT_L* pInputRects,
|
|
const D2D1_RECT_L* pInputOpaqueSubRects,
|
|
UINT32 inputRectCount,
|
|
D2D1_RECT_L* pOutputRect,
|
|
D2D1_RECT_L* pOutputOpaqueSubRect)
|
|
{
|
|
if (inputRectCount != 1) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
*pOutputRect = *pInputRects;
|
|
*pOutputOpaqueSubRect = *pInputOpaqueSubRects;
|
|
return S_OK;
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::MapOutputRectToInputRects(const D2D1_RECT_L* pOutputRect,
|
|
D2D1_RECT_L* pInputRects,
|
|
UINT32 inputRectCount) const
|
|
{
|
|
if (inputRectCount != 1) {
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
*pInputRects = *pOutputRect;
|
|
return S_OK;
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::MapInvalidRect(UINT32 inputIndex,
|
|
D2D1_RECT_L invalidInputRect,
|
|
D2D1_RECT_L* pInvalidOutputRect) const
|
|
{
|
|
MOZ_ASSERT(inputIndex = 0);
|
|
|
|
*pInvalidOutputRect = invalidInputRect;
|
|
return S_OK;
|
|
}
|
|
|
|
IFACEMETHODIMP
|
|
RadialGradientEffectD2D1::SetDrawInfo(ID2D1DrawInfo *pDrawInfo)
|
|
{
|
|
mDrawInfo = pDrawInfo;
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
RadialGradientEffectD2D1::Register(ID2D1Factory1 *aFactory)
|
|
{
|
|
D2D1_PROPERTY_BINDING bindings[] = {
|
|
D2D1_VALUE_TYPE_BINDING(L"StopCollection", &RadialGradientEffectD2D1::SetStopCollection,
|
|
&RadialGradientEffectD2D1::GetStopCollection),
|
|
D2D1_VALUE_TYPE_BINDING(L"Center1", &RadialGradientEffectD2D1::SetCenter1, &RadialGradientEffectD2D1::GetCenter1),
|
|
D2D1_VALUE_TYPE_BINDING(L"Center2", &RadialGradientEffectD2D1::SetCenter2, &RadialGradientEffectD2D1::GetCenter2),
|
|
D2D1_VALUE_TYPE_BINDING(L"Radius1", &RadialGradientEffectD2D1::SetRadius1, &RadialGradientEffectD2D1::GetRadius1),
|
|
D2D1_VALUE_TYPE_BINDING(L"Radius2", &RadialGradientEffectD2D1::SetRadius2, &RadialGradientEffectD2D1::GetRadius2),
|
|
D2D1_VALUE_TYPE_BINDING(L"Transform", &RadialGradientEffectD2D1::SetTransform, &RadialGradientEffectD2D1::GetTransform)
|
|
};
|
|
HRESULT hr = aFactory->RegisterEffectFromString(CLSID_RadialGradientEffect, kXmlDescription, bindings, ARRAYSIZE(bindings), CreateEffect);
|
|
|
|
if (FAILED(hr)) {
|
|
gfxWarning() << "Failed to register radial gradient effect.";
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
HRESULT __stdcall
|
|
RadialGradientEffectD2D1::CreateEffect(IUnknown **aEffectImpl)
|
|
{
|
|
*aEffectImpl = static_cast<ID2D1EffectImpl*>(new RadialGradientEffectD2D1());
|
|
(*aEffectImpl)->AddRef();
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT
|
|
RadialGradientEffectD2D1::SetStopCollection(IUnknown *aStopCollection)
|
|
{
|
|
if (SUCCEEDED(aStopCollection->QueryInterface((ID2D1GradientStopCollection**)byRef(mStopCollection)))) {
|
|
return S_OK;
|
|
}
|
|
|
|
return E_INVALIDARG;
|
|
}
|
|
|
|
TemporaryRef<ID2D1ResourceTexture>
|
|
RadialGradientEffectD2D1::CreateGradientTexture()
|
|
{
|
|
std::vector<D2D1_GRADIENT_STOP> rawStops;
|
|
rawStops.resize(mStopCollection->GetGradientStopCount());
|
|
mStopCollection->GetGradientStops(&rawStops.front(), rawStops.size());
|
|
|
|
std::vector<unsigned char> textureData;
|
|
textureData.resize(4096 * 4);
|
|
unsigned char *texData = &textureData.front();
|
|
|
|
float prevColorPos = 0;
|
|
float nextColorPos = 1.0f;
|
|
D2D1_COLOR_F prevColor = rawStops[0].color;
|
|
D2D1_COLOR_F nextColor = prevColor;
|
|
|
|
if (rawStops.size() >= 2) {
|
|
nextColor = rawStops[1].color;
|
|
nextColorPos = rawStops[1].position;
|
|
}
|
|
|
|
uint32_t stopPosition = 2;
|
|
|
|
// Not the most optimized way but this will do for now.
|
|
for (int i = 0; i < 4096; i++) {
|
|
// The 4095 seems a little counter intuitive, but we want the gradient
|
|
// color at offset 0 at the first pixel, and at offset 1.0f at the last
|
|
// pixel.
|
|
float pos = float(i) / 4095;
|
|
|
|
while (pos > nextColorPos) {
|
|
prevColor = nextColor;
|
|
prevColorPos = nextColorPos;
|
|
if (rawStops.size() > stopPosition) {
|
|
nextColor = rawStops[stopPosition].color;
|
|
nextColorPos = rawStops[stopPosition++].position;
|
|
} else {
|
|
nextColorPos = 1.0f;
|
|
}
|
|
}
|
|
|
|
float interp;
|
|
|
|
if (nextColorPos != prevColorPos) {
|
|
interp = (pos - prevColorPos) / (nextColorPos - prevColorPos);
|
|
} else {
|
|
interp = 0;
|
|
}
|
|
|
|
Color newColor(prevColor.r + (nextColor.r - prevColor.r) * interp,
|
|
prevColor.g + (nextColor.g - prevColor.g) * interp,
|
|
prevColor.b + (nextColor.b - prevColor.b) * interp,
|
|
prevColor.a + (nextColor.a - prevColor.a) * interp);
|
|
|
|
// Note D2D expects RGBA here!!
|
|
texData[i * 4] = (char)(255.0f * newColor.r);
|
|
texData[i * 4 + 1] = (char)(255.0f * newColor.g);
|
|
texData[i * 4 + 2] = (char)(255.0f * newColor.b);
|
|
texData[i * 4 + 3] = (char)(255.0f * newColor.a);
|
|
}
|
|
|
|
RefPtr<ID2D1ResourceTexture> tex;
|
|
|
|
UINT32 width = 4096;
|
|
UINT32 stride = 4096 * 4;
|
|
D2D1_RESOURCE_TEXTURE_PROPERTIES props;
|
|
props.dimensions = 1;
|
|
props.extents = &width;
|
|
props.channelDepth = D2D1_CHANNEL_DEPTH_4;
|
|
props.bufferPrecision = D2D1_BUFFER_PRECISION_8BPC_UNORM;
|
|
props.filter = D2D1_FILTER_MIN_MAG_MIP_LINEAR;
|
|
D2D1_EXTEND_MODE extendMode = mStopCollection->GetExtendMode();
|
|
props.extendModes = &extendMode;
|
|
|
|
HRESULT hr = mEffectContext->CreateResourceTexture(nullptr, &props, &textureData.front(), &stride, 4096 * 4, byRef(tex));
|
|
|
|
if (FAILED(hr)) {
|
|
gfxWarning() << "Failed to create resource texture: " << hr;
|
|
}
|
|
|
|
return tex;
|
|
}
|
|
|
|
}
|
|
}
|