Merge "Revert "TextureView Vulkan support and optimized OpenGL draw""

1 files changed, 413 insertions, 0 deletions

diff --git a/libs/hwui/Texture.cpp b/libs/hwui/Texture.cpp
new file mode 100644
index 000000000000..1e90eebe3bb8
--- /dev/null
+++ b/libs/hwui/Texture.cpp
@@ -0,0 +1,413 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include "Texture.h"
+#include "Caches.h"
+#include "utils/GLUtils.h"
+#include "utils/MathUtils.h"
+#include "utils/TraceUtils.h"
+
+#include <utils/Log.h>
+
+#include <math/mat4.h>
+
+#include <SkCanvas.h>
+
+namespace android {
+namespace uirenderer {
+
+// Number of bytes used by a texture in the given format
+static int bytesPerPixel(GLint glFormat) {
+    switch (glFormat) {
+        // The wrapped-texture case, usually means a SurfaceTexture
+        case 0:
+            return 0;
+        case GL_LUMINANCE:
+        case GL_ALPHA:
+            return 1;
+        case GL_SRGB8:
+        case GL_RGB:
+            return 3;
+        case GL_SRGB8_ALPHA8:
+        case GL_RGBA:
+            return 4;
+        case GL_RGBA16F:
+            return 8;
+        default:
+            LOG_ALWAYS_FATAL("UNKNOWN FORMAT 0x%x", glFormat);
+    }
+}
+
+void Texture::setWrapST(GLenum wrapS, GLenum wrapT, bool bindTexture, bool force) {
+    if (force || wrapS != mWrapS || wrapT != mWrapT) {
+        mWrapS = wrapS;
+        mWrapT = wrapT;
+
+        if (bindTexture) {
+            mCaches.textureState().bindTexture(mTarget, mId);
+        }
+
+        glTexParameteri(mTarget, GL_TEXTURE_WRAP_S, wrapS);
+        glTexParameteri(mTarget, GL_TEXTURE_WRAP_T, wrapT);
+    }
+}
+
+void Texture::setFilterMinMag(GLenum min, GLenum mag, bool bindTexture, bool force) {
+    if (force || min != mMinFilter || mag != mMagFilter) {
+        mMinFilter = min;
+        mMagFilter = mag;
+
+        if (bindTexture) {
+            mCaches.textureState().bindTexture(mTarget, mId);
+        }
+
+        if (mipMap && min == GL_LINEAR) min = GL_LINEAR_MIPMAP_LINEAR;
+
+        glTexParameteri(mTarget, GL_TEXTURE_MIN_FILTER, min);
+        glTexParameteri(mTarget, GL_TEXTURE_MAG_FILTER, mag);
+    }
+}
+
+void Texture::deleteTexture() {
+    mCaches.textureState().deleteTexture(mId);
+    mId = 0;
+    mTarget = GL_NONE;
+    if (mEglImageHandle != EGL_NO_IMAGE_KHR) {
+        EGLDisplay eglDisplayHandle = eglGetCurrentDisplay();
+        eglDestroyImageKHR(eglDisplayHandle, mEglImageHandle);
+        mEglImageHandle = EGL_NO_IMAGE_KHR;
+    }
+}
+
+bool Texture::updateLayout(uint32_t width, uint32_t height, GLint internalFormat, GLint format,
+                           GLenum target) {
+    if (mWidth == width && mHeight == height && mFormat == format &&
+        mInternalFormat == internalFormat && mTarget == target) {
+        return false;
+    }
+    mWidth = width;
+    mHeight = height;
+    mFormat = format;
+    mInternalFormat = internalFormat;
+    mTarget = target;
+    notifySizeChanged(mWidth * mHeight * bytesPerPixel(internalFormat));
+    return true;
+}
+
+void Texture::resetCachedParams() {
+    mWrapS = GL_REPEAT;
+    mWrapT = GL_REPEAT;
+    mMinFilter = GL_NEAREST_MIPMAP_LINEAR;
+    mMagFilter = GL_LINEAR;
+}
+
+void Texture::upload(GLint internalFormat, uint32_t width, uint32_t height, GLenum format,
+                     GLenum type, const void* pixels) {
+    GL_CHECKPOINT(MODERATE);
+
+    // We don't have color space information, we assume the data is gamma encoded
+    mIsLinear = false;
+
+    bool needsAlloc = updateLayout(width, height, internalFormat, format, GL_TEXTURE_2D);
+    if (!mId) {
+        glGenTextures(1, &mId);
+        needsAlloc = true;
+        resetCachedParams();
+    }
+    mCaches.textureState().bindTexture(GL_TEXTURE_2D, mId);
+    if (needsAlloc) {
+        glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, mWidth, mHeight, 0, format, type, pixels);
+    } else if (pixels) {
+        glTexSubImage2D(GL_TEXTURE_2D, 0, internalFormat, mWidth, mHeight, 0, format, type, pixels);
+    }
+    GL_CHECKPOINT(MODERATE);
+}
+
+void Texture::uploadHardwareBitmapToTexture(GraphicBuffer* buffer) {
+    EGLDisplay eglDisplayHandle = eglGetCurrentDisplay();
+    if (mEglImageHandle != EGL_NO_IMAGE_KHR) {
+        eglDestroyImageKHR(eglDisplayHandle, mEglImageHandle);
+        mEglImageHandle = EGL_NO_IMAGE_KHR;
+    }
+    mEglImageHandle = eglCreateImageKHR(eglDisplayHandle, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
+                                        buffer->getNativeBuffer(), 0);
+    glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, mEglImageHandle);
+}
+
+static void uploadToTexture(bool resize, GLint internalFormat, GLenum format, GLenum type,
+                            GLsizei stride, GLsizei bpp, GLsizei width, GLsizei height,
+                            const GLvoid* data) {
+    const bool useStride =
+            stride != width && Caches::getInstance().extensions().hasUnpackRowLength();
+    if ((stride == width) || useStride) {
+        if (useStride) {
+            glPixelStorei(GL_UNPACK_ROW_LENGTH, stride);
+        }
+
+        if (resize) {
+            glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type, data);
+        } else {
+            glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, data);
+        }
+
+        if (useStride) {
+            glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+        }
+    } else {
+        //  With OpenGL ES 2.0 we need to copy the bitmap in a temporary buffer
+        //  if the stride doesn't match the width
+
+        GLvoid* temp = (GLvoid*)malloc(width * height * bpp);
+        if (!temp) return;
+
+        uint8_t* pDst = (uint8_t*)temp;
+        uint8_t* pSrc = (uint8_t*)data;
+        for (GLsizei i = 0; i < height; i++) {
+            memcpy(pDst, pSrc, width * bpp);
+            pDst += width * bpp;
+            pSrc += stride * bpp;
+        }
+
+        if (resize) {
+            glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type, temp);
+        } else {
+            glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, temp);
+        }
+
+        free(temp);
+    }
+}
+
+void Texture::colorTypeToGlFormatAndType(const Caches& caches, SkColorType colorType, bool needSRGB,
+                                         GLint* outInternalFormat, GLint* outFormat,
+                                         GLint* outType) {
+    switch (colorType) {
+        case kAlpha_8_SkColorType:
+            *outFormat = GL_ALPHA;
+            *outInternalFormat = GL_ALPHA;
+            *outType = GL_UNSIGNED_BYTE;
+            break;
+        case kRGB_565_SkColorType:
+            if (needSRGB) {
+                // We would ideally use a GL_RGB/GL_SRGB8 texture but the
+                // intermediate Skia bitmap needs to be ARGB_8888
+                *outFormat = GL_RGBA;
+                *outInternalFormat = caches.rgbaInternalFormat();
+                *outType = GL_UNSIGNED_BYTE;
+            } else {
+                *outFormat = GL_RGB;
+                *outInternalFormat = GL_RGB;
+                *outType = GL_UNSIGNED_SHORT_5_6_5;
+            }
+            break;
+        // ARGB_4444 is upconverted to RGBA_8888
+        case kARGB_4444_SkColorType:
+        case kN32_SkColorType:
+            *outFormat = GL_RGBA;
+            *outInternalFormat = caches.rgbaInternalFormat(needSRGB);
+            *outType = GL_UNSIGNED_BYTE;
+            break;
+        case kGray_8_SkColorType:
+            *outFormat = GL_LUMINANCE;
+            *outInternalFormat = GL_LUMINANCE;
+            *outType = GL_UNSIGNED_BYTE;
+            break;
+        case kRGBA_F16_SkColorType:
+            if (caches.extensions().getMajorGlVersion() >= 3) {
+                // This format is always linear
+                *outFormat = GL_RGBA;
+                *outInternalFormat = GL_RGBA16F;
+                *outType = GL_HALF_FLOAT;
+            } else {
+                *outFormat = GL_RGBA;
+                *outInternalFormat = caches.rgbaInternalFormat(true);
+                *outType = GL_UNSIGNED_BYTE;
+            }
+            break;
+        default:
+            LOG_ALWAYS_FATAL("Unsupported bitmap colorType: %d", colorType);
+            break;
+    }
+}
+
+SkBitmap Texture::uploadToN32(const SkBitmap& bitmap, bool hasLinearBlending,
+                              sk_sp<SkColorSpace> sRGB) {
+    SkBitmap rgbaBitmap;
+    rgbaBitmap.allocPixels(SkImageInfo::MakeN32(bitmap.width(), bitmap.height(),
+                                                bitmap.info().alphaType(),
+                                                hasLinearBlending ? sRGB : nullptr));
+    rgbaBitmap.eraseColor(0);
+
+    if (bitmap.colorType() == kRGBA_F16_SkColorType) {
+        // Drawing RGBA_F16 onto ARGB_8888 is not supported
+        bitmap.readPixels(rgbaBitmap.info().makeColorSpace(SkColorSpace::MakeSRGB()),
+                          rgbaBitmap.getPixels(), rgbaBitmap.rowBytes(), 0, 0);
+    } else {
+        SkCanvas canvas(rgbaBitmap);
+        canvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
+    }
+
+    return rgbaBitmap;
+}
+
+bool Texture::hasUnsupportedColorType(const SkImageInfo& info, bool hasLinearBlending) {
+    return info.colorType() == kARGB_4444_SkColorType ||
+           (info.colorType() == kRGB_565_SkColorType && hasLinearBlending &&
+            info.colorSpace()->isSRGB()) ||
+           (info.colorType() == kRGBA_F16_SkColorType &&
+            Caches::getInstance().extensions().getMajorGlVersion() < 3);
+}
+
+void Texture::upload(Bitmap& bitmap) {
+    ATRACE_FORMAT("Upload %ux%u Texture", bitmap.width(), bitmap.height());
+
+    // We could also enable mipmapping if both bitmap dimensions are powers
+    // of 2 but we'd have to deal with size changes. Let's keep this simple
+    const bool canMipMap = mCaches.extensions().hasNPot();
+
+    // If the texture had mipmap enabled but not anymore,
+    // force a glTexImage2D to discard the mipmap levels
+    bool needsAlloc = canMipMap && mipMap && !bitmap.hasHardwareMipMap();
+    bool setDefaultParams = false;
+
+    if (!mId) {
+        glGenTextures(1, &mId);
+        needsAlloc = true;
+        setDefaultParams = true;
+    }
+
+    bool hasLinearBlending = mCaches.extensions().hasLinearBlending();
+    bool needSRGB = transferFunctionCloseToSRGB(bitmap.info().colorSpace());
+
+    GLint internalFormat, format, type;
+    colorTypeToGlFormatAndType(mCaches, bitmap.colorType(), needSRGB && hasLinearBlending,
+                               &internalFormat, &format, &type);
+
+    // Some devices don't support GL_RGBA16F, so we need to compare the color type
+    // and internal GL format to decide what to do with 16 bit bitmaps
+    bool rgba16fNeedsConversion =
+            bitmap.colorType() == kRGBA_F16_SkColorType && internalFormat != GL_RGBA16F;
+
+    // RGBA16F is always linear extended sRGB
+    if (internalFormat == GL_RGBA16F) {
+        mIsLinear = true;
+    }
+
+    mConnector.reset();
+
+    // Alpha masks don't have color profiles
+    // If an RGBA16F bitmap needs conversion, we know the target will be sRGB
+    if (!mIsLinear && internalFormat != GL_ALPHA && !rgba16fNeedsConversion) {
+        SkColorSpace* colorSpace = bitmap.info().colorSpace();
+        // If the bitmap is sRGB we don't need conversion
+        if (colorSpace != nullptr && !colorSpace->isSRGB()) {
+            SkMatrix44 xyzMatrix(SkMatrix44::kUninitialized_Constructor);
+            if (!colorSpace->toXYZD50(&xyzMatrix)) {
+                ALOGW("Incompatible color space!");
+            } else {
+                SkColorSpaceTransferFn fn;
+                if (!colorSpace->isNumericalTransferFn(&fn)) {
+                    ALOGW("Incompatible color space, no numerical transfer function!");
+                } else {
+                    float data[16];
+                    xyzMatrix.asColMajorf(data);
+
+                    ColorSpace::TransferParameters p = {fn.fG, fn.fA, fn.fB, fn.fC,
+                                                        fn.fD, fn.fE, fn.fF};
+                    ColorSpace src("Unnamed", mat4f((const float*)&data[0]).upperLeft(), p);
+                    mConnector.reset(new ColorSpaceConnector(src, ColorSpace::sRGB()));
+
+                    // A non-sRGB color space might have a transfer function close enough to sRGB
+                    // that we can save shader instructions by using an sRGB sampler
+                    // This is only possible if we have hardware support for sRGB textures
+                    if (needSRGB && internalFormat == GL_RGBA && mCaches.extensions().hasSRGB() &&
+                        !bitmap.isHardware()) {
+                        internalFormat = GL_SRGB8_ALPHA8;
+                    }
+                }
+            }
+        }
+    }
+
+    GLenum target = bitmap.isHardware() ? GL_TEXTURE_EXTERNAL_OES : GL_TEXTURE_2D;
+    needsAlloc |= updateLayout(bitmap.width(), bitmap.height(), internalFormat, format, target);
+
+    blend = !bitmap.isOpaque();
+    mCaches.textureState().bindTexture(mTarget, mId);
+
+    // TODO: Handle sRGB gray bitmaps
+    if (CC_UNLIKELY(hasUnsupportedColorType(bitmap.info(), hasLinearBlending))) {
+        SkBitmap skBitmap;
+        bitmap.getSkBitmap(&skBitmap);
+        sk_sp<SkColorSpace> sRGB = SkColorSpace::MakeSRGB();
+        SkBitmap rgbaBitmap = uploadToN32(skBitmap, hasLinearBlending, std::move(sRGB));
+        uploadToTexture(needsAlloc, internalFormat, format, type, rgbaBitmap.rowBytesAsPixels(),
+                        rgbaBitmap.bytesPerPixel(), rgbaBitmap.width(), rgbaBitmap.height(),
+                        rgbaBitmap.getPixels());
+    } else if (bitmap.isHardware()) {
+        uploadHardwareBitmapToTexture(bitmap.graphicBuffer());
+    } else {
+        uploadToTexture(needsAlloc, internalFormat, format, type, bitmap.rowBytesAsPixels(),
+                        bitmap.info().bytesPerPixel(), bitmap.width(), bitmap.height(),
+                        bitmap.pixels());
+    }
+
+    if (canMipMap) {
+        mipMap = bitmap.hasHardwareMipMap();
+        if (mipMap) {
+            glGenerateMipmap(GL_TEXTURE_2D);
+        }
+    }
+
+    if (setDefaultParams) {
+        setFilter(GL_NEAREST);
+        setWrap(GL_CLAMP_TO_EDGE);
+    }
+}
+
+void Texture::wrap(GLuint id, uint32_t width, uint32_t height, GLint internalFormat, GLint format,
+                   GLenum target) {
+    mId = id;
+    mWidth = width;
+    mHeight = height;
+    mFormat = format;
+    mInternalFormat = internalFormat;
+    mTarget = target;
+    mConnector.reset();
+    // We're wrapping an existing texture, so don't double count this memory
+    notifySizeChanged(0);
+}
+
+TransferFunctionType Texture::getTransferFunctionType() const {
+    if (mConnector.get() != nullptr && mInternalFormat != GL_SRGB8_ALPHA8) {
+        const ColorSpace::TransferParameters& p = mConnector->getSource().getTransferParameters();
+        if (MathUtils::isZero(p.e) && MathUtils::isZero(p.f)) {
+            if (MathUtils::areEqual(p.a, 1.0f) && MathUtils::isZero(p.b) &&
+                MathUtils::isZero(p.c) && MathUtils::isZero(p.d)) {
+                if (MathUtils::areEqual(p.g, 1.0f)) {
+                    return TransferFunctionType::None;
+                }
+                return TransferFunctionType::Gamma;
+            }
+            return TransferFunctionType::Limited;
+        }
+        return TransferFunctionType::Full;
+    }
+    return TransferFunctionType::None;
+}
+
+};  // namespace uirenderer
+};  // namespace android