зеркало из https://github.com/mozilla/gecko-dev.git
413 строки
12 KiB
C++
413 строки
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLContext.h"
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#include "WebGLContextUtils.h"
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#include "WebGLBuffer.h"
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#include "WebGLVertexAttribData.h"
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#include "WebGLShader.h"
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#include "WebGLProgram.h"
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#include "WebGLUniformLocation.h"
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#include "WebGLFramebuffer.h"
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#include "WebGLRenderbuffer.h"
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#include "WebGLShaderPrecisionFormat.h"
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#include "WebGLTexture.h"
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#include "WebGLExtensions.h"
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#include "WebGLVertexArray.h"
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#include "nsString.h"
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#include "nsDebug.h"
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#include "nsReadableUtils.h"
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#include "gfxContext.h"
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#include "gfxPlatform.h"
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#include "GLContext.h"
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#include "nsContentUtils.h"
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#include "nsError.h"
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#include "nsLayoutUtils.h"
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#include "CanvasUtils.h"
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#include "gfxUtils.h"
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#include "jsfriendapi.h"
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#include "WebGLTexelConversions.h"
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#include "WebGLValidateStrings.h"
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#include <algorithm>
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// needed to check if current OS is lower than 10.7
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#if defined(MOZ_WIDGET_COCOA)
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#include "nsCocoaFeatures.h"
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#endif
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#include "mozilla/DebugOnly.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/ImageData.h"
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#include "mozilla/dom/ToJSValue.h"
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#include "mozilla/EndianUtils.h"
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namespace mozilla {
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static bool
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IsValidTexTarget(WebGLContext* webgl, uint8_t funcDims, GLenum rawTexTarget,
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TexTarget* const out)
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{
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uint8_t targetDims;
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switch (rawTexTarget) {
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case LOCAL_GL_TEXTURE_2D:
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case LOCAL_GL_TEXTURE_CUBE_MAP:
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targetDims = 2;
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break;
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case LOCAL_GL_TEXTURE_3D:
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case LOCAL_GL_TEXTURE_2D_ARRAY:
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if (!webgl->IsWebGL2())
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return false;
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targetDims = 3;
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break;
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default:
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return false;
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}
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// Some funcs (like GenerateMipmap) doesn't know the dimension, so don't check it.
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if (funcDims && targetDims != funcDims)
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return false;
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*out = rawTexTarget;
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return true;
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}
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static bool
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IsValidTexImageTarget(WebGLContext* webgl, uint8_t funcDims, GLenum rawTexImageTarget,
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TexImageTarget* const out)
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{
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uint8_t targetDims;
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switch (rawTexImageTarget) {
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case LOCAL_GL_TEXTURE_2D:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
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targetDims = 2;
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break;
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case LOCAL_GL_TEXTURE_3D:
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case LOCAL_GL_TEXTURE_2D_ARRAY:
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if (!webgl->IsWebGL2())
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return false;
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targetDims = 3;
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break;
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default:
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return false;
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}
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if (targetDims != funcDims)
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return false;
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*out = rawTexImageTarget;
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return true;
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}
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bool
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ValidateTexTarget(WebGLContext* webgl, const char* funcName, uint8_t funcDims,
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GLenum rawTexTarget, TexTarget* const out_texTarget,
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WebGLTexture** const out_tex)
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{
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if (webgl->IsContextLost())
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return false;
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TexTarget texTarget;
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if (!IsValidTexTarget(webgl, funcDims, rawTexTarget, &texTarget)) {
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webgl->ErrorInvalidEnum("%s: Invalid texTarget.", funcName);
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return false;
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}
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WebGLTexture* tex = webgl->ActiveBoundTextureForTarget(texTarget);
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if (!tex) {
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webgl->ErrorInvalidOperation("%s: No texture is bound to this target.", funcName);
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return false;
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}
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*out_texTarget = texTarget;
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*out_tex = tex;
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return true;
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}
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bool
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ValidateTexImageTarget(WebGLContext* webgl, const char* funcName, uint8_t funcDims,
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GLenum rawTexImageTarget, TexImageTarget* const out_texImageTarget,
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WebGLTexture** const out_tex)
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{
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if (webgl->IsContextLost())
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return false;
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TexImageTarget texImageTarget;
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if (!IsValidTexImageTarget(webgl, funcDims, rawTexImageTarget, &texImageTarget)) {
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webgl->ErrorInvalidEnum("%s: Invalid texImageTarget.", funcName);
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return false;
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}
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WebGLTexture* tex = webgl->ActiveBoundTextureForTexImageTarget(texImageTarget);
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if (!tex) {
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webgl->ErrorInvalidOperation("%s: No texture is bound to this target.", funcName);
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return false;
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}
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*out_texImageTarget = texImageTarget;
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*out_tex = tex;
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return true;
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}
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/*virtual*/ bool
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WebGLContext::IsTexParamValid(GLenum pname) const
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{
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switch (pname) {
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case LOCAL_GL_TEXTURE_MIN_FILTER:
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case LOCAL_GL_TEXTURE_MAG_FILTER:
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case LOCAL_GL_TEXTURE_WRAP_S:
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case LOCAL_GL_TEXTURE_WRAP_T:
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return true;
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case LOCAL_GL_TEXTURE_MAX_ANISOTROPY_EXT:
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return IsExtensionEnabled(WebGLExtensionID::EXT_texture_filter_anisotropic);
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default:
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return false;
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}
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}
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void
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WebGLContext::InvalidateResolveCacheForTextureWithTexUnit(const GLuint texUnit)
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{
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if (mBound2DTextures[texUnit])
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mBound2DTextures[texUnit]->InvalidateResolveCache();
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if (mBoundCubeMapTextures[texUnit])
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mBoundCubeMapTextures[texUnit]->InvalidateResolveCache();
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if (mBound3DTextures[texUnit])
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mBound3DTextures[texUnit]->InvalidateResolveCache();
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if (mBound2DArrayTextures[texUnit])
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mBound2DArrayTextures[texUnit]->InvalidateResolveCache();
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}
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//////////////////////////////////////////////////////////////////////////////////////////
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// GL calls
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void
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WebGLContext::BindTexture(GLenum rawTarget, WebGLTexture* newTex)
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{
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if (IsContextLost())
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return;
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if (newTex && !ValidateObject("bindTexture", *newTex))
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return;
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// Need to check rawTarget first before comparing against newTex->Target() as
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// newTex->Target() returns a TexTarget, which will assert on invalid value.
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WebGLRefPtr<WebGLTexture>* currentTexPtr = nullptr;
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switch (rawTarget) {
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case LOCAL_GL_TEXTURE_2D:
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currentTexPtr = &mBound2DTextures[mActiveTexture];
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break;
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case LOCAL_GL_TEXTURE_CUBE_MAP:
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currentTexPtr = &mBoundCubeMapTextures[mActiveTexture];
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break;
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case LOCAL_GL_TEXTURE_3D:
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if (IsWebGL2())
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currentTexPtr = &mBound3DTextures[mActiveTexture];
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break;
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case LOCAL_GL_TEXTURE_2D_ARRAY:
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if (IsWebGL2())
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currentTexPtr = &mBound2DArrayTextures[mActiveTexture];
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break;
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}
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if (!currentTexPtr) {
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ErrorInvalidEnumInfo("bindTexture: target", rawTarget);
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return;
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}
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const TexTarget texTarget(rawTarget);
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if (newTex) {
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if (!newTex->BindTexture(texTarget))
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return;
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} else {
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gl->fBindTexture(texTarget.get(), 0);
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}
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*currentTexPtr = newTex;
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}
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void
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WebGLContext::GenerateMipmap(GLenum rawTexTarget)
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{
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const char funcName[] = "generateMipmap";
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const uint8_t funcDims = 0;
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TexTarget texTarget;
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WebGLTexture* tex;
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if (!ValidateTexTarget(this, funcName, funcDims, rawTexTarget, &texTarget, &tex))
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return;
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tex->GenerateMipmap(texTarget);
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}
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JS::Value
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WebGLContext::GetTexParameter(GLenum rawTexTarget, GLenum pname)
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{
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const char funcName[] = "getTexParameter";
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const uint8_t funcDims = 0;
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TexTarget texTarget;
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WebGLTexture* tex;
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if (!ValidateTexTarget(this, funcName, funcDims, rawTexTarget, &texTarget, &tex))
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return JS::NullValue();
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if (!IsTexParamValid(pname)) {
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ErrorInvalidEnumInfo("getTexParameter: pname", pname);
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return JS::NullValue();
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}
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return tex->GetTexParameter(texTarget, pname);
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}
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bool
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WebGLContext::IsTexture(WebGLTexture* tex)
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{
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if (!ValidateIsObject("isTexture", tex))
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return false;
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return tex->IsTexture();
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}
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void
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WebGLContext::TexParameter_base(GLenum rawTexTarget, GLenum pname,
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const FloatOrInt& param)
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{
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const char funcName[] = "texParameter";
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const uint8_t funcDims = 0;
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TexTarget texTarget;
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WebGLTexture* tex;
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if (!ValidateTexTarget(this, funcName, funcDims, rawTexTarget, &texTarget, &tex))
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return;
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tex->TexParameter(texTarget, pname, param);
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}
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//////////////////////////////////////////////////////////////////////////////////////////
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// Uploads
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void
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WebGLContext::CompressedTexImage(const char* funcName, uint8_t funcDims, GLenum rawTarget,
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GLint level, GLenum internalFormat, GLsizei width,
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GLsizei height, GLsizei depth, GLint border,
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const TexImageSource& src, const Maybe<GLsizei>& expectedImageSize)
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{
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TexImageTarget target;
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WebGLTexture* tex;
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if (!ValidateTexImageTarget(this, funcName, funcDims, rawTarget, &target, &tex))
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return;
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tex->CompressedTexImage(funcName, target, level, internalFormat, width, height, depth,
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border, src, expectedImageSize);
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}
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void
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WebGLContext::CompressedTexSubImage(const char* funcName, uint8_t funcDims,
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GLenum rawTarget, GLint level, GLint xOffset,
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GLint yOffset, GLint zOffset, GLsizei width,
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GLsizei height, GLsizei depth, GLenum unpackFormat,
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const TexImageSource& src, const Maybe<GLsizei>& expectedImageSize)
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{
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TexImageTarget target;
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WebGLTexture* tex;
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if (!ValidateTexImageTarget(this, funcName, funcDims, rawTarget, &target, &tex))
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return;
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tex->CompressedTexSubImage(funcName, target, level, xOffset, yOffset, zOffset, width,
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height, depth, unpackFormat, src, expectedImageSize);
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}
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////
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void
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WebGLContext::CopyTexImage2D(GLenum rawTarget, GLint level, GLenum internalFormat,
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GLint x, GLint y, GLsizei width, GLsizei height,
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GLint border)
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{
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const char funcName[] = "copyTexImage2D";
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const uint8_t funcDims = 2;
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TexImageTarget target;
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WebGLTexture* tex;
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if (!ValidateTexImageTarget(this, funcName, funcDims, rawTarget, &target, &tex))
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return;
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tex->CopyTexImage2D(target, level, internalFormat, x, y, width, height, border);
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}
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void
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WebGLContext::CopyTexSubImage(const char* funcName, uint8_t funcDims, GLenum rawTarget,
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GLint level, GLint xOffset, GLint yOffset, GLint zOffset,
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GLint x, GLint y, GLsizei width, GLsizei height)
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{
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TexImageTarget target;
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WebGLTexture* tex;
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if (!ValidateTexImageTarget(this, funcName, funcDims, rawTarget, &target, &tex))
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return;
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tex->CopyTexSubImage(funcName, target, level, xOffset, yOffset, zOffset, x, y, width,
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height);
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}
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////
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void
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WebGLContext::TexImage(const char* funcName, uint8_t funcDims, GLenum rawTarget,
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GLint level, GLenum internalFormat, GLsizei width, GLsizei height,
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GLsizei depth, GLint border, GLenum unpackFormat,
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GLenum unpackType, const TexImageSource& src)
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{
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TexImageTarget target;
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WebGLTexture* tex;
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if (!ValidateTexImageTarget(this, funcName, funcDims, rawTarget, &target, &tex))
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return;
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const webgl::PackingInfo pi = {unpackFormat, unpackType};
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tex->TexImage(funcName, target, level, internalFormat, width, height, depth, border,
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pi, src);
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}
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void
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WebGLContext::TexSubImage(const char* funcName, uint8_t funcDims, GLenum rawTarget,
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GLint level, GLint xOffset, GLint yOffset, GLint zOffset,
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GLsizei width, GLsizei height, GLsizei depth,
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GLenum unpackFormat, GLenum unpackType,
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const TexImageSource& src)
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{
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TexImageTarget target;
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WebGLTexture* tex;
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if (!ValidateTexImageTarget(this, funcName, funcDims, rawTarget, &target, &tex))
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return;
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const webgl::PackingInfo pi = {unpackFormat, unpackType};
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tex->TexSubImage(funcName, target, level, xOffset, yOffset, zOffset, width, height,
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depth, pi, src);
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}
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} // namespace mozilla
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