diff options
Diffstat (limited to '')
-rw-r--r-- | src/video_core/engines/maxwell_3d.h | 9 | ||||
-rw-r--r-- | src/video_core/renderer_opengl/gl_rasterizer.cpp | 70 | ||||
-rw-r--r-- | src/video_core/renderer_opengl/gl_rasterizer.h | 14 |
3 files changed, 83 insertions, 10 deletions
diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h index 8752a1cfb..ba9c76593 100644 --- a/src/video_core/engines/maxwell_3d.h +++ b/src/video_core/engines/maxwell_3d.h @@ -634,6 +634,11 @@ public: u32 address_low; s32 buffer_size; s32 buffer_offset; + + GPUVAddr Address() const { + return static_cast<GPUVAddr>((static_cast<GPUVAddr>(address_high) << 32) | + address_low); + } }; static_assert(sizeof(TransformFeedbackBinding) == 32); @@ -652,6 +657,10 @@ public: return shader_config[index].enable != 0; } + bool IsShaderConfigEnabled(Regs::ShaderProgram type) const { + return IsShaderConfigEnabled(static_cast<std::size_t>(type)); + } + union { struct { INSERT_UNION_PADDING_WORDS(0x45); diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp index 8a2db8e36..1af4268a4 100644 --- a/src/video_core/renderer_opengl/gl_rasterizer.cpp +++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp @@ -496,7 +496,6 @@ void RasterizerOpenGL::Draw(bool is_indexed, bool is_instanced) { SyncCullMode(); SyncPrimitiveRestart(); SyncScissorTest(); - SyncTransformFeedback(); SyncPointState(); SyncPolygonOffset(); SyncAlphaTest(); @@ -569,7 +568,7 @@ void RasterizerOpenGL::Draw(bool is_indexed, bool is_instanced) { glTextureBarrier(); } - ++num_queued_commands; + BeginTransformFeedback(primitive_mode); const GLuint base_instance = static_cast<GLuint>(gpu.regs.vb_base_instance); const GLsizei num_instances = @@ -608,6 +607,10 @@ void RasterizerOpenGL::Draw(bool is_indexed, bool is_instanced) { num_instances, base_instance); } } + + EndTransformFeedback(); + + ++num_queued_commands; } void RasterizerOpenGL::DispatchCompute(GPUVAddr code_addr) { @@ -1290,11 +1293,6 @@ void RasterizerOpenGL::SyncScissorTest() { } } -void RasterizerOpenGL::SyncTransformFeedback() { - const auto& regs = system.GPU().Maxwell3D().regs; - UNIMPLEMENTED_IF_MSG(regs.tfb_enabled != 0, "Transform feedbacks are not implemented"); -} - void RasterizerOpenGL::SyncPointState() { auto& gpu = system.GPU().Maxwell3D(); auto& flags = gpu.dirty.flags; @@ -1370,4 +1368,62 @@ void RasterizerOpenGL::SyncFramebufferSRGB() { oglEnable(GL_FRAMEBUFFER_SRGB, gpu.regs.framebuffer_srgb); } +void RasterizerOpenGL::BeginTransformFeedback(GLenum primitive_mode) { + const auto& regs = system.GPU().Maxwell3D().regs; + if (regs.tfb_enabled == 0) { + return; + } + + UNIMPLEMENTED_IF(regs.IsShaderConfigEnabled(Maxwell::ShaderProgram::TesselationControl) || + regs.IsShaderConfigEnabled(Maxwell::ShaderProgram::TesselationEval) || + regs.IsShaderConfigEnabled(Maxwell::ShaderProgram::Geometry)); + + for (std::size_t index = 0; index < Maxwell::NumTransformFeedbackBuffers; ++index) { + const auto& binding = regs.tfb_bindings[index]; + if (!binding.buffer_enable) { + if (enabled_transform_feedback_buffers[index]) { + glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, static_cast<GLuint>(index), 0, 0, + 0); + } + enabled_transform_feedback_buffers[index] = false; + continue; + } + enabled_transform_feedback_buffers[index] = true; + + auto& tfb_buffer = transform_feedback_buffers[index]; + tfb_buffer.Create(); + + const GLuint handle = tfb_buffer.handle; + const std::size_t size = binding.buffer_size; + glNamedBufferData(handle, static_cast<GLsizeiptr>(size), nullptr, GL_STREAM_COPY); + glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, static_cast<GLuint>(index), handle, 0, + static_cast<GLsizeiptr>(size)); + } + + glBeginTransformFeedback(GL_POINTS); +} + +void RasterizerOpenGL::EndTransformFeedback() { + const auto& regs = system.GPU().Maxwell3D().regs; + if (regs.tfb_enabled == 0) { + return; + } + + glEndTransformFeedback(); + + for (std::size_t index = 0; index < Maxwell::NumTransformFeedbackBuffers; ++index) { + const auto& binding = regs.tfb_bindings[index]; + if (!binding.buffer_enable) { + continue; + } + UNIMPLEMENTED_IF(binding.buffer_offset != 0); + + const GLuint handle = transform_feedback_buffers[index].handle; + const GPUVAddr gpu_addr = binding.Address(); + const std::size_t size = binding.buffer_size; + const auto [dest_buffer, offset] = buffer_cache.UploadMemory(gpu_addr, size, 4, true); + glCopyNamedBufferSubData(handle, *dest_buffer, 0, offset, static_cast<GLsizeiptr>(size)); + } +} + } // namespace OpenGL diff --git a/src/video_core/renderer_opengl/gl_rasterizer.h b/src/video_core/renderer_opengl/gl_rasterizer.h index e6424f5d2..2d3be2437 100644 --- a/src/video_core/renderer_opengl/gl_rasterizer.h +++ b/src/video_core/renderer_opengl/gl_rasterizer.h @@ -168,9 +168,6 @@ private: /// Syncs the scissor test state to match the guest state void SyncScissorTest(); - /// Syncs the transform feedback state to match the guest state - void SyncTransformFeedback(); - /// Syncs the point state to match the guest state void SyncPointState(); @@ -192,6 +189,12 @@ private: /// Syncs the framebuffer sRGB state to match the guest state void SyncFramebufferSRGB(); + /// Begin a transform feedback + void BeginTransformFeedback(GLenum primitive_mode); + + /// End a transform feedback + void EndTransformFeedback(); + /// Check for extension that are not strictly required but are needed for correct emulation void CheckExtensions(); @@ -229,6 +232,11 @@ private: BindBuffersRangePushBuffer bind_ubo_pushbuffer{GL_UNIFORM_BUFFER}; BindBuffersRangePushBuffer bind_ssbo_pushbuffer{GL_SHADER_STORAGE_BUFFER}; + std::array<OGLBuffer, Tegra::Engines::Maxwell3D::Regs::NumTransformFeedbackBuffers> + transform_feedback_buffers; + std::bitset<Tegra::Engines::Maxwell3D::Regs::NumTransformFeedbackBuffers> + enabled_transform_feedback_buffers; + /// Number of commands queued to the OpenGL driver. Reseted on flush. std::size_t num_queued_commands = 0; |