OrdinaryMagician/vkdoom_m
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- use an indexed vertex buffer to render the flats.

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Right now this has no advantage but it allows optimizing the data, e.g. rendering an entire sector in one go instead of per subsector.
This commit is contained in:
Christoph Oelckers 2018-05-19 13:33:28 +02:00
commit fd3681dae2
10 changed files with 202 additions and 9 deletions
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13
src/gl/data/gl_vertexbuffer.cpp
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@ -125,6 +125,8 @@ void FSimpleVertexBuffer::set(FSimpleVertex *verts, int count)
FFlatVertexBuffer::FFlatVertexBuffer(int width, int height)
: FVertexBuffer(!gl.legacyMode), FFlatVertexGenerator(width, height)
{
ibo_id = 0;
if (gl.buffermethod != BM_LEGACY) glGenBuffers(1, &ibo_id);
switch (gl.buffermethod)
{
case BM_PERSISTENT:
@ -170,6 +172,11 @@ FFlatVertexBuffer::~FFlatVertexBuffer()
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
if (ibo_id != 0)
{
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &ibo_id);
}
if (gl.legacyMode)
{
delete[] map;
@ -188,6 +195,7 @@ void FFlatVertexBuffer::OutputResized(int width, int height)
void FFlatVertexBuffer::BindVBO()
{
glBindBuffer(GL_ARRAY_BUFFER, vbo_id);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo_id);
if (!gl.legacyMode)
{
glVertexAttribPointer(VATTR_VERTEX, 3, GL_FLOAT, false, sizeof(FFlatVertex), &VTO->x);
@ -245,4 +253,9 @@ void FFlatVertexBuffer::CreateVBO()
Map();
memcpy(map, &vbo_shadowdata[0], vbo_shadowdata.Size() * sizeof(FFlatVertex));
Unmap();
if (ibo_id > 0)
{
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo_id);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, ibo_data.Size() * sizeof(uint32_t), &ibo_data[0], GL_STATIC_DRAW);
}
}

6
src/gl/data/gl_vertexbuffer.h
View file

@ -95,6 +95,7 @@ public:
class FFlatVertexBuffer : public FVertexBuffer, public FFlatVertexGenerator
{
unsigned int ibo_id;
FFlatVertex *map;
unsigned int mIndex;
std::atomic<unsigned int> mCurIndex;
@ -177,6 +178,11 @@ public:
#endif
uint32_t *GetIndexPointer() const
{
return ibo_id == 0 ? &ibo_data[0] : nullptr;
}
void CheckPlanes(sector_t *sector)
{
FFlatVertexGenerator::CheckPlanes(sector, map);