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yuzu/src/video_core/renderer_opengl/gl_rasterizer.cpp
ReinUsesLisp 606a62d4c7 gl_rasterizer: Port front face flip check from Vulkan 
While Vulkan was assuming we had no negative viewports, OpenGL code
was assuming we had them. Port the old code from Vulkan to OpenGL,
checking if the first viewport is negative before flipping faces.

This is not a complete implementation since we only check for the first
viewport to be negative. That said, unless a game is using Vulkan,
OpenGL and NVN games should be fine here, and we can always compare with
our Vulkan backend to see if there's a difference.
2020-05-26 16:33:50 -03:00

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// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <bitset>
#include <memory>
#include <string>
#include <string_view>
#include <tuple>
#include <utility>
#include <glad/glad.h>
#include "common/alignment.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/math_util.h"
#include "common/microprofile.h"
#include "common/scope_exit.h"
#include "core/core.h"
#include "core/hle/kernel/process.h"
#include "core/memory.h"
#include "core/settings.h"
#include "video_core/engines/kepler_compute.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/engines/shader_type.h"
#include "video_core/memory_manager.h"
#include "video_core/renderer_opengl/gl_query_cache.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_shader_cache.h"
#include "video_core/renderer_opengl/maxwell_to_gl.h"
#include "video_core/renderer_opengl/renderer_opengl.h"
namespace OpenGL {
using Maxwell = Tegra::Engines::Maxwell3D::Regs;
using Tegra::Engines::ShaderType;
using VideoCore::Surface::PixelFormat;
using VideoCore::Surface::SurfaceTarget;
using VideoCore::Surface::SurfaceType;
MICROPROFILE_DEFINE(OpenGL_VAO, "OpenGL", "Vertex Format Setup", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_VB, "OpenGL", "Vertex Buffer Setup", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Shader, "OpenGL", "Shader Setup", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_UBO, "OpenGL", "Const Buffer Setup", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Index, "OpenGL", "Index Buffer Setup", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Texture, "OpenGL", "Texture Setup", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Framebuffer, "OpenGL", "Framebuffer Setup", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Drawing, "OpenGL", "Drawing", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_Blits, "OpenGL", "Blits", MP_RGB(128, 128, 192));
MICROPROFILE_DEFINE(OpenGL_CacheManagement, "OpenGL", "Cache Mgmt", MP_RGB(100, 255, 100));
MICROPROFILE_DEFINE(OpenGL_PrimitiveAssembly, "OpenGL", "Prim Asmbl", MP_RGB(255, 100, 100));
namespace {
constexpr std::size_t NumSupportedVertexAttributes = 16;
template <typename Engine, typename Entry>
Tegra::Texture::FullTextureInfo GetTextureInfo(const Engine& engine, const Entry& entry,
ShaderType shader_type, std::size_t index = 0) {
if (entry.is_bindless) {
const auto tex_handle = engine.AccessConstBuffer32(shader_type, entry.buffer, entry.offset);
return engine.GetTextureInfo(tex_handle);
}
const auto& gpu_profile = engine.AccessGuestDriverProfile();
const u32 offset = entry.offset + static_cast<u32>(index * gpu_profile.GetTextureHandlerSize());
if constexpr (std::is_same_v<Engine, Tegra::Engines::Maxwell3D>) {
return engine.GetStageTexture(shader_type, offset);
} else {
return engine.GetTexture(offset);
}
}
std::size_t GetConstBufferSize(const Tegra::Engines::ConstBufferInfo& buffer,
const ConstBufferEntry& entry) {
if (!entry.IsIndirect()) {
return entry.GetSize();
}
if (buffer.size > Maxwell::MaxConstBufferSize) {
LOG_WARNING(Render_OpenGL, "Indirect constbuffer size {} exceeds maximum {}", buffer.size,
Maxwell::MaxConstBufferSize);
return Maxwell::MaxConstBufferSize;
}
return buffer.size;
}
void oglEnable(GLenum cap, bool state) {
(state ? glEnable : glDisable)(cap);
}
} // Anonymous namespace
RasterizerOpenGL::RasterizerOpenGL(Core::System& system, Core::Frontend::EmuWindow& emu_window,
const Device& device, ScreenInfo& info,
ProgramManager& program_manager, StateTracker& state_tracker)
: RasterizerAccelerated{system.Memory()}, device{device}, texture_cache{system, *this, device,
state_tracker},
shader_cache{*this, system, emu_window, device}, query_cache{system, *this},
buffer_cache{*this, system, device, STREAM_BUFFER_SIZE},
fence_manager{system, *this, texture_cache, buffer_cache, query_cache}, system{system},
screen_info{info}, program_manager{program_manager}, state_tracker{state_tracker} {
CheckExtensions();
if (device.UseAssemblyShaders()) {
glCreateBuffers(static_cast<GLsizei>(staging_cbufs.size()), staging_cbufs.data());
for (const GLuint cbuf : staging_cbufs) {
glNamedBufferStorage(cbuf, static_cast<GLsizeiptr>(Maxwell::MaxConstBufferSize),
nullptr, 0);
}
}
}
RasterizerOpenGL::~RasterizerOpenGL() {
if (device.UseAssemblyShaders()) {
glDeleteBuffers(static_cast<GLsizei>(staging_cbufs.size()), staging_cbufs.data());
}
}
void RasterizerOpenGL::CheckExtensions() {
if (!GLAD_GL_ARB_texture_filter_anisotropic && !GLAD_GL_EXT_texture_filter_anisotropic) {
LOG_WARNING(
Render_OpenGL,
"Anisotropic filter is not supported! This can cause graphical issues in some games.");
}
}
void RasterizerOpenGL::SetupVertexFormat() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::VertexFormats]) {
return;
}
flags[Dirty::VertexFormats] = false;
MICROPROFILE_SCOPE(OpenGL_VAO);
// Use the vertex array as-is, assumes that the data is formatted correctly for OpenGL. Enables
// the first 16 vertex attributes always, as we don't know which ones are actually used until
// shader time. Note, Tegra technically supports 32, but we're capping this to 16 for now to
// avoid OpenGL errors.
// TODO(Subv): Analyze the shader to identify which attributes are actually used and don't
// assume every shader uses them all.
for (std::size_t index = 0; index < NumSupportedVertexAttributes; ++index) {
if (!flags[Dirty::VertexFormat0 + index]) {
continue;
}
flags[Dirty::VertexFormat0 + index] = false;
const auto attrib = gpu.regs.vertex_attrib_format[index];
const auto gl_index = static_cast<GLuint>(index);
// Disable constant attributes.
if (attrib.IsConstant()) {
glDisableVertexAttribArray(gl_index);
continue;
}
glEnableVertexAttribArray(gl_index);
if (attrib.type == Maxwell::VertexAttribute::Type::SignedInt ||
attrib.type == Maxwell::VertexAttribute::Type::UnsignedInt) {
glVertexAttribIFormat(gl_index, attrib.ComponentCount(),
MaxwellToGL::VertexType(attrib), attrib.offset);
} else {
glVertexAttribFormat(gl_index, attrib.ComponentCount(), MaxwellToGL::VertexType(attrib),
attrib.IsNormalized() ? GL_TRUE : GL_FALSE, attrib.offset);
}
glVertexAttribBinding(gl_index, attrib.buffer);
}
}
void RasterizerOpenGL::SetupVertexBuffer() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::VertexBuffers]) {
return;
}
flags[Dirty::VertexBuffers] = false;
MICROPROFILE_SCOPE(OpenGL_VB);
// Upload all guest vertex arrays sequentially to our buffer
const auto& regs = gpu.regs;
for (std::size_t index = 0; index < Maxwell::NumVertexArrays; ++index) {
if (!flags[Dirty::VertexBuffer0 + index]) {
continue;
}
flags[Dirty::VertexBuffer0 + index] = false;
const auto& vertex_array = regs.vertex_array[index];
if (!vertex_array.IsEnabled()) {
continue;
}
const GPUVAddr start = vertex_array.StartAddress();
const GPUVAddr end = regs.vertex_array_limit[index].LimitAddress();
ASSERT(end >= start);
const u64 size = end - start;
if (size == 0) {
glBindVertexBuffer(static_cast<GLuint>(index), 0, 0, vertex_array.stride);
continue;
}
const auto [vertex_buffer, vertex_buffer_offset] = buffer_cache.UploadMemory(start, size);
glBindVertexBuffer(static_cast<GLuint>(index), vertex_buffer, vertex_buffer_offset,
vertex_array.stride);
}
}
void RasterizerOpenGL::SetupVertexInstances() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::VertexInstances]) {
return;
}
flags[Dirty::VertexInstances] = false;
const auto& regs = gpu.regs;
for (std::size_t index = 0; index < NumSupportedVertexAttributes; ++index) {
if (!flags[Dirty::VertexInstance0 + index]) {
continue;
}
flags[Dirty::VertexInstance0 + index] = false;
const auto gl_index = static_cast<GLuint>(index);
const bool instancing_enabled = regs.instanced_arrays.IsInstancingEnabled(gl_index);
const GLuint divisor = instancing_enabled ? regs.vertex_array[index].divisor : 0;
glVertexBindingDivisor(gl_index, divisor);
}
}
GLintptr RasterizerOpenGL::SetupIndexBuffer() {
MICROPROFILE_SCOPE(OpenGL_Index);
const auto& regs = system.GPU().Maxwell3D().regs;
const std::size_t size = CalculateIndexBufferSize();
const auto [buffer, offset] = buffer_cache.UploadMemory(regs.index_array.IndexStart(), size);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
return offset;
}
void RasterizerOpenGL::SetupShaders(GLenum primitive_mode) {
MICROPROFILE_SCOPE(OpenGL_Shader);
auto& gpu = system.GPU().Maxwell3D();
std::size_t num_ssbos = 0;
u32 clip_distances = 0;
for (std::size_t index = 0; index < Maxwell::MaxShaderProgram; ++index) {
const auto& shader_config = gpu.regs.shader_config[index];
const auto program{static_cast<Maxwell::ShaderProgram>(index)};
// Skip stages that are not enabled
if (!gpu.regs.IsShaderConfigEnabled(index)) {
switch (program) {
case Maxwell::ShaderProgram::Geometry:
program_manager.UseGeometryShader(0);
break;
case Maxwell::ShaderProgram::Fragment:
program_manager.UseFragmentShader(0);
break;
default:
break;
}
continue;
}
// Currently this stages are not supported in the OpenGL backend.
// Todo(Blinkhawk): Port tesselation shaders from Vulkan to OpenGL
if (program == Maxwell::ShaderProgram::TesselationControl) {
continue;
} else if (program == Maxwell::ShaderProgram::TesselationEval) {
continue;
}
Shader shader{shader_cache.GetStageProgram(program)};
if (device.UseAssemblyShaders()) {
// Check for ARB limitation. We only have 16 SSBOs per context state. To workaround this
// all stages share the same bindings.
const std::size_t num_stage_ssbos = shader->GetEntries().global_memory_entries.size();
ASSERT_MSG(num_stage_ssbos == 0 || num_ssbos == 0, "SSBOs on more than one stage");
num_ssbos += num_stage_ssbos;
}
// Stage indices are 0 - 5
const std::size_t stage = index == 0 ? 0 : index - 1;
SetupDrawConstBuffers(stage, shader);
SetupDrawGlobalMemory(stage, shader);
SetupDrawTextures(stage, shader);
SetupDrawImages(stage, shader);
const GLuint program_handle = shader->GetHandle();
switch (program) {
case Maxwell::ShaderProgram::VertexA:
case Maxwell::ShaderProgram::VertexB:
program_manager.UseVertexShader(program_handle);
break;
case Maxwell::ShaderProgram::Geometry:
program_manager.UseGeometryShader(program_handle);
break;
case Maxwell::ShaderProgram::Fragment:
program_manager.UseFragmentShader(program_handle);
break;
default:
UNIMPLEMENTED_MSG("Unimplemented shader index={}, enable={}, offset=0x{:08X}", index,
shader_config.enable.Value(), shader_config.offset);
}
// Workaround for Intel drivers.
// When a clip distance is enabled but not set in the shader it crops parts of the screen
// (sometimes it's half the screen, sometimes three quarters). To avoid this, enable the
// clip distances only when it's written by a shader stage.
clip_distances |= shader->GetEntries().clip_distances;
// When VertexA is enabled, we have dual vertex shaders
if (program == Maxwell::ShaderProgram::VertexA) {
// VertexB was combined with VertexA, so we skip the VertexB iteration
++index;
}
}
SyncClipEnabled(clip_distances);
gpu.dirty.flags[Dirty::Shaders] = false;
}
std::size_t RasterizerOpenGL::CalculateVertexArraysSize() const {
const auto& regs = system.GPU().Maxwell3D().regs;
std::size_t size = 0;
for (u32 index = 0; index < Maxwell::NumVertexArrays; ++index) {
if (!regs.vertex_array[index].IsEnabled())
continue;
const GPUVAddr start = regs.vertex_array[index].StartAddress();
const GPUVAddr end = regs.vertex_array_limit[index].LimitAddress();
size += end - start;
ASSERT(end >= start);
}
return size;
}
std::size_t RasterizerOpenGL::CalculateIndexBufferSize() const {
const auto& regs = system.GPU().Maxwell3D().regs;
return static_cast<std::size_t>(regs.index_array.count) *
static_cast<std::size_t>(regs.index_array.FormatSizeInBytes());
}
void RasterizerOpenGL::LoadDiskResources(const std::atomic_bool& stop_loading,
const VideoCore::DiskResourceLoadCallback& callback) {
shader_cache.LoadDiskCache(stop_loading, callback);
}
void RasterizerOpenGL::SetupDirtyFlags() {
state_tracker.Initialize();
}
void RasterizerOpenGL::ConfigureFramebuffers() {
MICROPROFILE_SCOPE(OpenGL_Framebuffer);
auto& gpu = system.GPU().Maxwell3D();
if (!gpu.dirty.flags[VideoCommon::Dirty::RenderTargets]) {
return;
}
gpu.dirty.flags[VideoCommon::Dirty::RenderTargets] = false;
texture_cache.GuardRenderTargets(true);
View depth_surface = texture_cache.GetDepthBufferSurface(true);
const auto& regs = gpu.regs;
UNIMPLEMENTED_IF(regs.rt_separate_frag_data == 0);
// Bind the framebuffer surfaces
FramebufferCacheKey key;
const auto colors_count = static_cast<std::size_t>(regs.rt_control.count);
for (std::size_t index = 0; index < colors_count; ++index) {
View color_surface{texture_cache.GetColorBufferSurface(index, true)};
if (!color_surface) {
continue;
}
// Assume that a surface will be written to if it is used as a framebuffer, even
// if the shader doesn't actually write to it.
texture_cache.MarkColorBufferInUse(index);
key.SetAttachment(index, regs.rt_control.GetMap(index));
key.colors[index] = std::move(color_surface);
}
if (depth_surface) {
// Assume that a surface will be written to if it is used as a framebuffer, even if
// the shader doesn't actually write to it.
texture_cache.MarkDepthBufferInUse();
key.zeta = std::move(depth_surface);
}
texture_cache.GuardRenderTargets(false);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer_cache.GetFramebuffer(key));
}
void RasterizerOpenGL::ConfigureClearFramebuffer(bool using_color, bool using_depth_stencil) {
auto& gpu = system.GPU().Maxwell3D();
const auto& regs = gpu.regs;
texture_cache.GuardRenderTargets(true);
View color_surface;
if (using_color) {
// Determine if we have to preserve the contents.
// First we have to make sure all clear masks are enabled.
bool preserve_contents = !regs.clear_buffers.R || !regs.clear_buffers.G ||
!regs.clear_buffers.B || !regs.clear_buffers.A;
const std::size_t index = regs.clear_buffers.RT;
if (regs.clear_flags.scissor) {
// Then we have to confirm scissor testing clears the whole image.
const auto& scissor = regs.scissor_test[0];
preserve_contents |= scissor.min_x > 0;
preserve_contents |= scissor.min_y > 0;
preserve_contents |= scissor.max_x < regs.rt[index].width;
preserve_contents |= scissor.max_y < regs.rt[index].height;
}
color_surface = texture_cache.GetColorBufferSurface(index, preserve_contents);
texture_cache.MarkColorBufferInUse(index);
}
View depth_surface;
if (using_depth_stencil) {
bool preserve_contents = false;
if (regs.clear_flags.scissor) {
// For depth stencil clears we only have to confirm scissor test covers the whole image.
const auto& scissor = regs.scissor_test[0];
preserve_contents |= scissor.min_x > 0;
preserve_contents |= scissor.min_y > 0;
preserve_contents |= scissor.max_x < regs.zeta_width;
preserve_contents |= scissor.max_y < regs.zeta_height;
}
depth_surface = texture_cache.GetDepthBufferSurface(preserve_contents);
texture_cache.MarkDepthBufferInUse();
}
texture_cache.GuardRenderTargets(false);
FramebufferCacheKey key;
key.colors[0] = std::move(color_surface);
key.zeta = std::move(depth_surface);
state_tracker.NotifyFramebuffer();
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer_cache.GetFramebuffer(key));
}
void RasterizerOpenGL::Clear() {
const auto& gpu = system.GPU().Maxwell3D();
if (!gpu.ShouldExecute()) {
return;
}
const auto& regs = gpu.regs;
bool use_color{};
bool use_depth{};
bool use_stencil{};
if (regs.clear_buffers.R || regs.clear_buffers.G || regs.clear_buffers.B ||
regs.clear_buffers.A) {
use_color = true;
state_tracker.NotifyColorMask0();
glColorMaski(0, regs.clear_buffers.R != 0, regs.clear_buffers.G != 0,
regs.clear_buffers.B != 0, regs.clear_buffers.A != 0);
// TODO(Rodrigo): Determine if clamping is used on clears
SyncFragmentColorClampState();
SyncFramebufferSRGB();
}
if (regs.clear_buffers.Z) {
ASSERT_MSG(regs.zeta_enable != 0, "Tried to clear Z but buffer is not enabled!");
use_depth = true;
state_tracker.NotifyDepthMask();
glDepthMask(GL_TRUE);
}
if (regs.clear_buffers.S) {
ASSERT_MSG(regs.zeta_enable, "Tried to clear stencil but buffer is not enabled!");
use_stencil = true;
}
if (!use_color && !use_depth && !use_stencil) {
// No color surface nor depth/stencil surface are enabled
return;
}
SyncRasterizeEnable();
SyncStencilTestState();
if (regs.clear_flags.scissor) {
SyncScissorTest();
} else {
state_tracker.NotifyScissor0();
glDisablei(GL_SCISSOR_TEST, 0);
}
UNIMPLEMENTED_IF(regs.clear_flags.viewport);
ConfigureClearFramebuffer(use_color, use_depth || use_stencil);
if (use_color) {
glClearBufferfv(GL_COLOR, 0, regs.clear_color);
}
if (use_depth && use_stencil) {
glClearBufferfi(GL_DEPTH_STENCIL, 0, regs.clear_depth, regs.clear_stencil);
} else if (use_depth) {
glClearBufferfv(GL_DEPTH, 0, &regs.clear_depth);
} else if (use_stencil) {
glClearBufferiv(GL_STENCIL, 0, &regs.clear_stencil);
}
++num_queued_commands;
}
void RasterizerOpenGL::Draw(bool is_indexed, bool is_instanced) {
MICROPROFILE_SCOPE(OpenGL_Drawing);
auto& gpu = system.GPU().Maxwell3D();
query_cache.UpdateCounters();
SyncViewport();
SyncRasterizeEnable();
SyncPolygonModes();
SyncColorMask();
SyncFragmentColorClampState();
SyncMultiSampleState();
SyncDepthTestState();
SyncDepthClamp();
SyncStencilTestState();
SyncBlendState();
SyncLogicOpState();
SyncCullMode();
SyncPrimitiveRestart();
SyncScissorTest();
SyncPointState();
SyncLineState();
SyncPolygonOffset();
SyncAlphaTest();
SyncFramebufferSRGB();
buffer_cache.Acquire();
current_cbuf = 0;
std::size_t buffer_size = CalculateVertexArraysSize();
// Add space for index buffer
if (is_indexed) {
buffer_size = Common::AlignUp(buffer_size, 4) + CalculateIndexBufferSize();
}
// Uniform space for the 5 shader stages
buffer_size =
Common::AlignUp<std::size_t>(buffer_size, 4) +
(sizeof(MaxwellUniformData) + device.GetUniformBufferAlignment()) * Maxwell::MaxShaderStage;
// Add space for at least 18 constant buffers
buffer_size += Maxwell::MaxConstBuffers *
(Maxwell::MaxConstBufferSize + device.GetUniformBufferAlignment());
// Prepare the vertex array.
buffer_cache.Map(buffer_size);
// Prepare vertex array format.
SetupVertexFormat();
// Upload vertex and index data.
SetupVertexBuffer();
SetupVertexInstances();
GLintptr index_buffer_offset = 0;
if (is_indexed) {
index_buffer_offset = SetupIndexBuffer();
}
// Setup emulation uniform buffer.
if (!device.UseAssemblyShaders()) {
MaxwellUniformData ubo;
ubo.SetFromRegs(gpu);
const auto [buffer, offset] =
buffer_cache.UploadHostMemory(&ubo, sizeof(ubo), device.GetUniformBufferAlignment());
glBindBufferRange(GL_UNIFORM_BUFFER, EmulationUniformBlockBinding, buffer, offset,
static_cast<GLsizeiptr>(sizeof(ubo)));
}
// Setup shaders and their used resources.
texture_cache.GuardSamplers(true);
const GLenum primitive_mode = MaxwellToGL::PrimitiveTopology(gpu.regs.draw.topology);
SetupShaders(primitive_mode);
texture_cache.GuardSamplers(false);
ConfigureFramebuffers();
// Signal the buffer cache that we are not going to upload more things.
buffer_cache.Unmap();
program_manager.BindGraphicsPipeline();
if (texture_cache.TextureBarrier()) {
glTextureBarrier();
}
BeginTransformFeedback(primitive_mode);
const GLuint base_instance = static_cast<GLuint>(gpu.regs.vb_base_instance);
const GLsizei num_instances =
static_cast<GLsizei>(is_instanced ? gpu.mme_draw.instance_count : 1);
if (is_indexed) {
const GLint base_vertex = static_cast<GLint>(gpu.regs.vb_element_base);
const GLsizei num_vertices = static_cast<GLsizei>(gpu.regs.index_array.count);
const GLvoid* offset = reinterpret_cast<const GLvoid*>(index_buffer_offset);
const GLenum format = MaxwellToGL::IndexFormat(gpu.regs.index_array.format);
if (num_instances == 1 && base_instance == 0 && base_vertex == 0) {
glDrawElements(primitive_mode, num_vertices, format, offset);
} else if (num_instances == 1 && base_instance == 0) {
glDrawElementsBaseVertex(primitive_mode, num_vertices, format, offset, base_vertex);
} else if (base_vertex == 0 && base_instance == 0) {
glDrawElementsInstanced(primitive_mode, num_vertices, format, offset, num_instances);
} else if (base_vertex == 0) {
glDrawElementsInstancedBaseInstance(primitive_mode, num_vertices, format, offset,
num_instances, base_instance);
} else if (base_instance == 0) {
glDrawElementsInstancedBaseVertex(primitive_mode, num_vertices, format, offset,
num_instances, base_vertex);
} else {
glDrawElementsInstancedBaseVertexBaseInstance(primitive_mode, num_vertices, format,
offset, num_instances, base_vertex,
base_instance);
}
} else {
const GLint base_vertex = static_cast<GLint>(gpu.regs.vertex_buffer.first);
const GLsizei num_vertices = static_cast<GLsizei>(gpu.regs.vertex_buffer.count);
if (num_instances == 1 && base_instance == 0) {
glDrawArrays(primitive_mode, base_vertex, num_vertices);
} else if (base_instance == 0) {
glDrawArraysInstanced(primitive_mode, base_vertex, num_vertices, num_instances);
} else {
glDrawArraysInstancedBaseInstance(primitive_mode, base_vertex, num_vertices,
num_instances, base_instance);
}
}
EndTransformFeedback();
++num_queued_commands;
system.GPU().TickWork();
}
void RasterizerOpenGL::DispatchCompute(GPUVAddr code_addr) {
if (device.HasBrokenCompute()) {
return;
}
buffer_cache.Acquire();
current_cbuf = 0;
auto kernel = shader_cache.GetComputeKernel(code_addr);
SetupComputeTextures(kernel);
SetupComputeImages(kernel);
const std::size_t buffer_size =
Tegra::Engines::KeplerCompute::NumConstBuffers *
(Maxwell::MaxConstBufferSize + device.GetUniformBufferAlignment());
buffer_cache.Map(buffer_size);
SetupComputeConstBuffers(kernel);
SetupComputeGlobalMemory(kernel);
buffer_cache.Unmap();
const auto& launch_desc = system.GPU().KeplerCompute().launch_description;
program_manager.BindCompute(kernel->GetHandle());
glDispatchCompute(launch_desc.grid_dim_x, launch_desc.grid_dim_y, launch_desc.grid_dim_z);
++num_queued_commands;
}
void RasterizerOpenGL::ResetCounter(VideoCore::QueryType type) {
query_cache.ResetCounter(type);
}
void RasterizerOpenGL::Query(GPUVAddr gpu_addr, VideoCore::QueryType type,
std::optional<u64> timestamp) {
query_cache.Query(gpu_addr, type, timestamp);
}
void RasterizerOpenGL::FlushAll() {}
void RasterizerOpenGL::FlushRegion(VAddr addr, u64 size) {
MICROPROFILE_SCOPE(OpenGL_CacheManagement);
if (addr == 0 || size == 0) {
return;
}
texture_cache.FlushRegion(addr, size);
buffer_cache.FlushRegion(addr, size);
query_cache.FlushRegion(addr, size);
}
bool RasterizerOpenGL::MustFlushRegion(VAddr addr, u64 size) {
if (!Settings::IsGPULevelHigh()) {
return buffer_cache.MustFlushRegion(addr, size);
}
return texture_cache.MustFlushRegion(addr, size) || buffer_cache.MustFlushRegion(addr, size);
}
void RasterizerOpenGL::InvalidateRegion(VAddr addr, u64 size) {
MICROPROFILE_SCOPE(OpenGL_CacheManagement);
if (addr == 0 || size == 0) {
return;
}
texture_cache.InvalidateRegion(addr, size);
shader_cache.InvalidateRegion(addr, size);
buffer_cache.InvalidateRegion(addr, size);
query_cache.InvalidateRegion(addr, size);
}
void RasterizerOpenGL::OnCPUWrite(VAddr addr, u64 size) {
MICROPROFILE_SCOPE(OpenGL_CacheManagement);
if (addr == 0 || size == 0) {
return;
}
texture_cache.OnCPUWrite(addr, size);
shader_cache.OnCPUWrite(addr, size);
buffer_cache.OnCPUWrite(addr, size);
}
void RasterizerOpenGL::SyncGuestHost() {
MICROPROFILE_SCOPE(OpenGL_CacheManagement);
texture_cache.SyncGuestHost();
buffer_cache.SyncGuestHost();
shader_cache.SyncGuestHost();
}
void RasterizerOpenGL::SignalSemaphore(GPUVAddr addr, u32 value) {
auto& gpu{system.GPU()};
if (!gpu.IsAsync()) {
auto& memory_manager{gpu.MemoryManager()};
memory_manager.Write<u32>(addr, value);
return;
}
fence_manager.SignalSemaphore(addr, value);
}
void RasterizerOpenGL::SignalSyncPoint(u32 value) {
auto& gpu{system.GPU()};
if (!gpu.IsAsync()) {
gpu.IncrementSyncPoint(value);
return;
}
fence_manager.SignalSyncPoint(value);
}
void RasterizerOpenGL::ReleaseFences() {
auto& gpu{system.GPU()};
if (!gpu.IsAsync()) {
return;
}
fence_manager.WaitPendingFences();
}
void RasterizerOpenGL::FlushAndInvalidateRegion(VAddr addr, u64 size) {
if (Settings::IsGPULevelExtreme()) {
FlushRegion(addr, size);
}
InvalidateRegion(addr, size);
}
void RasterizerOpenGL::WaitForIdle() {
// Place a barrier on everything that is not framebuffer related.
// This is related to another flag that is not currently implemented.
glMemoryBarrier(GL_VERTEX_ATTRIB_ARRAY_BARRIER_BIT | GL_ELEMENT_ARRAY_BARRIER_BIT |
GL_UNIFORM_BARRIER_BIT | GL_TEXTURE_FETCH_BARRIER_BIT |
GL_SHADER_IMAGE_ACCESS_BARRIER_BIT | GL_COMMAND_BARRIER_BIT |
GL_PIXEL_BUFFER_BARRIER_BIT | GL_TEXTURE_UPDATE_BARRIER_BIT |
GL_BUFFER_UPDATE_BARRIER_BIT | GL_TRANSFORM_FEEDBACK_BARRIER_BIT |
GL_SHADER_STORAGE_BARRIER_BIT | GL_QUERY_BUFFER_BARRIER_BIT);
}
void RasterizerOpenGL::FlushCommands() {
// Only flush when we have commands queued to OpenGL.
if (num_queued_commands == 0) {
return;
}
num_queued_commands = 0;
glFlush();
}
void RasterizerOpenGL::TickFrame() {
// Ticking a frame means that buffers will be swapped, calling glFlush implicitly.
num_queued_commands = 0;
buffer_cache.TickFrame();
}
bool RasterizerOpenGL::AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Regs::Surface& src,
const Tegra::Engines::Fermi2D::Regs::Surface& dst,
const Tegra::Engines::Fermi2D::Config& copy_config) {
MICROPROFILE_SCOPE(OpenGL_Blits);
texture_cache.DoFermiCopy(src, dst, copy_config);
return true;
}
bool RasterizerOpenGL::AccelerateDisplay(const Tegra::FramebufferConfig& config,
VAddr framebuffer_addr, u32 pixel_stride) {
if (!framebuffer_addr) {
return {};
}
MICROPROFILE_SCOPE(OpenGL_CacheManagement);
const auto surface{texture_cache.TryFindFramebufferSurface(framebuffer_addr)};
if (!surface) {
return {};
}
// Verify that the cached surface is the same size and format as the requested framebuffer
const auto& params{surface->GetSurfaceParams()};
const auto& pixel_format{
VideoCore::Surface::PixelFormatFromGPUPixelFormat(config.pixel_format)};
ASSERT_MSG(params.width == config.width, "Framebuffer width is different");
ASSERT_MSG(params.height == config.height, "Framebuffer height is different");
if (params.pixel_format != pixel_format) {
LOG_DEBUG(Render_OpenGL, "Framebuffer pixel_format is different");
}
screen_info.display_texture = surface->GetTexture();
screen_info.display_srgb = surface->GetSurfaceParams().srgb_conversion;
return true;
}
void RasterizerOpenGL::SetupDrawConstBuffers(std::size_t stage_index, const Shader& shader) {
static constexpr std::array PARAMETER_LUT = {
GL_VERTEX_PROGRAM_PARAMETER_BUFFER_NV, GL_TESS_CONTROL_PROGRAM_PARAMETER_BUFFER_NV,
GL_TESS_EVALUATION_PROGRAM_PARAMETER_BUFFER_NV, GL_GEOMETRY_PROGRAM_PARAMETER_BUFFER_NV,
GL_FRAGMENT_PROGRAM_PARAMETER_BUFFER_NV};
MICROPROFILE_SCOPE(OpenGL_UBO);
const auto& stages = system.GPU().Maxwell3D().state.shader_stages;
const auto& shader_stage = stages[stage_index];
u32 binding =
device.UseAssemblyShaders() ? 0 : device.GetBaseBindings(stage_index).uniform_buffer;
for (const auto& entry : shader->GetEntries().const_buffers) {
const auto& buffer = shader_stage.const_buffers[entry.GetIndex()];
SetupConstBuffer(PARAMETER_LUT[stage_index], binding++, buffer, entry);
}
}
void RasterizerOpenGL::SetupComputeConstBuffers(const Shader& kernel) {
MICROPROFILE_SCOPE(OpenGL_UBO);
const auto& launch_desc = system.GPU().KeplerCompute().launch_description;
u32 binding = 0;
for (const auto& entry : kernel->GetEntries().const_buffers) {
const auto& config = launch_desc.const_buffer_config[entry.GetIndex()];
const std::bitset<8> mask = launch_desc.const_buffer_enable_mask.Value();
Tegra::Engines::ConstBufferInfo buffer;
buffer.address = config.Address();
buffer.size = config.size;
buffer.enabled = mask[entry.GetIndex()];
SetupConstBuffer(GL_COMPUTE_PROGRAM_PARAMETER_BUFFER_NV, binding++, buffer, entry);
}
}
void RasterizerOpenGL::SetupConstBuffer(GLenum stage, u32 binding,
const Tegra::Engines::ConstBufferInfo& buffer,
const ConstBufferEntry& entry) {
if (!buffer.enabled) {
// Set values to zero to unbind buffers
if (device.UseAssemblyShaders()) {
glBindBufferRangeNV(stage, entry.GetIndex(), 0, 0, 0);
} else {
glBindBufferRange(GL_UNIFORM_BUFFER, binding,
buffer_cache.GetEmptyBuffer(sizeof(float)), 0, sizeof(float));
}
return;
}
// Align the actual size so it ends up being a multiple of vec4 to meet the OpenGL std140
// UBO alignment requirements.
const std::size_t size = Common::AlignUp(GetConstBufferSize(buffer, entry), sizeof(GLvec4));
const auto alignment = device.GetUniformBufferAlignment();
auto [cbuf, offset] = buffer_cache.UploadMemory(buffer.address, size, alignment, false,
device.HasFastBufferSubData());
if (!device.UseAssemblyShaders()) {
glBindBufferRange(GL_UNIFORM_BUFFER, binding, cbuf, offset, size);
return;
}
if (offset != 0) {
const GLuint staging_cbuf = staging_cbufs[current_cbuf++];
glCopyNamedBufferSubData(cbuf, staging_cbuf, offset, 0, size);
cbuf = staging_cbuf;
offset = 0;
}
glBindBufferRangeNV(stage, binding, cbuf, offset, size);
}
void RasterizerOpenGL::SetupDrawGlobalMemory(std::size_t stage_index, const Shader& shader) {
auto& gpu{system.GPU()};
auto& memory_manager{gpu.MemoryManager()};
const auto cbufs{gpu.Maxwell3D().state.shader_stages[stage_index]};
u32 binding =
device.UseAssemblyShaders() ? 0 : device.GetBaseBindings(stage_index).shader_storage_buffer;
for (const auto& entry : shader->GetEntries().global_memory_entries) {
const GPUVAddr addr{cbufs.const_buffers[entry.cbuf_index].address + entry.cbuf_offset};
const GPUVAddr gpu_addr{memory_manager.Read<u64>(addr)};
const u32 size{memory_manager.Read<u32>(addr + 8)};
SetupGlobalMemory(binding++, entry, gpu_addr, size);
}
}
void RasterizerOpenGL::SetupComputeGlobalMemory(const Shader& kernel) {
auto& gpu{system.GPU()};
auto& memory_manager{gpu.MemoryManager()};
const auto cbufs{gpu.KeplerCompute().launch_description.const_buffer_config};
u32 binding = 0;
for (const auto& entry : kernel->GetEntries().global_memory_entries) {
const auto addr{cbufs[entry.cbuf_index].Address() + entry.cbuf_offset};
const auto gpu_addr{memory_manager.Read<u64>(addr)};
const auto size{memory_manager.Read<u32>(addr + 8)};
SetupGlobalMemory(binding++, entry, gpu_addr, size);
}
}
void RasterizerOpenGL::SetupGlobalMemory(u32 binding, const GlobalMemoryEntry& entry,
GPUVAddr gpu_addr, std::size_t size) {
const auto alignment{device.GetShaderStorageBufferAlignment()};
const auto [ssbo, buffer_offset] =
buffer_cache.UploadMemory(gpu_addr, size, alignment, entry.is_written);
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, binding, ssbo, buffer_offset,
static_cast<GLsizeiptr>(size));
}
void RasterizerOpenGL::SetupDrawTextures(std::size_t stage_index, const Shader& shader) {
MICROPROFILE_SCOPE(OpenGL_Texture);
const auto& maxwell3d = system.GPU().Maxwell3D();
u32 binding = device.GetBaseBindings(stage_index).sampler;
for (const auto& entry : shader->GetEntries().samplers) {
const auto shader_type = static_cast<ShaderType>(stage_index);
for (std::size_t i = 0; i < entry.size; ++i) {
const auto texture = GetTextureInfo(maxwell3d, entry, shader_type, i);
SetupTexture(binding++, texture, entry);
}
}
}
void RasterizerOpenGL::SetupComputeTextures(const Shader& kernel) {
MICROPROFILE_SCOPE(OpenGL_Texture);
const auto& compute = system.GPU().KeplerCompute();
u32 binding = 0;
for (const auto& entry : kernel->GetEntries().samplers) {
for (std::size_t i = 0; i < entry.size; ++i) {
const auto texture = GetTextureInfo(compute, entry, ShaderType::Compute, i);
SetupTexture(binding++, texture, entry);
}
}
}
void RasterizerOpenGL::SetupTexture(u32 binding, const Tegra::Texture::FullTextureInfo& texture,
const SamplerEntry& entry) {
const auto view = texture_cache.GetTextureSurface(texture.tic, entry);
if (!view) {
// Can occur when texture addr is null or its memory is unmapped/invalid
glBindSampler(binding, 0);
glBindTextureUnit(binding, 0);
return;
}
glBindTextureUnit(binding, view->GetTexture());
if (view->GetSurfaceParams().IsBuffer()) {
return;
}
// Apply swizzle to textures that are not buffers.
view->ApplySwizzle(texture.tic.x_source, texture.tic.y_source, texture.tic.z_source,
texture.tic.w_source);
glBindSampler(binding, sampler_cache.GetSampler(texture.tsc));
}
void RasterizerOpenGL::SetupDrawImages(std::size_t stage_index, const Shader& shader) {
const auto& maxwell3d = system.GPU().Maxwell3D();
u32 binding = device.GetBaseBindings(stage_index).image;
for (const auto& entry : shader->GetEntries().images) {
const auto shader_type = static_cast<Tegra::Engines::ShaderType>(stage_index);
const auto tic = GetTextureInfo(maxwell3d, entry, shader_type).tic;
SetupImage(binding++, tic, entry);
}
}
void RasterizerOpenGL::SetupComputeImages(const Shader& shader) {
const auto& compute = system.GPU().KeplerCompute();
u32 binding = 0;
for (const auto& entry : shader->GetEntries().images) {
const auto tic = GetTextureInfo(compute, entry, Tegra::Engines::ShaderType::Compute).tic;
SetupImage(binding++, tic, entry);
}
}
void RasterizerOpenGL::SetupImage(u32 binding, const Tegra::Texture::TICEntry& tic,
const ImageEntry& entry) {
const auto view = texture_cache.GetImageSurface(tic, entry);
if (!view) {
glBindImageTexture(binding, 0, 0, GL_FALSE, 0, GL_READ_ONLY, GL_R8);
return;
}
if (!tic.IsBuffer()) {
view->ApplySwizzle(tic.x_source, tic.y_source, tic.z_source, tic.w_source);
}
if (entry.is_written) {
view->MarkAsModified(texture_cache.Tick());
}
glBindImageTexture(binding, view->GetTexture(), 0, GL_TRUE, 0, GL_READ_WRITE,
view->GetFormat());
}
void RasterizerOpenGL::SyncViewport() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
const auto& regs = gpu.regs;
const bool dirty_viewport = flags[Dirty::Viewports];
const bool dirty_clip_control = flags[Dirty::ClipControl];
if (dirty_clip_control || flags[Dirty::FrontFace]) {
flags[Dirty::FrontFace] = false;
GLenum mode = MaxwellToGL::FrontFace(regs.front_face);
if (regs.screen_y_control.triangle_rast_flip != 0 &&
regs.viewport_transform[0].scale_y < 0.0f) {
switch (mode) {
case GL_CW:
mode = GL_CCW;
break;
case GL_CCW:
mode = GL_CW;
break;
}
}
glFrontFace(mode);
}
if (dirty_viewport || flags[Dirty::ClipControl]) {
flags[Dirty::ClipControl] = false;
bool flip_y = false;
if (regs.viewport_transform[0].scale_y < 0.0) {
flip_y = !flip_y;
}
if (regs.screen_y_control.y_negate != 0) {
flip_y = !flip_y;
}
glClipControl(flip_y ? GL_UPPER_LEFT : GL_LOWER_LEFT,
regs.depth_mode == Maxwell::DepthMode::ZeroToOne ? GL_ZERO_TO_ONE
: GL_NEGATIVE_ONE_TO_ONE);
}
if (dirty_viewport) {
flags[Dirty::Viewports] = false;
const bool force = flags[Dirty::ViewportTransform];
flags[Dirty::ViewportTransform] = false;
for (std::size_t i = 0; i < Maxwell::NumViewports; ++i) {
if (!force && !flags[Dirty::Viewport0 + i]) {
continue;
}
flags[Dirty::Viewport0 + i] = false;
const auto& src = regs.viewport_transform[i];
const Common::Rectangle<f32> rect{src.GetRect()};
glViewportIndexedf(static_cast<GLuint>(i), rect.left, rect.bottom, rect.GetWidth(),
rect.GetHeight());
const GLdouble reduce_z = regs.depth_mode == Maxwell::DepthMode::MinusOneToOne;
const GLdouble near_depth = src.translate_z - src.scale_z * reduce_z;
const GLdouble far_depth = src.translate_z + src.scale_z;
glDepthRangeIndexed(static_cast<GLuint>(i), near_depth, far_depth);
if (!GLAD_GL_NV_viewport_swizzle) {
continue;
}
glViewportSwizzleNV(static_cast<GLuint>(i), MaxwellToGL::ViewportSwizzle(src.swizzle.x),
MaxwellToGL::ViewportSwizzle(src.swizzle.y),
MaxwellToGL::ViewportSwizzle(src.swizzle.z),
MaxwellToGL::ViewportSwizzle(src.swizzle.w));
}
}
}
void RasterizerOpenGL::SyncDepthClamp() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::DepthClampEnabled]) {
return;
}
flags[Dirty::DepthClampEnabled] = false;
oglEnable(GL_DEPTH_CLAMP, gpu.regs.view_volume_clip_control.depth_clamp_disabled == 0);
}
void RasterizerOpenGL::SyncClipEnabled(u32 clip_mask) {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::ClipDistances] && !flags[Dirty::Shaders]) {
return;
}
flags[Dirty::ClipDistances] = false;
clip_mask &= gpu.regs.clip_distance_enabled;
if (clip_mask == last_clip_distance_mask) {
return;
}
last_clip_distance_mask = clip_mask;
for (std::size_t i = 0; i < Maxwell::Regs::NumClipDistances; ++i) {
oglEnable(static_cast<GLenum>(GL_CLIP_DISTANCE0 + i), (clip_mask >> i) & 1);
}
}
void RasterizerOpenGL::SyncClipCoef() {
UNIMPLEMENTED();
}
void RasterizerOpenGL::SyncCullMode() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
const auto& regs = gpu.regs;
if (flags[Dirty::CullTest]) {
flags[Dirty::CullTest] = false;
if (regs.cull_test_enabled) {
glEnable(GL_CULL_FACE);
glCullFace(MaxwellToGL::CullFace(regs.cull_face));
} else {
glDisable(GL_CULL_FACE);
}
}
}
void RasterizerOpenGL::SyncPrimitiveRestart() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::PrimitiveRestart]) {
return;
}
flags[Dirty::PrimitiveRestart] = false;
if (gpu.regs.primitive_restart.enabled) {
glEnable(GL_PRIMITIVE_RESTART);
glPrimitiveRestartIndex(gpu.regs.primitive_restart.index);
} else {
glDisable(GL_PRIMITIVE_RESTART);
}
}
void RasterizerOpenGL::SyncDepthTestState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
const auto& regs = gpu.regs;
if (flags[Dirty::DepthMask]) {
flags[Dirty::DepthMask] = false;
glDepthMask(regs.depth_write_enabled ? GL_TRUE : GL_FALSE);
}
if (flags[Dirty::DepthTest]) {
flags[Dirty::DepthTest] = false;
if (regs.depth_test_enable) {
glEnable(GL_DEPTH_TEST);
glDepthFunc(MaxwellToGL::ComparisonOp(regs.depth_test_func));
} else {
glDisable(GL_DEPTH_TEST);
}
}
}
void RasterizerOpenGL::SyncStencilTestState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::StencilTest]) {
return;
}
flags[Dirty::StencilTest] = false;
const auto& regs = gpu.regs;
oglEnable(GL_STENCIL_TEST, regs.stencil_enable);
glStencilFuncSeparate(GL_FRONT, MaxwellToGL::ComparisonOp(regs.stencil_front_func_func),
regs.stencil_front_func_ref, regs.stencil_front_func_mask);
glStencilOpSeparate(GL_FRONT, MaxwellToGL::StencilOp(regs.stencil_front_op_fail),
MaxwellToGL::StencilOp(regs.stencil_front_op_zfail),
MaxwellToGL::StencilOp(regs.stencil_front_op_zpass));
glStencilMaskSeparate(GL_FRONT, regs.stencil_front_mask);
if (regs.stencil_two_side_enable) {
glStencilFuncSeparate(GL_BACK, MaxwellToGL::ComparisonOp(regs.stencil_back_func_func),
regs.stencil_back_func_ref, regs.stencil_back_func_mask);
glStencilOpSeparate(GL_BACK, MaxwellToGL::StencilOp(regs.stencil_back_op_fail),
MaxwellToGL::StencilOp(regs.stencil_back_op_zfail),
MaxwellToGL::StencilOp(regs.stencil_back_op_zpass));
glStencilMaskSeparate(GL_BACK, regs.stencil_back_mask);
} else {
glStencilFuncSeparate(GL_BACK, GL_ALWAYS, 0, 0xFFFFFFFF);
glStencilOpSeparate(GL_BACK, GL_KEEP, GL_KEEP, GL_KEEP);
glStencilMaskSeparate(GL_BACK, 0xFFFFFFFF);
}
}
void RasterizerOpenGL::SyncRasterizeEnable() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::RasterizeEnable]) {
return;
}
flags[Dirty::RasterizeEnable] = false;
oglEnable(GL_RASTERIZER_DISCARD, gpu.regs.rasterize_enable == 0);
}
void RasterizerOpenGL::SyncPolygonModes() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::PolygonModes]) {
return;
}
flags[Dirty::PolygonModes] = false;
if (gpu.regs.fill_rectangle) {
if (!GLAD_GL_NV_fill_rectangle) {
LOG_ERROR(Render_OpenGL, "GL_NV_fill_rectangle used and not supported");
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
return;
}
flags[Dirty::PolygonModeFront] = true;
flags[Dirty::PolygonModeBack] = true;
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL_RECTANGLE_NV);
return;
}
if (gpu.regs.polygon_mode_front == gpu.regs.polygon_mode_back) {
flags[Dirty::PolygonModeFront] = false;
flags[Dirty::PolygonModeBack] = false;
glPolygonMode(GL_FRONT_AND_BACK, MaxwellToGL::PolygonMode(gpu.regs.polygon_mode_front));
return;
}
if (flags[Dirty::PolygonModeFront]) {
flags[Dirty::PolygonModeFront] = false;
glPolygonMode(GL_FRONT, MaxwellToGL::PolygonMode(gpu.regs.polygon_mode_front));
}
if (flags[Dirty::PolygonModeBack]) {
flags[Dirty::PolygonModeBack] = false;
glPolygonMode(GL_BACK, MaxwellToGL::PolygonMode(gpu.regs.polygon_mode_back));
}
}
void RasterizerOpenGL::SyncColorMask() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::ColorMasks]) {
return;
}
flags[Dirty::ColorMasks] = false;
const bool force = flags[Dirty::ColorMaskCommon];
flags[Dirty::ColorMaskCommon] = false;
const auto& regs = gpu.regs;
if (regs.color_mask_common) {
if (!force && !flags[Dirty::ColorMask0]) {
return;
}
flags[Dirty::ColorMask0] = false;
auto& mask = regs.color_mask[0];
glColorMask(mask.R != 0, mask.B != 0, mask.G != 0, mask.A != 0);
return;
}
// Path without color_mask_common set
for (std::size_t i = 0; i < Maxwell::NumRenderTargets; ++i) {
if (!force && !flags[Dirty::ColorMask0 + i]) {
continue;
}
flags[Dirty::ColorMask0 + i] = false;
const auto& mask = regs.color_mask[i];
glColorMaski(static_cast<GLuint>(i), mask.R != 0, mask.G != 0, mask.B != 0, mask.A != 0);
}
}
void RasterizerOpenGL::SyncMultiSampleState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::MultisampleControl]) {
return;
}
flags[Dirty::MultisampleControl] = false;
const auto& regs = system.GPU().Maxwell3D().regs;
oglEnable(GL_SAMPLE_ALPHA_TO_COVERAGE, regs.multisample_control.alpha_to_coverage);
oglEnable(GL_SAMPLE_ALPHA_TO_ONE, regs.multisample_control.alpha_to_one);
}
void RasterizerOpenGL::SyncFragmentColorClampState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::FragmentClampColor]) {
return;
}
flags[Dirty::FragmentClampColor] = false;
glClampColor(GL_CLAMP_FRAGMENT_COLOR, gpu.regs.frag_color_clamp ? GL_TRUE : GL_FALSE);
}
void RasterizerOpenGL::SyncBlendState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
const auto& regs = gpu.regs;
if (flags[Dirty::BlendColor]) {
flags[Dirty::BlendColor] = false;
glBlendColor(regs.blend_color.r, regs.blend_color.g, regs.blend_color.b,
regs.blend_color.a);
}
// TODO(Rodrigo): Revisit blending, there are several registers we are not reading
if (!flags[Dirty::BlendStates]) {
return;
}
flags[Dirty::BlendStates] = false;
if (!regs.independent_blend_enable) {
if (!regs.blend.enable[0]) {
glDisable(GL_BLEND);
return;
}
glEnable(GL_BLEND);
glBlendFuncSeparate(MaxwellToGL::BlendFunc(regs.blend.factor_source_rgb),
MaxwellToGL::BlendFunc(regs.blend.factor_dest_rgb),
MaxwellToGL::BlendFunc(regs.blend.factor_source_a),
MaxwellToGL::BlendFunc(regs.blend.factor_dest_a));
glBlendEquationSeparate(MaxwellToGL::BlendEquation(regs.blend.equation_rgb),
MaxwellToGL::BlendEquation(regs.blend.equation_a));
return;
}
const bool force = flags[Dirty::BlendIndependentEnabled];
flags[Dirty::BlendIndependentEnabled] = false;
for (std::size_t i = 0; i < Maxwell::NumRenderTargets; ++i) {
if (!force && !flags[Dirty::BlendState0 + i]) {
continue;
}
flags[Dirty::BlendState0 + i] = false;
if (!regs.blend.enable[i]) {
glDisablei(GL_BLEND, static_cast<GLuint>(i));
continue;
}
glEnablei(GL_BLEND, static_cast<GLuint>(i));
const auto& src = regs.independent_blend[i];
glBlendFuncSeparatei(static_cast<GLuint>(i), MaxwellToGL::BlendFunc(src.factor_source_rgb),
MaxwellToGL::BlendFunc(src.factor_dest_rgb),
MaxwellToGL::BlendFunc(src.factor_source_a),
MaxwellToGL::BlendFunc(src.factor_dest_a));
glBlendEquationSeparatei(static_cast<GLuint>(i),
MaxwellToGL::BlendEquation(src.equation_rgb),
MaxwellToGL::BlendEquation(src.equation_a));
}
}
void RasterizerOpenGL::SyncLogicOpState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::LogicOp]) {
return;
}
flags[Dirty::LogicOp] = false;
const auto& regs = gpu.regs;
if (regs.logic_op.enable) {
glEnable(GL_COLOR_LOGIC_OP);
glLogicOp(MaxwellToGL::LogicOp(regs.logic_op.operation));
} else {
glDisable(GL_COLOR_LOGIC_OP);
}
}
void RasterizerOpenGL::SyncScissorTest() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::Scissors]) {
return;
}
flags[Dirty::Scissors] = false;
const auto& regs = gpu.regs;
for (std::size_t index = 0; index < Maxwell::NumViewports; ++index) {
if (!flags[Dirty::Scissor0 + index]) {
continue;
}
flags[Dirty::Scissor0 + index] = false;
const auto& src = regs.scissor_test[index];
if (src.enable) {
glEnablei(GL_SCISSOR_TEST, static_cast<GLuint>(index));
glScissorIndexed(static_cast<GLuint>(index), src.min_x, src.min_y,
src.max_x - src.min_x, src.max_y - src.min_y);
} else {
glDisablei(GL_SCISSOR_TEST, static_cast<GLuint>(index));
}
}
}
void RasterizerOpenGL::SyncPointState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::PointSize]) {
return;
}
flags[Dirty::PointSize] = false;
oglEnable(GL_POINT_SPRITE, gpu.regs.point_sprite_enable);
if (gpu.regs.vp_point_size.enable) {
// By definition of GL_POINT_SIZE, it only matters if GL_PROGRAM_POINT_SIZE is disabled.
glEnable(GL_PROGRAM_POINT_SIZE);
return;
}
// Limit the point size to 1 since nouveau sometimes sets a point size of 0 (and that's invalid
// in OpenGL).
glPointSize(std::max(1.0f, gpu.regs.point_size));
glDisable(GL_PROGRAM_POINT_SIZE);
}
void RasterizerOpenGL::SyncLineState() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::LineWidth]) {
return;
}
flags[Dirty::LineWidth] = false;
const auto& regs = gpu.regs;
oglEnable(GL_LINE_SMOOTH, regs.line_smooth_enable);
glLineWidth(regs.line_smooth_enable ? regs.line_width_smooth : regs.line_width_aliased);
}
void RasterizerOpenGL::SyncPolygonOffset() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::PolygonOffset]) {
return;
}
flags[Dirty::PolygonOffset] = false;
const auto& regs = gpu.regs;
oglEnable(GL_POLYGON_OFFSET_FILL, regs.polygon_offset_fill_enable);
oglEnable(GL_POLYGON_OFFSET_LINE, regs.polygon_offset_line_enable);
oglEnable(GL_POLYGON_OFFSET_POINT, regs.polygon_offset_point_enable);
if (regs.polygon_offset_fill_enable || regs.polygon_offset_line_enable ||
regs.polygon_offset_point_enable) {
// Hardware divides polygon offset units by two
glPolygonOffsetClamp(regs.polygon_offset_factor, regs.polygon_offset_units / 2.0f,
regs.polygon_offset_clamp);
}
}
void RasterizerOpenGL::SyncAlphaTest() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::AlphaTest]) {
return;
}
flags[Dirty::AlphaTest] = false;
const auto& regs = gpu.regs;
if (regs.alpha_test_enabled && regs.rt_control.count > 1) {
LOG_WARNING(Render_OpenGL, "Alpha testing with more than one render target is not tested");
}
if (regs.alpha_test_enabled) {
glEnable(GL_ALPHA_TEST);
glAlphaFunc(MaxwellToGL::ComparisonOp(regs.alpha_test_func), regs.alpha_test_ref);
} else {
glDisable(GL_ALPHA_TEST);
}
}
void RasterizerOpenGL::SyncFramebufferSRGB() {
auto& gpu = system.GPU().Maxwell3D();
auto& flags = gpu.dirty.flags;
if (!flags[Dirty::FramebufferSRGB]) {
return;
}
flags[Dirty::FramebufferSRGB] = false;
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
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