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Merge pull request #2514 from ReinUsesLisp/opengl-compat

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video_core: Drop OpenGL core in favor of OpenGL compatibility
This commit is contained in:
Zach Hilman 2019-06-07 17:23:25 -04:00 • committed by GitHub
commit de33ad25f5
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 45 additions and 252 deletions
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10
src/video_core/renderer_opengl/gl_buffer_cache.cpp
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@ -71,16 +71,6 @@ GLintptr OGLBufferCache::UploadHostMemory(const void* raw_pointer, std::size_t s
return uploaded_offset;
}
std::tuple<u8*, GLintptr> OGLBufferCache::ReserveMemory(std::size_t size, std::size_t alignment) {
AlignBuffer(alignment);
u8* const uploaded_ptr = buffer_ptr;
const GLintptr uploaded_offset = buffer_offset;
buffer_ptr += size;
buffer_offset += size;
return std::make_tuple(uploaded_ptr, uploaded_offset);
}
bool OGLBufferCache::Map(std::size_t max_size) {
bool invalidate;
std::tie(buffer_ptr, buffer_offset_base, invalidate) =

3
src/video_core/renderer_opengl/gl_buffer_cache.h
View file

@ -61,9 +61,6 @@ public:
/// Uploads from a host memory. Returns host's buffer offset where it's been allocated.
GLintptr UploadHostMemory(const void* raw_pointer, std::size_t size, std::size_t alignment = 4);
/// Reserves memory to be used by host's CPU. Returns mapped address and offset.
std::tuple<u8*, GLintptr> ReserveMemory(std::size_t size, std::size_t alignment = 4);
bool Map(std::size_t max_size);
void Unmap();

63
src/video_core/renderer_opengl/gl_primitive_assembler.cpp
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@ -1,63 +0,0 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include "common/assert.h"
#include "common/common_types.h"
#include "core/core.h"
#include "video_core/memory_manager.h"
#include "video_core/renderer_opengl/gl_buffer_cache.h"
#include "video_core/renderer_opengl/gl_primitive_assembler.h"
namespace OpenGL {
constexpr u32 TRIANGLES_PER_QUAD = 6;
constexpr std::array<u32, TRIANGLES_PER_QUAD> QUAD_MAP = {0, 1, 2, 0, 2, 3};
PrimitiveAssembler::PrimitiveAssembler(OGLBufferCache& buffer_cache) : buffer_cache(buffer_cache) {}
PrimitiveAssembler::~PrimitiveAssembler() = default;
std::size_t PrimitiveAssembler::CalculateQuadSize(u32 count) const {
ASSERT_MSG(count % 4 == 0, "Quad count is expected to be a multiple of 4");
return (count / 4) * TRIANGLES_PER_QUAD * sizeof(GLuint);
}
GLintptr PrimitiveAssembler::MakeQuadArray(u32 first, u32 count) {
const std::size_t size{CalculateQuadSize(count)};
auto [dst_pointer, index_offset] = buffer_cache.ReserveMemory(size);
for (u32 primitive = 0; primitive < count / 4; ++primitive) {
for (u32 i = 0; i < TRIANGLES_PER_QUAD; ++i) {
const u32 index = first + primitive * 4 + QUAD_MAP[i];
std::memcpy(dst_pointer, &index, sizeof(index));
dst_pointer += sizeof(index);
}
}
return index_offset;
}
GLintptr PrimitiveAssembler::MakeQuadIndexed(GPUVAddr gpu_addr, std::size_t index_size, u32 count) {
const std::size_t map_size{CalculateQuadSize(count)};
auto [dst_pointer, index_offset] = buffer_cache.ReserveMemory(map_size);
auto& memory_manager = Core::System::GetInstance().GPU().MemoryManager();
const u8* source{memory_manager.GetPointer(gpu_addr)};
for (u32 primitive = 0; primitive < count / 4; ++primitive) {
for (std::size_t i = 0; i < TRIANGLES_PER_QUAD; ++i) {
const u32 index = primitive * 4 + QUAD_MAP[i];
const u8* src_offset = source + (index * index_size);
std::memcpy(dst_pointer, src_offset, index_size);
dst_pointer += index_size;
}
}
return index_offset;
}
} // namespace OpenGL

31
src/video_core/renderer_opengl/gl_primitive_assembler.h
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@ -1,31 +0,0 @@
// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <glad/glad.h>
#include "common/common_types.h"
namespace OpenGL {
class OGLBufferCache;
class PrimitiveAssembler {
public:
explicit PrimitiveAssembler(OGLBufferCache& buffer_cache);
~PrimitiveAssembler();
/// Calculates the size required by MakeQuadArray and MakeQuadIndexed.
std::size_t CalculateQuadSize(u32 count) const;
GLintptr MakeQuadArray(u32 first, u32 count);
GLintptr MakeQuadIndexed(GPUVAddr gpu_addr, std::size_t index_size, u32 count);
private:
OGLBufferCache& buffer_cache;
};
} // namespace OpenGL

51
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -246,29 +246,6 @@ DrawParameters RasterizerOpenGL::SetupDraw() {
DrawParameters params{};
params.current_instance = gpu.state.current_instance;
if (regs.draw.topology == Maxwell::PrimitiveTopology::Quads) {
MICROPROFILE_SCOPE(OpenGL_PrimitiveAssembly);
params.use_indexed = true;
params.primitive_mode = GL_TRIANGLES;
if (is_indexed) {
params.index_format = MaxwellToGL::IndexFormat(regs.index_array.format);
params.count = (regs.index_array.count / 4) * 6;
params.index_buffer_offset = primitive_assembler.MakeQuadIndexed(
regs.index_array.IndexStart(), regs.index_array.FormatSizeInBytes(),
regs.index_array.count);
params.base_vertex = static_cast<GLint>(regs.vb_element_base);
} else {
// MakeQuadArray always generates u32 indexes
params.index_format = GL_UNSIGNED_INT;
params.count = (regs.vertex_buffer.count / 4) * 6;
params.index_buffer_offset = primitive_assembler.MakeQuadArray(
regs.vertex_buffer.first, regs.vertex_buffer.count);
}
return params;
}
params.use_indexed = is_indexed;
params.primitive_mode = MaxwellToGL::PrimitiveTopology(regs.draw.topology);
@ -686,30 +663,19 @@ void RasterizerOpenGL::DrawArrays() {
SyncCullMode();
SyncPrimitiveRestart();
SyncScissorTest(state);
// Alpha Testing is synced on shaders.
SyncTransformFeedback();
SyncPointState();
CheckAlphaTests();
SyncPolygonOffset();
// TODO(bunnei): Sync framebuffer_scale uniform here
// TODO(bunnei): Sync scissorbox uniform(s) here
SyncAlphaTest();
// Draw the vertex batch
const bool is_indexed = accelerate_draw == AccelDraw::Indexed;
std::size_t buffer_size = CalculateVertexArraysSize();
// Add space for index buffer (keeping in mind non-core primitives)
switch (regs.draw.topology) {
case Maxwell::PrimitiveTopology::Quads:
buffer_size = Common::AlignUp(buffer_size, 4) +
primitive_assembler.CalculateQuadSize(regs.vertex_buffer.count);
break;
default:
if (is_indexed) {
buffer_size = Common::AlignUp(buffer_size, 4) + CalculateIndexBufferSize();
}
break;
// Add space for index buffer
if (is_indexed) {
buffer_size = Common::AlignUp(buffer_size, 4) + CalculateIndexBufferSize();
}
// Uniform space for the 5 shader stages
@ -1152,10 +1118,17 @@ void RasterizerOpenGL::SyncPolygonOffset() {
state.polygon_offset.clamp = regs.polygon_offset_clamp;
}
void RasterizerOpenGL::CheckAlphaTests() {
void RasterizerOpenGL::SyncAlphaTest() {
const auto& regs = system.GPU().Maxwell3D().regs;
UNIMPLEMENTED_IF_MSG(regs.alpha_test_enabled != 0 && regs.rt_control.count > 1,
"Alpha Testing is enabled with more than one rendertarget");
state.alpha_test.enabled = regs.alpha_test_enabled;
if (!state.alpha_test.enabled) {
return;
}
state.alpha_test.func = MaxwellToGL::ComparisonOp(regs.alpha_test_func);
state.alpha_test.ref = regs.alpha_test_ref;
}
} // namespace OpenGL

6
src/video_core/renderer_opengl/gl_rasterizer.h
View file

@ -23,7 +23,6 @@
#include "video_core/renderer_opengl/gl_buffer_cache.h"
#include "video_core/renderer_opengl/gl_device.h"
#include "video_core/renderer_opengl/gl_global_cache.h"
#include "video_core/renderer_opengl/gl_primitive_assembler.h"
#include "video_core/renderer_opengl/gl_rasterizer_cache.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
#include "video_core/renderer_opengl/gl_sampler_cache.h"
@ -167,8 +166,8 @@ private:
/// Syncs the polygon offsets
void SyncPolygonOffset();
/// Check asserts for alpha testing.
void CheckAlphaTests();
/// Syncs the alpha test state to match the guest state
void SyncAlphaTest();
/// Check for extension that are not strictly required
/// but are needed for correct emulation
@ -197,7 +196,6 @@ private:
static constexpr std::size_t STREAM_BUFFER_SIZE = 128 * 1024 * 1024;
OGLBufferCache buffer_cache;
PrimitiveAssembler primitive_assembler{buffer_cache};
BindBuffersRangePushBuffer bind_ubo_pushbuffer{GL_UNIFORM_BUFFER};
BindBuffersRangePushBuffer bind_ssbo_pushbuffer{GL_SHADER_STORAGE_BUFFER};

20
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -1467,27 +1467,9 @@ private:
UNIMPLEMENTED_IF_MSG(header.ps.omap.sample_mask != 0, "Sample mask write is unimplemented");
code.AddLine("if (alpha_test[0] != 0) {{");
++code.scope;
// We start on the register containing the alpha value in the first RT.
u32 current_reg = 3;
for (u32 render_target = 0; render_target < Maxwell::NumRenderTargets; ++render_target) {
// TODO(Blinkhawk): verify the behavior of alpha testing on hardware when
// multiple render targets are used.
if (header.ps.IsColorComponentOutputEnabled(render_target, 0) ||
header.ps.IsColorComponentOutputEnabled(render_target, 1) ||
header.ps.IsColorComponentOutputEnabled(render_target, 2) ||
header.ps.IsColorComponentOutputEnabled(render_target, 3)) {
code.AddLine("if (!AlphaFunc({})) discard;", SafeGetRegister(current_reg));
current_reg += 4;
}
}
--code.scope;
code.AddLine("}}");
// Write the color outputs using the data in the shader registers, disabled
// rendertargets/components are skipped in the register assignment.
current_reg = 0;
u32 current_reg = 0;
for (u32 render_target = 0; render_target < Maxwell::NumRenderTargets; ++render_target) {
// TODO(Subv): Figure out how dual-source blending is configured in the Switch.
for (u32 component = 0; component < 4; ++component) {

27
src/video_core/renderer_opengl/gl_shader_gen.cpp
View file

@ -26,7 +26,6 @@ ProgramResult GenerateVertexShader(const Device& device, const ShaderSetup& setu
layout (std140, binding = EMULATION_UBO_BINDING) uniform vs_config {
vec4 viewport_flip;
uvec4 config_pack; // instance_id, flip_stage, y_direction, padding
uvec4 alpha_test;
};
)";
@ -78,7 +77,6 @@ ProgramResult GenerateGeometryShader(const Device& device, const ShaderSetup& se
layout (std140, binding = EMULATION_UBO_BINDING) uniform gs_config {
vec4 viewport_flip;
uvec4 config_pack; // instance_id, flip_stage, y_direction, padding
uvec4 alpha_test;
};
)";
@ -114,33 +112,8 @@ layout (location = 7) out vec4 FragColor7;
layout (std140, binding = EMULATION_UBO_BINDING) uniform fs_config {
vec4 viewport_flip;
uvec4 config_pack; // instance_id, flip_stage, y_direction, padding
uvec4 alpha_test;
};
bool AlphaFunc(in float value) {
float ref = uintBitsToFloat(alpha_test[2]);
switch (alpha_test[1]) {
case 1:
return false;
case 2:
return value < ref;
case 3:
return value == ref;
case 4:
return value <= ref;
case 5:
return value > ref;
case 6:
return value != ref;
case 7:
return value >= ref;
case 8:
return true;
default:
return false;
}
}
)";
const ShaderIR program_ir(setup.program.code, PROGRAM_OFFSET);
ProgramResult program =

11
src/video_core/renderer_opengl/gl_shader_manager.cpp
View file

@ -48,17 +48,6 @@ void MaxwellUniformData::SetFromRegs(const Maxwell3D& maxwell, std::size_t shade
viewport_flip[0] = regs.viewport_transform[0].scale_x < 0.0 ? -1.0f : 1.0f;
viewport_flip[1] = regs.viewport_transform[0].scale_y < 0.0 ? -1.0f : 1.0f;
auto func{static_cast<u32>(regs.alpha_test_func)};
// Normalize the gl variants of opCompare to be the same as the normal variants
const u32 op_gl_variant_base = static_cast<u32>(Maxwell3D::Regs::ComparisonOp::Never);
if (func >= op_gl_variant_base) {
func = func - op_gl_variant_base + 1U;
}
alpha_test.enabled = regs.alpha_test_enabled;
alpha_test.func = func;
alpha_test.ref = regs.alpha_test_ref;
instance_id = state.current_instance;
// Assign in which stage the position has to be flipped

8
src/video_core/renderer_opengl/gl_shader_manager.h
View file

@ -27,14 +27,8 @@ struct MaxwellUniformData {
GLuint flip_stage;
GLfloat y_direction;
};
struct alignas(16) {
GLuint enabled;
GLuint func;
GLfloat ref;
GLuint padding;
} alpha_test;
};
static_assert(sizeof(MaxwellUniformData) == 48, "MaxwellUniformData structure size is incorrect");
static_assert(sizeof(MaxwellUniformData) == 32, "MaxwellUniformData structure size is incorrect");
static_assert(sizeof(MaxwellUniformData) < 16384,
"MaxwellUniformData structure must be less than 16kb as per the OpenGL spec");

13
src/video_core/renderer_opengl/gl_state.cpp
View file

@ -156,6 +156,10 @@ OpenGLState::OpenGLState() {
polygon_offset.factor = 0.0f;
polygon_offset.units = 0.0f;
polygon_offset.clamp = 0.0f;
alpha_test.enabled = false;
alpha_test.func = GL_ALWAYS;
alpha_test.ref = 0.0f;
}
void OpenGLState::ApplyDefaultState() {
@ -461,6 +465,14 @@ void OpenGLState::ApplyPolygonOffset() const {
}
}
void OpenGLState::ApplyAlphaTest() const {
Enable(GL_ALPHA_TEST, cur_state.alpha_test.enabled, alpha_test.enabled);
if (UpdateTie(std::tie(cur_state.alpha_test.func, cur_state.alpha_test.ref),
std::tie(alpha_test.func, alpha_test.ref))) {
glAlphaFunc(alpha_test.func, alpha_test.ref);
}
}
void OpenGLState::ApplyTextures() const {
bool has_delta{};
std::size_t first{};
@ -533,6 +545,7 @@ void OpenGLState::Apply() const {
ApplyTextures();
ApplySamplers();
ApplyPolygonOffset();
ApplyAlphaTest();
}
void OpenGLState::EmulateViewportWithScissor() {

7
src/video_core/renderer_opengl/gl_state.h
View file

@ -172,6 +172,12 @@ public:
GLfloat clamp;
} polygon_offset;
struct {
bool enabled; // GL_ALPHA_TEST
GLenum func; // GL_ALPHA_TEST_FUNC
GLfloat ref; // GL_ALPHA_TEST_REF
} alpha_test;
std::array<bool, 8> clip_distance; // GL_CLIP_DISTANCE
OpenGLState();
@ -215,6 +221,7 @@ public:
void ApplySamplers() const;
void ApplyDepthClamp() const;
void ApplyPolygonOffset() const;
void ApplyAlphaTest() const;
/// Set the initial OpenGL state
static void ApplyDefaultState();

9
src/video_core/renderer_opengl/maxwell_to_gl.h
View file

@ -128,6 +128,8 @@ inline GLenum PrimitiveTopology(Maxwell::PrimitiveTopology topology) {
return GL_TRIANGLE_STRIP;
case Maxwell::PrimitiveTopology::TriangleFan:
return GL_TRIANGLE_FAN;
case Maxwell::PrimitiveTopology::Quads:
return GL_QUADS;
default:
LOG_CRITICAL(Render_OpenGL, "Unimplemented topology={}", static_cast<u32>(topology));
UNREACHABLE();
@ -173,11 +175,8 @@ inline GLenum WrapMode(Tegra::Texture::WrapMode wrap_mode) {
return GL_CLAMP_TO_EDGE;
case Tegra::Texture::WrapMode::Border:
return GL_CLAMP_TO_BORDER;
case Tegra::Texture::WrapMode::ClampOGL:
// TODO(Subv): GL_CLAMP was removed as of OpenGL 3.1, to implement GL_CLAMP, we can use
// GL_CLAMP_TO_BORDER to get the border color of the texture, and then sample the edge to
// manually mix them. However the shader part of this is not yet implemented.
return GL_CLAMP_TO_BORDER;
case Tegra::Texture::WrapMode::Clamp:
return GL_CLAMP;
case Tegra::Texture::WrapMode::MirrorOnceClampToEdge:
return GL_MIRROR_CLAMP_TO_EDGE;
case Tegra::Texture::WrapMode::MirrorOnceBorder: