Mirrors/yuzu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge pull request #1104 from Subv/instanced_arrays

Browse source 
GLRasterizer: Implemented instanced vertex arrays.
This commit is contained in:
bunnei 2018-08-20 14:32:50 -04:00 • committed by GitHub
commit 028d90eb79
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 30 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -98,7 +98,8 @@ RasterizerOpenGL::~RasterizerOpenGL() {}
std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
GLintptr buffer_offset) {
MICROPROFILE_SCOPE(OpenGL_VAO);
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
const auto& gpu = Core::System::GetInstance().GPU().Maxwell3D();
const auto& regs = gpu.regs;
state.draw.vertex_array = hw_vao.handle;
state.draw.vertex_buffer = stream_buffer.GetHandle();
@ -110,9 +111,13 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
if (!vertex_array.IsEnabled())
continue;
const Tegra::GPUVAddr start = vertex_array.StartAddress();
Tegra::GPUVAddr start = vertex_array.StartAddress();
const Tegra::GPUVAddr end = regs.vertex_array_limit[index].LimitAddress();
if (regs.instanced_arrays.IsInstancingEnabled(index) && vertex_array.divisor != 0) {
start += vertex_array.stride * (gpu.state.current_instance / vertex_array.divisor);
}
ASSERT(end > start);
u64 size = end - start + 1;
@ -124,7 +129,15 @@ std::pair<u8*, GLintptr> RasterizerOpenGL::SetupVertexArrays(u8* array_ptr,
glBindVertexBuffer(index, stream_buffer.GetHandle(), vertex_buffer_offset,
vertex_array.stride);
ASSERT_MSG(vertex_array.divisor == 0, "Instanced vertex arrays are not supported");
if (regs.instanced_arrays.IsInstancingEnabled(index) && vertex_array.divisor != 0) {
// Tell OpenGL that this is an instanced vertex buffer to prevent accessing different
// indexes on each vertex. We do the instance indexing manually by incrementing the
// start address of the vertex buffer.
glVertexBindingDivisor(index, 1);
} else {
// Disable the vertex buffer instancing.
glVertexBindingDivisor(index, 0);
}
}
// Use the vertex array as-is, assumes that the data is formatted correctly for OpenGL.