/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "WebGLContext.h" #include "GLContext.h" #include "jsapi.h" #include "mozilla/dom/ScriptSettings.h" #include "mozilla/Preferences.h" #include "nsIDOMDataContainerEvent.h" #include "nsIDOMEvent.h" #include "nsIScriptSecurityManager.h" #include "nsIVariant.h" #include "nsPrintfCString.h" #include "nsServiceManagerUtils.h" #include "prprf.h" #include #include "WebGLBuffer.h" #include "WebGLExtensions.h" #include "WebGLFramebuffer.h" #include "WebGLProgram.h" #include "WebGLTexture.h" #include "WebGLVertexArray.h" #include "WebGLContextUtils.h" namespace mozilla { using namespace gl; bool IsGLDepthFormat(TexInternalFormat internalformat) { TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat); return unsizedformat == LOCAL_GL_DEPTH_COMPONENT; } bool IsGLDepthStencilFormat(TexInternalFormat internalformat) { TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat); return unsizedformat == LOCAL_GL_DEPTH_STENCIL; } bool FormatHasAlpha(TexInternalFormat internalformat) { TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat); return unsizedformat == LOCAL_GL_RGBA || unsizedformat == LOCAL_GL_LUMINANCE_ALPHA || unsizedformat == LOCAL_GL_ALPHA || unsizedformat == LOCAL_GL_SRGB_ALPHA || unsizedformat == LOCAL_GL_RGBA_INTEGER; } TexTarget TexImageTargetToTexTarget(TexImageTarget texImageTarget) { switch (texImageTarget.get()) { case LOCAL_GL_TEXTURE_2D: case LOCAL_GL_TEXTURE_3D: return texImageTarget.get(); case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X: case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X: case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y: case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z: case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: return LOCAL_GL_TEXTURE_CUBE_MAP; default: MOZ_ASSERT(false, "Bad texture target"); // Should be caught by the constructor for TexTarget return LOCAL_GL_NONE; } } GLComponents::GLComponents(TexInternalFormat internalformat) { TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat); mComponents = 0; switch (unsizedformat.get()) { case LOCAL_GL_RGBA: case LOCAL_GL_RGBA4: case LOCAL_GL_RGBA8: case LOCAL_GL_RGB5_A1: // Luminance + Alpha can be converted // to and from RGBA case LOCAL_GL_LUMINANCE_ALPHA: mComponents |= Components::Alpha; // Drops through case LOCAL_GL_RGB: case LOCAL_GL_RGB565: // Luminance can be converted to and from RGB case LOCAL_GL_LUMINANCE: mComponents |= Components::Red | Components::Green | Components::Blue; break; case LOCAL_GL_ALPHA: mComponents |= Components::Alpha; break; case LOCAL_GL_DEPTH_COMPONENT: mComponents |= Components::Depth; break; case LOCAL_GL_DEPTH_STENCIL: mComponents |= Components::Stencil; break; default: MOZ_ASSERT(false, "Unhandled case - GLComponents"); break; } } bool GLComponents::IsSubsetOf(const GLComponents& other) const { return (mComponents | other.mComponents) == other.mComponents; } TexType TypeFromInternalFormat(TexInternalFormat internalformat) { #define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \ if (internalformat == table_effectiveinternalformat) { \ return table_type; \ } #include "WebGLInternalFormatsTable.h" // if we're here, then internalformat is not an effective internalformat i.e. is an unsized internalformat. return LOCAL_GL_NONE; // no size, no type } TexInternalFormat UnsizedInternalFormatFromInternalFormat(TexInternalFormat internalformat) { #define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \ if (internalformat == table_effectiveinternalformat) { \ return table_internalformat; \ } #include "WebGLInternalFormatsTable.h" // if we're here, then internalformat is not an effective internalformat i.e. is an unsized internalformat. // so we can just return it. return internalformat; } /* * Note that the following two functions are inverse of each other: * EffectiveInternalFormatFromInternalFormatAndType and * InternalFormatAndTypeFromEffectiveInternalFormat both implement OpenGL ES 3.0.3 Table 3.2 * but in opposite directions. */ TexInternalFormat EffectiveInternalFormatFromUnsizedInternalFormatAndType(TexInternalFormat internalformat, TexType type) { MOZ_ASSERT(TypeFromInternalFormat(internalformat) == LOCAL_GL_NONE); #define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \ if (internalformat == table_internalformat && type == table_type) { \ return table_effectiveinternalformat; \ } #include "WebGLInternalFormatsTable.h" // If we're here, that means that type was incompatible with the given internalformat. return LOCAL_GL_NONE; } void UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(TexInternalFormat effectiveinternalformat, TexInternalFormat* const out_internalformat, TexType* const out_type) { MOZ_ASSERT(TypeFromInternalFormat(effectiveinternalformat) != LOCAL_GL_NONE); MOZ_ASSERT(out_internalformat); MOZ_ASSERT(out_type); GLenum internalformat = LOCAL_GL_NONE; GLenum type = LOCAL_GL_NONE; switch (effectiveinternalformat.get()) { #define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \ case table_effectiveinternalformat: \ internalformat = table_internalformat; \ type = table_type; \ break; #include "WebGLInternalFormatsTable.h" default: MOZ_CRASH(); // impossible to get here } *out_internalformat = internalformat; *out_type = type; } TexInternalFormat EffectiveInternalFormatFromInternalFormatAndType(TexInternalFormat internalformat, TexType type) { TexType typeOfInternalFormat = TypeFromInternalFormat(internalformat); if (typeOfInternalFormat == LOCAL_GL_NONE) return EffectiveInternalFormatFromUnsizedInternalFormatAndType(internalformat, type); if (typeOfInternalFormat == type) return internalformat; return LOCAL_GL_NONE; } /** * Convert effective internalformat into GL function parameters * valid for underlying driver. */ void DriverFormatsFromEffectiveInternalFormat(gl::GLContext* gl, TexInternalFormat effectiveinternalformat, GLenum* const out_driverInternalFormat, GLenum* const out_driverFormat, GLenum* const out_driverType) { MOZ_ASSERT(out_driverInternalFormat); MOZ_ASSERT(out_driverFormat); MOZ_ASSERT(out_driverType); TexInternalFormat unsizedinternalformat = LOCAL_GL_NONE; TexType type = LOCAL_GL_NONE; UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(effectiveinternalformat, &unsizedinternalformat, &type); // driverType: almost always the generic type that we just got, except on ES // we must replace HALF_FLOAT by HALF_FLOAT_OES GLenum driverType = type.get(); if (gl->IsGLES() && type == LOCAL_GL_HALF_FLOAT) driverType = LOCAL_GL_HALF_FLOAT_OES; // driverFormat: always just the unsized internalformat that we just got GLenum driverFormat = unsizedinternalformat.get(); // driverInternalFormat: almost always the same as driverFormat, but on desktop GL, // in some cases we must pass a different value. On ES, they are equal by definition // as it is an error to pass internalformat!=format. GLenum driverInternalFormat = driverFormat; if (!gl->IsGLES()) { // Cases where desktop OpenGL requires a tweak to 'format' if (driverFormat == LOCAL_GL_SRGB) driverFormat = LOCAL_GL_RGB; else if (driverFormat == LOCAL_GL_SRGB_ALPHA) driverFormat = LOCAL_GL_RGBA; // WebGL2's new formats are not legal values for internalformat, // as using unsized internalformat is deprecated. if (driverFormat == LOCAL_GL_RED || driverFormat == LOCAL_GL_RG || driverFormat == LOCAL_GL_RED_INTEGER || driverFormat == LOCAL_GL_RG_INTEGER || driverFormat == LOCAL_GL_RGB_INTEGER || driverFormat == LOCAL_GL_RGBA_INTEGER) { driverInternalFormat = effectiveinternalformat.get(); } // Cases where desktop OpenGL requires a sized internalformat, // as opposed to the unsized internalformat that had the same // GLenum value as 'format', in order to get the precise // semantics that we want. For example, for floating-point formats, // we seem to need a sized internalformat to get non-clamped floating // point texture sampling. Can't find the spec reference for that, // but that's at least the case on my NVIDIA driver version 331. if (unsizedinternalformat == LOCAL_GL_DEPTH_COMPONENT || unsizedinternalformat == LOCAL_GL_DEPTH_STENCIL || type == LOCAL_GL_FLOAT || type == LOCAL_GL_HALF_FLOAT) { driverInternalFormat = effectiveinternalformat.get(); } } *out_driverInternalFormat = driverInternalFormat; *out_driverFormat = driverFormat; *out_driverType = driverType; } /** * Return the bits per texel for format & type combination. * Assumes that format & type are a valid combination as checked with * ValidateTexImageFormatAndType(). */ size_t GetBitsPerTexel(TexInternalFormat effectiveinternalformat) { switch (effectiveinternalformat.get()) { case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1: case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1: return 2; case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT: case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: case LOCAL_GL_ATC_RGB: case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1: case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1: case LOCAL_GL_ETC1_RGB8_OES: return 4; case LOCAL_GL_ALPHA8: case LOCAL_GL_LUMINANCE8: case LOCAL_GL_R8: case LOCAL_GL_R8I: case LOCAL_GL_R8UI: case LOCAL_GL_R8_SNORM: case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA: case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA: return 8; case LOCAL_GL_LUMINANCE8_ALPHA8: case LOCAL_GL_RGBA4: case LOCAL_GL_RGB5_A1: case LOCAL_GL_DEPTH_COMPONENT16: case LOCAL_GL_RG8: case LOCAL_GL_R16I: case LOCAL_GL_R16UI: case LOCAL_GL_RGB565: case LOCAL_GL_R16F: case LOCAL_GL_RG8I: case LOCAL_GL_RG8UI: case LOCAL_GL_RG8_SNORM: case LOCAL_GL_ALPHA16F_EXT: case LOCAL_GL_LUMINANCE16F_EXT: return 16; case LOCAL_GL_RGB8: case LOCAL_GL_DEPTH_COMPONENT24: case LOCAL_GL_SRGB8: case LOCAL_GL_RGB8UI: case LOCAL_GL_RGB8I: case LOCAL_GL_RGB8_SNORM: return 24; case LOCAL_GL_RGBA8: case LOCAL_GL_RGB10_A2: case LOCAL_GL_R32F: case LOCAL_GL_RG16F: case LOCAL_GL_R32I: case LOCAL_GL_R32UI: case LOCAL_GL_RG16I: case LOCAL_GL_RG16UI: case LOCAL_GL_DEPTH24_STENCIL8: case LOCAL_GL_R11F_G11F_B10F: case LOCAL_GL_RGB9_E5: case LOCAL_GL_SRGB8_ALPHA8: case LOCAL_GL_DEPTH_COMPONENT32F: case LOCAL_GL_RGBA8UI: case LOCAL_GL_RGBA8I: case LOCAL_GL_RGBA8_SNORM: case LOCAL_GL_RGB10_A2UI: case LOCAL_GL_LUMINANCE_ALPHA16F_EXT: case LOCAL_GL_ALPHA32F_EXT: case LOCAL_GL_LUMINANCE32F_EXT: return 32; case LOCAL_GL_DEPTH32F_STENCIL8: return 40; case LOCAL_GL_RGB16F: case LOCAL_GL_RGB16UI: case LOCAL_GL_RGB16I: return 48; case LOCAL_GL_RG32F: case LOCAL_GL_RG32I: case LOCAL_GL_RG32UI: case LOCAL_GL_RGBA16F: case LOCAL_GL_RGBA16UI: case LOCAL_GL_RGBA16I: case LOCAL_GL_LUMINANCE_ALPHA32F_EXT: return 64; case LOCAL_GL_RGB32F: case LOCAL_GL_RGB32UI: case LOCAL_GL_RGB32I: return 96; case LOCAL_GL_RGBA32F: case LOCAL_GL_RGBA32UI: case LOCAL_GL_RGBA32I: return 128; default: MOZ_ASSERT(false, "Unhandled format"); return 0; } } void WebGLContext::GenerateWarning(const char* fmt, ...) { va_list ap; va_start(ap, fmt); GenerateWarning(fmt, ap); va_end(ap); } void WebGLContext::GenerateWarning(const char* fmt, va_list ap) { if (!ShouldGenerateWarnings()) return; mAlreadyGeneratedWarnings++; char buf[1024]; PR_vsnprintf(buf, 1024, fmt, ap); // no need to print to stderr, as JS_ReportWarning takes care of this for us. AutoJSContext cx; JS_ReportWarning(cx, "WebGL: %s", buf); if (!ShouldGenerateWarnings()) { JS_ReportWarning(cx, "WebGL: No further warnings will be reported for this" " WebGL context. (already reported %d warnings)", mAlreadyGeneratedWarnings); } } bool WebGLContext::ShouldGenerateWarnings() const { if (mMaxWarnings == -1) return true; return mAlreadyGeneratedWarnings < mMaxWarnings; } CheckedUint32 WebGLContext::GetImageSize(GLsizei height, GLsizei width, GLsizei depth, uint32_t pixelSize, uint32_t packOrUnpackAlignment) { CheckedUint32 checked_plainRowSize = CheckedUint32(width) * pixelSize; // alignedRowSize = row size rounded up to next multiple of packAlignment CheckedUint32 checked_alignedRowSize = RoundedToNextMultipleOf(checked_plainRowSize, packOrUnpackAlignment); // if height is 0, we don't need any memory to store this; without this check, we'll get an overflow CheckedUint32 checked_2dImageSize = 0; if (height >= 1) { checked_2dImageSize = (height-1) * checked_alignedRowSize + checked_plainRowSize; } // FIXME - we should honor UNPACK_IMAGE_HEIGHT CheckedUint32 checked_imageSize = checked_2dImageSize * depth; return checked_imageSize; } void WebGLContext::SynthesizeGLError(GLenum err) { /* ES2 section 2.5 "GL Errors" states that implementations can have * multiple 'flags', as errors might be caught in different parts of * a distributed implementation. * We're signing up as a distributed implementation here, with * separate flags for WebGL and the underlying GLContext. */ if (!mWebGLError) mWebGLError = err; } void WebGLContext::SynthesizeGLError(GLenum err, const char* fmt, ...) { va_list va; va_start(va, fmt); GenerateWarning(fmt, va); va_end(va); return SynthesizeGLError(err); } void WebGLContext::ErrorInvalidEnum(const char* fmt, ...) { va_list va; va_start(va, fmt); GenerateWarning(fmt, va); va_end(va); return SynthesizeGLError(LOCAL_GL_INVALID_ENUM); } void WebGLContext::ErrorInvalidEnumInfo(const char* info, GLenum enumvalue) { nsCString name; EnumName(enumvalue, &name); return ErrorInvalidEnum("%s: invalid enum value %s", info, name.get()); } void WebGLContext::ErrorInvalidOperation(const char* fmt, ...) { va_list va; va_start(va, fmt); GenerateWarning(fmt, va); va_end(va); return SynthesizeGLError(LOCAL_GL_INVALID_OPERATION); } void WebGLContext::ErrorInvalidValue(const char* fmt, ...) { va_list va; va_start(va, fmt); GenerateWarning(fmt, va); va_end(va); return SynthesizeGLError(LOCAL_GL_INVALID_VALUE); } void WebGLContext::ErrorInvalidFramebufferOperation(const char* fmt, ...) { va_list va; va_start(va, fmt); GenerateWarning(fmt, va); va_end(va); return SynthesizeGLError(LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION); } void WebGLContext::ErrorOutOfMemory(const char* fmt, ...) { va_list va; va_start(va, fmt); GenerateWarning(fmt, va); va_end(va); return SynthesizeGLError(LOCAL_GL_OUT_OF_MEMORY); } const char* WebGLContext::ErrorName(GLenum error) { switch(error) { case LOCAL_GL_INVALID_ENUM: return "INVALID_ENUM"; case LOCAL_GL_INVALID_OPERATION: return "INVALID_OPERATION"; case LOCAL_GL_INVALID_VALUE: return "INVALID_VALUE"; case LOCAL_GL_OUT_OF_MEMORY: return "OUT_OF_MEMORY"; case LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION: return "INVALID_FRAMEBUFFER_OPERATION"; case LOCAL_GL_NO_ERROR: return "NO_ERROR"; default: MOZ_ASSERT(false); return "[unknown WebGL error]"; } } // This version is 'fallible' and will return NULL if glenum is not recognized. const char* WebGLContext::EnumName(GLenum glenum) { switch (glenum) { #define XX(x) case LOCAL_GL_##x: return #x XX(ALPHA); XX(ATC_RGB); XX(ATC_RGBA_EXPLICIT_ALPHA); XX(ATC_RGBA_INTERPOLATED_ALPHA); XX(COMPRESSED_RGBA_PVRTC_2BPPV1); XX(COMPRESSED_RGBA_PVRTC_4BPPV1); XX(COMPRESSED_RGBA_S3TC_DXT1_EXT); XX(COMPRESSED_RGBA_S3TC_DXT3_EXT); XX(COMPRESSED_RGBA_S3TC_DXT5_EXT); XX(COMPRESSED_RGB_PVRTC_2BPPV1); XX(COMPRESSED_RGB_PVRTC_4BPPV1); XX(COMPRESSED_RGB_S3TC_DXT1_EXT); XX(DEPTH_COMPONENT); XX(DEPTH_COMPONENT16); XX(DEPTH_COMPONENT32); XX(DEPTH_STENCIL); XX(DEPTH24_STENCIL8); XX(DRAW_FRAMEBUFFER); XX(ETC1_RGB8_OES); XX(FLOAT); XX(FRAMEBUFFER); XX(HALF_FLOAT); XX(LUMINANCE); XX(LUMINANCE_ALPHA); XX(READ_FRAMEBUFFER); XX(RGB); XX(RGB16F); XX(RGB32F); XX(RGBA); XX(RGBA16F); XX(RGBA32F); XX(SRGB); XX(SRGB_ALPHA); XX(TEXTURE_2D); XX(TEXTURE_3D); XX(TEXTURE_CUBE_MAP); XX(TEXTURE_CUBE_MAP_NEGATIVE_X); XX(TEXTURE_CUBE_MAP_NEGATIVE_Y); XX(TEXTURE_CUBE_MAP_NEGATIVE_Z); XX(TEXTURE_CUBE_MAP_POSITIVE_X); XX(TEXTURE_CUBE_MAP_POSITIVE_Y); XX(TEXTURE_CUBE_MAP_POSITIVE_Z); XX(UNSIGNED_BYTE); XX(UNSIGNED_INT); XX(UNSIGNED_INT_24_8); XX(UNSIGNED_SHORT); XX(UNSIGNED_SHORT_4_4_4_4); XX(UNSIGNED_SHORT_5_5_5_1); XX(UNSIGNED_SHORT_5_6_5); XX(READ_BUFFER); XX(UNPACK_ROW_LENGTH); XX(UNPACK_SKIP_ROWS); XX(UNPACK_SKIP_PIXELS); XX(PACK_ROW_LENGTH); XX(PACK_SKIP_ROWS); XX(PACK_SKIP_PIXELS); XX(COLOR); XX(DEPTH); XX(STENCIL); XX(RED); XX(RGB8); XX(RGBA8); XX(RGB10_A2); XX(TEXTURE_BINDING_3D); XX(UNPACK_SKIP_IMAGES); XX(UNPACK_IMAGE_HEIGHT); XX(TEXTURE_WRAP_R); XX(MAX_3D_TEXTURE_SIZE); XX(UNSIGNED_INT_2_10_10_10_REV); XX(MAX_ELEMENTS_VERTICES); XX(MAX_ELEMENTS_INDICES); XX(TEXTURE_MIN_LOD); XX(TEXTURE_MAX_LOD); XX(TEXTURE_BASE_LEVEL); XX(TEXTURE_MAX_LEVEL); XX(MIN); XX(MAX); XX(DEPTH_COMPONENT24); XX(MAX_TEXTURE_LOD_BIAS); XX(TEXTURE_COMPARE_MODE); XX(TEXTURE_COMPARE_FUNC); XX(CURRENT_QUERY); XX(QUERY_RESULT); XX(QUERY_RESULT_AVAILABLE); XX(STREAM_READ); XX(STREAM_COPY); XX(STATIC_READ); XX(STATIC_COPY); XX(DYNAMIC_READ); XX(DYNAMIC_COPY); XX(MAX_DRAW_BUFFERS); XX(DRAW_BUFFER0); XX(DRAW_BUFFER1); XX(DRAW_BUFFER2); XX(DRAW_BUFFER3); XX(DRAW_BUFFER4); XX(DRAW_BUFFER5); XX(DRAW_BUFFER6); XX(DRAW_BUFFER7); XX(DRAW_BUFFER8); XX(DRAW_BUFFER9); XX(DRAW_BUFFER10); XX(DRAW_BUFFER11); XX(DRAW_BUFFER12); XX(DRAW_BUFFER13); XX(DRAW_BUFFER14); XX(DRAW_BUFFER15); XX(MAX_FRAGMENT_UNIFORM_COMPONENTS); XX(MAX_VERTEX_UNIFORM_COMPONENTS); XX(SAMPLER_3D); XX(SAMPLER_2D_SHADOW); XX(FRAGMENT_SHADER_DERIVATIVE_HINT); XX(PIXEL_PACK_BUFFER); XX(PIXEL_UNPACK_BUFFER); XX(PIXEL_PACK_BUFFER_BINDING); XX(PIXEL_UNPACK_BUFFER_BINDING); XX(FLOAT_MAT2x3); XX(FLOAT_MAT2x4); XX(FLOAT_MAT3x2); XX(FLOAT_MAT3x4); XX(FLOAT_MAT4x2); XX(FLOAT_MAT4x3); XX(SRGB8); XX(SRGB8_ALPHA8); XX(COMPARE_REF_TO_TEXTURE); XX(VERTEX_ATTRIB_ARRAY_INTEGER); XX(MAX_ARRAY_TEXTURE_LAYERS); XX(MIN_PROGRAM_TEXEL_OFFSET); XX(MAX_PROGRAM_TEXEL_OFFSET); XX(MAX_VARYING_COMPONENTS); XX(TEXTURE_2D_ARRAY); XX(TEXTURE_BINDING_2D_ARRAY); XX(R11F_G11F_B10F); XX(UNSIGNED_INT_10F_11F_11F_REV); XX(RGB9_E5); XX(UNSIGNED_INT_5_9_9_9_REV); XX(TRANSFORM_FEEDBACK_BUFFER_MODE); XX(MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS); XX(TRANSFORM_FEEDBACK_VARYINGS); XX(TRANSFORM_FEEDBACK_BUFFER_START); XX(TRANSFORM_FEEDBACK_BUFFER_SIZE); XX(TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN); XX(RASTERIZER_DISCARD); XX(MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS); XX(MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS); XX(INTERLEAVED_ATTRIBS); XX(SEPARATE_ATTRIBS); XX(TRANSFORM_FEEDBACK_BUFFER); XX(TRANSFORM_FEEDBACK_BUFFER_BINDING); XX(RGBA32UI); XX(RGB32UI); XX(RGBA16UI); XX(RGB16UI); XX(RGBA8UI); XX(RGB8UI); XX(RGBA32I); XX(RGB32I); XX(RGBA16I); XX(RGB16I); XX(RGBA8I); XX(RGB8I); XX(RED_INTEGER); XX(RGB_INTEGER); XX(RGBA_INTEGER); XX(SAMPLER_2D_ARRAY); XX(SAMPLER_2D_ARRAY_SHADOW); XX(SAMPLER_CUBE_SHADOW); XX(UNSIGNED_INT_VEC2); XX(UNSIGNED_INT_VEC3); XX(UNSIGNED_INT_VEC4); XX(INT_SAMPLER_2D); XX(INT_SAMPLER_3D); XX(INT_SAMPLER_CUBE); XX(INT_SAMPLER_2D_ARRAY); XX(UNSIGNED_INT_SAMPLER_2D); XX(UNSIGNED_INT_SAMPLER_3D); XX(UNSIGNED_INT_SAMPLER_CUBE); XX(UNSIGNED_INT_SAMPLER_2D_ARRAY); XX(DEPTH_COMPONENT32F); XX(DEPTH32F_STENCIL8); XX(FLOAT_32_UNSIGNED_INT_24_8_REV); XX(FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING); XX(FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE); XX(FRAMEBUFFER_ATTACHMENT_RED_SIZE); XX(FRAMEBUFFER_ATTACHMENT_GREEN_SIZE); XX(FRAMEBUFFER_ATTACHMENT_BLUE_SIZE); XX(FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE); XX(FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE); XX(FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE); XX(FRAMEBUFFER_DEFAULT); XX(DEPTH_STENCIL_ATTACHMENT); XX(UNSIGNED_NORMALIZED); XX(DRAW_FRAMEBUFFER_BINDING); XX(READ_FRAMEBUFFER_BINDING); XX(RENDERBUFFER_SAMPLES); XX(FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER); XX(MAX_COLOR_ATTACHMENTS); XX(COLOR_ATTACHMENT1); XX(COLOR_ATTACHMENT2); XX(COLOR_ATTACHMENT3); XX(COLOR_ATTACHMENT4); XX(COLOR_ATTACHMENT5); XX(COLOR_ATTACHMENT6); XX(COLOR_ATTACHMENT7); XX(COLOR_ATTACHMENT8); XX(COLOR_ATTACHMENT9); XX(COLOR_ATTACHMENT10); XX(COLOR_ATTACHMENT11); XX(COLOR_ATTACHMENT12); XX(COLOR_ATTACHMENT13); XX(COLOR_ATTACHMENT14); XX(COLOR_ATTACHMENT15); XX(FRAMEBUFFER_INCOMPLETE_MULTISAMPLE); XX(MAX_SAMPLES); XX(RG); XX(RG_INTEGER); XX(R8); XX(RG8); XX(R16F); XX(R32F); XX(RG16F); XX(RG32F); XX(R8I); XX(R8UI); XX(R16I); XX(R16UI); XX(R32I); XX(R32UI); XX(RG8I); XX(RG8UI); XX(RG16I); XX(RG16UI); XX(RG32I); XX(RG32UI); XX(VERTEX_ARRAY_BINDING); XX(R8_SNORM); XX(RG8_SNORM); XX(RGB8_SNORM); XX(RGBA8_SNORM); XX(SIGNED_NORMALIZED); XX(PRIMITIVE_RESTART_FIXED_INDEX); XX(COPY_READ_BUFFER); XX(COPY_WRITE_BUFFER); XX(UNIFORM_BUFFER); XX(UNIFORM_BUFFER_BINDING); XX(UNIFORM_BUFFER_START); XX(UNIFORM_BUFFER_SIZE); XX(MAX_VERTEX_UNIFORM_BLOCKS); XX(MAX_FRAGMENT_UNIFORM_BLOCKS); XX(MAX_COMBINED_UNIFORM_BLOCKS); XX(MAX_UNIFORM_BUFFER_BINDINGS); XX(MAX_UNIFORM_BLOCK_SIZE); XX(MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS); XX(MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS); XX(UNIFORM_BUFFER_OFFSET_ALIGNMENT); XX(ACTIVE_UNIFORM_BLOCKS); XX(UNIFORM_TYPE); XX(UNIFORM_SIZE); XX(UNIFORM_BLOCK_INDEX); XX(UNIFORM_OFFSET); XX(UNIFORM_ARRAY_STRIDE); XX(UNIFORM_MATRIX_STRIDE); XX(UNIFORM_IS_ROW_MAJOR); XX(UNIFORM_BLOCK_BINDING); XX(UNIFORM_BLOCK_DATA_SIZE); XX(UNIFORM_BLOCK_ACTIVE_UNIFORMS); XX(UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES); XX(UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER); XX(UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER); XX(MAX_VERTEX_OUTPUT_COMPONENTS); XX(MAX_FRAGMENT_INPUT_COMPONENTS); XX(MAX_SERVER_WAIT_TIMEOUT); XX(OBJECT_TYPE); XX(SYNC_CONDITION); XX(SYNC_STATUS); XX(SYNC_FLAGS); XX(SYNC_FENCE); XX(SYNC_GPU_COMMANDS_COMPLETE); XX(UNSIGNALED); XX(SIGNALED); XX(ALREADY_SIGNALED); XX(TIMEOUT_EXPIRED); XX(CONDITION_SATISFIED); XX(WAIT_FAILED); XX(VERTEX_ATTRIB_ARRAY_DIVISOR); XX(ANY_SAMPLES_PASSED); XX(ANY_SAMPLES_PASSED_CONSERVATIVE); XX(SAMPLER_BINDING); XX(RGB10_A2UI); XX(TEXTURE_SWIZZLE_R); XX(TEXTURE_SWIZZLE_G); XX(TEXTURE_SWIZZLE_B); XX(TEXTURE_SWIZZLE_A); XX(GREEN); XX(BLUE); XX(INT_2_10_10_10_REV); XX(TRANSFORM_FEEDBACK); XX(TRANSFORM_FEEDBACK_PAUSED); XX(TRANSFORM_FEEDBACK_ACTIVE); XX(TRANSFORM_FEEDBACK_BINDING); XX(COMPRESSED_R11_EAC); XX(COMPRESSED_SIGNED_R11_EAC); XX(COMPRESSED_RG11_EAC); XX(COMPRESSED_SIGNED_RG11_EAC); XX(COMPRESSED_RGB8_ETC2); XX(COMPRESSED_SRGB8_ETC2); XX(COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2); XX(COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2); XX(COMPRESSED_RGBA8_ETC2_EAC); XX(COMPRESSED_SRGB8_ALPHA8_ETC2_EAC); XX(TEXTURE_IMMUTABLE_FORMAT); XX(MAX_ELEMENT_INDEX); XX(NUM_SAMPLE_COUNTS); XX(TEXTURE_IMMUTABLE_LEVELS); #undef XX } return nullptr; } void WebGLContext::EnumName(GLenum glenum, nsACString* out_name) { const char* name = EnumName(glenum); if (name) { *out_name = nsDependentCString(name); } else { nsPrintfCString enumAsHex("", glenum); *out_name = enumAsHex; } } bool WebGLContext::IsCompressedTextureFormat(GLenum format) { switch (format) { case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT: case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: case LOCAL_GL_ATC_RGB: case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA: case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA: case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1: case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1: case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1: case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1: case LOCAL_GL_ETC1_RGB8_OES: case LOCAL_GL_COMPRESSED_R11_EAC: case LOCAL_GL_COMPRESSED_SIGNED_R11_EAC: case LOCAL_GL_COMPRESSED_RG11_EAC: case LOCAL_GL_COMPRESSED_SIGNED_RG11_EAC: case LOCAL_GL_COMPRESSED_RGB8_ETC2: case LOCAL_GL_COMPRESSED_SRGB8_ETC2: case LOCAL_GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2: case LOCAL_GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2: case LOCAL_GL_COMPRESSED_RGBA8_ETC2_EAC: case LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC: return true; default: return false; } } bool WebGLContext::IsTextureFormatCompressed(TexInternalFormat format) { return IsCompressedTextureFormat(format.get()); } GLenum WebGLContext::GetAndFlushUnderlyingGLErrors() { // Get and clear GL error in ALL cases. GLenum error = gl->fGetError(); // Only store in mUnderlyingGLError if is hasn't already recorded an // error. if (!mUnderlyingGLError) mUnderlyingGLError = error; return error; } #ifdef DEBUG // For NaNs, etc. static bool IsCacheCorrect(float cached, float actual) { if (IsNaN(cached)) { // GL is allowed to do anything it wants for NaNs, so if we're shadowing // a NaN, then whatever `actual` is might be correct. return true; } return cached == actual; } void AssertUintParamCorrect(gl::GLContext* gl, GLenum pname, GLuint shadow) { GLuint val = 0; gl->GetUIntegerv(pname, &val); if (val != shadow) { printf_stderr("Failed 0x%04x shadow: Cached 0x%x/%u, should be 0x%x/%u.\n", pname, shadow, shadow, val, val); MOZ_ASSERT(false, "Bad cached value."); } } void AssertMaskedUintParamCorrect(gl::GLContext* gl, GLenum pname, GLuint mask, GLuint shadow) { GLuint val = 0; gl->GetUIntegerv(pname, &val); const GLuint valMasked = val & mask; const GLuint shadowMasked = shadow & mask; if (valMasked != shadowMasked) { printf_stderr("Failed 0x%04x shadow: Cached 0x%x/%u, should be 0x%x/%u.\n", pname, shadowMasked, shadowMasked, valMasked, valMasked); MOZ_ASSERT(false, "Bad cached value."); } } #else void AssertUintParamCorrect(gl::GLContext*, GLenum, GLuint) { } #endif void WebGLContext::AssertCachedBindings() { #ifdef DEBUG MakeContextCurrent(); GetAndFlushUnderlyingGLErrors(); if (IsExtensionEnabled(WebGLExtensionID::OES_vertex_array_object)) { GLuint bound = mBoundVertexArray ? mBoundVertexArray->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_VERTEX_ARRAY_BINDING, bound); } // Bound object state if (IsWebGL2()) { GLuint bound = mBoundDrawFramebuffer ? mBoundDrawFramebuffer->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_DRAW_FRAMEBUFFER_BINDING, bound); bound = mBoundReadFramebuffer ? mBoundReadFramebuffer->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_READ_FRAMEBUFFER_BINDING, bound); } else { MOZ_ASSERT(mBoundDrawFramebuffer == mBoundReadFramebuffer); GLuint bound = mBoundDrawFramebuffer ? mBoundDrawFramebuffer->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_FRAMEBUFFER_BINDING, bound); } GLuint bound = mCurrentProgram ? mCurrentProgram->mGLName : 0; AssertUintParamCorrect(gl, LOCAL_GL_CURRENT_PROGRAM, bound); // Textures GLenum activeTexture = mActiveTexture + LOCAL_GL_TEXTURE0; AssertUintParamCorrect(gl, LOCAL_GL_ACTIVE_TEXTURE, activeTexture); WebGLTexture* curTex = ActiveBoundTextureForTarget(LOCAL_GL_TEXTURE_2D); bound = curTex ? curTex->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_2D, bound); curTex = ActiveBoundTextureForTarget(LOCAL_GL_TEXTURE_CUBE_MAP); bound = curTex ? curTex->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_CUBE_MAP, bound); // Buffers bound = mBoundArrayBuffer ? mBoundArrayBuffer->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_ARRAY_BUFFER_BINDING, bound); MOZ_ASSERT(mBoundVertexArray); WebGLBuffer* curBuff = mBoundVertexArray->mElementArrayBuffer; bound = curBuff ? curBuff->GLName() : 0; AssertUintParamCorrect(gl, LOCAL_GL_ELEMENT_ARRAY_BUFFER_BINDING, bound); MOZ_ASSERT(!GetAndFlushUnderlyingGLErrors()); #endif } void WebGLContext::AssertCachedState() { #ifdef DEBUG MakeContextCurrent(); GetAndFlushUnderlyingGLErrors(); // extensions if (IsExtensionEnabled(WebGLExtensionID::WEBGL_draw_buffers)) { AssertUintParamCorrect(gl, LOCAL_GL_MAX_COLOR_ATTACHMENTS, mGLMaxColorAttachments); AssertUintParamCorrect(gl, LOCAL_GL_MAX_DRAW_BUFFERS, mGLMaxDrawBuffers); } // Draw state MOZ_ASSERT(gl->fIsEnabled(LOCAL_GL_SCISSOR_TEST) == mScissorTestEnabled); MOZ_ASSERT(gl->fIsEnabled(LOCAL_GL_DITHER) == mDitherEnabled); MOZ_ASSERT_IF(IsWebGL2(), gl->fIsEnabled(LOCAL_GL_RASTERIZER_DISCARD) == mRasterizerDiscardEnabled); realGLboolean colorWriteMask[4] = {0, 0, 0, 0}; gl->fGetBooleanv(LOCAL_GL_COLOR_WRITEMASK, colorWriteMask); MOZ_ASSERT(colorWriteMask[0] == mColorWriteMask[0] && colorWriteMask[1] == mColorWriteMask[1] && colorWriteMask[2] == mColorWriteMask[2] && colorWriteMask[3] == mColorWriteMask[3]); GLfloat colorClearValue[4] = {0.0f, 0.0f, 0.0f, 0.0f}; gl->fGetFloatv(LOCAL_GL_COLOR_CLEAR_VALUE, colorClearValue); MOZ_ASSERT(IsCacheCorrect(mColorClearValue[0], colorClearValue[0]) && IsCacheCorrect(mColorClearValue[1], colorClearValue[1]) && IsCacheCorrect(mColorClearValue[2], colorClearValue[2]) && IsCacheCorrect(mColorClearValue[3], colorClearValue[3])); realGLboolean depthWriteMask = 0; gl->fGetBooleanv(LOCAL_GL_DEPTH_WRITEMASK, &depthWriteMask); MOZ_ASSERT(depthWriteMask == mDepthWriteMask); GLfloat depthClearValue = 0.0f; gl->fGetFloatv(LOCAL_GL_DEPTH_CLEAR_VALUE, &depthClearValue); MOZ_ASSERT(IsCacheCorrect(mDepthClearValue, depthClearValue)); AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_CLEAR_VALUE, mStencilClearValue); GLint stencilBits = 0; gl->fGetIntegerv(LOCAL_GL_STENCIL_BITS, &stencilBits); const GLuint stencilRefMask = (1 << stencilBits) - 1; AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_REF, stencilRefMask, mStencilRefFront); AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_REF, stencilRefMask, mStencilRefBack); // GLES 3.0.4, $4.1.4, p177: // [...] the front and back stencil mask are both set to the value `2^s - 1`, where // `s` is greater than or equal to the number of bits in the deepest stencil buffer // supported by the GL implementation. const int maxStencilBits = 8; const GLuint maxStencilBitsMask = (1 << maxStencilBits) - 1; AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_VALUE_MASK, maxStencilBitsMask, mStencilValueMaskFront); AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_VALUE_MASK, maxStencilBitsMask, mStencilValueMaskBack); AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_WRITEMASK, mStencilWriteMaskFront); AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_WRITEMASK, mStencilWriteMaskBack); // Viewport GLint int4[4] = {0, 0, 0, 0}; gl->fGetIntegerv(LOCAL_GL_VIEWPORT, int4); MOZ_ASSERT(int4[0] == mViewportX && int4[1] == mViewportY && int4[2] == mViewportWidth && int4[3] == mViewportHeight); AssertUintParamCorrect(gl, LOCAL_GL_PACK_ALIGNMENT, mPixelStorePackAlignment); AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_ALIGNMENT, mPixelStoreUnpackAlignment); MOZ_ASSERT(!GetAndFlushUnderlyingGLErrors()); #endif } const char* InfoFrom(WebGLTexImageFunc func, WebGLTexDimensions dims) { switch (dims) { case WebGLTexDimensions::Tex2D: switch (func) { case WebGLTexImageFunc::TexImage: return "texImage2D"; case WebGLTexImageFunc::TexSubImage: return "texSubImage2D"; case WebGLTexImageFunc::CopyTexImage: return "copyTexImage2D"; case WebGLTexImageFunc::CopyTexSubImage: return "copyTexSubImage2D"; case WebGLTexImageFunc::CompTexImage: return "compressedTexImage2D"; case WebGLTexImageFunc::CompTexSubImage: return "compressedTexSubImage2D"; default: MOZ_CRASH(); } case WebGLTexDimensions::Tex3D: switch (func) { case WebGLTexImageFunc::TexImage: return "texImage3D"; case WebGLTexImageFunc::TexSubImage: return "texSubImage3D"; case WebGLTexImageFunc::CopyTexSubImage: return "copyTexSubImage3D"; case WebGLTexImageFunc::CompTexSubImage: return "compressedTexSubImage3D"; default: MOZ_CRASH(); } default: MOZ_CRASH(); } } } // namespace mozilla