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Unified Diff: src/core/SkBlitter_RGB16.cpp

Issue 207683004: Extract most of the mutable state of SkShader into a separate Context object. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: rebase Created 6 years, 8 months ago
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Index: src/core/SkBlitter_RGB16.cpp
diff --git a/src/core/SkBlitter_RGB16.cpp b/src/core/SkBlitter_RGB16.cpp
index 21b5a16e3c3533961ce5232e7a21f5152ee32a84..e22aac4edaccbf0fcaf4ed7cbca6c8657b05acfb 100644
--- a/src/core/SkBlitter_RGB16.cpp
+++ b/src/core/SkBlitter_RGB16.cpp
@@ -107,7 +107,8 @@ private:
class SkRGB16_Shader_Blitter : public SkShaderBlitter {
public:
- SkRGB16_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
+ SkRGB16_Shader_Blitter(const SkBitmap& device, const SkPaint& paint,
+ SkShader::Context* shaderContext);
virtual ~SkRGB16_Shader_Blitter();
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha* antialias,
@@ -129,7 +130,8 @@ private:
// used only if the shader can perform shadSpan16
class SkRGB16_Shader16_Blitter : public SkRGB16_Shader_Blitter {
public:
- SkRGB16_Shader16_Blitter(const SkBitmap& device, const SkPaint& paint);
+ SkRGB16_Shader16_Blitter(const SkBitmap& device, const SkPaint& paint,
+ SkShader::Context* shaderContext);
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha* antialias,
const int16_t* runs);
@@ -141,7 +143,8 @@ private:
class SkRGB16_Shader_Xfermode_Blitter : public SkShaderBlitter {
public:
- SkRGB16_Shader_Xfermode_Blitter(const SkBitmap& device, const SkPaint& paint);
+ SkRGB16_Shader_Xfermode_Blitter(const SkBitmap& device, const SkPaint& paint,
+ SkShader::Context* shaderContext);
virtual ~SkRGB16_Shader_Xfermode_Blitter();
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha* antialias,
@@ -679,8 +682,9 @@ void SkRGB16_Blitter::blitRect(int x, int y, int width, int height) {
///////////////////////////////////////////////////////////////////////////////
SkRGB16_Shader16_Blitter::SkRGB16_Shader16_Blitter(const SkBitmap& device,
- const SkPaint& paint)
- : SkRGB16_Shader_Blitter(device, paint) {
+ const SkPaint& paint,
+ SkShader::Context* shaderContext)
+ : SkRGB16_Shader_Blitter(device, paint, shaderContext) {
SkASSERT(SkShader::CanCallShadeSpan16(fShaderFlags));
}
@@ -688,28 +692,28 @@ void SkRGB16_Shader16_Blitter::blitH(int x, int y, int width) {
SkASSERT(x + width <= fDevice.width());
uint16_t* SK_RESTRICT device = fDevice.getAddr16(x, y);
- SkShader* shader = fShader;
+ SkShader::Context* shaderContext = fShaderContext;
- int alpha = shader->getSpan16Alpha();
+ int alpha = shaderContext->getSpan16Alpha();
if (0xFF == alpha) {
- shader->shadeSpan16(x, y, device, width);
+ shaderContext->shadeSpan16(x, y, device, width);
} else {
uint16_t* span16 = (uint16_t*)fBuffer;
- shader->shadeSpan16(x, y, span16, width);
+ shaderContext->shadeSpan16(x, y, span16, width);
SkBlendRGB16(span16, device, SkAlpha255To256(alpha), width);
}
}
void SkRGB16_Shader16_Blitter::blitRect(int x, int y, int width, int height) {
- SkShader* shader = fShader;
- uint16_t* dst = fDevice.getAddr16(x, y);
- size_t dstRB = fDevice.rowBytes();
- int alpha = shader->getSpan16Alpha();
+ SkShader::Context* shaderContext = fShaderContext;
+ uint16_t* dst = fDevice.getAddr16(x, y);
+ size_t dstRB = fDevice.rowBytes();
+ int alpha = shaderContext->getSpan16Alpha();
if (0xFF == alpha) {
if (fShaderFlags & SkShader::kConstInY16_Flag) {
// have the shader blit directly into the device the first time
- shader->shadeSpan16(x, y, dst, width);
+ shaderContext->shadeSpan16(x, y, dst, width);
// and now just memcpy that line on the subsequent lines
if (--height > 0) {
const uint16_t* orig = dst;
@@ -720,7 +724,7 @@ void SkRGB16_Shader16_Blitter::blitRect(int x, int y, int width, int height) {
}
} else { // need to call shadeSpan16 for every line
do {
- shader->shadeSpan16(x, y, dst, width);
+ shaderContext->shadeSpan16(x, y, dst, width);
y += 1;
dst = (uint16_t*)((char*)dst + dstRB);
} while (--height);
@@ -729,14 +733,14 @@ void SkRGB16_Shader16_Blitter::blitRect(int x, int y, int width, int height) {
int scale = SkAlpha255To256(alpha);
uint16_t* span16 = (uint16_t*)fBuffer;
if (fShaderFlags & SkShader::kConstInY16_Flag) {
- shader->shadeSpan16(x, y, span16, width);
+ shaderContext->shadeSpan16(x, y, span16, width);
do {
SkBlendRGB16(span16, dst, scale, width);
dst = (uint16_t*)((char*)dst + dstRB);
} while (--height);
} else {
do {
- shader->shadeSpan16(x, y, span16, width);
+ shaderContext->shadeSpan16(x, y, span16, width);
SkBlendRGB16(span16, dst, scale, width);
y += 1;
dst = (uint16_t*)((char*)dst + dstRB);
@@ -748,11 +752,11 @@ void SkRGB16_Shader16_Blitter::blitRect(int x, int y, int width, int height) {
void SkRGB16_Shader16_Blitter::blitAntiH(int x, int y,
const SkAlpha* SK_RESTRICT antialias,
const int16_t* SK_RESTRICT runs) {
- SkShader* shader = fShader;
+ SkShader::Context* shaderContext = fShaderContext;
SkPMColor* SK_RESTRICT span = fBuffer;
- uint16_t* SK_RESTRICT device = fDevice.getAddr16(x, y);
+ uint16_t* SK_RESTRICT device = fDevice.getAddr16(x, y);
- int alpha = shader->getSpan16Alpha();
+ int alpha = shaderContext->getSpan16Alpha();
uint16_t* span16 = (uint16_t*)span;
if (0xFF == alpha) {
@@ -766,9 +770,9 @@ void SkRGB16_Shader16_Blitter::blitAntiH(int x, int y,
int aa = *antialias;
if (aa == 255) {
// go direct to the device!
- shader->shadeSpan16(x, y, device, count);
+ shaderContext->shadeSpan16(x, y, device, count);
} else if (aa) {
- shader->shadeSpan16(x, y, span16, count);
+ shaderContext->shadeSpan16(x, y, span16, count);
SkBlendRGB16(span16, device, SkAlpha255To256(aa), count);
}
device += count;
@@ -787,7 +791,7 @@ void SkRGB16_Shader16_Blitter::blitAntiH(int x, int y,
int aa = SkAlphaMul(*antialias, alpha);
if (aa) {
- shader->shadeSpan16(x, y, span16, count);
+ shaderContext->shadeSpan16(x, y, span16, count);
SkBlendRGB16(span16, device, SkAlpha255To256(aa), count);
}
@@ -802,8 +806,9 @@ void SkRGB16_Shader16_Blitter::blitAntiH(int x, int y,
///////////////////////////////////////////////////////////////////////////////
SkRGB16_Shader_Blitter::SkRGB16_Shader_Blitter(const SkBitmap& device,
- const SkPaint& paint)
-: INHERITED(device, paint) {
+ const SkPaint& paint,
+ SkShader::Context* shaderContext)
+: INHERITED(device, paint, shaderContext) {
SkASSERT(paint.getXfermode() == NULL);
fBuffer = (SkPMColor*)sk_malloc_throw(device.width() * sizeof(SkPMColor));
@@ -834,20 +839,20 @@ SkRGB16_Shader_Blitter::~SkRGB16_Shader_Blitter() {
void SkRGB16_Shader_Blitter::blitH(int x, int y, int width) {
SkASSERT(x + width <= fDevice.width());
- fShader->shadeSpan(x, y, fBuffer, width);
+ fShaderContext->shadeSpan(x, y, fBuffer, width);
// shaders take care of global alpha, so we pass 0xFF (should be ignored)
fOpaqueProc(fDevice.getAddr16(x, y), fBuffer, width, 0xFF, x, y);
}
void SkRGB16_Shader_Blitter::blitRect(int x, int y, int width, int height) {
- SkShader* shader = fShader;
- SkBlitRow::Proc proc = fOpaqueProc;
- SkPMColor* buffer = fBuffer;
- uint16_t* dst = fDevice.getAddr16(x, y);
- size_t dstRB = fDevice.rowBytes();
+ SkShader::Context* shaderContext = fShaderContext;
+ SkBlitRow::Proc proc = fOpaqueProc;
+ SkPMColor* buffer = fBuffer;
+ uint16_t* dst = fDevice.getAddr16(x, y);
+ size_t dstRB = fDevice.rowBytes();
if (fShaderFlags & SkShader::kConstInY32_Flag) {
- shader->shadeSpan(x, y, buffer, width);
+ shaderContext->shadeSpan(x, y, buffer, width);
do {
proc(dst, buffer, width, 0xFF, x, y);
y += 1;
@@ -855,7 +860,7 @@ void SkRGB16_Shader_Blitter::blitRect(int x, int y, int width, int height) {
} while (--height);
} else {
do {
- shader->shadeSpan(x, y, buffer, width);
+ shaderContext->shadeSpan(x, y, buffer, width);
proc(dst, buffer, width, 0xFF, x, y);
y += 1;
dst = (uint16_t*)((char*)dst + dstRB);
@@ -880,9 +885,9 @@ static inline int count_nonzero_span(const int16_t runs[], const SkAlpha aa[]) {
void SkRGB16_Shader_Blitter::blitAntiH(int x, int y,
const SkAlpha* SK_RESTRICT antialias,
const int16_t* SK_RESTRICT runs) {
- SkShader* shader = fShader;
+ SkShader::Context* shaderContext = fShaderContext;
SkPMColor* SK_RESTRICT span = fBuffer;
- uint16_t* SK_RESTRICT device = fDevice.getAddr16(x, y);
+ uint16_t* SK_RESTRICT device = fDevice.getAddr16(x, y);
for (;;) {
int count = *runs;
@@ -901,7 +906,7 @@ void SkRGB16_Shader_Blitter::blitAntiH(int x, int y,
int nonZeroCount = count + count_nonzero_span(runs + count, antialias + count);
SkASSERT(nonZeroCount <= fDevice.width()); // don't overrun fBuffer
- shader->shadeSpan(x, y, span, nonZeroCount);
+ shaderContext->shadeSpan(x, y, span, nonZeroCount);
SkPMColor* localSpan = span;
for (;;) {
@@ -928,8 +933,9 @@ void SkRGB16_Shader_Blitter::blitAntiH(int x, int y,
///////////////////////////////////////////////////////////////////////
SkRGB16_Shader_Xfermode_Blitter::SkRGB16_Shader_Xfermode_Blitter(
- const SkBitmap& device, const SkPaint& paint)
-: INHERITED(device, paint) {
+ const SkBitmap& device, const SkPaint& paint,
+ SkShader::Context* shaderContext)
+: INHERITED(device, paint, shaderContext) {
fXfermode = paint.getXfermode();
SkASSERT(fXfermode);
fXfermode->ref();
@@ -950,18 +956,18 @@ void SkRGB16_Shader_Xfermode_Blitter::blitH(int x, int y, int width) {
uint16_t* device = fDevice.getAddr16(x, y);
SkPMColor* span = fBuffer;
- fShader->shadeSpan(x, y, span, width);
+ fShaderContext->shadeSpan(x, y, span, width);
fXfermode->xfer16(device, span, width, NULL);
}
void SkRGB16_Shader_Xfermode_Blitter::blitAntiH(int x, int y,
const SkAlpha* SK_RESTRICT antialias,
const int16_t* SK_RESTRICT runs) {
- SkShader* shader = fShader;
- SkXfermode* mode = fXfermode;
+ SkShader::Context* shaderContext = fShaderContext;
+ SkXfermode* mode = fXfermode;
SkPMColor* SK_RESTRICT span = fBuffer;
- uint8_t* SK_RESTRICT aaExpand = fAAExpand;
- uint16_t* SK_RESTRICT device = fDevice.getAddr16(x, y);
+ uint8_t* SK_RESTRICT aaExpand = fAAExpand;
+ uint16_t* SK_RESTRICT device = fDevice.getAddr16(x, y);
for (;;) {
int count = *runs;
@@ -981,7 +987,7 @@ void SkRGB16_Shader_Xfermode_Blitter::blitAntiH(int x, int y,
antialias + count);
SkASSERT(nonZeroCount <= fDevice.width()); // don't overrun fBuffer
- shader->shadeSpan(x, y, span, nonZeroCount);
+ shaderContext->shadeSpan(x, y, span, nonZeroCount);
x += nonZeroCount;
SkPMColor* localSpan = span;
@@ -1012,6 +1018,7 @@ void SkRGB16_Shader_Xfermode_Blitter::blitAntiH(int x, int y,
///////////////////////////////////////////////////////////////////////////////
SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device, const SkPaint& paint,
+ SkShader::Context* shaderContext,
SkTBlitterAllocator* allocator) {
SkASSERT(allocator != NULL);
@@ -1023,12 +1030,14 @@ SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device, const SkPaint& paint,
SkASSERT(NULL == mode || NULL != shader);
if (shader) {
+ SkASSERT(shaderContext != NULL);
if (mode) {
- blitter = allocator->createT<SkRGB16_Shader_Xfermode_Blitter>(device, paint);
- } else if (shader->canCallShadeSpan16()) {
- blitter = allocator->createT<SkRGB16_Shader16_Blitter>(device, paint);
+ blitter = allocator->createT<SkRGB16_Shader_Xfermode_Blitter>(device, paint,
+ shaderContext);
+ } else if (shaderContext->canCallShadeSpan16()) {
+ blitter = allocator->createT<SkRGB16_Shader16_Blitter>(device, paint, shaderContext);
} else {
- blitter = allocator->createT<SkRGB16_Shader_Blitter>(device, paint);
+ blitter = allocator->createT<SkRGB16_Shader_Blitter>(device, paint, shaderContext);
}
} else {
// no shader, no xfermode, (and we always ignore colorfilter)
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