1bcacfdcab0eaa0cee92bd7f5a1b5e271dd68e52 |
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03-Nov-2017 |
John Reck <jreck@google.com> |
Format the world (or just HWUI) Test: No code changes, just ran through clang-format Change-Id: Id23aa4ec7eebc0446fe3a30260f33e7fd455bb8c
/frameworks/base/libs/hwui/Vertex.h
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253f2c213f6ecda63b6872aee77bd30d5ec07c82 |
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29-Sep-2016 |
Romain Guy <romainguy@google.com> |
Linear blending, step 1 NOTE: Linear blending is currently disabled in this CL as the feature is still a work in progress Android currently performs all blending (any kind of linear math on colors really) on gamma-encoded colors. Since Android assumes that the default color space is sRGB, all bitmaps and colors are encoded with the sRGB Opto-Electronic Conversion Function (OECF, which can be approximated with a power function). Since the power curve is not linear, our linear math is incorrect. The result is that we generate colors that tend to be too dark; this affects blending but also anti-aliasing, gradients, blurs, etc. The solution is to convert gamma-encoded colors back to linear space before doing any math on them, using the sRGB Electo-Optical Conversion Function (EOCF). This is achieved in different ways in different parts of the pipeline: - Using hardware conversions when sampling from OpenGL textures or writing into OpenGL frame buffers - Using software conversion functions, to translate app-supplied colors to and from sRGB - Using Skia's color spaces Any type of processing on colors must roughly ollow these steps: [sRGB input]->EOCF->[linear data]->[processing]->OECF->[sRGB output] For the sRGB color space, the conversion functions are defined as follows: OECF(linear) := linear <= 0.0031308 ? linear * 12.92 : (pow(linear, 1/2.4) * 1.055) - 0.055 EOCF(srgb) := srgb <= 0.04045 ? srgb / 12.92 : pow((srgb + 0.055) / 1.055, 2.4) The EOCF is simply the reciprocal of the OECF. While it is highly recommended to use the exact sRGB conversion functions everywhere possible, it is sometimes useful or beneficial to rely on approximations: - pow(x,2.2) and pow(x,1/2.2) - x^2 and sqrt(x) The latter is particularly useful in fragment shaders (for instance to apply dithering in sRGB space), especially if the sqrt() can be replaced with an inversesqrt(). Here is a fairly exhaustive list of modifications implemented in this CL: - Set TARGET_ENABLE_LINEAR_BLENDING := false in BoardConfig.mk to disable linear blending. This is only for GLES 2.0 GPUs with no hardware sRGB support. This flag is currently assumed to be false (see note above) - sRGB writes are disabled when entering a functor (WebView). This will need to be fixed at some point - Skia bitmaps are created with the sRGB color space - Bitmaps using a 565 config are expanded to 888 - Linear blending is disabled when entering a functor - External textures are not properly sampled (see below) - Gradients are interpolated in linear space - Texture-based dithering was replaced with analytical dithering - Dithering is done in the quantization color space, which is why we must do EOCF(OECF(color)+dither) - Text is now gamma corrected differently depending on the luminance of the source pixel. The asumption is that a bright pixel will be blended on a dark background and the other way around. The source alpha is gamma corrected to thicken dark on bright and thin bright on dark to match the intended design of fonts. This also matches the behavior of popular design/drawing applications - Removed the asset atlas. It did not contain anything useful and could not be sampled in sRGB without a yet-to-be-defined GL extension - The last column of color matrices is converted to linear space because its value are added to linear colors Missing features: - Resource qualifier? - Regeneration of goldeng images for automated tests - Handle alpha8/grey8 properly - Disable sRGB write for layers with external textures Test: Manual testing while work in progress Bug: 29940137 Change-Id: I6a07b15ab49b554377cd33a36b6d9971a15e9a0b
/frameworks/base/libs/hwui/Vertex.h
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272a685f17cc4828257e521a6f62b7b17870f75e |
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30-Jul-2015 |
John Reck <jreck@google.com> |
Replace most usages of utils/Vector.h Change-Id: I540d1b3523244d6c71fc52d6fb30555271c25644
/frameworks/base/libs/hwui/Vertex.h
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922d3a7f6f8c1c05a996ee3e91e8cbadfff560c9 |
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14-Feb-2015 |
Chris Craik <ccraik@google.com> |
Glop SkiaShader support Change-Id: I894a0b62701bd02367ab970813e4c332147351a2
/frameworks/base/libs/hwui/Vertex.h
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0519c810a56bded1284fcb2ae40f438878c6585f |
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11-Feb-2015 |
Chris Craik <ccraik@google.com> |
Glop Bitmap and RoundRect clipping support Change-Id: I4577546a5d2e5f084cc03f39a89db9231b8111ee
/frameworks/base/libs/hwui/Vertex.h
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a9fc9b20da43b0e5d01b10097d6f2e6fafcd6626 |
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22-Jan-2015 |
Rob Tsuk <robtsuk@google.com> |
Ensure compatible layout for vertices Require that these structs have standard layout, which is what we need to pass them to OpenGL. Inheritence with data members violates the rules for standard layout so I re-implemented them using templates to share the code and putting all the data members in each struct. Change-Id: I19cd0e5518728f2d3e0993b17d15fce7be7e0edb
/frameworks/base/libs/hwui/Vertex.h
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51d6a3db97bdd5315f1a17a4b447d10a92217b98 |
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23-Dec-2014 |
Chris Craik <ccraik@google.com> |
Cleanup various clang warnings, use unique_ptrs in several places Change-Id: I347904b25e51fcc7de14b1e72f1acd0f6ba26f3f
/frameworks/base/libs/hwui/Vertex.h
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1aa5d2d7068147ff781cfe911a93f01593a68c79 |
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24-Jul-2014 |
John Reck <jreck@google.com> |
Fix ALL compile warnings All warnings/errors fixed for GCC & Clang Change-Id: I2ece3a136a5ae97a9acc3069537ed986238b5fd3
/frameworks/base/libs/hwui/Vertex.h
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564acf7c9bff822f608cda0d5df0a64a9f9aaefd |
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03-Jan-2014 |
Chris Craik <ccraik@google.com> |
Fix Clang warnings/errors Fix several build warnings (struct != class, int != size_t) and errors (variable leng non-POD arrays). Change-Id: I70b4e784365514303d8954bfcb1f39d7c22c1321
/frameworks/base/libs/hwui/Vertex.h
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2765c0b71679b5762ed72610e8310abd6d071b96 |
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18-Sep-2013 |
Chris Craik <ccraik@google.com> |
resolved conflicts for merge of d97303a7 to master Change-Id: I29e2e64e0ec241675762482cbe5c5e9dc58adca6
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32f05e343c5ffb17f3235942bcda651bd3b9f1d6 |
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18-Sep-2013 |
Chris Craik <ccraik@google.com> |
Conservatively estimate geometry bounds bug:10761696 Avoids a case where a rect with top coordinate of (e.g.) 0.51f is assumed to not draw in the first row of pixels, which leads to it not being clipped. Since rounding can cause it to render in this first pixel anyway, we very slightly expand geometry bounds. Now, in ambiguous cases, the geometry bounds are expanded so clipping is more likely to happen. Change-Id: I119b7c7720de07bac1634549724ffb63935567fc
/frameworks/base/libs/hwui/Vertex.h
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3380cfdc77100e87aa8390386ccf390834dea171 |
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16-Aug-2013 |
Romain Guy <romainguy@google.com> |
Replace float arrays with readable names Change-Id: I32a8be560b60a4ac5cbee2fec4574b2c5df9f825
/frameworks/base/libs/hwui/Vertex.h
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6d29c8d5218cac0fb35f3b7c253f2bdebd44f15a |
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09-May-2013 |
Chris Craik <ccraik@google.com> |
Add tessellation path for points bug:4351353 bug:8185479 Point tessellation is similar to line special case, except that we only tessellate one point (as a circle or rect) and duplicate it across other instances. Additionally: Fixes square caps for AA=false lines Cleanup in CanvasCompare, disabling interpolation on zoomed-in comparison view Change-Id: I0756fcc4b20f77878fed0d8057297c80e82ed9dc
/frameworks/base/libs/hwui/Vertex.h
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ff316ec7a76e52572a2e89b691e6b3bba0cafba3 |
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14-Feb-2013 |
Romain Guy <romainguy@google.com> |
Implement support for drawBitmapMesh's colors array Change-Id: I3d901f6267c2918771ac30ff55c8d80c3ab5b725
/frameworks/base/libs/hwui/Vertex.h
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65cd612face362d054a85d0f7e5881c59cd523be |
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11-Dec-2012 |
Chris Craik <ccraik@google.com> |
Add cap tessellation support bug:7117155 bug:8114304 Currently used for lines (with and without AA) and arcs with useCenter=false Also removes 0.375, 0.375 offset for AA lines Change-Id: Ic8ace418739344db1e2814edf65253fe7448b0b0
/frameworks/base/libs/hwui/Vertex.h
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99585adeb4167ca357a72eb866f34c1af944f4b9 |
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03-May-2011 |
Chet Haase <chet@google.com> |
Line endcaps for AA lines are now antialiased. Also fixed other minor issues with AA and line rendering. Change-Id: Icd4638d27c70e2ee0f28b5d9a2b97d8b29e8ac4d
/frameworks/base/libs/hwui/Vertex.h
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5b0200bd47e8a9a4dc8d2e6c3a110d522b30bf82 |
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14-Apr-2011 |
Chet Haase <chet@google.com> |
Enable anti-aliasing for hw-accelerated lines Draw anti-aliased lines with OpenGL by constructing a quad with a border that fades out (to mimic fragment coverage). Change-Id: Ib81a3e62d663acdf1b46b401ac4aa7ee9855cc7e
/frameworks/base/libs/hwui/Vertex.h
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5b3b35296e8b2c8d3f07d32bb645d5414db41a1d |
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28-Oct-2010 |
Romain Guy <romainguy@google.com> |
Optimize FBO drawing with regions. This optimization is currently disabled until Launcher is modified to take advantage of it. The optimization can be enabled by turning on RENDER_LAYERS_AS_REGIONS in the OpenGLRenderer.h file. Change-Id: I2fdf59d0f4dc690a3d7f712173ab8db3848b27b1
/frameworks/base/libs/hwui/Vertex.h
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ac670c0433d19397d4e36ced2110475b6f54fe26 |
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28-Jul-2010 |
Romain Guy <romainguy@google.com> |
Generate shaders to cover all possible cases. With this change, all the vertex and fragment shaders used by the GL renderer are now generated based on a program description supplied by the caller. This allows the renderer to generate a large number of shaders without having to write all the possible combinations by hand. The generated shaders are stored in a program cache. Change-Id: If54d286e77ae021c724d42090da476df12a18ebb
/frameworks/base/libs/hwui/Vertex.h
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82ba814ca0dea659be2cc6523bc0137679d961ce |
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09-Jul-2010 |
Romain Guy <romainguy@google.com> |
Optimize blending state changes. Change-Id: I7c22a8aecccb8b5abfcf7243f049a4ef3cf3979a
/frameworks/base/libs/hwui/Vertex.h
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f7f93556c8fcc640ab5adef79d021a80a72a645a |
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09-Jul-2010 |
Romain Guy <romainguy@google.com> |
Draw n-patches using OpenGL. Currently only tested with title bars and buttons. Change-Id: I8263a9281898dc0e943b1b8412827fe55639b9d6
/frameworks/base/libs/hwui/Vertex.h
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