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Refactor: Extract VertexLoader from command_processor.cpp. 

Preparation for a similar concept to Dolphin or PPSSPP. These can be JIT-ed and cached.
This commit is contained in:
Henrik Rydgard 2016-04-28 19:01:47 +02:00
parent 0cf15f64ef
commit 47ff008817
5 changed files with 185 additions and 125 deletions
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2
src/video_core/CMakeLists.txt
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@ -16,6 +16,7 @@ set(SRCS
shader/shader_interpreter.cpp
swrasterizer.cpp
utils.cpp
vertex_loader.cpp
video_core.cpp
)
@ -43,6 +44,7 @@ set(HEADERS
shader/shader_interpreter.h
swrasterizer.h
utils.h
vertex_loader.h
video_core.h
)

134
src/video_core/command_processor.cpp
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@ -22,6 +22,7 @@
#include "video_core/video_core.h"
#include "video_core/debug_utils/debug_utils.h"
#include "video_core/shader/shader_interpreter.h"
#include "video_core/vertex_loader.h"
namespace Pica {
@ -192,62 +193,19 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
#if PICA_LOG_TEV
DebugUtils::DumpTevStageConfig(regs.GetTevStages());
#endif
if (g_debug_context)
g_debug_context->OnEvent(DebugContext::Event::IncomingPrimitiveBatch, nullptr);
const auto& attribute_config = regs.vertex_attributes;
const u32 base_address = attribute_config.GetPhysicalBaseAddress();
int num_total_attributes = attribute_config.GetNumTotalAttributes();
// Information about internal vertex attributes
u32 vertex_attribute_sources[16];
boost::fill(vertex_attribute_sources, 0xdeadbeef);
u32 vertex_attribute_strides[16] = {};
Regs::VertexAttributeFormat vertex_attribute_formats[16] = {};
u32 vertex_attribute_elements[16] = {};
u32 vertex_attribute_element_size[16] = {};
bool vertex_attribute_default[16] = {};
// Setup attribute data from loaders
for (int loader = 0; loader < 12; ++loader) {
const auto& loader_config = attribute_config.attribute_loaders[loader];
u32 offset = 0;
// TODO: What happens if a loader overwrites a previous one's data?
for (unsigned component = 0; component < loader_config.component_count; ++component) {
if (component >= 12) {
LOG_ERROR(HW_GPU, "Overflow in the vertex attribute loader %u trying to load component %u", loader, component);
continue;
}
u32 attribute_index = loader_config.GetComponent(component);
if (attribute_index < 12) {
int element_size = attribute_config.GetElementSizeInBytes(attribute_index);
offset = Common::AlignUp(offset, element_size);
vertex_attribute_sources[attribute_index] = base_address + loader_config.data_offset + offset;
vertex_attribute_strides[attribute_index] = static_cast<u32>(loader_config.byte_count);
vertex_attribute_formats[attribute_index] = attribute_config.GetFormat(attribute_index);
vertex_attribute_elements[attribute_index] = attribute_config.GetNumElements(attribute_index);
vertex_attribute_element_size[attribute_index] = element_size;
vertex_attribute_default[attribute_index] = attribute_config.IsDefaultAttribute(attribute_index);
offset += attribute_config.GetStride(attribute_index);
} else if (attribute_index < 16) {
// Attribute ids 12, 13, 14 and 15 signify 4, 8, 12 and 16-byte paddings, respectively
offset = Common::AlignUp(offset, 4);
offset += (attribute_index - 11) * 4;
} else {
UNREACHABLE(); // This is truly unreachable due to the number of bits for each component
}
}
}
// Processes information about internal vertex attributes to figure out how a vertex is loaded.
// Later, these can be compiled and cached.
VertexLoader loader;
loader.Setup(regs);
// Load vertices
bool is_indexed = (id == PICA_REG_INDEX(trigger_draw_indexed));
const auto& index_info = regs.index_array;
const u8* index_address_8 = Memory::GetPhysicalPointer(base_address + index_info.offset);
const u8* index_address_8 = Memory::GetPhysicalPointer(loader.GetPhysicalBaseAddress() + index_info.offset);
const u16* index_address_16 = reinterpret_cast<const u16*>(index_address_8);
bool index_u16 = index_info.format != 0;
@ -265,32 +223,7 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
}
}
class {
/// Combine overlapping and close ranges
void SimplifyRanges() {
for (auto it = ranges.begin(); it != ranges.end(); ++it) {
// NOTE: We add 32 to the range end address to make sure "close" ranges are combined, too
auto it2 = std::next(it);
while (it2 != ranges.end() && it->first + it->second + 32 >= it2->first) {
it->second = std::max(it->second, it2->first + it2->second - it->first);
it2 = ranges.erase(it2);
}
}
}
public:
/// Record a particular memory access in the list
void AddAccess(u32 paddr, u32 size) {
// Create new range or extend existing one
ranges[paddr] = std::max(ranges[paddr], size);
// Simplify ranges...
SimplifyRanges();
}
/// Map of accessed ranges (mapping start address to range size)
std::map<u32, u32> ranges;
} memory_accesses;
MemoryAccesses memory_accesses;
// Simple circular-replacement vertex cache
// The size has been tuned for optimal balance between hit-rate and the cost of lookup
@ -319,7 +252,7 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
if (is_indexed) {
if (g_debug_context && Pica::g_debug_context->recorder) {
int size = index_u16 ? 2 : 1;
memory_accesses.AddAccess(base_address + index_info.offset + size * index, size);
memory_accesses.AddAccess(loader.GetPhysicalBaseAddress() + index_info.offset + size * index, size);
}
for (unsigned int i = 0; i < VERTEX_CACHE_SIZE; ++i) {
@ -334,60 +267,13 @@ static void WritePicaReg(u32 id, u32 value, u32 mask) {
if (!vertex_cache_hit) {
// Initialize data for the current vertex
Shader::InputVertex input;
for (int i = 0; i < num_total_attributes; ++i) {
if (vertex_attribute_elements[i] != 0) {
// Default attribute values set if array elements have < 4 components. This
// is *not* carried over from the default attribute settings even if they're
// enabled for this attribute.
static const float24 zero = float24::FromFloat32(0.0f);
static const float24 one = float24::FromFloat32(1.0f);
input.attr[i] = Math::Vec4<float24>(zero, zero, zero, one);
// Load per-vertex data from the loader arrays
for (unsigned int comp = 0; comp < vertex_attribute_elements[i]; ++comp) {
u32 source_addr = vertex_attribute_sources[i] + vertex_attribute_strides[i] * vertex + comp * vertex_attribute_element_size[i];
const u8* srcdata = Memory::GetPhysicalPointer(source_addr);
if (g_debug_context && Pica::g_debug_context->recorder) {
memory_accesses.AddAccess(source_addr,
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::FLOAT) ? 4
: (vertex_attribute_formats[i] == Regs::VertexAttributeFormat::SHORT) ? 2 : 1);
}
const float srcval =
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::BYTE) ? *reinterpret_cast<const s8*>(srcdata) :
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::UBYTE) ? *reinterpret_cast<const u8*>(srcdata) :
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::SHORT) ? *reinterpret_cast<const s16*>(srcdata) :
*reinterpret_cast<const float*>(srcdata);
input.attr[i][comp] = float24::FromFloat32(srcval);
LOG_TRACE(HW_GPU, "Loaded component %x of attribute %x for vertex %x (index %x) from 0x%08x + 0x%08x + 0x%04x: %f",
comp, i, vertex, index,
base_address,
vertex_attribute_sources[i] - base_address,
vertex_attribute_strides[i] * vertex + comp * vertex_attribute_element_size[i],
input.attr[i][comp].ToFloat32());
}
} else if (vertex_attribute_default[i]) {
// Load the default attribute if we're configured to do so
input.attr[i] = g_state.vs.default_attributes[i];
LOG_TRACE(HW_GPU, "Loaded default attribute %x for vertex %x (index %x): (%f, %f, %f, %f)",
i, vertex, index,
input.attr[i][0].ToFloat32(), input.attr[i][1].ToFloat32(),
input.attr[i][2].ToFloat32(), input.attr[i][3].ToFloat32());
} else {
// TODO(yuriks): In this case, no data gets loaded and the vertex
// remains with the last value it had. This isn't currently maintained
// as global state, however, and so won't work in Citra yet.
}
}
loader.LoadVertex(index, vertex, input, memory_accesses);
if (g_debug_context)
g_debug_context->OnEvent(DebugContext::Event::VertexLoaded, (void*)&input);
// Send to vertex shader
output = Shader::Run(shader_unit, input, num_total_attributes);
output = Shader::Run(shader_unit, input, loader.GetNumTotalAttributes());
if (is_indexed) {
vertex_cache[vertex_cache_pos] = output;

2
src/video_core/shader/shader.h
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@ -25,7 +25,7 @@ namespace Pica {
namespace Shader {
struct InputVertex {
Math::Vec4<float24> attr[16];
alignas(16) Math::Vec4<float24> attr[16];
};
struct OutputVertex {

119
src/video_core/vertex_loader.cpp Normal file
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@ -0,0 +1,119 @@
#include <cmath>
#include <string>
#include "boost/range/algorithm/fill.hpp"
#include "common/assert.h"
#include "common/alignment.h"
#include "common/bit_field.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/memory.h"
#include "debug_utils/debug_utils.h"
#include "pica.h"
#include "pica_state.h"
#include "pica_types.h"
#include "vertex_loader.h"
namespace Pica {
void VertexLoader::Setup(const Pica::Regs &regs) {
const auto& attribute_config = regs.vertex_attributes;
base_address = attribute_config.GetPhysicalBaseAddress();
num_total_attributes = attribute_config.GetNumTotalAttributes();
boost::fill(vertex_attribute_sources, 0xdeadbeef);
for (int i = 0; i < 16; i++) {
vertex_attribute_is_default[i] = attribute_config.IsDefaultAttribute(i);
}
// Setup attribute data from loaders
for (int loader = 0; loader < 12; ++loader) {
const auto& loader_config = attribute_config.attribute_loaders[loader];
u32 offset = 0;
// TODO: What happens if a loader overwrites a previous one's data?
for (unsigned component = 0; component < loader_config.component_count; ++component) {
if (component >= 12) {
LOG_ERROR(HW_GPU, "Overflow in the vertex attribute loader %u trying to load component %u", loader, component);
continue;
}
u32 attribute_index = loader_config.GetComponent(component);
if (attribute_index < 12) {
int element_size = attribute_config.GetElementSizeInBytes(attribute_index);
offset = Common::AlignUp(offset, element_size);
vertex_attribute_sources[attribute_index] = base_address + loader_config.data_offset + offset;
vertex_attribute_strides[attribute_index] = static_cast<u32>(loader_config.byte_count);
vertex_attribute_formats[attribute_index] = attribute_config.GetFormat(attribute_index);
vertex_attribute_elements[attribute_index] = attribute_config.GetNumElements(attribute_index);
vertex_attribute_element_size[attribute_index] = element_size;
offset += attribute_config.GetStride(attribute_index);
} else if (attribute_index < 16) {
// Attribute ids 12, 13, 14 and 15 signify 4, 8, 12 and 16-byte paddings, respectively
offset = Common::AlignUp(offset, 4);
offset += (attribute_index - 11) * 4;
} else {
UNREACHABLE(); // This is truly unreachable due to the number of bits for each component
}
}
}
}
void VertexLoader::LoadVertex(int index, int vertex, Shader::InputVertex &input, MemoryAccesses &memory_accesses) {
for (int i = 0; i < num_total_attributes; ++i) {
if (vertex_attribute_elements[i] != 0) {
// Default attribute values set if array elements have < 4 components. This
// is *not* carried over from the default attribute settings even if they're
// enabled for this attribute.
static const float24 zero = float24::FromFloat32(0.0f);
static const float24 one = float24::FromFloat32(1.0f);
input.attr[i] = Math::Vec4<float24>(zero, zero, zero, one);
// Load per-vertex data from the loader arrays
for (unsigned int comp = 0; comp < vertex_attribute_elements[i]; ++comp) {
u32 source_addr = vertex_attribute_sources[i] + vertex_attribute_strides[i] * vertex + comp * vertex_attribute_element_size[i];
const u8* srcdata = Memory::GetPhysicalPointer(source_addr);
if (g_debug_context && Pica::g_debug_context->recorder) {
memory_accesses.AddAccess(source_addr,
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::FLOAT) ? 4
: (vertex_attribute_formats[i] == Regs::VertexAttributeFormat::SHORT) ? 2 : 1);
}
const float srcval =
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::BYTE) ? *reinterpret_cast<const s8*>(srcdata) :
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::UBYTE) ? *reinterpret_cast<const u8*>(srcdata) :
(vertex_attribute_formats[i] == Regs::VertexAttributeFormat::SHORT) ? *reinterpret_cast<const s16*>(srcdata) :
*reinterpret_cast<const float*>(srcdata);
input.attr[i][comp] = float24::FromFloat32(srcval);
LOG_TRACE(HW_GPU, "Loaded component %x of attribute %x for vertex %x (index %x) from 0x%08x + 0x%08x + 0x%04x: %f",
comp, i, vertex, index,
base_address,
vertex_attribute_sources[i] - base_address,
vertex_attribute_strides[i] * vertex + comp * vertex_attribute_element_size[i],
input.attr[i][comp].ToFloat32());
}
} else if (vertex_attribute_is_default[i]) {
// Load the default attribute if we're configured to do so
input.attr[i] = g_state.vs.default_attributes[i];
LOG_TRACE(HW_GPU, "Loaded default attribute %x for vertex %x (index %x): (%f, %f, %f, %f)",
i, vertex, index,
input.attr[i][0].ToFloat32(), input.attr[i][1].ToFloat32(),
input.attr[i][2].ToFloat32(), input.attr[i][3].ToFloat32());
} else {
// TODO(yuriks): In this case, no data gets loaded and the vertex
// remains with the last value it had. This isn't currently maintained
// as global state, however, and so won't work in Citra yet.
}
}
}
} // namespace Pica

53
src/video_core/vertex_loader.h Normal file
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@ -0,0 +1,53 @@
#pragma once
#include "video_core/pica.h"
#include "video_core/shader/shader.h"
namespace Pica {
class MemoryAccesses {
/// Combine overlapping and close ranges
void SimplifyRanges() {
for (auto it = ranges.begin(); it != ranges.end(); ++it) {
// NOTE: We add 32 to the range end address to make sure "close" ranges are combined, too
auto it2 = std::next(it);
while (it2 != ranges.end() && it->first + it->second + 32 >= it2->first) {
it->second = std::max(it->second, it2->first + it2->second - it->first);
it2 = ranges.erase(it2);
}
}
}
public:
/// Record a particular memory access in the list
void AddAccess(u32 paddr, u32 size) {
// Create new range or extend existing one
ranges[paddr] = std::max(ranges[paddr], size);
// Simplify ranges...
SimplifyRanges();
}
/// Map of accessed ranges (mapping start address to range size)
std::map<u32, u32> ranges;
};
class VertexLoader {
public:
void Setup(const Pica::Regs &regs);
void LoadVertex(int index, int vertex, Shader::InputVertex &input, MemoryAccesses &memory_accesses);
u32 GetPhysicalBaseAddress() const { return base_address; }
int GetNumTotalAttributes() const { return num_total_attributes; }
private:
u32 vertex_attribute_sources[16];
u32 vertex_attribute_strides[16] = {};
Regs::VertexAttributeFormat vertex_attribute_formats[16] = {};
u32 vertex_attribute_elements[16] = {};
u32 vertex_attribute_element_size[16] = {};
bool vertex_attribute_is_default[16];
u32 base_address;
int num_total_attributes;
};
} // namespace Pica