149 lines
6.8 KiB
C++
149 lines
6.8 KiB
C++
/*
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* Copyright (C) 2021 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#if ENABLE(WEBGL)
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#include "WebGLMultiDraw.h"
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#include "ExtensionsGL.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(WebGLMultiDraw);
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static GCGLSpan<const int> makeSpanWithOffset(WebGLMultiDraw::Int32List& list, GCGLuint offset)
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{
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return makeGCGLSpan(list.data() + offset, list.length() - offset);
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}
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WebGLMultiDraw::WebGLMultiDraw(WebGLRenderingContextBase& context)
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: WebGLExtension(context)
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{
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context.graphicsContextGL()->getExtensions().ensureEnabled("GL_ANGLE_multi_draw"_s);
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context.graphicsContextGL()->getExtensions().ensureEnabled("GL_ANGLE_instanced_arrays"_s);
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}
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WebGLMultiDraw::~WebGLMultiDraw() = default;
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WebGLExtension::ExtensionName WebGLMultiDraw::getName() const
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{
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return WebGLMultiDrawName;
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}
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bool WebGLMultiDraw::supported(const WebGLRenderingContextBase& context)
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{
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return context.graphicsContextGL()->getExtensions().supports("GL_ANGLE_multi_draw"_s)
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&& context.graphicsContextGL()->getExtensions().supports("GL_ANGLE_instanced_arrays"_s);
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}
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void WebGLMultiDraw::multiDrawArraysWEBGL(GCGLenum mode, Int32List firstsList, GCGLuint firstsOffset, Int32List countsList, GCGLuint countsOffset, GCGLsizei drawcount)
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{
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if (!m_context || m_context->isContextLost())
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return;
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if (!validateDrawcount("multiDrawArraysWEBGL", drawcount)
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|| !validateOffset("multiDrawArraysWEBGL", "firstsOffset out of bounds", firstsList.length(), firstsOffset, drawcount)
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|| !validateOffset("multiDrawArraysWEBGL", "countsOffset out of bounds", countsList.length(), countsOffset, drawcount)) {
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return;
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}
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m_context->graphicsContextGL()->multiDrawArraysANGLE(mode, makeSpanWithOffset(firstsList, firstsOffset), makeSpanWithOffset(countsList, countsOffset), drawcount);
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}
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void WebGLMultiDraw::multiDrawArraysInstancedWEBGL(GCGLenum mode, Int32List firstsList, GCGLuint firstsOffset, Int32List countsList, GCGLuint countsOffset, Int32List instanceCountsList, GCGLuint instanceCountsOffset, GCGLsizei drawcount)
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{
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if (!m_context || m_context->isContextLost())
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return;
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if (!validateDrawcount("multiDrawArraysInstancedWEBGL", drawcount)
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|| !validateOffset("multiDrawArraysInstancedWEBGL", "firstsOffset out of bounds", firstsList.length(), firstsOffset, drawcount)
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|| !validateOffset("multiDrawArraysInstancedWEBGL", "countsOffset out of bounds", countsList.length(), countsOffset, drawcount)
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|| !validateOffset("multiDrawArraysInstancedWEBGL", "instanceCountsOffset out of bounds", instanceCountsList.length(), instanceCountsOffset, drawcount)) {
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return;
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}
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m_context->graphicsContextGL()->multiDrawArraysInstancedANGLE(mode, makeSpanWithOffset(firstsList, firstsOffset), makeSpanWithOffset(countsList, countsOffset), makeSpanWithOffset(instanceCountsList, instanceCountsOffset), drawcount);
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}
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void WebGLMultiDraw::multiDrawElementsWEBGL(GCGLenum mode, Int32List countsList, GCGLuint countsOffset, GCGLenum type, Int32List offsetsList, GCGLuint offsetsOffset, GCGLsizei drawcount)
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{
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if (!m_context || m_context->isContextLost())
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return;
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if (!validateDrawcount("multiDrawElementsWEBGL", drawcount)
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|| !validateOffset("multiDrawElementsWEBGL", "countsOffset out of bounds", countsList.length(), countsOffset, drawcount)
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|| !validateOffset("multiDrawElementsWEBGL", "offsetsOffset out of bounds", offsetsList.length(), offsetsOffset, drawcount)) {
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return;
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}
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m_context->graphicsContextGL()->multiDrawElementsANGLE(mode, makeSpanWithOffset(countsList, countsOffset), type, makeSpanWithOffset(offsetsList, offsetsOffset), drawcount);
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}
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void WebGLMultiDraw::multiDrawElementsInstancedWEBGL(GCGLenum mode, Int32List countsList, GCGLuint countsOffset, GCGLenum type, Int32List offsetsList, GCGLuint offsetsOffset, Int32List instanceCountsList, GCGLuint instanceCountsOffset, GCGLsizei drawcount)
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{
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if (!m_context || m_context->isContextLost())
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return;
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if (!validateDrawcount("multiDrawElementsWEBGL", drawcount)
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|| !validateOffset("multiDrawElementsWEBGL", "countsOffset out of bounds", countsList.length(), countsOffset, drawcount)
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|| !validateOffset("multiDrawElementsWEBGL", "offsetsOffset out of bounds", offsetsList.length(), offsetsOffset, drawcount)
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|| !validateOffset("multiDrawElementsWEBGL", "countsOffset out of bounds", instanceCountsList.length(), instanceCountsOffset, drawcount)) {
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return;
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}
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m_context->graphicsContextGL()->multiDrawElementsInstancedANGLE(mode, makeSpanWithOffset(countsList, countsOffset), type, makeSpanWithOffset(offsetsList, offsetsOffset), makeSpanWithOffset(instanceCountsList, instanceCountsOffset), drawcount);
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}
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bool WebGLMultiDraw::validateDrawcount(const char* functionName, GCGLsizei drawcount)
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{
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if (drawcount < 0) {
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m_context->synthesizeGLError(GraphicsContextGL::INVALID_VALUE, functionName, "negative drawcount");
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return false;
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}
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return true;
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}
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bool WebGLMultiDraw::validateOffset(const char* functionName, const char* outOfBoundsDescription, GCGLsizei size, GCGLuint offset, GCGLsizei drawcount)
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{
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if (drawcount > size) {
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m_context->synthesizeGLError(GraphicsContextGL::INVALID_OPERATION, functionName, "drawcount out of bounds");
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return false;
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}
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if (offset >= static_cast<GCGLuint>(size)) {
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m_context->synthesizeGLError(GraphicsContextGL::INVALID_OPERATION, functionName, outOfBoundsDescription);
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return false;
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}
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return true;
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}
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} // namespace WebCore
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#endif // ENABLE(WEBGL)
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