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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 <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(WebGLMultiDrawInstancedBaseVertexBaseInstance);
WebGLMultiDrawInstancedBaseVertexBaseInstance::WebGLMultiDrawInstancedBaseVertexBaseInstance(WebGLRenderingContextBase& context)
: WebGLExtension(context)
{
context.graphicsContextGL()->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;
WebGLExtension::ExtensionName WebGLMultiDrawInstancedBaseVertexBaseInstance::getName() const
{
return WebGLMultiDrawInstancedBaseVertexBaseInstanceName;
}
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)
{
auto context = WebGLExtensionScopedContext(this);
if (context.isLost())
return;
if (!validateDrawcount(context, "multiDrawArraysInstancedBaseInstanceWEBGL", drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL", "firstsOffset out of bounds", firstsList.length(), firstsOffset, drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL", "countsOffset out of bounds", countsList.length(), countsOffset, drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL", "instanceCountsOffset out of bounds", instanceCountsList.length(), instanceCountsOffset, drawcount)
|| !validateOffset(context, "multiDrawArraysInstancedBaseInstanceWEBGL", "baseInstancesOffset out of bounds", baseInstancesList.length(), baseInstancesOffset, drawcount)) {
return;
}
if (!context->validateVertexArrayObject("multiDrawArraysInstancedBaseInstanceWEBGL"))
return;
if (context->m_currentProgram && InspectorInstrumentation::isWebGLProgramDisabled(*context, *context->m_currentProgram))
return;
context->clearIfComposited(WebGLRenderingContextBase::CallerTypeDrawOrClear);
{
InspectorScopedShaderProgramHighlight scopedHighlight(*context, context->m_currentProgram.get());
context->graphicsContextGL()->multiDrawArraysInstancedBaseInstanceANGLE(mode, GCGLSpanTuple { firstsList.data() + firstsOffset, countsList.data() + countsOffset, instanceCountsList.data() + instanceCountsOffset, baseInstancesList.data() + baseInstancesOffset, 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)
{
auto context = WebGLExtensionScopedContext(this);
if (context.isLost())
return;
if (!validateDrawcount(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL", drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL", "countsOffset out of bounds", countsList.length(), countsOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL", "offsetsOffset out of bounds", offsetsList.length(), offsetsOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL", "instanceCountsOffset out of bounds", instanceCountsList.length(), instanceCountsOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL", "baseVerticesOffset out of bounds", baseVerticesList.length(), baseVerticesOffset, drawcount)
|| !validateOffset(context, "multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL", "baseInstancesOffset out of bounds", baseInstancesList.length(), baseInstancesOffset, drawcount)) {
return;
}
if (!context->validateVertexArrayObject("multiDrawElementsInstancedBaseVertexBaseInstanceWEBGL"))
return;
if (context->m_currentProgram && InspectorInstrumentation::isWebGLProgramDisabled(*context, *context->m_currentProgram))
return;
context->clearIfComposited(WebGLRenderingContextBase::CallerTypeDrawOrClear);
{
InspectorScopedShaderProgramHighlight scopedHighlight(*context, context->m_currentProgram.get());
context->graphicsContextGL()->multiDrawElementsInstancedBaseVertexBaseInstanceANGLE(mode, GCGLSpanTuple { countsList.data() + countsOffset, offsetsList.data() + offsetsOffset, instanceCountsList.data() + instanceCountsOffset, baseVerticesList.data() + baseVerticesOffset, baseInstancesList.data() + baseInstancesOffset, static_cast<size_t>(drawcount) }, type);
}
context->markContextChangedAndNotifyCanvasObserver();
}
bool WebGLMultiDrawInstancedBaseVertexBaseInstance::validateDrawcount(WebGLExtensionScopedContext& context, const char* functionName, GCGLsizei drawcount)
{
if (drawcount < 0) {
context->synthesizeGLError(GraphicsContextGL::INVALID_VALUE, functionName, "negative drawcount");
return false;
}
return true;
}
bool WebGLMultiDrawInstancedBaseVertexBaseInstance::validateOffset(WebGLExtensionScopedContext& context, const char* functionName, const char* outOfBoundsDescription, GCGLsizei size, GCGLuint offset, GCGLsizei drawcount)
{
if (drawcount > size) {
context->synthesizeGLError(GraphicsContextGL::INVALID_OPERATION, functionName, "drawcount out of bounds");
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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