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/*
* Copyright 2022 The Chromium Authors. 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 AND ITS CONTRIBUTORS "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 OR ITS 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 "config.h"
#if ENABLE(WEBGL)
#include "WebGLMultiDrawInstancedBaseVertexBaseInstance.h"
#include "InspectorInstrumentation.h"
#include "WebGLUtilities.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(WebGLMultiDrawInstancedBaseVertexBaseInstance);
WebGLMultiDrawInstancedBaseVertexBaseInstance::WebGLMultiDrawInstancedBaseVertexBaseInstance(WebGLRenderingContextBase& context)
: WebGLExtension(context, WebGLExtensionName::WebGLMultiDrawInstancedBaseVertexBaseInstance)
{
context.protectedGraphicsContextGL()->ensureExtensionEnabled("GL_ANGLE_base_vertex_base_instance"_s);
// Spec requires WEBGL_multi_draw to be turned on implicitly here.
// Enable it both in the backend and in WebKit.
context.getExtension("WEBGL_multi_draw"_s);
}
WebGLMultiDrawInstancedBaseVertexBaseInstance::~WebGLMultiDrawInstancedBaseVertexBaseInstance() = default;
bool WebGLMultiDrawInstancedBaseVertexBaseInstance::supported(GraphicsContextGL& context)
{
return context.supportsExtension("GL_ANGLE_base_vertex_base_instance"_s)
&& context.supportsExtension("GL_ANGLE_multi_draw"_s);
}
void WebGLMultiDrawInstancedBaseVertexBaseInstance::multiDrawArraysInstancedBaseInstanceWEBGL(GCGLenum mode, Int32List&& firstsList, GCGLuint firstsOffset, Int32List&& countsList, GCGLuint countsOffset, Int32List&& instanceCountsList, GCGLuint instanceCountsOffset, Uint32List&& baseInstancesList, GCGLuint baseInstancesOffset, GCGLsizei drawcount)
{
if (isContextLost())
return;
auto& context = this->context();
if (!validateDrawcount(context, "multiDrawArraysInstancedBaseInstanceWEBGL"_s, drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL"_s, "firstsOffset out of bounds"_s, firstsList.length(), firstsOffset, drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL"_s, "countsOffset out of bounds"_s, countsList.length(), countsOffset, drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL"_s, "instanceCountsOffset out of bounds"_s, instanceCountsList.length(), instanceCountsOffset, drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL"_s, "baseInstancesOffset out of bounds"_s, baseInstancesList.length(), baseInstancesOffset, drawcount)) {
return;
}
if (!context.validateVertexArrayObject("multiDrawArraysInstancedBaseInstanceWEBGL"_s))
return;
if (context.m_currentProgram && InspectorInstrumentation::isWebGLProgramDisabled(context, *context.m_currentProgram))
return;
context.clearIfComposited(WebGLRenderingContextBase::CallerTypeDrawOrClear);
{
ScopedInspectorShaderProgramHighlight scopedHighlight { context };
context.protectedGraphicsContextGL()->multiDrawArraysInstancedBaseInstanceANGLE(mode, GCGLSpanTuple { firstsList.span().subspan(firstsOffset).data(), countsList.span().subspan(countsOffset).data(), instanceCountsList.span().subspan(instanceCountsOffset).data(), baseInstancesList.span().subspan(baseInstancesOffset).data(), static_cast<size_t>(drawcount) });
}
context.markContextChangedAndNotifyCanvasObserver();
}
void WebGLMultiDrawInstancedBaseVertexBaseInstance::multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL(GCGLenum mode, Int32List&& countsList, GCGLuint countsOffset, GCGLenum type, Int32List&& offsetsList, GCGLuint offsetsOffset, Int32List&& instanceCountsList, GCGLuint instanceCountsOffset, Int32List&& baseVerticesList, GCGLuint baseVerticesOffset, Uint32List&& baseInstancesList, GCGLuint baseInstancesOffset, GCGLsizei drawcount)
{
if (isContextLost())
return;
auto& context = this->context();
if (!validateDrawcount(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"_s, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"_s, "countsOffset out of bounds"_s, countsList.length(), countsOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"_s, "offsetsOffset out of bounds"_s, offsetsList.length(), offsetsOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"_s, "instanceCountsOffset out of bounds"_s, instanceCountsList.length(), instanceCountsOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"_s, "baseVerticesOffset out of bounds"_s, baseVerticesList.length(), baseVerticesOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"_s, "baseInstancesOffset out of bounds"_s, baseInstancesList.length(), baseInstancesOffset, drawcount)) {
return;
}
if (!context.validateVertexArrayObject("multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"_s))
return;
if (context.m_currentProgram && InspectorInstrumentation::isWebGLProgramDisabled(context, *context.m_currentProgram))
return;
context.clearIfComposited(WebGLRenderingContextBase::CallerTypeDrawOrClear);
{
ScopedInspectorShaderProgramHighlight scopedHighlight { context };
context.protectedGraphicsContextGL()->multiDrawElementsInstancedBaseVertexBaseInstanceANGLE(mode, GCGLSpanTuple { countsList.span().subspan(countsOffset).data(), offsetsList.span().subspan(offsetsOffset).data(), instanceCountsList.span().subspan(instanceCountsOffset).data(), baseVerticesList.span().subspan(baseVerticesOffset).data(), baseInstancesList.span().subspan(baseInstancesOffset).data(), static_cast<size_t>(drawcount) }, type);
}
context.markContextChangedAndNotifyCanvasObserver();
}
bool WebGLMultiDrawInstancedBaseVertexBaseInstance::validateDrawcount(WebGLRenderingContextBase& context, ASCIILiteral functionName, GCGLsizei drawcount)
{
if (drawcount < 0) {
context.synthesizeGLError(GraphicsContextGL::INVALID_VALUE, functionName, "negative drawcount"_s);
return false;
}
return true;
}
bool WebGLMultiDrawInstancedBaseVertexBaseInstance::validateOffset(WebGLRenderingContextBase& context, ASCIILiteral functionName, ASCIILiteral outOfBoundsDescription, GCGLsizei size, GCGLuint offset, GCGLsizei drawcount)
{
if (drawcount > size) {
context.synthesizeGLError(GraphicsContextGL::INVALID_OPERATION, functionName, "drawcount out of bounds"_s);
return false;
}
if (offset > static_cast<GCGLuint>(size - drawcount)) {
context.synthesizeGLError(GraphicsContextGL::INVALID_OPERATION, functionName, outOfBoundsDescription);
return false;
}
return true;
}
} // namespace WebCore
#endif // ENABLE(WEBGL)
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