mirror of https://github.com/axmolengine/axmol.git
655 lines
26 KiB
C++
655 lines
26 KiB
C++
/*
|
|
Copyright 2010 Google Inc.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
#ifndef GrContext_DEFINED
|
|
#define GrContext_DEFINED
|
|
|
|
#include "GrClip.h"
|
|
#include "GrTextureCache.h"
|
|
#include "GrPaint.h"
|
|
#include "GrPathRenderer.h"
|
|
|
|
class GrFontCache;
|
|
class GrGpu;
|
|
struct GrGpuStats;
|
|
class GrVertexBufferAllocPool;
|
|
class GrIndexBufferAllocPool;
|
|
class GrInOrderDrawBuffer;
|
|
|
|
class GR_API GrContext : public GrRefCnt {
|
|
public:
|
|
/**
|
|
* Creates a GrContext from within a 3D context.
|
|
*/
|
|
static GrContext* Create(GrEngine engine,
|
|
GrPlatform3DContext context3D);
|
|
|
|
/**
|
|
* Helper to create a opengl-shader based context
|
|
*/
|
|
static GrContext* CreateGLShaderContext();
|
|
|
|
virtual ~GrContext();
|
|
|
|
/**
|
|
* The GrContext normally assumes that no outsider is setting state
|
|
* within the underlying 3D API's context/device/whatever. This call informs
|
|
* the context that the state was modified and it should resend. Shouldn't
|
|
* be called frequently for good performance.
|
|
*/
|
|
void resetContext();
|
|
|
|
/**
|
|
* Abandons all gpu resources, assumes 3D API state is unknown. Call this
|
|
* if you have lost the associated GPU context, and thus internal texture,
|
|
* buffer, etc. references/IDs are now invalid. Should be called even when
|
|
* GrContext is no longer going to be used for two reasons:
|
|
* 1) ~GrContext will not try to free the objects in the 3D API.
|
|
* 2) If you've created GrResources that outlive the GrContext they will
|
|
* be marked as invalid (GrResource::isValid()) and won't attempt to
|
|
* free their underlying resource in the 3D API.
|
|
* Content drawn since the last GrContext::flush() may be lost.
|
|
*/
|
|
void contextLost();
|
|
|
|
/**
|
|
* Similar to contextLost, but makes no attempt to reset state.
|
|
* Use this method when GrContext destruction is pending, but
|
|
* the graphics context is destroyed first.
|
|
*/
|
|
void contextDestroyed();
|
|
|
|
/**
|
|
* Frees gpu created by the context. Can be called to reduce GPU memory
|
|
* pressure.
|
|
*/
|
|
void freeGpuResources();
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Textures
|
|
|
|
/**
|
|
* Search for an entry with the same Key. If found, "lock" it and return it.
|
|
* If not found, return null.
|
|
*/
|
|
GrTextureEntry* findAndLockTexture(GrTextureKey*,
|
|
const GrSamplerState&);
|
|
|
|
|
|
/**
|
|
* Create a new entry, based on the specified key and texture, and return
|
|
* its "locked" entry.
|
|
*
|
|
* Ownership of the texture is transferred to the Entry, which will unref()
|
|
* it when we are purged or deleted.
|
|
*/
|
|
GrTextureEntry* createAndLockTexture(GrTextureKey* key,
|
|
const GrSamplerState&,
|
|
const GrTextureDesc&,
|
|
void* srcData, size_t rowBytes);
|
|
|
|
/**
|
|
* Returns a texture matching the desc. It's contents are unknown. Subsequent
|
|
* requests with the same descriptor are not guaranteed to return the same
|
|
* texture. The same texture is guaranteed not be returned again until it is
|
|
* unlocked.
|
|
*
|
|
* Textures created by createAndLockTexture() hide the complications of
|
|
* tiling non-power-of-two textures on APIs that don't support this (e.g.
|
|
* unextended GLES2). Tiling a npot texture created by lockKeylessTexture on
|
|
* such an API will create gaps in the tiling pattern. This includes clamp
|
|
* mode. (This may be addressed in a future update.)
|
|
*/
|
|
GrTextureEntry* lockKeylessTexture(const GrTextureDesc& desc);
|
|
|
|
/**
|
|
* Finds a texture that approximately matches the descriptor. Will be
|
|
* at least as large in width and height as desc specifies. If desc
|
|
* specifies that texture is a render target then result will be a
|
|
* render target. If desc specifies a render target and doesn't set the
|
|
* no stencil flag then result will have a stencil. Format and aa level
|
|
* will always match.
|
|
*/
|
|
GrTextureEntry* findApproximateKeylessTexture(const GrTextureDesc& desc);
|
|
|
|
/**
|
|
* When done with an entry, call unlockTexture(entry) on it, which returns
|
|
* it to the cache, where it may be purged.
|
|
*/
|
|
void unlockTexture(GrTextureEntry* entry);
|
|
|
|
/**
|
|
* Creates a texture that is outside the cache. Does not count against
|
|
* cache's budget.
|
|
*/
|
|
GrTexture* createUncachedTexture(const GrTextureDesc&,
|
|
void* srcData,
|
|
size_t rowBytes);
|
|
|
|
/**
|
|
* Returns true if the specified use of an indexed texture is supported.
|
|
*/
|
|
bool supportsIndex8PixelConfig(const GrSamplerState&, int width, int height);
|
|
|
|
/**
|
|
* Return the current texture cache limits.
|
|
*
|
|
* @param maxTextures If non-null, returns maximum number of textures that
|
|
* can be held in the cache.
|
|
* @param maxTextureBytes If non-null, returns maximum number of bytes of
|
|
* texture memory that can be held in the cache.
|
|
*/
|
|
void getTextureCacheLimits(int* maxTextures, size_t* maxTextureBytes) const;
|
|
|
|
/**
|
|
* Specify the texture cache limits. If the current cache exceeds either
|
|
* of these, it will be purged (LRU) to keep the cache within these limits.
|
|
*
|
|
* @param maxTextures The maximum number of textures that can be held in
|
|
* the cache.
|
|
* @param maxTextureBytes The maximum number of bytes of texture memory
|
|
* that can be held in the cache.
|
|
*/
|
|
void setTextureCacheLimits(int maxTextures, size_t maxTextureBytes);
|
|
|
|
/**
|
|
* Return the max width or height of a texture supported by the current gpu
|
|
*/
|
|
int getMaxTextureSize() const;
|
|
|
|
/**
|
|
* Return the max width or height of a render target supported by the
|
|
* current gpu
|
|
*/
|
|
int getMaxRenderTargetSize() const;
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Render targets
|
|
|
|
/**
|
|
* Sets the render target.
|
|
* @param target the render target to set. (should not be NULL.)
|
|
*/
|
|
void setRenderTarget(GrRenderTarget* target);
|
|
|
|
/**
|
|
* Gets the current render target.
|
|
* @return the currently bound render target. Should never be NULL.
|
|
*/
|
|
const GrRenderTarget* getRenderTarget() const;
|
|
GrRenderTarget* getRenderTarget();
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Platform Surfaces
|
|
|
|
// GrContext provides an interface for wrapping externally created textures
|
|
// and rendertargets in their Gr-equivalents.
|
|
|
|
/**
|
|
* Wraps an existing 3D API surface in a GrObject. desc.fFlags determines
|
|
* the type of object returned. If kIsTexture is set the returned object
|
|
* will be a GrTexture*. Otherwise, it will be a GrRenderTarget*. If both
|
|
* are set the render target object is accessible by
|
|
* GrTexture::asRenderTarget().
|
|
*
|
|
* GL: if the object is a texture Gr may change its GL texture parameters
|
|
* when it is drawn.
|
|
*
|
|
* @param desc description of the object to create.
|
|
* @return either a GrTexture* or GrRenderTarget* depending on desc. NULL
|
|
* on failure.
|
|
*/
|
|
GrResource* createPlatformSurface(const GrPlatformSurfaceDesc& desc);
|
|
/**
|
|
* Reads the current target object (e.g. FBO or IDirect3DSurface9*) and
|
|
* viewport state from the underlying 3D API and wraps it in a
|
|
* GrRenderTarget. The GrRenderTarget will not attempt to delete/destroy the
|
|
* underlying object in its destructor and it is up to caller to guarantee
|
|
* that it remains valid while the GrRenderTarget is used.
|
|
*
|
|
* Will not detect that the render target is also a texture. If you need
|
|
* to also use the render target as a GrTexture use createPlatformSurface.
|
|
*
|
|
* @return the newly created GrRenderTarget
|
|
*/
|
|
GrRenderTarget* createRenderTargetFrom3DApiState();
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Matrix state
|
|
|
|
/**
|
|
* Gets the current transformation matrix.
|
|
* @return the current matrix.
|
|
*/
|
|
const GrMatrix& getMatrix() const;
|
|
|
|
/**
|
|
* Sets the transformation matrix.
|
|
* @param m the matrix to set.
|
|
*/
|
|
void setMatrix(const GrMatrix& m);
|
|
|
|
/**
|
|
* Concats the current matrix. The passed matrix is applied before the
|
|
* current matrix.
|
|
* @param m the matrix to concat.
|
|
*/
|
|
void concatMatrix(const GrMatrix& m) const;
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Clip state
|
|
/**
|
|
* Gets the current clip.
|
|
* @return the current clip.
|
|
*/
|
|
const GrClip& getClip() const;
|
|
|
|
/**
|
|
* Sets the clip.
|
|
* @param clip the clip to set.
|
|
*/
|
|
void setClip(const GrClip& clip);
|
|
|
|
/**
|
|
* Convenience method for setting the clip to a rect.
|
|
* @param rect the rect to set as the new clip.
|
|
*/
|
|
void setClip(const GrIRect& rect);
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Draws
|
|
|
|
/**
|
|
* Clear the entire or rect of the render target, ignoring any clips.
|
|
* @param rect the rect to clear or the whole thing if rect is NULL.
|
|
* @param color the color to clear to.
|
|
*/
|
|
void clear(const GrIRect* rect, GrColor color);
|
|
|
|
/**
|
|
* Draw everywhere (respecting the clip) with the paint.
|
|
*/
|
|
void drawPaint(const GrPaint& paint);
|
|
|
|
/**
|
|
* Draw the rect using a paint.
|
|
* @param paint describes how to color pixels.
|
|
* @param strokeWidth If strokeWidth < 0, then the rect is filled, else
|
|
* the rect is mitered stroked based on strokeWidth. If
|
|
* strokeWidth == 0, then the stroke is always a single
|
|
* pixel thick.
|
|
* @param matrix Optional matrix applied to the rect. Applied before
|
|
* context's matrix or the paint's matrix.
|
|
* The rects coords are used to access the paint (through texture matrix)
|
|
*/
|
|
void drawRect(const GrPaint& paint,
|
|
const GrRect&,
|
|
GrScalar strokeWidth = -1,
|
|
const GrMatrix* matrix = NULL);
|
|
|
|
/**
|
|
* Maps a rect of paint coordinates onto the a rect of destination
|
|
* coordinates. Each rect can optionally be transformed. The srcRect
|
|
* is stretched over the dstRect. The dstRect is transformed by the
|
|
* context's matrix and the srcRect is transformed by the paint's matrix.
|
|
* Additional optional matrices can be provided by parameters.
|
|
*
|
|
* @param paint describes how to color pixels.
|
|
* @param dstRect the destination rect to draw.
|
|
* @param srcRect rect of paint coordinates to be mapped onto dstRect
|
|
* @param dstMatrix Optional matrix to transform dstRect. Applied before
|
|
* context's matrix.
|
|
* @param srcMatrix Optional matrix to transform srcRect Applied before
|
|
* paint's matrix.
|
|
*/
|
|
void drawRectToRect(const GrPaint& paint,
|
|
const GrRect& dstRect,
|
|
const GrRect& srcRect,
|
|
const GrMatrix* dstMatrix = NULL,
|
|
const GrMatrix* srcMatrix = NULL);
|
|
|
|
/**
|
|
* Draws a path.
|
|
*
|
|
* @param paint describes how to color pixels.
|
|
* @param path the path to draw
|
|
* @param fill the path filling rule to use.
|
|
* @param translate optional additional translation applied to the
|
|
* path.
|
|
*/
|
|
void drawPath(const GrPaint& paint, const GrPath& path, GrPathFill fill,
|
|
const GrPoint* translate = NULL);
|
|
|
|
/**
|
|
* Draws vertices with a paint.
|
|
*
|
|
* @param paint describes how to color pixels.
|
|
* @param primitiveType primitives type to draw.
|
|
* @param vertexCount number of vertices.
|
|
* @param positions array of vertex positions, required.
|
|
* @param texCoords optional array of texture coordinates used
|
|
* to access the paint.
|
|
* @param colors optional array of per-vertex colors, supercedes
|
|
* the paint's color field.
|
|
* @param indices optional array of indices. If NULL vertices
|
|
* are drawn non-indexed.
|
|
* @param indexCount if indices is non-null then this is the
|
|
* number of indices.
|
|
*/
|
|
void drawVertices(const GrPaint& paint,
|
|
GrPrimitiveType primitiveType,
|
|
int vertexCount,
|
|
const GrPoint positions[],
|
|
const GrPoint texs[],
|
|
const GrColor colors[],
|
|
const uint16_t indices[],
|
|
int indexCount);
|
|
|
|
/**
|
|
* Similar to drawVertices but caller provides objects that convert to Gr
|
|
* types. The count of vertices is given by posSrc.
|
|
*
|
|
* @param paint describes how to color pixels.
|
|
* @param primitiveType primitives type to draw.
|
|
* @param posSrc Source of vertex positions. Must implement
|
|
* int count() const;
|
|
* void writeValue(int i, GrPoint* point) const;
|
|
* count returns the total number of vertices and
|
|
* writeValue writes a vertex position to point.
|
|
* @param texSrc optional, pass NULL to not use explicit tex
|
|
* coords. If present provides tex coords with
|
|
* method:
|
|
* void writeValue(int i, GrPoint* point) const;
|
|
* @param texSrc optional, pass NULL to not use per-vertex colors
|
|
* If present provides colors with method:
|
|
* void writeValue(int i, GrColor* point) const;
|
|
* @param indices optional, pass NULL for non-indexed drawing. If
|
|
* present supplies indices for indexed drawing
|
|
* with following methods:
|
|
* int count() const;
|
|
* void writeValue(int i, uint16_t* point) const;
|
|
* count returns the number of indices and
|
|
* writeValue supplies each index.
|
|
*/
|
|
template <typename POS_SRC,
|
|
typename TEX_SRC,
|
|
typename COL_SRC,
|
|
typename IDX_SRC>
|
|
void drawCustomVertices(const GrPaint& paint,
|
|
GrPrimitiveType primitiveType,
|
|
const POS_SRC& posSrc,
|
|
const TEX_SRC* texCoordSrc,
|
|
const COL_SRC* colorSrc,
|
|
const IDX_SRC* idxSrc);
|
|
/**
|
|
* To avoid the problem of having to create a typename for NULL parameters,
|
|
* these reduced versions of drawCustomVertices are provided.
|
|
*/
|
|
template <typename POS_SRC>
|
|
void drawCustomVertices(const GrPaint& paint,
|
|
GrPrimitiveType primitiveType,
|
|
const POS_SRC& posSrc);
|
|
template <typename POS_SRC, typename TEX_SRC>
|
|
void drawCustomVertices(const GrPaint& paint,
|
|
GrPrimitiveType primitiveType,
|
|
const POS_SRC& posSrc,
|
|
const TEX_SRC* texCoordSrc);
|
|
template <typename POS_SRC, typename TEX_SRC, typename COL_SRC>
|
|
void drawCustomVertices(const GrPaint& paint,
|
|
GrPrimitiveType primitiveType,
|
|
const POS_SRC& posSrc,
|
|
const TEX_SRC* texCoordSrc,
|
|
const COL_SRC* colorSrc);
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Misc.
|
|
|
|
/**
|
|
* Flags that affect flush() behavior.
|
|
*/
|
|
enum FlushBits {
|
|
/**
|
|
* A client may want Gr to bind a GrRenderTarget in the 3D API so that
|
|
* it can be rendered to directly. However, Gr lazily sets state. Simply
|
|
* calling setRenderTarget() followed by flush() without flags may not
|
|
* bind the render target. This flag forces the context to bind the last
|
|
* set render target in the 3D API.
|
|
*/
|
|
kForceCurrentRenderTarget_FlushBit = 0x1,
|
|
/**
|
|
* A client may reach a point where it has partially rendered a frame
|
|
* through a GrContext that it knows the user will never see. This flag
|
|
* causes the flush to skip submission of deferred content to the 3D API
|
|
* during the flush.
|
|
*/
|
|
kDiscard_FlushBit = 0x2,
|
|
};
|
|
|
|
/**
|
|
* Call to ensure all drawing to the context has been issued to the
|
|
* underlying 3D API.
|
|
* @param flagsBitfield flags that control the flushing behavior. See
|
|
* FlushBits.
|
|
*/
|
|
void flush(int flagsBitfield = 0);
|
|
|
|
/**
|
|
* Reads a rectangle of pixels from a render target.
|
|
* @param renderTarget the render target to read from. NULL means the
|
|
* current render target.
|
|
* @param left left edge of the rectangle to read (inclusive)
|
|
* @param top top edge of the rectangle to read (inclusive)
|
|
* @param width width of rectangle to read in pixels.
|
|
* @param height height of rectangle to read in pixels.
|
|
* @param config the pixel config of the destination buffer
|
|
* @param buffer memory to read the rectangle into.
|
|
*
|
|
* @return true if the read succeeded, false if not. The read can fail
|
|
* because of a unsupported pixel config or because no render
|
|
* target is currently set.
|
|
*/
|
|
bool readRenderTargetPixels(GrRenderTarget* target,
|
|
int left, int top, int width, int height,
|
|
GrPixelConfig config, void* buffer);
|
|
|
|
/**
|
|
* Reads a rectangle of pixels from a texture.
|
|
* @param texture the render target to read from.
|
|
* @param left left edge of the rectangle to read (inclusive)
|
|
* @param top top edge of the rectangle to read (inclusive)
|
|
* @param width width of rectangle to read in pixels.
|
|
* @param height height of rectangle to read in pixels.
|
|
* @param config the pixel config of the destination buffer
|
|
* @param buffer memory to read the rectangle into.
|
|
*
|
|
* @return true if the read succeeded, false if not. The read can fail
|
|
* because of a unsupported pixel config.
|
|
*/
|
|
bool readTexturePixels(GrTexture* target,
|
|
int left, int top, int width, int height,
|
|
GrPixelConfig config, void* buffer);
|
|
|
|
/**
|
|
* Copy the src pixels [buffer, stride, pixelconfig] into the current
|
|
* render-target at the specified rectangle.
|
|
*/
|
|
void writePixels(int left, int top, int width, int height,
|
|
GrPixelConfig, const void* buffer, size_t stride);
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Helpers
|
|
|
|
class AutoRenderTarget : ::GrNoncopyable {
|
|
public:
|
|
AutoRenderTarget(GrContext* context, GrRenderTarget* target) {
|
|
fContext = NULL;
|
|
fPrevTarget = context->getRenderTarget();
|
|
if (fPrevTarget != target) {
|
|
context->setRenderTarget(target);
|
|
fContext = context;
|
|
}
|
|
}
|
|
~AutoRenderTarget() {
|
|
if (fContext) {
|
|
fContext->setRenderTarget(fPrevTarget);
|
|
}
|
|
}
|
|
private:
|
|
GrContext* fContext;
|
|
GrRenderTarget* fPrevTarget;
|
|
};
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Functions intended for internal use only.
|
|
GrGpu* getGpu() { return fGpu; }
|
|
GrFontCache* getFontCache() { return fFontCache; }
|
|
GrDrawTarget* getTextTarget(const GrPaint& paint);
|
|
void flushText();
|
|
const GrIndexBuffer* getQuadIndexBuffer() const;
|
|
void resetStats();
|
|
const GrGpuStats& getStats() const;
|
|
void printStats() const;
|
|
|
|
private:
|
|
// used to keep track of when we need to flush the draw buffer
|
|
enum DrawCategory {
|
|
kBuffered_DrawCategory, // last draw was inserted in draw buffer
|
|
kUnbuffered_DrawCategory, // last draw was not inserted in the draw buffer
|
|
kText_DrawCategory // text context was last to draw
|
|
};
|
|
DrawCategory fLastDrawCategory;
|
|
|
|
GrGpu* fGpu;
|
|
GrTextureCache* fTextureCache;
|
|
GrFontCache* fFontCache;
|
|
|
|
GrPathRenderer* fCustomPathRenderer;
|
|
GrDefaultPathRenderer fDefaultPathRenderer;
|
|
|
|
GrVertexBufferAllocPool* fDrawBufferVBAllocPool;
|
|
GrIndexBufferAllocPool* fDrawBufferIBAllocPool;
|
|
GrInOrderDrawBuffer* fDrawBuffer;
|
|
|
|
GrIndexBuffer* fAAFillRectIndexBuffer;
|
|
GrIndexBuffer* fAAStrokeRectIndexBuffer;
|
|
int fMaxOffscreenAASize;
|
|
|
|
GrContext(GrGpu* gpu);
|
|
|
|
void fillAARect(GrDrawTarget* target,
|
|
const GrPaint& paint,
|
|
const GrRect& devRect);
|
|
|
|
void strokeAARect(GrDrawTarget* target,
|
|
const GrPaint& paint,
|
|
const GrRect& devRect,
|
|
const GrVec& devStrokeSize);
|
|
|
|
inline int aaFillRectIndexCount() const;
|
|
GrIndexBuffer* aaFillRectIndexBuffer();
|
|
|
|
inline int aaStrokeRectIndexCount() const;
|
|
GrIndexBuffer* aaStrokeRectIndexBuffer();
|
|
|
|
void setupDrawBuffer();
|
|
|
|
void flushDrawBuffer();
|
|
|
|
static void SetPaint(const GrPaint& paint, GrDrawTarget* target);
|
|
|
|
bool finalizeTextureKey(GrTextureKey*,
|
|
const GrSamplerState&,
|
|
bool keyless) const;
|
|
|
|
GrDrawTarget* prepareToDraw(const GrPaint& paint, DrawCategory drawType);
|
|
|
|
void drawClipIntoStencil();
|
|
|
|
GrPathRenderer* getPathRenderer(const GrDrawTarget*, const GrPath&, GrPathFill);
|
|
|
|
struct OffscreenRecord;
|
|
|
|
// determines whether offscreen AA should be applied
|
|
bool doOffscreenAA(GrDrawTarget* target,
|
|
const GrPaint& paint,
|
|
bool isLines) const;
|
|
|
|
// attempts to setup offscreen AA. All paint state must be transferred to
|
|
// target by the time this is called.
|
|
bool prepareForOffscreenAA(GrDrawTarget* target,
|
|
bool requireStencil,
|
|
const GrIRect& boundRect,
|
|
GrPathRenderer* pr,
|
|
OffscreenRecord* record);
|
|
|
|
// sets up target to draw coverage to the supersampled render target
|
|
void setupOffscreenAAPass1(GrDrawTarget* target,
|
|
const GrIRect& boundRect,
|
|
int tileX, int tileY,
|
|
OffscreenRecord* record);
|
|
|
|
// sets up target to sample coverage of supersampled render target back
|
|
// to the main render target using stage kOffscreenStage.
|
|
void doOffscreenAAPass2(GrDrawTarget* target,
|
|
const GrPaint& paint,
|
|
const GrIRect& boundRect,
|
|
int tileX, int tileY,
|
|
OffscreenRecord* record);
|
|
|
|
// restored the draw target state and releases offscreen target to cache
|
|
void cleanupOffscreenAA(GrDrawTarget* target,
|
|
GrPathRenderer* pr,
|
|
OffscreenRecord* record);
|
|
|
|
// computes vertex layout bits based on the paint. If paint expresses
|
|
// a texture for a stage, the stage coords will be bound to postitions
|
|
// unless hasTexCoords[s]==true in which case stage s's input coords
|
|
// are bound to tex coord index s. hasTexCoords == NULL is a shortcut
|
|
// for an array where all the values are false.
|
|
static int PaintStageVertexLayoutBits(
|
|
const GrPaint& paint,
|
|
const bool hasTexCoords[GrPaint::kTotalStages]);
|
|
|
|
};
|
|
|
|
/**
|
|
* Save/restore the view-matrix in the context.
|
|
*/
|
|
class GrAutoMatrix : GrNoncopyable {
|
|
public:
|
|
GrAutoMatrix(GrContext* ctx) : fContext(ctx) {
|
|
fMatrix = ctx->getMatrix();
|
|
}
|
|
GrAutoMatrix(GrContext* ctx, const GrMatrix& matrix) : fContext(ctx) {
|
|
fMatrix = ctx->getMatrix();
|
|
ctx->setMatrix(matrix);
|
|
}
|
|
~GrAutoMatrix() {
|
|
fContext->setMatrix(fMatrix);
|
|
}
|
|
|
|
private:
|
|
GrContext* fContext;
|
|
GrMatrix fMatrix;
|
|
};
|
|
|
|
#endif
|
|
|
|
#include "GrContext_impl.h"
|
|
|