summaryrefslogtreecommitdiff
path: root/src/mbgl/renderer/render_static_data.cpp
blob: 0814d6341ba074053ec44d006762be46046aff28 (plain)
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
#include <mbgl/renderer/render_static_data.hpp>
#include <mbgl/gfx/context.hpp>
#include <mbgl/programs/program_parameters.hpp>

namespace mbgl {

static gfx::VertexVector<gfx::Vertex<PositionOnlyLayoutAttributes>> tileVertices() {
    gfx::VertexVector<gfx::Vertex<PositionOnlyLayoutAttributes>> result;
    result.emplace_back(gfx::Vertex<PositionOnlyLayoutAttributes>({{{ 0,            0 }}}));
    result.emplace_back(gfx::Vertex<PositionOnlyLayoutAttributes>({{{ util::EXTENT, 0 }}}));
    result.emplace_back(gfx::Vertex<PositionOnlyLayoutAttributes>({{{ 0, util::EXTENT }}}));
    result.emplace_back(gfx::Vertex<PositionOnlyLayoutAttributes>({{{ util::EXTENT, util::EXTENT }}}));
    return result;
}

static gfx::IndexVector<gfx::Triangles> quadTriangleIndices() {
    gfx::IndexVector<gfx::Triangles> result;
    result.emplace_back(0, 1, 2);
    result.emplace_back(1, 2, 3);
    return result;
}

static gfx::IndexVector<gfx::LineStrip> tileLineStripIndices() {
    gfx::IndexVector<gfx::LineStrip> result;
    result.emplace_back(0);
    result.emplace_back(1);
    result.emplace_back(3);
    result.emplace_back(2);
    result.emplace_back(0);
    return result;
}

static gfx::VertexVector<RasterLayoutVertex> rasterVertices() {
    gfx::VertexVector<RasterLayoutVertex> result;
    result.emplace_back(RasterProgram::layoutVertex({ 0, 0 }, { 0, 0 }));
    result.emplace_back(RasterProgram::layoutVertex({ util::EXTENT, 0 }, { util::EXTENT, 0 }));
    result.emplace_back(RasterProgram::layoutVertex({ 0, util::EXTENT }, { 0, util::EXTENT }));
    result.emplace_back(RasterProgram::layoutVertex({ util::EXTENT, util::EXTENT }, { util::EXTENT, util::EXTENT }));
    return result;
}

static gfx::VertexVector<HeatmapTextureLayoutVertex> heatmapTextureVertices() {
    gfx::VertexVector<HeatmapTextureLayoutVertex> result;
    result.emplace_back(HeatmapTextureProgram::layoutVertex({ 0, 0 }));
    result.emplace_back(HeatmapTextureProgram::layoutVertex({ 1, 0 }));
    result.emplace_back(HeatmapTextureProgram::layoutVertex({ 0, 1 }));
    result.emplace_back(HeatmapTextureProgram::layoutVertex({ 1, 1 }));
    return result;
}

RenderStaticData::RenderStaticData(gfx::Context& context, float pixelRatio, const optional<std::string>& programCacheDir)
    : tileVertexBuffer(context.createVertexBuffer(tileVertices())),
      rasterVertexBuffer(context.createVertexBuffer(rasterVertices())),
      heatmapTextureVertexBuffer(context.createVertexBuffer(heatmapTextureVertices())),
      quadTriangleIndexBuffer(context.createIndexBuffer(quadTriangleIndices())),
      tileBorderIndexBuffer(context.createIndexBuffer(tileLineStripIndices())),
      programs(context, ProgramParameters { pixelRatio, false, programCacheDir })
#ifndef NDEBUG
    , overdrawPrograms(context, ProgramParameters { pixelRatio, true, programCacheDir })
#endif
{
    tileTriangleSegments.emplace_back(0, 0, 4, 6);
    tileBorderSegments.emplace_back(0, 0, 4, 5);
    rasterSegments.emplace_back(0, 0, 4, 6);
    heatmapTextureSegments.emplace_back(0, 0, 4, 6);
}

} // namespace mbgl