1 /*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "GrGpuCommandBuffer.h"
9 #include "GrMeshDrawOp.h"
10 #include "GrOpFlushState.h"
11 #include "GrResourceProvider.h"
12
GrMeshDrawOp(uint32_t classID)13 GrMeshDrawOp::GrMeshDrawOp(uint32_t classID)
14 : INHERITED(classID), fBaseDrawToken(GrDrawOpUploadToken::AlreadyFlushedToken()) {}
15
onPrepare(GrOpFlushState * state)16 void GrMeshDrawOp::onPrepare(GrOpFlushState* state) {
17 Target target(state, this);
18 this->onPrepareDraws(&target);
19 }
20
init(Target * target,size_t vertexStride,const GrBuffer * indexBuffer,int verticesPerRepetition,int indicesPerRepetition,int repeatCount)21 void* GrMeshDrawOp::PatternHelper::init(Target* target, size_t vertexStride,
22 const GrBuffer* indexBuffer, int verticesPerRepetition,
23 int indicesPerRepetition, int repeatCount) {
24 SkASSERT(target);
25 if (!indexBuffer) {
26 return nullptr;
27 }
28 const GrBuffer* vertexBuffer;
29 int firstVertex;
30 int vertexCount = verticesPerRepetition * repeatCount;
31 void* vertices =
32 target->makeVertexSpace(vertexStride, vertexCount, &vertexBuffer, &firstVertex);
33 if (!vertices) {
34 SkDebugf("Vertices could not be allocated for instanced rendering.");
35 return nullptr;
36 }
37 SkASSERT(vertexBuffer);
38 size_t ibSize = indexBuffer->gpuMemorySize();
39 int maxRepetitions = static_cast<int>(ibSize / (sizeof(uint16_t) * indicesPerRepetition));
40
41 fMesh.setIndexedPatterned(indexBuffer, indicesPerRepetition, verticesPerRepetition,
42 repeatCount, maxRepetitions);
43 fMesh.setVertexData(vertexBuffer, firstVertex);
44 return vertices;
45 }
46
recordDraw(Target * target,const GrGeometryProcessor * gp,const GrPipeline * pipeline)47 void GrMeshDrawOp::PatternHelper::recordDraw(Target* target, const GrGeometryProcessor* gp,
48 const GrPipeline* pipeline) {
49 target->draw(gp, pipeline, fMesh);
50 }
51
init(Target * target,size_t vertexStride,int quadsToDraw)52 void* GrMeshDrawOp::QuadHelper::init(Target* target, size_t vertexStride, int quadsToDraw) {
53 sk_sp<const GrBuffer> quadIndexBuffer(target->resourceProvider()->refQuadIndexBuffer());
54 if (!quadIndexBuffer) {
55 SkDebugf("Could not get quad index buffer.");
56 return nullptr;
57 }
58 return this->INHERITED::init(target, vertexStride, quadIndexBuffer.get(), kVerticesPerQuad,
59 kIndicesPerQuad, quadsToDraw);
60 }
61
onExecute(GrOpFlushState * state)62 void GrMeshDrawOp::onExecute(GrOpFlushState* state) {
63 int currUploadIdx = 0;
64 int currMeshIdx = 0;
65
66 SkASSERT(fQueuedDraws.empty() || fBaseDrawToken == state->nextTokenToFlush());
67
68 for (int currDrawIdx = 0; currDrawIdx < fQueuedDraws.count(); ++currDrawIdx) {
69 GrDrawOpUploadToken drawToken = state->nextTokenToFlush();
70 while (currUploadIdx < fInlineUploads.count() &&
71 fInlineUploads[currUploadIdx].fUploadBeforeToken == drawToken) {
72 state->commandBuffer()->inlineUpload(state, fInlineUploads[currUploadIdx++].fUpload,
73 state->drawOpArgs().fRenderTarget);
74 }
75 const QueuedDraw& draw = fQueuedDraws[currDrawIdx];
76 SkASSERT(draw.fPipeline->getRenderTarget() == state->drawOpArgs().fRenderTarget);
77 state->commandBuffer()->draw(*draw.fPipeline, *draw.fGeometryProcessor.get(),
78 fMeshes.begin() + currMeshIdx, nullptr, draw.fMeshCnt,
79 this->bounds());
80 currMeshIdx += draw.fMeshCnt;
81 state->flushToken();
82 }
83 SkASSERT(currUploadIdx == fInlineUploads.count());
84 SkASSERT(currMeshIdx == fMeshes.count());
85 fQueuedDraws.reset();
86 fInlineUploads.reset();
87 }
88
89 //////////////////////////////////////////////////////////////////////////////
90
draw(const GrGeometryProcessor * gp,const GrPipeline * pipeline,const GrMesh & mesh)91 void GrMeshDrawOp::Target::draw(const GrGeometryProcessor* gp, const GrPipeline* pipeline,
92 const GrMesh& mesh) {
93 GrMeshDrawOp* op = this->meshDrawOp();
94 op->fMeshes.push_back(mesh);
95 if (!op->fQueuedDraws.empty()) {
96 // If the last draw shares a geometry processor and pipeline and there are no intervening
97 // uploads, add this mesh to it.
98 GrMeshDrawOp::QueuedDraw& lastDraw = op->fQueuedDraws.back();
99 if (lastDraw.fGeometryProcessor == gp && lastDraw.fPipeline == pipeline &&
100 (op->fInlineUploads.empty() ||
101 op->fInlineUploads.back().fUploadBeforeToken != this->nextDrawToken())) {
102 ++lastDraw.fMeshCnt;
103 return;
104 }
105 }
106 GrMeshDrawOp::QueuedDraw& draw = op->fQueuedDraws.push_back();
107 GrDrawOpUploadToken token = this->state()->issueDrawToken();
108 draw.fGeometryProcessor.reset(gp);
109 draw.fPipeline = pipeline;
110 draw.fMeshCnt = 1;
111 if (op->fQueuedDraws.count() == 1) {
112 op->fBaseDrawToken = token;
113 }
114 }
115