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/*
* Copyright 2009, Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*/
// This file contains the implementation of the PrimitiveCB class.
#include "core/cross/precompile.h"
#include "core/cross/command_buffer/param_cache_cb.h"
#include "core/cross/command_buffer/primitive_cb.h"
#include "core/cross/command_buffer/renderer_cb.h"
#include "core/cross/command_buffer/buffer_cb.h"
#include "core/cross/command_buffer/effect_cb.h"
#include "core/cross/command_buffer/stream_bank_cb.h"
#include "core/cross/error.h"
#include "command_buffer/common/cross/gapi_interface.h"
#include "command_buffer/client/cross/cmd_buffer_helper.h"
// TODO: add unit tests.
namespace o3d {
using command_buffer::ResourceId;
using command_buffer::CommandBufferHelper;
using command_buffer::CommandBufferEntry;
using command_buffer::GAPIInterface;
using command_buffer::kInvalidResource;
namespace vertex_struct = command_buffer::vertex_struct;
PrimitiveCB::PrimitiveCB(ServiceLocator* service_locator, RendererCB *renderer)
: Primitive(service_locator),
renderer_(renderer) {
}
PrimitiveCB::~PrimitiveCB() {
}
// Converts an O3D primitive type to a command-buffer one.
static command_buffer::PrimitiveType GetCBPrimitiveType(
Primitive::PrimitiveType primitive_type) {
switch (primitive_type) {
case Primitive::LINELIST:
return command_buffer::kLines;
case Primitive::LINESTRIP:
return command_buffer::kLineStrips;
case Primitive::TRIANGLELIST:
return command_buffer::kTriangles;
case Primitive::TRIANGLESTRIP:
return command_buffer::kTriangleStrips;
case Primitive::TRIANGLEFAN:
return command_buffer::kTriangleFans;
default:
// Note that POINTLIST falls into this case, for compatibility with D3D.
return command_buffer::kMaxPrimitiveType;
}
}
// Sends the draw commands to the command buffers.
void PrimitiveCB::PlatformSpecificRender(Renderer* renderer,
DrawElement* draw_element,
Material* material,
ParamObject* override,
ParamCache* param_cache) {
DLOG_ASSERT(draw_element);
DLOG_ASSERT(param_cache);
DLOG_ASSERT(material);
EffectCB *effect_cb = down_cast<EffectCB*>(material->effect());
DLOG_ASSERT(effect_cb);
StreamBankCB* stream_bank_cb = down_cast<StreamBankCB*>(stream_bank());
DLOG_ASSERT(stream_bank_cb);
ParamCacheCB *param_cache_cb = down_cast<ParamCacheCB *>(param_cache);
if (!param_cache_cb->ValidateAndCacheParams(effect_cb,
draw_element,
this,
stream_bank_cb,
material,
override)) {
// TODO: should we do this here, or on the service side ?
// InsertMissingVertexStreams();
}
IndexBufferCB *index_buffer_cb =
down_cast<IndexBufferCB *>(index_buffer());
if (!index_buffer_cb) {
// TODO(gman): draw non-indexed primitives.
DLOG(INFO) << "Trying to draw with an empty index buffer.";
return;
}
command_buffer::PrimitiveType cb_primitive_type =
GetCBPrimitiveType(primitive_type_);
if (cb_primitive_type == command_buffer::kMaxPrimitiveType) {
DLOG(INFO) << "Invalid primitive type (" << primitive_type_ << ").";
return;
}
// Make sure our streams are up to date (skinned, etc..)
stream_bank_cb->UpdateStreams();
stream_bank_cb->BindStreamsForRendering();
CommandBufferHelper *helper = renderer_->helper();
// Sets current effect.
// TODO: cache current effect ?
helper->SetEffect(effect_cb->resource_id());
param_cache_cb->RunHandlers(helper);
// Draws.
helper->DrawIndexed(cb_primitive_type, index_buffer_cb->resource_id(),
0, number_primitives_, 0, number_vertices_ - 1);
}
} // namespace o3d
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