| /* |
| * Copyright (C) 2009 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef GraphicsContext3D_h |
| #define GraphicsContext3D_h |
| |
| #include "core/platform/graphics/Extensions3D.h" |
| #include "core/platform/graphics/GraphicsTypes3D.h" |
| #include "core/platform/graphics/Image.h" |
| #include "core/platform/graphics/IntRect.h" |
| #include "third_party/skia/include/core/SkBitmap.h" |
| #include "weborigin/KURL.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/HashSet.h" |
| #include "wtf/ListHashSet.h" |
| #include "wtf/Noncopyable.h" |
| #include "wtf/OwnArrayPtr.h" |
| #include "wtf/OwnPtr.h" |
| #include "wtf/PassOwnArrayPtr.h" |
| #include "wtf/RefCounted.h" |
| #include "wtf/text/WTFString.h" |
| |
| // FIXME: Find a better way to avoid the name confliction for NO_ERROR. |
| #if OS(WIN) |
| #undef NO_ERROR |
| #endif |
| |
| class GrContext; |
| |
| namespace WebKit { |
| class WebGraphicsContext3D; |
| class WebGraphicsContext3DProvider; |
| } |
| |
| namespace WebCore { |
| class DrawingBuffer; |
| class Extensions3D; |
| class GraphicsContext3DContextLostCallbackAdapter; |
| class GraphicsContext3DErrorMessageCallbackAdapter; |
| class GrMemoryAllocationChangedCallbackAdapter; |
| class Image; |
| class ImageBuffer; |
| class ImageData; |
| class IntRect; |
| class IntSize; |
| |
| struct ActiveInfo { |
| String name; |
| GC3Denum type; |
| GC3Dint size; |
| }; |
| |
| class GraphicsContext3D : public RefCounted<GraphicsContext3D> { |
| public: |
| enum { |
| DEPTH_BUFFER_BIT = 0x00000100, |
| STENCIL_BUFFER_BIT = 0x00000400, |
| COLOR_BUFFER_BIT = 0x00004000, |
| POINTS = 0x0000, |
| LINES = 0x0001, |
| LINE_LOOP = 0x0002, |
| LINE_STRIP = 0x0003, |
| TRIANGLES = 0x0004, |
| TRIANGLE_STRIP = 0x0005, |
| TRIANGLE_FAN = 0x0006, |
| ZERO = 0, |
| ONE = 1, |
| SRC_COLOR = 0x0300, |
| ONE_MINUS_SRC_COLOR = 0x0301, |
| SRC_ALPHA = 0x0302, |
| ONE_MINUS_SRC_ALPHA = 0x0303, |
| DST_ALPHA = 0x0304, |
| ONE_MINUS_DST_ALPHA = 0x0305, |
| DST_COLOR = 0x0306, |
| ONE_MINUS_DST_COLOR = 0x0307, |
| SRC_ALPHA_SATURATE = 0x0308, |
| FUNC_ADD = 0x8006, |
| BLEND_EQUATION = 0x8009, |
| BLEND_EQUATION_RGB = 0x8009, |
| BLEND_EQUATION_ALPHA = 0x883D, |
| FUNC_SUBTRACT = 0x800A, |
| FUNC_REVERSE_SUBTRACT = 0x800B, |
| BLEND_DST_RGB = 0x80C8, |
| BLEND_SRC_RGB = 0x80C9, |
| BLEND_DST_ALPHA = 0x80CA, |
| BLEND_SRC_ALPHA = 0x80CB, |
| CONSTANT_COLOR = 0x8001, |
| ONE_MINUS_CONSTANT_COLOR = 0x8002, |
| CONSTANT_ALPHA = 0x8003, |
| ONE_MINUS_CONSTANT_ALPHA = 0x8004, |
| BLEND_COLOR = 0x8005, |
| ARRAY_BUFFER = 0x8892, |
| ELEMENT_ARRAY_BUFFER = 0x8893, |
| ARRAY_BUFFER_BINDING = 0x8894, |
| ELEMENT_ARRAY_BUFFER_BINDING = 0x8895, |
| STREAM_DRAW = 0x88E0, |
| STATIC_DRAW = 0x88E4, |
| DYNAMIC_DRAW = 0x88E8, |
| BUFFER_SIZE = 0x8764, |
| BUFFER_USAGE = 0x8765, |
| CURRENT_VERTEX_ATTRIB = 0x8626, |
| FRONT = 0x0404, |
| BACK = 0x0405, |
| FRONT_AND_BACK = 0x0408, |
| TEXTURE_2D = 0x0DE1, |
| CULL_FACE = 0x0B44, |
| BLEND = 0x0BE2, |
| DITHER = 0x0BD0, |
| STENCIL_TEST = 0x0B90, |
| DEPTH_TEST = 0x0B71, |
| SCISSOR_TEST = 0x0C11, |
| POLYGON_OFFSET_FILL = 0x8037, |
| SAMPLE_ALPHA_TO_COVERAGE = 0x809E, |
| SAMPLE_COVERAGE = 0x80A0, |
| NO_ERROR = 0, |
| INVALID_ENUM = 0x0500, |
| INVALID_VALUE = 0x0501, |
| INVALID_OPERATION = 0x0502, |
| OUT_OF_MEMORY = 0x0505, |
| CW = 0x0900, |
| CCW = 0x0901, |
| LINE_WIDTH = 0x0B21, |
| ALIASED_POINT_SIZE_RANGE = 0x846D, |
| ALIASED_LINE_WIDTH_RANGE = 0x846E, |
| CULL_FACE_MODE = 0x0B45, |
| FRONT_FACE = 0x0B46, |
| DEPTH_RANGE = 0x0B70, |
| DEPTH_WRITEMASK = 0x0B72, |
| DEPTH_CLEAR_VALUE = 0x0B73, |
| DEPTH_FUNC = 0x0B74, |
| STENCIL_CLEAR_VALUE = 0x0B91, |
| STENCIL_FUNC = 0x0B92, |
| STENCIL_FAIL = 0x0B94, |
| STENCIL_PASS_DEPTH_FAIL = 0x0B95, |
| STENCIL_PASS_DEPTH_PASS = 0x0B96, |
| STENCIL_REF = 0x0B97, |
| STENCIL_VALUE_MASK = 0x0B93, |
| STENCIL_WRITEMASK = 0x0B98, |
| STENCIL_BACK_FUNC = 0x8800, |
| STENCIL_BACK_FAIL = 0x8801, |
| STENCIL_BACK_PASS_DEPTH_FAIL = 0x8802, |
| STENCIL_BACK_PASS_DEPTH_PASS = 0x8803, |
| STENCIL_BACK_REF = 0x8CA3, |
| STENCIL_BACK_VALUE_MASK = 0x8CA4, |
| STENCIL_BACK_WRITEMASK = 0x8CA5, |
| VIEWPORT = 0x0BA2, |
| SCISSOR_BOX = 0x0C10, |
| COLOR_CLEAR_VALUE = 0x0C22, |
| COLOR_WRITEMASK = 0x0C23, |
| UNPACK_ALIGNMENT = 0x0CF5, |
| PACK_ALIGNMENT = 0x0D05, |
| MAX_TEXTURE_SIZE = 0x0D33, |
| MAX_VIEWPORT_DIMS = 0x0D3A, |
| SUBPIXEL_BITS = 0x0D50, |
| RED_BITS = 0x0D52, |
| GREEN_BITS = 0x0D53, |
| BLUE_BITS = 0x0D54, |
| ALPHA_BITS = 0x0D55, |
| DEPTH_BITS = 0x0D56, |
| STENCIL_BITS = 0x0D57, |
| POLYGON_OFFSET_UNITS = 0x2A00, |
| POLYGON_OFFSET_FACTOR = 0x8038, |
| TEXTURE_BINDING_2D = 0x8069, |
| SAMPLE_BUFFERS = 0x80A8, |
| SAMPLES = 0x80A9, |
| SAMPLE_COVERAGE_VALUE = 0x80AA, |
| SAMPLE_COVERAGE_INVERT = 0x80AB, |
| NUM_COMPRESSED_TEXTURE_FORMATS = 0x86A2, |
| COMPRESSED_TEXTURE_FORMATS = 0x86A3, |
| DONT_CARE = 0x1100, |
| FASTEST = 0x1101, |
| NICEST = 0x1102, |
| GENERATE_MIPMAP_HINT = 0x8192, |
| BYTE = 0x1400, |
| UNSIGNED_BYTE = 0x1401, |
| SHORT = 0x1402, |
| UNSIGNED_SHORT = 0x1403, |
| INT = 0x1404, |
| UNSIGNED_INT = 0x1405, |
| FLOAT = 0x1406, |
| HALF_FLOAT_OES = 0x8D61, |
| FIXED = 0x140C, |
| DEPTH_COMPONENT = 0x1902, |
| ALPHA = 0x1906, |
| RGB = 0x1907, |
| RGBA = 0x1908, |
| BGRA = 0x80E1, |
| LUMINANCE = 0x1909, |
| LUMINANCE_ALPHA = 0x190A, |
| UNSIGNED_SHORT_4_4_4_4 = 0x8033, |
| UNSIGNED_SHORT_5_5_5_1 = 0x8034, |
| UNSIGNED_SHORT_5_6_5 = 0x8363, |
| FRAGMENT_SHADER = 0x8B30, |
| VERTEX_SHADER = 0x8B31, |
| MAX_VERTEX_ATTRIBS = 0x8869, |
| MAX_VERTEX_UNIFORM_VECTORS = 0x8DFB, |
| MAX_VARYING_VECTORS = 0x8DFC, |
| MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D, |
| MAX_VERTEX_TEXTURE_IMAGE_UNITS = 0x8B4C, |
| MAX_TEXTURE_IMAGE_UNITS = 0x8872, |
| MAX_FRAGMENT_UNIFORM_VECTORS = 0x8DFD, |
| SHADER_TYPE = 0x8B4F, |
| DELETE_STATUS = 0x8B80, |
| LINK_STATUS = 0x8B82, |
| VALIDATE_STATUS = 0x8B83, |
| ATTACHED_SHADERS = 0x8B85, |
| ACTIVE_UNIFORMS = 0x8B86, |
| ACTIVE_UNIFORM_MAX_LENGTH = 0x8B87, |
| ACTIVE_ATTRIBUTES = 0x8B89, |
| ACTIVE_ATTRIBUTE_MAX_LENGTH = 0x8B8A, |
| SHADING_LANGUAGE_VERSION = 0x8B8C, |
| CURRENT_PROGRAM = 0x8B8D, |
| NEVER = 0x0200, |
| LESS = 0x0201, |
| EQUAL = 0x0202, |
| LEQUAL = 0x0203, |
| GREATER = 0x0204, |
| NOTEQUAL = 0x0205, |
| GEQUAL = 0x0206, |
| ALWAYS = 0x0207, |
| KEEP = 0x1E00, |
| REPLACE = 0x1E01, |
| INCR = 0x1E02, |
| DECR = 0x1E03, |
| INVERT = 0x150A, |
| INCR_WRAP = 0x8507, |
| DECR_WRAP = 0x8508, |
| VENDOR = 0x1F00, |
| RENDERER = 0x1F01, |
| VERSION = 0x1F02, |
| EXTENSIONS = 0x1F03, |
| NEAREST = 0x2600, |
| LINEAR = 0x2601, |
| NEAREST_MIPMAP_NEAREST = 0x2700, |
| LINEAR_MIPMAP_NEAREST = 0x2701, |
| NEAREST_MIPMAP_LINEAR = 0x2702, |
| LINEAR_MIPMAP_LINEAR = 0x2703, |
| TEXTURE_MAG_FILTER = 0x2800, |
| TEXTURE_MIN_FILTER = 0x2801, |
| TEXTURE_WRAP_S = 0x2802, |
| TEXTURE_WRAP_T = 0x2803, |
| TEXTURE = 0x1702, |
| TEXTURE_CUBE_MAP = 0x8513, |
| TEXTURE_BINDING_CUBE_MAP = 0x8514, |
| TEXTURE_CUBE_MAP_POSITIVE_X = 0x8515, |
| TEXTURE_CUBE_MAP_NEGATIVE_X = 0x8516, |
| TEXTURE_CUBE_MAP_POSITIVE_Y = 0x8517, |
| TEXTURE_CUBE_MAP_NEGATIVE_Y = 0x8518, |
| TEXTURE_CUBE_MAP_POSITIVE_Z = 0x8519, |
| TEXTURE_CUBE_MAP_NEGATIVE_Z = 0x851A, |
| MAX_CUBE_MAP_TEXTURE_SIZE = 0x851C, |
| TEXTURE0 = 0x84C0, |
| TEXTURE1 = 0x84C1, |
| TEXTURE2 = 0x84C2, |
| TEXTURE3 = 0x84C3, |
| TEXTURE4 = 0x84C4, |
| TEXTURE5 = 0x84C5, |
| TEXTURE6 = 0x84C6, |
| TEXTURE7 = 0x84C7, |
| TEXTURE8 = 0x84C8, |
| TEXTURE9 = 0x84C9, |
| TEXTURE10 = 0x84CA, |
| TEXTURE11 = 0x84CB, |
| TEXTURE12 = 0x84CC, |
| TEXTURE13 = 0x84CD, |
| TEXTURE14 = 0x84CE, |
| TEXTURE15 = 0x84CF, |
| TEXTURE16 = 0x84D0, |
| TEXTURE17 = 0x84D1, |
| TEXTURE18 = 0x84D2, |
| TEXTURE19 = 0x84D3, |
| TEXTURE20 = 0x84D4, |
| TEXTURE21 = 0x84D5, |
| TEXTURE22 = 0x84D6, |
| TEXTURE23 = 0x84D7, |
| TEXTURE24 = 0x84D8, |
| TEXTURE25 = 0x84D9, |
| TEXTURE26 = 0x84DA, |
| TEXTURE27 = 0x84DB, |
| TEXTURE28 = 0x84DC, |
| TEXTURE29 = 0x84DD, |
| TEXTURE30 = 0x84DE, |
| TEXTURE31 = 0x84DF, |
| ACTIVE_TEXTURE = 0x84E0, |
| REPEAT = 0x2901, |
| CLAMP_TO_EDGE = 0x812F, |
| MIRRORED_REPEAT = 0x8370, |
| FLOAT_VEC2 = 0x8B50, |
| FLOAT_VEC3 = 0x8B51, |
| FLOAT_VEC4 = 0x8B52, |
| INT_VEC2 = 0x8B53, |
| INT_VEC3 = 0x8B54, |
| INT_VEC4 = 0x8B55, |
| BOOL = 0x8B56, |
| BOOL_VEC2 = 0x8B57, |
| BOOL_VEC3 = 0x8B58, |
| BOOL_VEC4 = 0x8B59, |
| FLOAT_MAT2 = 0x8B5A, |
| FLOAT_MAT3 = 0x8B5B, |
| FLOAT_MAT4 = 0x8B5C, |
| SAMPLER_2D = 0x8B5E, |
| SAMPLER_CUBE = 0x8B60, |
| VERTEX_ATTRIB_ARRAY_ENABLED = 0x8622, |
| VERTEX_ATTRIB_ARRAY_SIZE = 0x8623, |
| VERTEX_ATTRIB_ARRAY_STRIDE = 0x8624, |
| VERTEX_ATTRIB_ARRAY_TYPE = 0x8625, |
| VERTEX_ATTRIB_ARRAY_NORMALIZED = 0x886A, |
| VERTEX_ATTRIB_ARRAY_POINTER = 0x8645, |
| VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 0x889F, |
| COMPILE_STATUS = 0x8B81, |
| INFO_LOG_LENGTH = 0x8B84, |
| SHADER_SOURCE_LENGTH = 0x8B88, |
| SHADER_COMPILER = 0x8DFA, |
| SHADER_BINARY_FORMATS = 0x8DF8, |
| NUM_SHADER_BINARY_FORMATS = 0x8DF9, |
| LOW_FLOAT = 0x8DF0, |
| MEDIUM_FLOAT = 0x8DF1, |
| HIGH_FLOAT = 0x8DF2, |
| LOW_INT = 0x8DF3, |
| MEDIUM_INT = 0x8DF4, |
| HIGH_INT = 0x8DF5, |
| FRAMEBUFFER = 0x8D40, |
| RENDERBUFFER = 0x8D41, |
| RGBA4 = 0x8056, |
| RGB5_A1 = 0x8057, |
| RGB565 = 0x8D62, |
| DEPTH_COMPONENT16 = 0x81A5, |
| STENCIL_INDEX = 0x1901, |
| STENCIL_INDEX8 = 0x8D48, |
| DEPTH_STENCIL = 0x84F9, |
| UNSIGNED_INT_24_8 = 0x84FA, |
| DEPTH24_STENCIL8 = 0x88F0, |
| RENDERBUFFER_WIDTH = 0x8D42, |
| RENDERBUFFER_HEIGHT = 0x8D43, |
| RENDERBUFFER_INTERNAL_FORMAT = 0x8D44, |
| RENDERBUFFER_RED_SIZE = 0x8D50, |
| RENDERBUFFER_GREEN_SIZE = 0x8D51, |
| RENDERBUFFER_BLUE_SIZE = 0x8D52, |
| RENDERBUFFER_ALPHA_SIZE = 0x8D53, |
| RENDERBUFFER_DEPTH_SIZE = 0x8D54, |
| RENDERBUFFER_STENCIL_SIZE = 0x8D55, |
| FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = 0x8CD0, |
| FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 0x8CD1, |
| FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = 0x8CD2, |
| FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 0x8CD3, |
| COLOR_ATTACHMENT0 = 0x8CE0, |
| DEPTH_ATTACHMENT = 0x8D00, |
| STENCIL_ATTACHMENT = 0x8D20, |
| DEPTH_STENCIL_ATTACHMENT = 0x821A, |
| NONE = 0, |
| FRAMEBUFFER_COMPLETE = 0x8CD5, |
| FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 0x8CD6, |
| FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7, |
| FRAMEBUFFER_INCOMPLETE_DIMENSIONS = 0x8CD9, |
| FRAMEBUFFER_UNSUPPORTED = 0x8CDD, |
| FRAMEBUFFER_BINDING = 0x8CA6, |
| RENDERBUFFER_BINDING = 0x8CA7, |
| MAX_RENDERBUFFER_SIZE = 0x84E8, |
| INVALID_FRAMEBUFFER_OPERATION = 0x0506, |
| |
| // WebGL-specific enums |
| UNPACK_FLIP_Y_WEBGL = 0x9240, |
| UNPACK_PREMULTIPLY_ALPHA_WEBGL = 0x9241, |
| CONTEXT_LOST_WEBGL = 0x9242, |
| UNPACK_COLORSPACE_CONVERSION_WEBGL = 0x9243, |
| BROWSER_DEFAULT_WEBGL = 0x9244 |
| }; |
| |
| // Context creation attributes. |
| struct Attributes { |
| Attributes() |
| : alpha(true) |
| , depth(true) |
| , stencil(false) |
| , antialias(true) |
| , premultipliedAlpha(true) |
| , preserveDrawingBuffer(false) |
| , noExtensions(false) |
| , shareResources(true) |
| , preferDiscreteGPU(false) |
| { |
| } |
| |
| bool alpha; |
| bool depth; |
| bool stencil; |
| bool antialias; |
| bool premultipliedAlpha; |
| bool preserveDrawingBuffer; |
| bool noExtensions; |
| bool shareResources; |
| bool preferDiscreteGPU; |
| KURL topDocumentURL; |
| }; |
| |
| class ContextLostCallback { |
| public: |
| virtual void onContextLost() = 0; |
| virtual ~ContextLostCallback() {} |
| }; |
| |
| class ErrorMessageCallback { |
| public: |
| virtual void onErrorMessage(const String& message, GC3Dint id) = 0; |
| virtual ~ErrorMessageCallback() { } |
| }; |
| |
| void setContextLostCallback(PassOwnPtr<ContextLostCallback>); |
| void setErrorMessageCallback(PassOwnPtr<ErrorMessageCallback>); |
| |
| static PassRefPtr<GraphicsContext3D> create(Attributes); |
| |
| // Callers must make the context current before using it AND check that the context was created successfully |
| // via ContextLost before using the context in any way. Once made current on a thread, the context cannot |
| // be used on any other thread. |
| static PassRefPtr<GraphicsContext3D> createGraphicsContextFromWebContext(PassOwnPtr<WebKit::WebGraphicsContext3D>, bool preserveDrawingBuffer = false); |
| static PassRefPtr<GraphicsContext3D> createGraphicsContextFromProvider(PassOwnPtr<WebKit::WebGraphicsContext3DProvider>, bool preserveDrawingBuffer = false); |
| |
| ~GraphicsContext3D(); |
| |
| GrContext* grContext(); |
| WebKit::WebGraphicsContext3D* webContext() const { return m_impl; } |
| |
| bool makeContextCurrent(); |
| |
| uint32_t lastFlushID(); |
| |
| // Helper to texImage2D with pixel==0 case: pixels are initialized to 0. |
| // Return true if no GL error is synthesized. |
| // By default, alignment is 4, the OpenGL default setting. |
| bool texImage2DResourceSafe(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type, GC3Dint alignment = 4); |
| |
| //---------------------------------------------------------------------- |
| // Helpers for texture uploading and pixel readback. |
| // |
| |
| // Computes the components per pixel and bytes per component |
| // for the given format and type combination. Returns false if |
| // either was an invalid enum. |
| static bool computeFormatAndTypeParameters(GC3Denum format, |
| GC3Denum type, |
| unsigned int* componentsPerPixel, |
| unsigned int* bytesPerComponent); |
| |
| // Computes the image size in bytes. If paddingInBytes is not null, padding |
| // is also calculated in return. Returns NO_ERROR if succeed, otherwise |
| // return the suggested GL error indicating the cause of the failure: |
| // INVALID_VALUE if width/height is negative or overflow happens. |
| // INVALID_ENUM if format/type is illegal. |
| static GC3Denum computeImageSizeInBytes(GC3Denum format, |
| GC3Denum type, |
| GC3Dsizei width, |
| GC3Dsizei height, |
| GC3Dint alignment, |
| unsigned int* imageSizeInBytes, |
| unsigned int* paddingInBytes); |
| |
| // Attempt to enumerate all possible native image formats to |
| // reduce the amount of temporary allocations during texture |
| // uploading. This enum must be public because it is accessed |
| // by non-member functions. |
| enum DataFormat { |
| DataFormatRGBA8 = 0, |
| DataFormatRGBA16F, |
| DataFormatRGBA32F, |
| DataFormatRGB8, |
| DataFormatRGB16F, |
| DataFormatRGB32F, |
| DataFormatBGR8, |
| DataFormatBGRA8, |
| DataFormatARGB8, |
| DataFormatABGR8, |
| DataFormatRGBA5551, |
| DataFormatRGBA4444, |
| DataFormatRGB565, |
| DataFormatR8, |
| DataFormatR16F, |
| DataFormatR32F, |
| DataFormatRA8, |
| DataFormatRA16F, |
| DataFormatRA32F, |
| DataFormatAR8, |
| DataFormatA8, |
| DataFormatA16F, |
| DataFormatA32F, |
| DataFormatNumFormats |
| }; |
| |
| // Check if the format is one of the formats from the ImageData or DOM elements. |
| // The formats from ImageData is always RGBA8. |
| // The formats from DOM elements vary with Graphics ports. It can only be RGBA8 or BGRA8. |
| static ALWAYS_INLINE bool srcFormatComeFromDOMElementOrImageData(DataFormat SrcFormat) |
| { |
| return SrcFormat == DataFormatBGRA8 || SrcFormat == DataFormatRGBA8; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Entry points for WebGL. |
| // |
| |
| void activeTexture(GC3Denum texture); |
| void attachShader(Platform3DObject program, Platform3DObject shader); |
| void bindAttribLocation(Platform3DObject, GC3Duint index, const String& name); |
| void bindBuffer(GC3Denum target, Platform3DObject); |
| void bindFramebuffer(GC3Denum target, Platform3DObject); |
| void bindRenderbuffer(GC3Denum target, Platform3DObject); |
| void bindTexture(GC3Denum target, Platform3DObject); |
| void blendColor(GC3Dclampf red, GC3Dclampf green, GC3Dclampf blue, GC3Dclampf alpha); |
| void blendEquation(GC3Denum mode); |
| void blendEquationSeparate(GC3Denum modeRGB, GC3Denum modeAlpha); |
| void blendFunc(GC3Denum sfactor, GC3Denum dfactor); |
| void blendFuncSeparate(GC3Denum srcRGB, GC3Denum dstRGB, GC3Denum srcAlpha, GC3Denum dstAlpha); |
| |
| void bufferData(GC3Denum target, GC3Dsizeiptr size, GC3Denum usage); |
| void bufferData(GC3Denum target, GC3Dsizeiptr size, const void* data, GC3Denum usage); |
| void bufferSubData(GC3Denum target, GC3Dintptr offset, GC3Dsizeiptr size, const void* data); |
| |
| GC3Denum checkFramebufferStatus(GC3Denum target); |
| void clear(GC3Dbitfield mask); |
| void clearColor(GC3Dclampf red, GC3Dclampf green, GC3Dclampf blue, GC3Dclampf alpha); |
| void clearDepth(GC3Dclampf depth); |
| void clearStencil(GC3Dint s); |
| void colorMask(GC3Dboolean red, GC3Dboolean green, GC3Dboolean blue, GC3Dboolean alpha); |
| void compileShader(Platform3DObject); |
| |
| void compressedTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Dsizei imageSize, const void* data); |
| void compressedTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Dsizei imageSize, const void* data); |
| void copyTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Dint border); |
| void copyTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| void cullFace(GC3Denum mode); |
| void depthFunc(GC3Denum func); |
| void depthMask(GC3Dboolean flag); |
| void depthRange(GC3Dclampf zNear, GC3Dclampf zFar); |
| void detachShader(Platform3DObject, Platform3DObject); |
| void disable(GC3Denum cap); |
| void disableVertexAttribArray(GC3Duint index); |
| void drawArrays(GC3Denum mode, GC3Dint first, GC3Dsizei count); |
| void drawElements(GC3Denum mode, GC3Dsizei count, GC3Denum type, GC3Dintptr offset); |
| |
| void enable(GC3Denum cap); |
| void enableVertexAttribArray(GC3Duint index); |
| void finish(); |
| void flush(); |
| void framebufferRenderbuffer(GC3Denum target, GC3Denum attachment, GC3Denum renderbuffertarget, Platform3DObject); |
| void framebufferTexture2D(GC3Denum target, GC3Denum attachment, GC3Denum textarget, Platform3DObject, GC3Dint level); |
| void frontFace(GC3Denum mode); |
| void generateMipmap(GC3Denum target); |
| |
| bool getActiveAttrib(Platform3DObject program, GC3Duint index, ActiveInfo&); |
| bool getActiveUniform(Platform3DObject program, GC3Duint index, ActiveInfo&); |
| void getAttachedShaders(Platform3DObject program, GC3Dsizei maxCount, GC3Dsizei* count, Platform3DObject* shaders); |
| GC3Dint getAttribLocation(Platform3DObject, const String& name); |
| void getBooleanv(GC3Denum pname, GC3Dboolean* value); |
| void getBufferParameteriv(GC3Denum target, GC3Denum pname, GC3Dint* value); |
| Attributes getContextAttributes(); |
| GC3Denum getError(); |
| void getFloatv(GC3Denum pname, GC3Dfloat* value); |
| void getFramebufferAttachmentParameteriv(GC3Denum target, GC3Denum attachment, GC3Denum pname, GC3Dint* value); |
| void getIntegerv(GC3Denum pname, GC3Dint* value); |
| void getProgramiv(Platform3DObject program, GC3Denum pname, GC3Dint* value); |
| String getProgramInfoLog(Platform3DObject); |
| void getRenderbufferParameteriv(GC3Denum target, GC3Denum pname, GC3Dint* value); |
| void getShaderiv(Platform3DObject, GC3Denum pname, GC3Dint* value); |
| String getShaderInfoLog(Platform3DObject); |
| void getShaderPrecisionFormat(GC3Denum shaderType, GC3Denum precisionType, GC3Dint* range, GC3Dint* precision); |
| String getShaderSource(Platform3DObject); |
| String getString(GC3Denum name); |
| void getTexParameterfv(GC3Denum target, GC3Denum pname, GC3Dfloat* value); |
| void getTexParameteriv(GC3Denum target, GC3Denum pname, GC3Dint* value); |
| void getUniformfv(Platform3DObject program, GC3Dint location, GC3Dfloat* value); |
| void getUniformiv(Platform3DObject program, GC3Dint location, GC3Dint* value); |
| GC3Dint getUniformLocation(Platform3DObject, const String& name); |
| void getVertexAttribfv(GC3Duint index, GC3Denum pname, GC3Dfloat* value); |
| void getVertexAttribiv(GC3Duint index, GC3Denum pname, GC3Dint* value); |
| GC3Dsizeiptr getVertexAttribOffset(GC3Duint index, GC3Denum pname); |
| |
| void hint(GC3Denum target, GC3Denum mode); |
| GC3Dboolean isBuffer(Platform3DObject); |
| GC3Dboolean isEnabled(GC3Denum cap); |
| GC3Dboolean isFramebuffer(Platform3DObject); |
| GC3Dboolean isProgram(Platform3DObject); |
| GC3Dboolean isRenderbuffer(Platform3DObject); |
| GC3Dboolean isShader(Platform3DObject); |
| GC3Dboolean isTexture(Platform3DObject); |
| void lineWidth(GC3Dfloat); |
| void linkProgram(Platform3DObject); |
| void pixelStorei(GC3Denum pname, GC3Dint param); |
| void polygonOffset(GC3Dfloat factor, GC3Dfloat units); |
| |
| void readPixels(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, void* data); |
| |
| void releaseShaderCompiler(); |
| |
| void renderbufferStorage(GC3Denum target, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height); |
| void sampleCoverage(GC3Dclampf value, GC3Dboolean invert); |
| void scissor(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| void shaderSource(Platform3DObject, const String& string); |
| void stencilFunc(GC3Denum func, GC3Dint ref, GC3Duint mask); |
| void stencilFuncSeparate(GC3Denum face, GC3Denum func, GC3Dint ref, GC3Duint mask); |
| void stencilMask(GC3Duint mask); |
| void stencilMaskSeparate(GC3Denum face, GC3Duint mask); |
| void stencilOp(GC3Denum fail, GC3Denum zfail, GC3Denum zpass); |
| void stencilOpSeparate(GC3Denum face, GC3Denum fail, GC3Denum zfail, GC3Denum zpass); |
| |
| void texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type, const void* pixels); |
| void texParameterf(GC3Denum target, GC3Denum pname, GC3Dfloat param); |
| void texParameteri(GC3Denum target, GC3Denum pname, GC3Dint param); |
| void texSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, const void* pixels); |
| |
| void uniform1f(GC3Dint location, GC3Dfloat x); |
| void uniform1fv(GC3Dint location, GC3Dsizei, GC3Dfloat* v); |
| void uniform1i(GC3Dint location, GC3Dint x); |
| void uniform1iv(GC3Dint location, GC3Dsizei, GC3Dint* v); |
| void uniform2f(GC3Dint location, GC3Dfloat x, GC3Dfloat y); |
| void uniform2fv(GC3Dint location, GC3Dsizei, GC3Dfloat* v); |
| void uniform2i(GC3Dint location, GC3Dint x, GC3Dint y); |
| void uniform2iv(GC3Dint location, GC3Dsizei, GC3Dint* v); |
| void uniform3f(GC3Dint location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z); |
| void uniform3fv(GC3Dint location, GC3Dsizei, GC3Dfloat* v); |
| void uniform3i(GC3Dint location, GC3Dint x, GC3Dint y, GC3Dint z); |
| void uniform3iv(GC3Dint location, GC3Dsizei, GC3Dint* v); |
| void uniform4f(GC3Dint location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w); |
| void uniform4fv(GC3Dint location, GC3Dsizei, GC3Dfloat* v); |
| void uniform4i(GC3Dint location, GC3Dint x, GC3Dint y, GC3Dint z, GC3Dint w); |
| void uniform4iv(GC3Dint location, GC3Dsizei, GC3Dint* v); |
| void uniformMatrix2fv(GC3Dint location, GC3Dsizei, GC3Dboolean transpose, GC3Dfloat* value); |
| void uniformMatrix3fv(GC3Dint location, GC3Dsizei, GC3Dboolean transpose, GC3Dfloat* value); |
| void uniformMatrix4fv(GC3Dint location, GC3Dsizei, GC3Dboolean transpose, GC3Dfloat* value); |
| |
| void useProgram(Platform3DObject); |
| void validateProgram(Platform3DObject); |
| |
| void vertexAttrib1f(GC3Duint index, GC3Dfloat x); |
| void vertexAttrib1fv(GC3Duint index, GC3Dfloat* values); |
| void vertexAttrib2f(GC3Duint index, GC3Dfloat x, GC3Dfloat y); |
| void vertexAttrib2fv(GC3Duint index, GC3Dfloat* values); |
| void vertexAttrib3f(GC3Duint index, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z); |
| void vertexAttrib3fv(GC3Duint index, GC3Dfloat* values); |
| void vertexAttrib4f(GC3Duint index, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w); |
| void vertexAttrib4fv(GC3Duint index, GC3Dfloat* values); |
| void vertexAttribPointer(GC3Duint index, GC3Dint size, GC3Denum type, GC3Dboolean normalized, |
| GC3Dsizei stride, GC3Dintptr offset); |
| |
| void viewport(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height); |
| |
| void reshape(int width, int height); |
| |
| void markContextChanged(); |
| void markLayerComposited(); |
| bool layerComposited() const; |
| |
| void paintRenderingResultsToCanvas(ImageBuffer*, DrawingBuffer*); |
| PassRefPtr<ImageData> paintRenderingResultsToImageData(DrawingBuffer*); |
| |
| // Support for buffer creation and deletion |
| Platform3DObject createBuffer(); |
| Platform3DObject createFramebuffer(); |
| Platform3DObject createProgram(); |
| Platform3DObject createRenderbuffer(); |
| Platform3DObject createShader(GC3Denum); |
| Platform3DObject createTexture(); |
| |
| void deleteBuffer(Platform3DObject); |
| void deleteFramebuffer(Platform3DObject); |
| void deleteProgram(Platform3DObject); |
| void deleteRenderbuffer(Platform3DObject); |
| void deleteShader(Platform3DObject); |
| void deleteTexture(Platform3DObject); |
| |
| // Synthesizes an OpenGL error which will be returned from a |
| // later call to getError. This is used to emulate OpenGL ES |
| // 2.0 behavior on the desktop and to enforce additional error |
| // checking mandated by WebGL. |
| // |
| // Per the behavior of glGetError, this stores at most one |
| // instance of any given error, and returns them from calls to |
| // getError in the order they were added. |
| void synthesizeGLError(GC3Denum error); |
| |
| // Support for extensions. Returns a non-null object, though not |
| // all methods it contains may necessarily be supported on the |
| // current hardware. Must call Extensions3D::supports() to |
| // determine this. |
| Extensions3D* getExtensions(); |
| |
| static unsigned getClearBitsByFormat(GC3Denum); |
| |
| enum ChannelBits { |
| ChannelRed = 1, |
| ChannelGreen = 2, |
| ChannelBlue = 4, |
| ChannelAlpha = 8, |
| ChannelDepth = 16, |
| ChannelStencil = 32, |
| ChannelRGB = ChannelRed | ChannelGreen | ChannelBlue, |
| ChannelRGBA = ChannelRGB | ChannelAlpha, |
| }; |
| |
| static unsigned getChannelBitsByFormat(GC3Denum); |
| |
| // Possible alpha operations that may need to occur during |
| // pixel packing. FIXME: kAlphaDoUnmultiply is lossy and must |
| // be removed. |
| enum AlphaOp { |
| AlphaDoNothing = 0, |
| AlphaDoPremultiply = 1, |
| AlphaDoUnmultiply = 2 |
| }; |
| |
| enum ImageHtmlDomSource { |
| HtmlDomImage = 0, |
| HtmlDomCanvas = 1, |
| HtmlDomVideo = 2, |
| HtmlDomNone = 3 |
| }; |
| |
| class ImageExtractor { |
| public: |
| ImageExtractor(Image*, ImageHtmlDomSource, bool premultiplyAlpha, bool ignoreGammaAndColorProfile); |
| |
| ~ImageExtractor(); |
| |
| bool extractSucceeded() { return m_extractSucceeded; } |
| const void* imagePixelData() { return m_imagePixelData; } |
| unsigned imageWidth() { return m_imageWidth; } |
| unsigned imageHeight() { return m_imageHeight; } |
| DataFormat imageSourceFormat() { return m_imageSourceFormat; } |
| AlphaOp imageAlphaOp() { return m_alphaOp; } |
| unsigned imageSourceUnpackAlignment() { return m_imageSourceUnpackAlignment; } |
| ImageHtmlDomSource imageHtmlDomSource() { return m_imageHtmlDomSource; } |
| private: |
| // Extract the image and keeps track of its status, such as width, height, Source Alignment, format and AlphaOp etc. |
| // This needs to lock the resources or relevant data if needed and return true upon success |
| bool extractImage(bool premultiplyAlpha, bool ignoreGammaAndColorProfile); |
| |
| RefPtr<NativeImageSkia> m_nativeImage; |
| RefPtr<NativeImageSkia> m_skiaImage; |
| Image* m_image; |
| ImageHtmlDomSource m_imageHtmlDomSource; |
| bool m_extractSucceeded; |
| const void* m_imagePixelData; |
| unsigned m_imageWidth; |
| unsigned m_imageHeight; |
| DataFormat m_imageSourceFormat; |
| AlphaOp m_alphaOp; |
| unsigned m_imageSourceUnpackAlignment; |
| }; |
| |
| // The Following functions are implemented in GraphicsContext3DImagePacking.cpp |
| |
| // Packs the contents of the given Image which is passed in |pixels| into the passed Vector |
| // according to the given format and type, and obeying the flipY and AlphaOp flags. |
| // Returns true upon success. |
| static bool packImageData(Image*, const void* pixels, GC3Denum format, GC3Denum type, bool flipY, AlphaOp, DataFormat sourceFormat, unsigned width, unsigned height, unsigned sourceUnpackAlignment, Vector<uint8_t>& data); |
| |
| // Extracts the contents of the given ImageData into the passed Vector, |
| // packing the pixel data according to the given format and type, |
| // and obeying the flipY and premultiplyAlpha flags. Returns true |
| // upon success. |
| static bool extractImageData(ImageData*, GC3Denum format, GC3Denum type, bool flipY, bool premultiplyAlpha, Vector<uint8_t>& data); |
| |
| // Helper function which extracts the user-supplied texture |
| // data, applying the flipY and premultiplyAlpha parameters. |
| // If the data is not tightly packed according to the passed |
| // unpackAlignment, the output data will be tightly packed. |
| // Returns true if successful, false if any error occurred. |
| static bool extractTextureData(unsigned width, unsigned height, GC3Denum format, GC3Denum type, unsigned unpackAlignment, bool flipY, bool premultiplyAlpha, const void* pixels, Vector<uint8_t>& data); |
| |
| // End GraphicsContext3DImagePacking.cpp functions |
| |
| // This is the order of bytes to use when doing a readback. |
| enum ReadbackOrder { |
| ReadbackRGBA, |
| ReadbackSkia |
| }; |
| |
| // Helper function which does a readback from the currently-bound |
| // framebuffer into a buffer of a certain size with 4-byte pixels. |
| void readBackFramebuffer(unsigned char* pixels, int width, int height, ReadbackOrder, AlphaOp); |
| |
| private: |
| friend class Extensions3D; |
| |
| GraphicsContext3D(PassOwnPtr<WebKit::WebGraphicsContext3D>, bool preserveDrawingBuffer); |
| GraphicsContext3D(PassOwnPtr<WebKit::WebGraphicsContext3DProvider>, bool preserveDrawingBuffer); |
| |
| // Helper for packImageData/extractImageData/extractTextureData which implement packing of pixel |
| // data into the specified OpenGL destination format and type. |
| // A sourceUnpackAlignment of zero indicates that the source |
| // data is tightly packed. Non-zero values may take a slow path. |
| // Destination data will have no gaps between rows. |
| // Implemented in GraphicsContext3DImagePacking.cpp |
| static bool packPixels(const uint8_t* sourceData, DataFormat sourceDataFormat, unsigned width, unsigned height, unsigned sourceUnpackAlignment, unsigned destinationFormat, unsigned destinationType, AlphaOp, void* destinationData, bool flipY); |
| |
| void paintFramebufferToCanvas(int framebuffer, int width, int height, bool premultiplyAlpha, ImageBuffer*); |
| // Helper function to flip a bitmap vertically. |
| void flipVertically(uint8_t* data, int width, int height); |
| |
| // Extensions3D support. |
| bool supportsExtension(const String& name); |
| bool ensureExtensionEnabled(const String& name); |
| bool isExtensionEnabled(const String& name); |
| |
| void initializeExtensions(); |
| |
| bool preserveDrawingBuffer() const { return m_preserveDrawingBuffer; } |
| |
| OwnPtr<WebKit::WebGraphicsContext3DProvider> m_provider; |
| WebKit::WebGraphicsContext3D* m_impl; |
| OwnPtr<GraphicsContext3DContextLostCallbackAdapter> m_contextLostCallbackAdapter; |
| OwnPtr<GraphicsContext3DErrorMessageCallbackAdapter> m_errorMessageCallbackAdapter; |
| OwnPtr<WebKit::WebGraphicsContext3D> m_ownedWebContext; |
| OwnPtr<Extensions3D> m_extensions; |
| OwnPtr<GrMemoryAllocationChangedCallbackAdapter> m_grContextMemoryAllocationCallbackAdapter; |
| bool m_initializedAvailableExtensions; |
| HashSet<String> m_enabledExtensions; |
| HashSet<String> m_requestableExtensions; |
| bool m_layerComposited; |
| bool m_preserveDrawingBuffer; |
| int m_packAlignment; |
| |
| enum ResourceSafety { |
| ResourceSafetyUnknown, |
| ResourceSafe, |
| ResourceUnsafe |
| }; |
| ResourceSafety m_resourceSafety; |
| |
| // If the width and height of the Canvas's backing store don't |
| // match those that we were given in the most recent call to |
| // reshape(), then we need an intermediate bitmap to read back the |
| // frame buffer into. This seems to happen when CSS styles are |
| // used to resize the Canvas. |
| SkBitmap m_resizingBitmap; |
| |
| GrContext* m_grContext; |
| SkAutoTUnref<GrContext> m_ownedGrContext; |
| |
| // Used to flip a bitmap vertically. |
| Vector<uint8_t> m_scanline; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // GraphicsContext3D_h |
