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OpenGLDevice: Work around lack of base_vertex in GLES3.1

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This commit is contained in:
Stenzek
2023-12-28 18:22:12 +10:00
parent e60654de38
commit 344d2ccd5d
4 changed files with 54 additions and 24 deletions
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31
src/util/opengl_device.cpp
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@ -1014,15 +1014,42 @@ void OpenGLDevice::UnbindPipeline(const OpenGLPipeline* pl)
}
}
ALWAYS_INLINE_RELEASE void OpenGLDevice::SetVertexBufferOffsets(u32 base_vertex)
{
const OpenGLPipeline::VertexArrayCacheKey& va = m_last_vao->first;
const size_t stride = va.vertex_attribute_stride;
for (u32 i = 0; i < va.num_vertex_attributes; i++)
{
glBindVertexBuffer(i, m_vertex_buffer->GetGLBufferId(), base_vertex * stride + va.vertex_attributes[i].offset,
static_cast<GLsizei>(stride));
}
}
void OpenGLDevice::Draw(u32 vertex_count, u32 base_vertex)
{
glDrawArrays(m_current_pipeline->GetTopology(), base_vertex, vertex_count);
if (glDrawElementsBaseVertex) [[likely]]
{
glDrawArrays(m_current_pipeline->GetTopology(), base_vertex, vertex_count);
return;
}
SetVertexBufferOffsets(base_vertex);
glDrawArrays(m_current_pipeline->GetTopology(), 0, vertex_count);
}
void OpenGLDevice::DrawIndexed(u32 index_count, u32 base_index, u32 base_vertex)
{
if (glDrawElementsBaseVertex) [[likely]]
{
const void* indices = reinterpret_cast<const void*>(static_cast<uintptr_t>(base_index) * sizeof(u16));
glDrawElementsBaseVertex(m_current_pipeline->GetTopology(), index_count, GL_UNSIGNED_SHORT, indices, base_vertex);
return;
}
SetVertexBufferOffsets(base_vertex);
const void* indices = reinterpret_cast<const void*>(static_cast<uintptr_t>(base_index) * sizeof(u16));
glDrawElementsBaseVertex(m_current_pipeline->GetTopology(), index_count, GL_UNSIGNED_SHORT, indices, base_vertex);
glDrawElements(m_current_pipeline->GetTopology(), index_count, GL_UNSIGNED_SHORT, indices);
}
void OpenGLDevice::MapVertexBuffer(u32 vertex_size, u32 vertex_count, void** map_ptr, u32* map_space,