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authorbunnei <bunneidev@gmail.com>2018-08-20 20:32:50 +0200
committerGitHub <noreply@github.com>2018-08-20 20:32:50 +0200
commit028d90eb79b75292d352cc8d4b96a2df74cd6b6e (patch)
treeab7df9fd12b103b7c832e9691d2abbb72ca38e93 /src
parentMerge pull request #1115 from Subv/texs_mask (diff)
parentGLRasterizer: Implemented instanced vertex arrays. (diff)
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Diffstat (limited to '')
-rw-r--r--src/video_core/engines/maxwell_3d.h15
-rw-r--r--src/video_core/renderer_opengl/gl_rasterizer.cpp19
2 files changed, 30 insertions, 4 deletions
diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h
index 771eb5abc..3c869d3a1 100644
--- a/src/video_core/engines/maxwell_3d.h
+++ b/src/video_core/engines/maxwell_3d.h
@@ -679,7 +679,19 @@ public:
INSERT_PADDING_WORDS(0x7);
- INSERT_PADDING_WORDS(0x46);
+ INSERT_PADDING_WORDS(0x20);
+
+ struct {
+ u32 is_instanced[NumVertexArrays];
+
+ /// Returns whether the vertex array specified by index is supposed to be
+ /// accessed per instance or not.
+ bool IsInstancingEnabled(u32 index) const {
+ return is_instanced[index];
+ }
+ } instanced_arrays;
+
+ INSERT_PADDING_WORDS(0x6);
Cull cull;
@@ -928,6 +940,7 @@ ASSERT_REG_POSITION(point_coord_replace, 0x581);
ASSERT_REG_POSITION(code_address, 0x582);
ASSERT_REG_POSITION(draw, 0x585);
ASSERT_REG_POSITION(index_array, 0x5F2);
+ASSERT_REG_POSITION(instanced_arrays, 0x620);
ASSERT_REG_POSITION(cull, 0x646);
ASSERT_REG_POSITION(clear_buffers, 0x674);
ASSERT_REG_POSITION(query, 0x6C0);
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 93eadde7a..fe1f55e85 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -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.