/* libs/pixelflinger/codeflinger/GGLAssembler.h
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef ANDROID_GGLASSEMBLER_H
#define ANDROID_GGLASSEMBLER_H
#include <stdint.h>
#include <sys/types.h>
#include <private/pixelflinger/ggl_context.h>
#include "codeflinger/ARMAssemblerProxy.h"
namespace android {
// ----------------------------------------------------------------------------
#define CONTEXT_LOAD(REG, FIELD) \
LDR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
#define CONTEXT_STORE(REG, FIELD) \
STR(AL, REG, mBuilderContext.Rctx, immed12_pre(GGL_OFFSETOF(FIELD)))
class RegisterAllocator
{
public:
class RegisterFile;
RegisterFile& registerFile();
int reserveReg(int reg);
int obtainReg();
void recycleReg(int reg);
void reset();
class RegisterFile
{
public:
RegisterFile();
RegisterFile(const RegisterFile& rhs);
~RegisterFile();
void reset();
bool operator == (const RegisterFile& rhs) const;
bool operator != (const RegisterFile& rhs) const {
return !operator == (rhs);
}
int reserve(int reg);
void reserveSeveral(uint32_t regMask);
void recycle(int reg);
void recycleSeveral(uint32_t regMask);
int obtain();
inline int isUsed(int reg) const;
bool hasFreeRegs() const;
int countFreeRegs() const;
uint32_t touched() const;
inline uint32_t status() const { return mStatus; }
enum {
OUT_OF_REGISTERS = 0x1
};
private:
uint32_t mRegs;
uint32_t mTouched;
uint32_t mStatus;
};
class Scratch
{
public:
Scratch(RegisterFile& regFile)
: mRegFile(regFile), mScratch(0) {
}
~Scratch() {
mRegFile.recycleSeveral(mScratch);
}
int obtain() {
int reg = mRegFile.obtain();
mScratch |= 1<<reg;
return reg;
}
void recycle(int reg) {
mRegFile.recycle(reg);
mScratch &= ~(1<<reg);
}
bool isUsed(int reg) {
return (mScratch & (1<<reg));
}
int countFreeRegs() {
return mRegFile.countFreeRegs();
}
private:
RegisterFile& mRegFile;
uint32_t mScratch;
};
class Spill
{
public:
Spill(RegisterFile& regFile, ARMAssemblerInterface& gen, uint32_t reglist)
: mRegFile(regFile), mGen(gen), mRegList(reglist), mCount(0)
{
if (reglist) {
int count = 0;
while (reglist) {
count++;
reglist &= ~(1 << (31 - __builtin_clz(reglist)));
}
if (count == 1) {
int reg = 31 - __builtin_clz(mRegList);
mGen.STR(mGen.AL, reg, mGen.SP, mGen.immed12_pre(-4, 1));
} else {
mGen.STM(mGen.AL, mGen.DB, mGen.SP, 1, mRegList);
}
mRegFile.recycleSeveral(mRegList);
mCount = count;
}
}
~Spill() {
if (mRegList) {
if (mCount == 1) {
int reg = 31 - __builtin_clz(mRegList);
mGen.LDR(mGen.AL, reg, mGen.SP, mGen.immed12_post(4));
} else {
mGen.LDM(mGen.AL, mGen.IA, mGen.SP, 1, mRegList);
}
mRegFile.reserveSeveral(mRegList);
}
}
private:
RegisterFile& mRegFile;
ARMAssemblerInterface& mGen;
uint32_t mRegList;
int mCount;
};
private:
RegisterFile mRegs;
};
// ----------------------------------------------------------------------------
class GGLAssembler : public ARMAssemblerProxy, public RegisterAllocator
{
public:
GGLAssembler(ARMAssemblerInterface* target);
virtual ~GGLAssembler();
uint32_t* base() const { return 0; } // XXX
uint32_t* pc() const { return 0; } // XXX
void reset(int opt_level);
virtual void prolog();
virtual void epilog(uint32_t touched);
// generate scanline code for given needs
int scanline(const needs_t& needs, context_t const* c);
int scanline_core(const needs_t& needs, context_t const* c);
enum {
CLEAR_LO = 0x0001,
CLEAR_HI = 0x0002,
CORRUPTIBLE = 0x0004,
FIRST = 0x0008
};
enum { //load/store flags
WRITE_BACK = 0x0001
};
struct reg_t {
reg_t() : reg(-1), flags(0) {
}
reg_t(int r, int f=0)
: reg(r), flags(f) {
}
void setTo(int r, int f=0) {
reg=r; flags=f;
}
int reg;
uint16_t flags;
};
struct integer_t : public reg_t {
integer_t() : reg_t(), s(0) {
}
integer_t(int r, int sz=32, int f=0)
: reg_t(r, f), s(sz) {
}
void setTo(int r, int sz=32, int f=0) {
reg_t::setTo(r, f); s=sz;
}
int8_t s;
inline int size() const { return s; }
};
struct pixel_t : public reg_t {
pixel_t() : reg_t() {
memset(&format, 0, sizeof(GGLFormat));
}
pixel_t(int r, const GGLFormat* fmt, int f=0)
: reg_t(r, f), format(*fmt) {
}
void setTo(int r, const GGLFormat* fmt, int f=0) {
reg_t::setTo(r, f); format = *fmt;
}
GGLFormat format;
inline int hi(int c) const { return format.c[c].h; }
inline int low(int c) const { return format.c[c].l; }
inline int mask(int c) const { return ((1<<size(c))-1) << low(c); }
inline int size() const { return format.size*8; }
inline int size(int c) const { return component_size(c); }
inline int component_size(int c) const { return hi(c) - low(c); }
};
struct component_t : public reg_t {
component_t() : reg_t(), h(0), l(0) {
}
component_t(int r, int f=0)
: reg_t(r, f), h(0), l(0) {
}
component_t(int r, int lo, int hi, int f=0)
: reg_t(r, f), h(hi), l(lo) {
}
explicit component_t(const integer_t& rhs)
: reg_t(rhs.reg, rhs.flags), h(rhs.s), l(0) {
}
explicit component_t(const pixel_t& rhs, int component) {
setTo( rhs.reg,
rhs.format.c[component].l,
rhs.format.c[component].h,
rhs.flags|CLEAR_LO|CLEAR_HI);
}
void setTo(int r, int lo=0, int hi=0, int f=0) {
reg_t::setTo(r, f); h=hi; l=lo;
}
int8_t h;
int8_t l;
inline int size() const { return h-l; }
};
struct pointer_t : public reg_t {
pointer_t() : reg_t(), size(0) {
}
pointer_t(int r, int s, int f=0)
: reg_t(r, f), size(s) {
}
void setTo(int r, int s, int f=0) {
reg_t::setTo(r, f); size=s;
}
int8_t size;
};
private:
struct tex_coord_t {
reg_t s;
reg_t t;
pointer_t ptr;
};
struct fragment_parts_t {
uint32_t packed : 1;
uint32_t reload : 2;
uint32_t iterated_packed : 1;
pixel_t iterated;
pointer_t cbPtr;
pointer_t covPtr;
reg_t count;
reg_t argb[4];
reg_t argb_dx[4];
reg_t z;
reg_t dither;
pixel_t texel[GGL_TEXTURE_UNIT_COUNT];
tex_coord_t coords[GGL_TEXTURE_UNIT_COUNT];
};
struct texture_unit_t {
int format_idx;
GGLFormat format;
int bits;
int swrap;
int twrap;
int env;
int pot;
int linear;
uint8_t mask;
uint8_t replaced;
};
struct texture_machine_t {
texture_unit_t tmu[GGL_TEXTURE_UNIT_COUNT];
uint8_t mask;
uint8_t replaced;
uint8_t directTexture;
uint8_t activeUnits;
};
struct component_info_t {
bool masked : 1;
bool inDest : 1;
bool needed : 1;
bool replaced : 1;
bool iterated : 1;
bool smooth : 1;
bool blend : 1;
bool fog : 1;
};
struct builder_context_t {
context_t const* c;
needs_t needs;
int Rctx;
};
template <typename T>
void modify(T& r, Scratch& regs)
{
if (!(r.flags & CORRUPTIBLE)) {
r.reg = regs.obtain();
r.flags |= CORRUPTIBLE;
}
}
// helpers
void base_offset(const pointer_t& d, const pointer_t& b, const reg_t& o);
// texture environement
void modulate( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component);
void decal( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component);
void blend( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component, int tmu);
void add( component_t& dest,
const component_t& incoming,
const pixel_t& texel, int component);
// load/store stuff
void store(const pointer_t& addr, const pixel_t& src, uint32_t flags=0);
void load(const pointer_t& addr, const pixel_t& dest, uint32_t flags=0);
void extract(integer_t& d, const pixel_t& s, int component);
void extract(component_t& d, const pixel_t& s, int component);
void extract(integer_t& d, int s, int h, int l, int bits=32);
void expand(integer_t& d, const integer_t& s, int dbits);
void expand(integer_t& d, const component_t& s, int dbits);
void expand(component_t& d, const component_t& s, int dbits);
void downshift(pixel_t& d, int component, component_t s, const reg_t& dither);
void mul_factor( component_t& d,
const integer_t& v,
const integer_t& f);
void mul_factor_add( component_t& d,
const integer_t& v,
const integer_t& f,
const component_t& a);
void component_add( component_t& d,
const integer_t& dst,
const integer_t& src);
void component_sat( const component_t& v);
void build_scanline_prolog( fragment_parts_t& parts,
const needs_t& needs);
void build_smooth_shade(const fragment_parts_t& parts);
void build_component( pixel_t& pixel,
const fragment_parts_t& parts,
int component,
Scratch& global_scratches);
void build_incoming_component(
component_t& temp,
int dst_size,
const fragment_parts_t& parts,
int component,
Scratch& scratches,
Scratch& global_scratches);
void init_iterated_color(fragment_parts_t& parts, const reg_t& x);
void build_iterated_color( component_t& fragment,
const fragment_parts_t& parts,
int component,
Scratch& regs);
void decodeLogicOpNeeds(const needs_t& needs);
void decodeTMUNeeds(const needs_t& needs, context_t const* c);
void init_textures( tex_coord_t* coords,
const reg_t& x,
const reg_t& y);
void build_textures( fragment_parts_t& parts,
Scratch& regs);
void filter8( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void filter16( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void filter24( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void filter32( const fragment_parts_t& parts,
pixel_t& texel, const texture_unit_t& tmu,
int U, int V, pointer_t& txPtr,
int FRAC_BITS);
void build_texture_environment( component_t& fragment,
const fragment_parts_t& parts,
int component,
Scratch& regs);
void wrapping( int d,
int coord, int size,
int tx_wrap, int tx_linear);
void build_fog( component_t& temp,
int component,
Scratch& parent_scratches);
void build_blending( component_t& in_out,
const pixel_t& pixel,
int component,
Scratch& parent_scratches);
void build_blend_factor(
integer_t& factor, int f, int component,
const pixel_t& dst_pixel,
integer_t& fragment,
integer_t& fb,
Scratch& scratches);
void build_blendFOneMinusF( component_t& temp,
const integer_t& factor,
const integer_t& fragment,
const integer_t& fb);
void build_blendOneMinusFF( component_t& temp,
const integer_t& factor,
const integer_t& fragment,
const integer_t& fb);
void build_coverage_application(component_t& fragment,
const fragment_parts_t& parts,
Scratch& regs);
void build_alpha_test(component_t& fragment, const fragment_parts_t& parts);
enum { Z_TEST=1, Z_WRITE=2 };
void build_depth_test(const fragment_parts_t& parts, uint32_t mask);
void build_iterate_z(const fragment_parts_t& parts);
void build_iterate_f(const fragment_parts_t& parts);
void build_iterate_texture_coordinates(const fragment_parts_t& parts);
void build_logic_op(pixel_t& pixel, Scratch& regs);
void build_masking(pixel_t& pixel, Scratch& regs);
void build_and_immediate(int d, int s, uint32_t mask, int bits);
bool isAlphaSourceNeeded() const;
enum {
FACTOR_SRC=1, FACTOR_DST=2, BLEND_SRC=4, BLEND_DST=8
};
enum {
LOGIC_OP=1, LOGIC_OP_SRC=2, LOGIC_OP_DST=4
};
static int blending_codes(int fs, int fd);
builder_context_t mBuilderContext;
texture_machine_t mTextureMachine;
component_info_t mInfo[4];
int mBlending;
int mMasking;
int mAllMasked;
int mLogicOp;
int mAlphaTest;
int mAA;
int mDithering;
int mDepthTest;
int mSmooth;
int mFog;
pixel_t mDstPixel;
GGLFormat mCbFormat;
int mBlendFactorCached;
integer_t mAlphaSource;
int mBaseRegister;
int mBlendSrc;
int mBlendDst;
int mBlendSrcA;
int mBlendDstA;
int mOptLevel;
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_GGLASSEMBLER_H