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Unified Diff: sky/engine/core/html/canvas/WebGLTexture.cpp

Issue 1001913003: Remove <canvas> (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: sky/engine/core/html/canvas/WebGLTexture.cpp
diff --git a/sky/engine/core/html/canvas/WebGLTexture.cpp b/sky/engine/core/html/canvas/WebGLTexture.cpp
deleted file mode 100644
index f6cc53bd3cb9e3c527d2044cb40cea903db1f18c..0000000000000000000000000000000000000000
--- a/sky/engine/core/html/canvas/WebGLTexture.cpp
+++ /dev/null
@@ -1,390 +0,0 @@
-/*
- * 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.
- */
-
-#include "sky/engine/config.h"
-
-#include "sky/engine/core/html/canvas/WebGLTexture.h"
-
-#include "sky/engine/core/html/canvas/WebGLRenderingContextBase.h"
-
-namespace blink {
-
-PassRefPtr<WebGLTexture> WebGLTexture::create(WebGLRenderingContextBase* ctx)
-{
- return adoptRef(new WebGLTexture(ctx));
-}
-
-WebGLTexture::WebGLTexture(WebGLRenderingContextBase* ctx)
- : WebGLSharedObject(ctx)
- , m_target(0)
- , m_minFilter(GL_NEAREST_MIPMAP_LINEAR)
- , m_magFilter(GL_LINEAR)
- , m_wrapS(GL_REPEAT)
- , m_wrapT(GL_REPEAT)
- , m_isNPOT(false)
- , m_isCubeComplete(false)
- , m_isComplete(false)
- , m_needToUseBlackTexture(false)
- , m_isFloatType(false)
- , m_isHalfFloatType(false)
-{
- setObject(ctx->webContext()->createTexture());
-}
-
-WebGLTexture::~WebGLTexture()
-{
- // Always perform detach here to ensure that platform object
- // deletion happens with Oilpan enabled. It keeps the code regular
- // to do it with or without Oilpan enabled.
- //
- // See comment in WebGLBuffer's destructor for additional
- // information on why this is done for WebGLSharedObject-derived
- // objects.
- detachAndDeleteObject();
-}
-
-void WebGLTexture::setTarget(GLenum target, GLint maxLevel)
-{
- if (!object())
- return;
- // Target is finalized the first time bindTexture() is called.
- if (m_target)
- return;
- switch (target) {
- case GL_TEXTURE_2D:
- m_target = target;
- m_info.resize(1);
- m_info[0].resize(maxLevel);
- break;
- case GL_TEXTURE_CUBE_MAP:
- m_target = target;
- m_info.resize(6);
- for (int ii = 0; ii < 6; ++ii)
- m_info[ii].resize(maxLevel);
- break;
- }
-}
-
-void WebGLTexture::setParameteri(GLenum pname, GLint param)
-{
- if (!object() || !m_target)
- return;
- switch (pname) {
- case GL_TEXTURE_MIN_FILTER:
- switch (param) {
- case GL_NEAREST:
- case GL_LINEAR:
- case GL_NEAREST_MIPMAP_NEAREST:
- case GL_LINEAR_MIPMAP_NEAREST:
- case GL_NEAREST_MIPMAP_LINEAR:
- case GL_LINEAR_MIPMAP_LINEAR:
- m_minFilter = param;
- break;
- }
- break;
- case GL_TEXTURE_MAG_FILTER:
- switch (param) {
- case GL_NEAREST:
- case GL_LINEAR:
- m_magFilter = param;
- break;
- }
- break;
- case GL_TEXTURE_WRAP_S:
- switch (param) {
- case GL_CLAMP_TO_EDGE:
- case GL_MIRRORED_REPEAT:
- case GL_REPEAT:
- m_wrapS = param;
- break;
- }
- break;
- case GL_TEXTURE_WRAP_T:
- switch (param) {
- case GL_CLAMP_TO_EDGE:
- case GL_MIRRORED_REPEAT:
- case GL_REPEAT:
- m_wrapT = param;
- break;
- }
- break;
- default:
- return;
- }
- update();
-}
-
-void WebGLTexture::setParameterf(GLenum pname, GLfloat param)
-{
- if (!object() || !m_target)
- return;
- GLint iparam = static_cast<GLint>(param);
- setParameteri(pname, iparam);
-}
-
-void WebGLTexture::setLevelInfo(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLenum type)
-{
- if (!object() || !m_target)
- return;
- // We assume level, internalFormat, width, height, and type have all been
- // validated already.
- int index = mapTargetToIndex(target);
- if (index < 0)
- return;
- m_info[index][level].setInfo(internalFormat, width, height, type);
- update();
-}
-
-void WebGLTexture::generateMipmapLevelInfo()
-{
- if (!object() || !m_target)
- return;
- if (!canGenerateMipmaps())
- return;
- if (!m_isComplete) {
- for (size_t ii = 0; ii < m_info.size(); ++ii) {
- const LevelInfo& info0 = m_info[ii][0];
- GLsizei width = info0.width;
- GLsizei height = info0.height;
- GLint levelCount = computeLevelCount(width, height);
- for (GLint level = 1; level < levelCount; ++level) {
- width = std::max(1, width >> 1);
- height = std::max(1, height >> 1);
- LevelInfo& info = m_info[ii][level];
- info.setInfo(info0.internalFormat, width, height, info0.type);
- }
- }
- m_isComplete = true;
- }
- m_needToUseBlackTexture = false;
-}
-
-GLenum WebGLTexture::getInternalFormat(GLenum target, GLint level) const
-{
- const LevelInfo* info = getLevelInfo(target, level);
- if (!info)
- return 0;
- return info->internalFormat;
-}
-
-GLenum WebGLTexture::getType(GLenum target, GLint level) const
-{
- const LevelInfo* info = getLevelInfo(target, level);
- if (!info)
- return 0;
- return info->type;
-}
-
-GLsizei WebGLTexture::getWidth(GLenum target, GLint level) const
-{
- const LevelInfo* info = getLevelInfo(target, level);
- if (!info)
- return 0;
- return info->width;
-}
-
-GLsizei WebGLTexture::getHeight(GLenum target, GLint level) const
-{
- const LevelInfo* info = getLevelInfo(target, level);
- if (!info)
- return 0;
- return info->height;
-}
-
-bool WebGLTexture::isValid(GLenum target, GLint level) const
-{
- const LevelInfo* info = getLevelInfo(target, level);
- if (!info)
- return 0;
- return info->valid;
-}
-
-bool WebGLTexture::isNPOT(GLsizei width, GLsizei height)
-{
- ASSERT(width >= 0 && height >= 0);
- if (!width || !height)
- return false;
- if ((width & (width - 1)) || (height & (height - 1)))
- return true;
- return false;
-}
-
-bool WebGLTexture::isNPOT() const
-{
- if (!object())
- return false;
- return m_isNPOT;
-}
-
-bool WebGLTexture::needToUseBlackTexture(TextureExtensionFlag flag) const
-{
- if (!object())
- return false;
- if (m_needToUseBlackTexture)
- return true;
- if ((m_isFloatType && !(flag & TextureFloatLinearExtensionEnabled)) || (m_isHalfFloatType && !(flag && TextureHalfFloatLinearExtensionEnabled))) {
- if (m_magFilter != GL_NEAREST || (m_minFilter != GL_NEAREST && m_minFilter != GL_NEAREST_MIPMAP_NEAREST))
- return true;
- }
- return false;
-}
-
-void WebGLTexture::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Platform3DObject object)
-{
- context3d->deleteTexture(object);
-}
-
-int WebGLTexture::mapTargetToIndex(GLenum target) const
-{
- if (m_target == GL_TEXTURE_2D) {
- if (target == GL_TEXTURE_2D)
- return 0;
- } else if (m_target == GL_TEXTURE_CUBE_MAP) {
- switch (target) {
- case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
- return 0;
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
- return 1;
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
- return 2;
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
- return 3;
- case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
- return 4;
- case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
- return 5;
- }
- }
- return -1;
-}
-
-bool WebGLTexture::canGenerateMipmaps()
-{
- if (isNPOT())
- return false;
- const LevelInfo& first = m_info[0][0];
- for (size_t ii = 0; ii < m_info.size(); ++ii) {
- const LevelInfo& info = m_info[ii][0];
- if (!info.valid
- || info.width != first.width || info.height != first.height
- || info.internalFormat != first.internalFormat || info.type != first.type
- || (m_info.size() > 1 && !m_isCubeComplete))
- return false;
- }
- return true;
-}
-
-GLint WebGLTexture::computeLevelCount(GLsizei width, GLsizei height)
-{
- // return 1 + log2Floor(std::max(width, height));
- GLsizei n = std::max(width, height);
- if (n <= 0)
- return 0;
- GLint log = 0;
- GLsizei value = n;
- for (int ii = 4; ii >= 0; --ii) {
- int shift = (1 << ii);
- GLsizei x = (value >> shift);
- if (x) {
- value = x;
- log += shift;
- }
- }
- ASSERT(value == 1);
- return log + 1;
-}
-
-void WebGLTexture::update()
-{
- m_isNPOT = false;
- for (size_t ii = 0; ii < m_info.size(); ++ii) {
- if (isNPOT(m_info[ii][0].width, m_info[ii][0].height)) {
- m_isNPOT = true;
- break;
- }
- }
- m_isComplete = true;
- m_isCubeComplete = true;
- const LevelInfo& first = m_info[0][0];
- GLint levelCount = computeLevelCount(first.width, first.height);
- if (levelCount < 1)
- m_isComplete = false;
- else {
- for (size_t ii = 0; ii < m_info.size() && m_isComplete; ++ii) {
- const LevelInfo& info0 = m_info[ii][0];
- if (!info0.valid
- || info0.width != first.width || info0.height != first.height
- || info0.internalFormat != first.internalFormat || info0.type != first.type
- || (m_info.size() > 1 && info0.width != info0.height)) {
- if (m_info.size() > 1)
- m_isCubeComplete = false;
- m_isComplete = false;
- break;
- }
- GLsizei width = info0.width;
- GLsizei height = info0.height;
- for (GLint level = 1; level < levelCount; ++level) {
- width = std::max(1, width >> 1);
- height = std::max(1, height >> 1);
- const LevelInfo& info = m_info[ii][level];
- if (!info.valid
- || info.width != width || info.height != height
- || info.internalFormat != info0.internalFormat || info.type != info0.type) {
- m_isComplete = false;
- break;
- }
-
- }
- }
- }
- m_isFloatType = m_info[0][0].type == GL_FLOAT;
- m_isHalfFloatType = m_info[0][0].type == GL_HALF_FLOAT_OES;
-
- m_needToUseBlackTexture = false;
- // NPOT
- if (m_isNPOT && ((m_minFilter != GL_NEAREST && m_minFilter != GL_LINEAR)
- || m_wrapS != GL_CLAMP_TO_EDGE || m_wrapT != GL_CLAMP_TO_EDGE))
- m_needToUseBlackTexture = true;
- // If it is a Cube texture, check Cube Completeness first
- if (m_info.size() > 1 && !m_isCubeComplete)
- m_needToUseBlackTexture = true;
- // Completeness
- if (!m_isComplete && m_minFilter != GL_NEAREST && m_minFilter != GL_LINEAR)
- m_needToUseBlackTexture = true;
-}
-
-const WebGLTexture::LevelInfo* WebGLTexture::getLevelInfo(GLenum target, GLint level) const
-{
- if (!object() || !m_target)
- return 0;
- int targetIndex = mapTargetToIndex(target);
- if (targetIndex < 0 || targetIndex >= static_cast<int>(m_info.size()))
- return 0;
- if (level < 0 || level >= static_cast<GLint>(m_info[targetIndex].size()))
- return 0;
- return &(m_info[targetIndex][level]);
-}
-
-}
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