1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrVertexBatch.h"
#include "GrBatchFlushState.h"
#include "GrResourceProvider.h"
GrVertexBatch::GrVertexBatch() : fDrawArrays(1) {}
void GrVertexBatch::onPrepare(GrBatchFlushState* state) {
Target target(state, this);
this->onPrepareDraws(&target);
}
void* GrVertexBatch::InstancedHelper::init(Target* target, GrPrimitiveType primType,
size_t vertexStride, const GrIndexBuffer* indexBuffer,
int verticesPerInstance, int indicesPerInstance,
int instancesToDraw) {
SkASSERT(target);
if (!indexBuffer) {
return nullptr;
}
const GrVertexBuffer* vertexBuffer;
int firstVertex;
int vertexCount = verticesPerInstance * instancesToDraw;
void* vertices = target->makeVertexSpace(vertexStride, vertexCount, &vertexBuffer, &firstVertex);
if (!vertices) {
SkDebugf("Vertices could not be allocated for instanced rendering.");
return nullptr;
}
SkASSERT(vertexBuffer);
size_t ibSize = indexBuffer->gpuMemorySize();
int maxInstancesPerDraw = static_cast<int>(ibSize / (sizeof(uint16_t) * indicesPerInstance));
fVertices.initInstanced(primType, vertexBuffer, indexBuffer,
firstVertex, verticesPerInstance, indicesPerInstance, instancesToDraw,
maxInstancesPerDraw);
return vertices;
}
void GrVertexBatch::InstancedHelper::recordDraw(Target* target) {
SkASSERT(fVertices.instanceCount());
target->draw(fVertices);
}
void* GrVertexBatch::QuadHelper::init(Target* target, size_t vertexStride,
int quadsToDraw) {
SkAutoTUnref<const GrIndexBuffer> quadIndexBuffer(
target->resourceProvider()->refQuadIndexBuffer());
if (!quadIndexBuffer) {
SkDebugf("Could not get quad index buffer.");
return nullptr;
}
return this->INHERITED::init(target, kTriangles_GrPrimitiveType, vertexStride,
quadIndexBuffer, kVerticesPerQuad, kIndicesPerQuad, quadsToDraw);
}
void GrVertexBatch::onDraw(GrBatchFlushState* state) {
int uploadCnt = fInlineUploads.count();
int currUpload = 0;
// Iterate of all the drawArrays. Before issuing the draws in each array, perform any inline
// uploads.
for (SkTLList<DrawArray>::Iter da(fDrawArrays); da.get(); da.next()) {
state->advanceLastFlushedToken();
while (currUpload < uploadCnt &&
fInlineUploads[currUpload]->lastUploadToken() <= state->lastFlushedToken()) {
fInlineUploads[currUpload++]->upload(state->uploader());
}
const GrVertexBatch::DrawArray& drawArray = *da.get();
GrProgramDesc desc;
const GrPipeline* pipeline = this->pipeline();
const GrPrimitiveProcessor* primProc = drawArray.fPrimitiveProcessor.get();
state->gpu()->buildProgramDesc(&desc, *primProc, *pipeline, fBatchTracker);
GrGpu::DrawArgs args(primProc, pipeline, &desc, &fBatchTracker);
int drawCount = drawArray.fDraws.count();
for (int i = 0; i < drawCount; i++) {
state->gpu()->draw(args, drawArray.fDraws[i]);
}
}
}
|
