mirror of
https://github.com/wheremyfoodat/Panda3DS.git
synced 2025-04-06 06:05:40 +12:00
PICA: Add LITP test + interpreter implementation
This commit is contained in:
wheremyfoodat
parent
eacd9fdbff
commit
195f3388e9
5 changed files with 490 additions and 1 deletions
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@ -23,7 +23,7 @@ namespace ShaderOpcodes {
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DST = 0x04,
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EX2 = 0x05,
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LG2 = 0x06,
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LIT = 0x07,
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LITP = 0x07,
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MUL = 0x08,
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SGE = 0x09,
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SLT = 0x0A,
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@ -161,6 +161,7 @@ class PICAShader {
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void jmpc(u32 instruction);
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void jmpu(u32 instruction);
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void lg2(u32 instruction);
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void litp(u32 instruction);
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void loop(u32 instruction);
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void mad(u32 instruction);
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void madi(u32 instruction);
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@ -74,6 +74,9 @@ void PICAShader::run() {
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break;
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}
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// Undocumented, implementation based on 3DBrew and hw testing (see tests/PICA_LITP)
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case ShaderOpcodes::LITP: [[unlikely]] litp(instruction); break;
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default: Helpers::panic("Unimplemented PICA instruction %08X (Opcode = %02X)", instruction, opcode);
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}
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@ -753,4 +756,33 @@ void PICAShader::jmpu(u32 instruction) {
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if (((boolUniform >> bit) & 1) == test) // Jump if the bool uniform is the value we want
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pc = dest;
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}
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void PICAShader::litp(u32 instruction) {
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const u32 operandDescriptor = operandDescriptors[instruction & 0x7f];
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u32 src = getBits<12, 7>(instruction);
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const u32 idx = getBits<19, 2>(instruction);
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const u32 dest = getBits<21, 5>(instruction);
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src = getIndexedSource(src, idx);
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vec4f srcVec = getSourceSwizzled<1>(src, operandDescriptor);
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vec4f& destVector = getDest(dest);
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// Compare registers are set based on whether src.x and src.w are >= 0.0
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cmpRegister[0] = (srcVec[0].toFloat32() >= 0.0f);
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cmpRegister[1] = (srcVec[3].toFloat32() >= 0.0f);
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vec4f result;
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// TODO: Does max here have the same non-IEEE NaN behavior as the max instruction?
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result[0] = f24::fromFloat32(std::max(srcVec[0].toFloat32(), 0.0f));
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result[1] = f24::fromFloat32(std::clamp(srcVec[1].toFloat32(), -127.9961f, 127.9961f));
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result[2] = f24::zero();
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result[3] = f24::fromFloat32(std::max(srcVec[3].toFloat32(), 0.0f));
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u32 componentMask = operandDescriptor & 0xf;
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for (int i = 0; i < 4; i++) {
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if (componentMask & (1 << i)) {
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destVector[3 - i] = result[3 - i];
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}
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}
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}
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255
tests/PICA_LITP/Makefile
Normal file
255
tests/PICA_LITP/Makefile
Normal file
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@ -0,0 +1,255 @@
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#---------------------------------------------------------------------------------
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.SUFFIXES:
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(DEVKITARM)),)
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$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
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endif
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TOPDIR ?= $(CURDIR)
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include $(DEVKITARM)/3ds_rules
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#---------------------------------------------------------------------------------
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# TARGET is the name of the output
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# BUILD is the directory where object files & intermediate files will be placed
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# SOURCES is a list of directories containing source code
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# DATA is a list of directories containing data files
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# INCLUDES is a list of directories containing header files
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# GRAPHICS is a list of directories containing graphics files
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# GFXBUILD is the directory where converted graphics files will be placed
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# If set to $(BUILD), it will statically link in the converted
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# files as if they were data files.
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#
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# NO_SMDH: if set to anything, no SMDH file is generated.
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# ROMFS is the directory which contains the RomFS, relative to the Makefile (Optional)
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# APP_TITLE is the name of the app stored in the SMDH file (Optional)
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# APP_DESCRIPTION is the description of the app stored in the SMDH file (Optional)
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# APP_AUTHOR is the author of the app stored in the SMDH file (Optional)
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# ICON is the filename of the icon (.png), relative to the project folder.
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# If not set, it attempts to use one of the following (in this order):
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# - <Project name>.png
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# - icon.png
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# - <libctru folder>/default_icon.png
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#---------------------------------------------------------------------------------
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TARGET := $(notdir $(CURDIR))
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BUILD := build
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SOURCES := source
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DATA := data
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INCLUDES := include
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GRAPHICS := gfx
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GFXBUILD := $(BUILD)
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#ROMFS := romfs
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#GFXBUILD := $(ROMFS)/gfx
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#---------------------------------------------------------------------------------
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# options for code generation
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#---------------------------------------------------------------------------------
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ARCH := -march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
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CFLAGS := -g -Wall -O2 -mword-relocations \
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-ffunction-sections \
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$(ARCH)
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CFLAGS += $(INCLUDE) -D__3DS__
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CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
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ASFLAGS := -g $(ARCH)
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LDFLAGS = -specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
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LIBS := -lcitro3d -lctru -lm
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#---------------------------------------------------------------------------------
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# list of directories containing libraries, this must be the top level containing
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# include and lib
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#---------------------------------------------------------------------------------
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LIBDIRS := $(CTRULIB)
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#---------------------------------------------------------------------------------
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# no real need to edit anything past this point unless you need to add additional
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# rules for different file extensions
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#---------------------------------------------------------------------------------
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ifneq ($(BUILD),$(notdir $(CURDIR)))
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#---------------------------------------------------------------------------------
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export OUTPUT := $(CURDIR)/$(TARGET)
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export TOPDIR := $(CURDIR)
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export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
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$(foreach dir,$(GRAPHICS),$(CURDIR)/$(dir)) \
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$(foreach dir,$(DATA),$(CURDIR)/$(dir))
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export DEPSDIR := $(CURDIR)/$(BUILD)
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CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
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CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
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SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
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PICAFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.v.pica)))
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SHLISTFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.shlist)))
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GFXFILES := $(foreach dir,$(GRAPHICS),$(notdir $(wildcard $(dir)/*.t3s)))
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BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
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#---------------------------------------------------------------------------------
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# use CXX for linking C++ projects, CC for standard C
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#---------------------------------------------------------------------------------
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ifeq ($(strip $(CPPFILES)),)
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#---------------------------------------------------------------------------------
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export LD := $(CC)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export LD := $(CXX)
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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#---------------------------------------------------------------------------------
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ifeq ($(GFXBUILD),$(BUILD))
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#---------------------------------------------------------------------------------
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export T3XFILES := $(GFXFILES:.t3s=.t3x)
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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export ROMFS_T3XFILES := $(patsubst %.t3s, $(GFXBUILD)/%.t3x, $(GFXFILES))
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export T3XHFILES := $(patsubst %.t3s, $(BUILD)/%.h, $(GFXFILES))
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#---------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------
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export OFILES_SOURCES := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
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export OFILES_BIN := $(addsuffix .o,$(BINFILES)) \
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$(PICAFILES:.v.pica=.shbin.o) $(SHLISTFILES:.shlist=.shbin.o) \
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$(addsuffix .o,$(T3XFILES))
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export OFILES := $(OFILES_BIN) $(OFILES_SOURCES)
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export HFILES := $(PICAFILES:.v.pica=_shbin.h) $(SHLISTFILES:.shlist=_shbin.h) \
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$(addsuffix .h,$(subst .,_,$(BINFILES))) \
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$(GFXFILES:.t3s=.h)
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export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
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$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
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-I$(CURDIR)/$(BUILD)
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export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
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export _3DSXDEPS := $(if $(NO_SMDH),,$(OUTPUT).smdh)
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ifeq ($(strip $(ICON)),)
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icons := $(wildcard *.png)
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ifneq (,$(findstring $(TARGET).png,$(icons)))
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export APP_ICON := $(TOPDIR)/$(TARGET).png
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else
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ifneq (,$(findstring icon.png,$(icons)))
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export APP_ICON := $(TOPDIR)/icon.png
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endif
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endif
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else
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export APP_ICON := $(TOPDIR)/$(ICON)
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endif
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ifeq ($(strip $(NO_SMDH)),)
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export _3DSXFLAGS += --smdh=$(CURDIR)/$(TARGET).smdh
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endif
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ifneq ($(ROMFS),)
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export _3DSXFLAGS += --romfs=$(CURDIR)/$(ROMFS)
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endif
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.PHONY: all clean
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#---------------------------------------------------------------------------------
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all: $(BUILD) $(GFXBUILD) $(DEPSDIR) $(ROMFS_T3XFILES) $(T3XHFILES)
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@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
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$(BUILD):
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@mkdir -p $@
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ifneq ($(GFXBUILD),$(BUILD))
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$(GFXBUILD):
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@mkdir -p $@
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endif
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ifneq ($(DEPSDIR),$(BUILD))
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$(DEPSDIR):
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@mkdir -p $@
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endif
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#---------------------------------------------------------------------------------
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clean:
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@echo clean ...
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@rm -fr $(BUILD) $(TARGET).3dsx $(OUTPUT).smdh $(TARGET).elf $(GFXBUILD)
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#---------------------------------------------------------------------------------
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$(GFXBUILD)/%.t3x $(BUILD)/%.h : %.t3s
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@tex3ds -i $< -H $(BUILD)/$*.h -d $(DEPSDIR)/$*.d -o $(GFXBUILD)/$*.t3x
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#---------------------------------------------------------------------------------
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else
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#---------------------------------------------------------------------------------
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# main targets
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#---------------------------------------------------------------------------------
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$(OUTPUT).3dsx : $(OUTPUT).elf $(_3DSXDEPS)
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$(OFILES_SOURCES) : $(HFILES)
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$(OUTPUT).elf : $(OFILES)
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#---------------------------------------------------------------------------------
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# you need a rule like this for each extension you use as binary data
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#---------------------------------------------------------------------------------
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%.bin.o %_bin.h : %.bin
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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#---------------------------------------------------------------------------------
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.PRECIOUS : %.t3x
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#---------------------------------------------------------------------------------
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%.t3x.o %_t3x.h : %.t3x
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@$(bin2o)
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#---------------------------------------------------------------------------------
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# rules for assembling GPU shaders
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#---------------------------------------------------------------------------------
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define shader-as
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$(eval CURBIN := $*.shbin)
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$(eval DEPSFILE := $(DEPSDIR)/$*.shbin.d)
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echo "$(CURBIN).o: $< $1" > $(DEPSFILE)
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echo "extern const u8" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"_end[];" > `(echo $(CURBIN) | tr . _)`.h
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echo "extern const u8" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`"[];" >> `(echo $(CURBIN) | tr . _)`.h
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echo "extern const u32" `(echo $(CURBIN) | sed -e 's/^\([0-9]\)/_\1/' | tr . _)`_size";" >> `(echo $(CURBIN) | tr . _)`.h
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picasso -o $(CURBIN) $1
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bin2s $(CURBIN) | $(AS) -o $*.shbin.o
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endef
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%.shbin.o %_shbin.h : %.v.pica %.g.pica
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@echo $(notdir $^)
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@$(call shader-as,$^)
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%.shbin.o %_shbin.h : %.v.pica
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@echo $(notdir $<)
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@$(call shader-as,$<)
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%.shbin.o %_shbin.h : %.shlist
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@echo $(notdir $<)
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@$(call shader-as,$(foreach file,$(shell cat $<),$(dir $<)$(file)))
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#---------------------------------------------------------------------------------
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%.t3x %.h : %.t3s
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#---------------------------------------------------------------------------------
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@echo $(notdir $<)
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@tex3ds -i $< -H $*.h -d $*.d -o $*.t3x
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-include $(DEPSDIR)/*.d
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#---------------------------------------------------------------------------------------
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endif
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#---------------------------------------------------------------------------------------
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128
tests/PICA_LITP/source/main.c
Normal file
128
tests/PICA_LITP/source/main.c
Normal file
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@ -0,0 +1,128 @@
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#include <3ds.h>
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#include <citro3d.h>
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#include <string.h>
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#include "vshader_shbin.h"
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#define CLEAR_COLOR 0x68B0D8FF
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#define DISPLAY_TRANSFER_FLAGS \
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(GX_TRANSFER_FLIP_VERT(0) | GX_TRANSFER_OUT_TILED(0) | GX_TRANSFER_RAW_COPY(0) | \
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GX_TRANSFER_IN_FORMAT(GX_TRANSFER_FMT_RGBA8) | GX_TRANSFER_OUT_FORMAT(GX_TRANSFER_FMT_RGB8) | \
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GX_TRANSFER_SCALING(GX_TRANSFER_SCALE_NO))
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static DVLB_s* vshader_dvlb;
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static shaderProgram_s program;
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static int uLoc_projection;
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static C3D_Mtx projection;
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static void sceneInit(void)
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{
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// Load the vertex shader, create a shader program and bind it
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vshader_dvlb = DVLB_ParseFile((u32*)vshader_shbin, vshader_shbin_size);
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shaderProgramInit(&program);
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shaderProgramSetVsh(&program, &vshader_dvlb->DVLE[0]);
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C3D_BindProgram(&program);
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// Get the location of the uniforms
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uLoc_projection = shaderInstanceGetUniformLocation(program.vertexShader, "projection");
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// Configure attributes for use with the vertex shader
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// Attribute format and element count are ignored in immediate mode
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C3D_AttrInfo* attrInfo = C3D_GetAttrInfo();
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AttrInfo_Init(attrInfo);
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AttrInfo_AddLoader(attrInfo, 0, GPU_FLOAT, 3); // v0=position
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AttrInfo_AddLoader(attrInfo, 1, GPU_FLOAT, 3); // v1=color
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// Compute the projection matrix
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Mtx_OrthoTilt(&projection, 0.0, 400.0, 0.0, 240.0, 0.0, 1.0, true);
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// Configure the first fragment shading substage to just pass through the vertex color
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// See https://www.opengl.org/sdk/docs/man2/xhtml/glTexEnv.xml for more insight
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C3D_TexEnv* env = C3D_GetTexEnv(0);
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C3D_TexEnvInit(env);
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C3D_TexEnvSrc(env, C3D_Both, GPU_PRIMARY_COLOR, 0, 0);
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C3D_TexEnvFunc(env, C3D_Both, GPU_REPLACE);
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}
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static void sceneRender(void)
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{
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// Update the uniforms
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C3D_FVUnifMtx4x4(GPU_VERTEX_SHADER, uLoc_projection, &projection);
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// Draw the triangle directly
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C3D_ImmDrawBegin(GPU_TRIANGLES);
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// Triangle 1
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// This vertex has r >= 0 and a >= 0 so the shader should output magenta (cmp.x = cmp.y = 1)
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C3D_ImmSendAttrib(200.0f, 200.0f, 0.5f, 0.0f); // v0=position
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C3D_ImmSendAttrib(1.0f, 0.0f, 0.0f, 1.0f); // v1=color
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// This vertex only has a >= 0, so the shader should output lime (cmp.x = 0, cmp.y = 1)
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C3D_ImmSendAttrib(100.0f, 40.0f, 0.5f, 0.0f);
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C3D_ImmSendAttrib(-0.5f, 1.0f, 0.0f, 1.0f);
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// This vertex only has r >= 0, so the shader should output cyan (cmp.x = 1, cmp.y = 0)
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C3D_ImmSendAttrib(300.0f, 40.0f, 0.5f, 0.0f);
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C3D_ImmSendAttrib(0.5f, 0.0f, 1.0f, -1.0f);
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// Triangle 2
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// The next 3 vertices have r < 0, a < 0, so the output of the shader should be the output of litp with alpha set to 1 (cmp.x = cmp.y = 0)
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C3D_ImmSendAttrib(10.0f, 20.0f, 0.5f, 0.0f);
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// Output g component should be 64 / 128 = 0.5
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C3D_ImmSendAttrib(-1.0f, 64.0f, 0.0f, -1.0f);
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C3D_ImmSendAttrib(90.0f, 20.0f, 0.5f, 0.0f);
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// Output g component should be 128 / 128 = 1.0
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C3D_ImmSendAttrib(-1.0f, 256.0f, 1.0f, -1.0f);
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C3D_ImmSendAttrib(40.0f, 40.0f, 0.5f, 0.0f);
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// Output g component should be 0 / 128 = 0
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C3D_ImmSendAttrib(-1.0f, 0.0f, 0.5f, -1.0f);
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C3D_ImmDrawEnd();
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}
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static void sceneExit(void)
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{
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// Free the shader program
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shaderProgramFree(&program);
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DVLB_Free(vshader_dvlb);
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}
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int main()
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{
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// Initialize graphics
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gfxInitDefault();
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C3D_Init(C3D_DEFAULT_CMDBUF_SIZE);
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// Initialize the render target
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C3D_RenderTarget* target = C3D_RenderTargetCreate(240, 400, GPU_RB_RGBA8, GPU_RB_DEPTH24_STENCIL8);
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C3D_RenderTargetSetOutput(target, GFX_TOP, GFX_LEFT, DISPLAY_TRANSFER_FLAGS);
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// Initialize the scene
|
||||
sceneInit();
|
||||
|
||||
// Main loop
|
||||
while (aptMainLoop())
|
||||
{
|
||||
hidScanInput();
|
||||
|
||||
// Respond to user input
|
||||
u32 kDown = hidKeysDown();
|
||||
if (kDown & KEY_START)
|
||||
break; // break in order to return to hbmenu
|
||||
|
||||
// Render the scene
|
||||
C3D_FrameBegin(C3D_FRAME_SYNCDRAW);
|
||||
C3D_RenderTargetClear(target, C3D_CLEAR_ALL, CLEAR_COLOR, 0);
|
||||
C3D_FrameDrawOn(target);
|
||||
sceneRender();
|
||||
C3D_FrameEnd(0);
|
||||
}
|
||||
|
||||
// Deinitialize the scene
|
||||
sceneExit();
|
||||
|
||||
// Deinitialize graphics
|
||||
C3D_Fini();
|
||||
gfxExit();
|
||||
return 0;
|
||||
}
|
||||
73
tests/PICA_LITP/source/vshader.v.pica
Normal file
73
tests/PICA_LITP/source/vshader.v.pica
Normal file
|
|
@ -0,0 +1,73 @@
|
|||
; Example PICA200 vertex shader
|
||||
|
||||
; Uniforms
|
||||
.fvec projection[4]
|
||||
|
||||
; Constants
|
||||
.constf myconst(0.0, 1.0, -1.0, 0.1)
|
||||
.constf myconst2(0.3, 0.0, 0.0, 0.0)
|
||||
.alias zeros myconst.xxxx ; Vector full of zeros
|
||||
.alias ones myconst.yyyy ; Vector full of ones
|
||||
|
||||
.constf magenta(0.8, 0.192, 0.812, 1.0)
|
||||
.constf cyan(0.137, 0.949, 0.906, 1.0)
|
||||
.constf lime(0.286, 0.929, 0.412, 1.0)
|
||||
|
||||
.constf normalize_y(1.0, 1.0/128.0, 1.0, 1.0)
|
||||
|
||||
; Outputs
|
||||
.out outpos position
|
||||
.out outclr color
|
||||
|
||||
; Inputs (defined as aliases for convenience)
|
||||
.alias inpos v0
|
||||
.alias inclr v1
|
||||
|
||||
.bool test
|
||||
|
||||
.proc main
|
||||
; Force the w component of inpos to be 1.0
|
||||
mov r0.xyz, inpos
|
||||
mov r0.w, ones
|
||||
|
||||
; outpos = projectionMatrix * inpos
|
||||
dp4 outpos.x, projection[0], r0
|
||||
dp4 outpos.y, projection[1], r0
|
||||
dp4 outpos.z, projection[2], r0
|
||||
dp4 outpos.w, projection[3], r0
|
||||
|
||||
; Test litp via the output fragment colour
|
||||
; r1 = input colour
|
||||
mov r1, inclr
|
||||
|
||||
; This should perform the following operation:
|
||||
; cmp = (x >= 0, w >= 0)
|
||||
; dest = ( max(x, 0), clamp(y, -128, +128 ), 0, max(w, 0) );
|
||||
litp r2, r1
|
||||
|
||||
ifc cmp.x
|
||||
ifc cmp.y
|
||||
; cmp.x = 1, cmp.y = 1, write magenta
|
||||
mov outclr, magenta
|
||||
end
|
||||
.else
|
||||
; cmp.x = 1, cmp.y = 0, write cyan
|
||||
mov outclr, cyan
|
||||
end
|
||||
.end
|
||||
.else
|
||||
ifc cmp.y
|
||||
; cmp.x = 0, cmp.y
|
||||
mov outclr, lime
|
||||
end
|
||||
.end
|
||||
.end
|
||||
|
||||
; cmp.x 0, cmp.y = 0, write output of litp to out colour, with y normalized to [-1, 1]
|
||||
mul r2.xyz, normalize_y, r2
|
||||
; Set alpha to one
|
||||
mov r2.a, ones.a
|
||||
|
||||
mov outclr, r2
|
||||
end
|
||||
.end
|
||||
Loading…
Add table
Reference in a new issue