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| author | Romain Guy <romainguy@google.com> | 2010-07-27 19:53:33 -0700 |
|---|---|---|
| committer | Android (Google) Code Review <android-gerrit@google.com> | 2010-07-27 19:53:33 -0700 |
| commit | 85d8daa889db113b51c5d98929245e80f7277388 (patch) | |
| tree | c20b40f4ea72fc2010fb6edf9cc1e1c5d76f2714 /libs/hwui/ProgramCache.h | |
| parent | 8b67752c82a26e21fe0977cb5e201acf2e22824d (diff) | |
| parent | ac670c0433d19397d4e36ced2110475b6f54fe26 (diff) | |
| download | frameworks_base-85d8daa889db113b51c5d98929245e80f7277388.zip frameworks_base-85d8daa889db113b51c5d98929245e80f7277388.tar.gz frameworks_base-85d8daa889db113b51c5d98929245e80f7277388.tar.bz2 | |
Merge "Generate shaders to cover all possible cases."
Diffstat (limited to 'libs/hwui/ProgramCache.h')
| -rw-r--r-- | libs/hwui/ProgramCache.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/libs/hwui/ProgramCache.h b/libs/hwui/ProgramCache.h new file mode 100644 index 0000000..7f2f5fa --- /dev/null +++ b/libs/hwui/ProgramCache.h @@ -0,0 +1,155 @@ +/* + * Copyright (C) 2010 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. + */ + +#ifndef ANDROID_UI_PROGRAM_CACHE_H +#define ANDROID_UI_PROGRAM_CACHE_H + +#include <utils/KeyedVector.h> +#include <utils/Log.h> + +#include <SkXfermode.h> + +#include "Program.h" + +namespace android { +namespace uirenderer { + +/////////////////////////////////////////////////////////////////////////////// +// Defines +/////////////////////////////////////////////////////////////////////////////// + +// Debug +#define DEBUG_PROGRAM_CACHE 0 + +// Debug +#if DEBUG_PROGRAM_CACHE + #define PROGRAM_LOGD(...) LOGD(__VA_ARGS__) +#else + #define PROGRAM_LOGD(...) +#endif + +#define PROGRAM_KEY_TEXTURE 0x1 +#define PROGRAM_KEY_A8_TEXTURE 0x2 +#define PROGRAM_KEY_BITMAP 0x4 +#define PROGRAM_KEY_GRADIENT 0x8 +#define PROGRAM_KEY_BITMAP_FIRST 0x10 +#define PROGRAM_KEY_COLOR_MATRIX 0x20 +#define PROGRAM_KEY_COLOR_LIGHTING 0x40 +#define PROGRAM_KEY_COLOR_BLEND 0x80 + +// Support only the 12 Porter-Duff modes for now +#define PROGRAM_MAX_XFERMODE 0xC +#define PROGRAM_XFERMODE_SHADER_SHIFT 24 +#define PROGRAM_XFERMODE_COLOR_OP_SHIFT 20 + +/////////////////////////////////////////////////////////////////////////////// +// Types +/////////////////////////////////////////////////////////////////////////////// + +typedef uint32_t programid; + +/////////////////////////////////////////////////////////////////////////////// +// Cache +/////////////////////////////////////////////////////////////////////////////// + +/** + * Describe the features required for a given program. The features + * determine the generation of both the vertex and fragment shaders. + * A ProgramDescription must be used in conjunction with a ProgramCache. + */ +struct ProgramDescription { + enum ColorModifier { + kColorNone, + kColorMatrix, + kColorLighting, + kColorBlend + }; + + ProgramDescription(): + hasTexture(false), hasAlpha8Texture(false), + hasBitmap(false), hasGradient(false), shadersMode(SkXfermode::kClear_Mode), + colorOp(kColorNone), colorMode(SkXfermode::kClear_Mode) { + } + + // Texturing + bool hasTexture; + bool hasAlpha8Texture; + + // Shaders + bool hasBitmap; + bool hasGradient; + SkXfermode::Mode shadersMode; + bool isBitmapFirst; + + // Color operations + int colorOp; + SkXfermode::Mode colorMode; + + programid key() const { + programid key = 0; + if (hasTexture) key |= PROGRAM_KEY_TEXTURE; + if (hasAlpha8Texture) key |= PROGRAM_KEY_A8_TEXTURE; + if (hasBitmap) key |= PROGRAM_KEY_BITMAP; + if (hasGradient) key |= PROGRAM_KEY_GRADIENT; + if (isBitmapFirst) key |= PROGRAM_KEY_BITMAP_FIRST; + if (hasBitmap && hasGradient) { + key |= (shadersMode & PROGRAM_MAX_XFERMODE) << PROGRAM_XFERMODE_SHADER_SHIFT; + } + switch (colorOp) { + case kColorMatrix: + key |= PROGRAM_KEY_COLOR_MATRIX; + break; + case kColorLighting: + key |= PROGRAM_KEY_COLOR_LIGHTING; + break; + case kColorBlend: + key |= PROGRAM_KEY_COLOR_BLEND; + key |= (colorMode & PROGRAM_MAX_XFERMODE) << PROGRAM_XFERMODE_COLOR_OP_SHIFT; + break; + case kColorNone: + break; + } + return key; + } +}; // struct ProgramDescription + +/** + * Generates and caches program. Programs are generated based on + * ProgramDescriptions. + */ +class ProgramCache { +public: + ProgramCache(); + ~ProgramCache(); + + Program* get(const ProgramDescription& description); + + void clear(); + +private: + Program* generateProgram(const ProgramDescription& description, programid key); + String8 generateVertexShader(const ProgramDescription& description); + String8 generateFragmentShader(const ProgramDescription& description); + void generatePorterDuffBlend(String8& shader, const char* name, SkXfermode::Mode mode); + + KeyedVector<programid, Program*> mCache; + +}; // class ProgramCache + +}; // namespace uirenderer +}; // namespace android + +#endif // ANDROID_UI_PROGRAM_CACHE_H |