skia WIPjarred/canvas

1 files changed, 263 insertions, 0 deletions

diff --git a/src/deps/skia/include/core/SkSurfaceCharacterization.h b/src/deps/skia/include/core/SkSurfaceCharacterization.h
new file mode 100644
index 000000000..91b10e87b
--- /dev/null
+++ b/src/deps/skia/include/core/SkSurfaceCharacterization.h
@@ -0,0 +1,263 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkSurfaceCharacterization_DEFINED
+#define SkSurfaceCharacterization_DEFINED
+
+
+#include "include/core/SkColorSpace.h"
+#include "include/core/SkImageInfo.h"
+#include "include/core/SkRefCnt.h"
+#include "include/core/SkSurfaceProps.h"
+
+class SkColorSpace;
+
+
+#if SK_SUPPORT_GPU
+#include "include/gpu/GrBackendSurface.h"
+#include "include/gpu/GrContextThreadSafeProxy.h"
+#include "include/gpu/GrTypes.h"
+
+/** \class SkSurfaceCharacterization
+    A surface characterization contains all the information Ganesh requires to makes its internal
+    rendering decisions. When passed into a SkDeferredDisplayListRecorder it will copy the
+    data and pass it on to the SkDeferredDisplayList if/when it is created. Note that both of
+    those objects (the Recorder and the DisplayList) will take a ref on the
+    GrContextThreadSafeProxy and SkColorSpace objects.
+*/
+class SK_API SkSurfaceCharacterization {
+public:
+    enum class Textureable : bool { kNo = false, kYes = true };
+    enum class MipMapped : bool { kNo = false, kYes = true };
+    enum class UsesGLFBO0 : bool { kNo = false, kYes = true };
+    // This flag indicates that the backing VkImage for this Vulkan surface will have the
+    // VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT set. This bit allows skia to handle advanced blends
+    // more optimally in a shader by being able to directly read the dst values.
+    enum class VkRTSupportsInputAttachment : bool { kNo = false, kYes = true };
+    // This flag indicates if the surface is wrapping a raw Vulkan secondary command buffer.
+    enum class VulkanSecondaryCBCompatible : bool { kNo = false, kYes = true };
+
+    SkSurfaceCharacterization()
+            : fCacheMaxResourceBytes(0)
+            , fOrigin(kBottomLeft_GrSurfaceOrigin)
+            , fSampleCnt(0)
+            , fIsTextureable(Textureable::kYes)
+            , fIsMipMapped(MipMapped::kYes)
+            , fUsesGLFBO0(UsesGLFBO0::kNo)
+            , fVulkanSecondaryCBCompatible(VulkanSecondaryCBCompatible::kNo)
+            , fIsProtected(GrProtected::kNo)
+            , fSurfaceProps(0, kUnknown_SkPixelGeometry) {
+    }
+
+    SkSurfaceCharacterization(SkSurfaceCharacterization&&) = default;
+    SkSurfaceCharacterization& operator=(SkSurfaceCharacterization&&) = default;
+
+    SkSurfaceCharacterization(const SkSurfaceCharacterization&) = default;
+    SkSurfaceCharacterization& operator=(const SkSurfaceCharacterization& other) = default;
+    bool operator==(const SkSurfaceCharacterization& other) const;
+    bool operator!=(const SkSurfaceCharacterization& other) const {
+        return !(*this == other);
+    }
+
+    /*
+     * Return a new surface characterization with the only difference being a different width
+     * and height
+     */
+    SkSurfaceCharacterization createResized(int width, int height) const;
+
+    /*
+     * Return a new surface characterization with only a replaced color space
+     */
+    SkSurfaceCharacterization createColorSpace(sk_sp<SkColorSpace>) const;
+
+    /*
+     * Return a new surface characterization with the backend format replaced. A colorType
+     * must also be supplied to indicate the interpretation of the new format.
+     */
+    SkSurfaceCharacterization createBackendFormat(SkColorType colorType,
+                                                  const GrBackendFormat& backendFormat) const;
+
+    /*
+     * Return a new surface characterization with just a different use of FBO0 (in GL)
+     */
+    SkSurfaceCharacterization createFBO0(bool usesGLFBO0) const;
+
+    GrContextThreadSafeProxy* contextInfo() const { return fContextInfo.get(); }
+    sk_sp<GrContextThreadSafeProxy> refContextInfo() const { return fContextInfo; }
+    size_t cacheMaxResourceBytes() const { return fCacheMaxResourceBytes; }
+
+    bool isValid() const { return kUnknown_SkColorType != fImageInfo.colorType(); }
+
+    const SkImageInfo& imageInfo() const { return fImageInfo; }
+    const GrBackendFormat& backendFormat() const { return fBackendFormat; }
+    GrSurfaceOrigin origin() const { return fOrigin; }
+    SkISize dimensions() const { return fImageInfo.dimensions(); }
+    int width() const { return fImageInfo.width(); }
+    int height() const { return fImageInfo.height(); }
+    SkColorType colorType() const { return fImageInfo.colorType(); }
+    int sampleCount() const { return fSampleCnt; }
+    bool isTextureable() const { return Textureable::kYes == fIsTextureable; }
+    bool isMipMapped() const { return MipMapped::kYes == fIsMipMapped; }
+    bool usesGLFBO0() const { return UsesGLFBO0::kYes == fUsesGLFBO0; }
+    bool vkRTSupportsInputAttachment() const {
+        return VkRTSupportsInputAttachment::kYes == fVkRTSupportsInputAttachment;
+    }
+    bool vulkanSecondaryCBCompatible() const {
+        return VulkanSecondaryCBCompatible::kYes == fVulkanSecondaryCBCompatible;
+    }
+    GrProtected isProtected() const { return fIsProtected; }
+    SkColorSpace* colorSpace() const { return fImageInfo.colorSpace(); }
+    sk_sp<SkColorSpace> refColorSpace() const { return fImageInfo.refColorSpace(); }
+    const SkSurfaceProps& surfaceProps()const { return fSurfaceProps; }
+
+    // Is the provided backend texture compatible with this surface characterization?
+    bool isCompatible(const GrBackendTexture&) const;
+
+private:
+    friend class SkSurface_Gpu; // for 'set' & 'config'
+    friend class GrVkSecondaryCBDrawContext; // for 'set' & 'config'
+    friend class GrContextThreadSafeProxy; // for private ctor
+    friend class SkDeferredDisplayListRecorder; // for 'config'
+    friend class SkSurface; // for 'config'
+
+    SkDEBUGCODE(void validate() const;)
+
+    SkSurfaceCharacterization(sk_sp<GrContextThreadSafeProxy> contextInfo,
+                              size_t cacheMaxResourceBytes,
+                              const SkImageInfo& ii,
+                              const GrBackendFormat& backendFormat,
+                              GrSurfaceOrigin origin,
+                              int sampleCnt,
+                              Textureable isTextureable,
+                              MipMapped isMipMapped,
+                              UsesGLFBO0 usesGLFBO0,
+                              VkRTSupportsInputAttachment vkRTSupportsInputAttachment,
+                              VulkanSecondaryCBCompatible vulkanSecondaryCBCompatible,
+                              GrProtected isProtected,
+                              const SkSurfaceProps& surfaceProps)
+            : fContextInfo(std::move(contextInfo))
+            , fCacheMaxResourceBytes(cacheMaxResourceBytes)
+            , fImageInfo(ii)
+            , fBackendFormat(backendFormat)
+            , fOrigin(origin)
+            , fSampleCnt(sampleCnt)
+            , fIsTextureable(isTextureable)
+            , fIsMipMapped(isMipMapped)
+            , fUsesGLFBO0(usesGLFBO0)
+            , fVkRTSupportsInputAttachment(vkRTSupportsInputAttachment)
+            , fVulkanSecondaryCBCompatible(vulkanSecondaryCBCompatible)
+            , fIsProtected(isProtected)
+            , fSurfaceProps(surfaceProps) {
+        if (fSurfaceProps.flags() & SkSurfaceProps::kDynamicMSAA_Flag) {
+            // Dynamic MSAA is not currently supported with DDL.
+            *this = {};
+        }
+        SkDEBUGCODE(this->validate());
+    }
+
+    void set(sk_sp<GrContextThreadSafeProxy> contextInfo,
+             size_t cacheMaxResourceBytes,
+             const SkImageInfo& ii,
+             const GrBackendFormat& backendFormat,
+             GrSurfaceOrigin origin,
+             int sampleCnt,
+             Textureable isTextureable,
+             MipMapped isMipMapped,
+             UsesGLFBO0 usesGLFBO0,
+             VkRTSupportsInputAttachment vkRTSupportsInputAttachment,
+             VulkanSecondaryCBCompatible vulkanSecondaryCBCompatible,
+             GrProtected isProtected,
+             const SkSurfaceProps& surfaceProps) {
+        if (surfaceProps.flags() & SkSurfaceProps::kDynamicMSAA_Flag) {
+            // Dynamic MSAA is not currently supported with DDL.
+            *this = {};
+        } else {
+            fContextInfo = contextInfo;
+            fCacheMaxResourceBytes = cacheMaxResourceBytes;
+
+            fImageInfo = ii;
+            fBackendFormat = backendFormat;
+            fOrigin = origin;
+            fSampleCnt = sampleCnt;
+            fIsTextureable = isTextureable;
+            fIsMipMapped = isMipMapped;
+            fUsesGLFBO0 = usesGLFBO0;
+            fVkRTSupportsInputAttachment = vkRTSupportsInputAttachment;
+            fVulkanSecondaryCBCompatible = vulkanSecondaryCBCompatible;
+            fIsProtected = isProtected;
+            fSurfaceProps = surfaceProps;
+        }
+        SkDEBUGCODE(this->validate());
+    }
+
+    sk_sp<GrContextThreadSafeProxy> fContextInfo;
+    size_t                          fCacheMaxResourceBytes;
+
+    SkImageInfo                     fImageInfo;
+    GrBackendFormat                 fBackendFormat;
+    GrSurfaceOrigin                 fOrigin;
+    int                             fSampleCnt;
+    Textureable                     fIsTextureable;
+    MipMapped                       fIsMipMapped;
+    UsesGLFBO0                      fUsesGLFBO0;
+    VkRTSupportsInputAttachment     fVkRTSupportsInputAttachment;
+    VulkanSecondaryCBCompatible     fVulkanSecondaryCBCompatible;
+    GrProtected                     fIsProtected;
+    SkSurfaceProps                  fSurfaceProps;
+};
+
+#else// !SK_SUPPORT_GPU
+class GrBackendFormat;
+
+class SK_API SkSurfaceCharacterization {
+public:
+    SkSurfaceCharacterization() : fSurfaceProps(0, kUnknown_SkPixelGeometry) { }
+
+    SkSurfaceCharacterization createResized(int width, int height) const {
+        return *this;
+    }
+
+    SkSurfaceCharacterization createColorSpace(sk_sp<SkColorSpace>) const {
+        return *this;
+    }
+
+    SkSurfaceCharacterization createBackendFormat(SkColorType, const GrBackendFormat&) const {
+        return *this;
+    }
+
+    SkSurfaceCharacterization createFBO0(bool usesGLFBO0) const {
+        return *this;
+    }
+
+    bool operator==(const SkSurfaceCharacterization& other) const { return false; }
+    bool operator!=(const SkSurfaceCharacterization& other) const {
+        return !(*this == other);
+    }
+
+    size_t cacheMaxResourceBytes() const { return 0; }
+
+    bool isValid() const { return false; }
+
+    int width() const { return 0; }
+    int height() const { return 0; }
+    int stencilCount() const { return 0; }
+    bool isTextureable() const { return false; }
+    bool isMipMapped() const { return false; }
+    bool usesGLFBO0() const { return false; }
+    bool vkRTSupportsAttachmentInput() const { return false; }
+    bool vulkanSecondaryCBCompatible() const { return false; }
+    SkColorSpace* colorSpace() const { return nullptr; }
+    sk_sp<SkColorSpace> refColorSpace() const { return nullptr; }
+    const SkSurfaceProps& surfaceProps()const { return fSurfaceProps; }
+
+private:
+    SkSurfaceProps fSurfaceProps;
+};
+
+#endif
+
+#endif