1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program Reference Renderer
3 * -----------------------------------------------
4 *
5 * Copyright 2014 The Android Open Source Project
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 *//*!
20 * \file
21 * \brief Primitive packet
22 *//*--------------------------------------------------------------------*/
23
24 #include "rrPrimitivePacket.hpp"
25
26 #include "rrVertexPacket.hpp"
27
28 namespace rr
29 {
30
GeometryEmitter(VertexPacketAllocator & vpalloc,size_t numVertices)31 GeometryEmitter::GeometryEmitter(VertexPacketAllocator &vpalloc, size_t numVertices)
32 : m_vpalloc(vpalloc)
33 , m_numEmitted(0)
34 , m_maxVertices(numVertices)
35 {
36 }
37
EmitVertex(const tcu::Vec4 & position,float pointSize,const GenericVec4 * varyings,int primitiveID)38 void GeometryEmitter::EmitVertex(const tcu::Vec4 &position, float pointSize, const GenericVec4 *varyings,
39 int primitiveID)
40 {
41 VertexPacket *packet;
42
43 if (++m_numEmitted > m_maxVertices)
44 {
45 DE_FATAL("Undefined results, too many vertices emitted.");
46 return;
47 }
48
49 packet = m_vpalloc.alloc();
50
51 packet->position = position;
52 packet->pointSize = pointSize;
53 packet->primitiveID = primitiveID;
54
55 for (size_t ndx = 0; ndx < m_vpalloc.getNumVertexOutputs(); ++ndx)
56 packet->outputs[ndx] = varyings[ndx];
57
58 m_emitted.push_back(packet);
59 }
60
EndPrimitive(void)61 void GeometryEmitter::EndPrimitive(void)
62 {
63 m_numEmitted = 0;
64 m_emitted.push_back(DE_NULL);
65 }
66
moveEmittedTo(std::vector<VertexPacket * > & output)67 void GeometryEmitter::moveEmittedTo(std::vector<VertexPacket *> &output)
68 {
69 m_emitted.swap(output);
70 m_emitted.clear();
71 }
72
73 } // namespace rr
74