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-rw-r--r--libpixelflinger/scanline.cpp1496
1 files changed, 0 insertions, 1496 deletions
diff --git a/libpixelflinger/scanline.cpp b/libpixelflinger/scanline.cpp
deleted file mode 100644
index f70030680..000000000
--- a/libpixelflinger/scanline.cpp
+++ /dev/null
@@ -1,1496 +0,0 @@
-/* libs/pixelflinger/scanline.cpp
-**
-** 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.
-*/
-
-
-#define LOG_TAG "pixelflinger"
-
-#include <assert.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <cutils/memory.h>
-#include <cutils/log.h>
-
-#include "buffer.h"
-#include "scanline.h"
-
-#include "codeflinger/CodeCache.h"
-#include "codeflinger/GGLAssembler.h"
-#include "codeflinger/ARMAssembler.h"
-//#include "codeflinger/ARMAssemblerOptimizer.h"
-
-// ----------------------------------------------------------------------------
-
-#define ANDROID_CODEGEN_GENERIC 0 // force generic pixel pipeline
-#define ANDROID_CODEGEN_C 1 // hand-written C, fallback generic
-#define ANDROID_CODEGEN_ASM 2 // hand-written asm, fallback generic
-#define ANDROID_CODEGEN_GENERATED 3 // hand-written asm, fallback codegen
-
-#ifdef NDEBUG
-# define ANDROID_RELEASE
-# define ANDROID_CODEGEN ANDROID_CODEGEN_GENERATED
-#else
-# define ANDROID_DEBUG
-# define ANDROID_CODEGEN ANDROID_CODEGEN_GENERATED
-#endif
-
-#if defined(__arm__)
-# define ANDROID_ARM_CODEGEN 1
-#else
-# define ANDROID_ARM_CODEGEN 0
-#endif
-
-#define DEBUG__CODEGEN_ONLY 0
-
-
-#define ASSEMBLY_SCRATCH_SIZE 2048
-
-// ----------------------------------------------------------------------------
-namespace android {
-// ----------------------------------------------------------------------------
-
-static void init_y(context_t*, int32_t);
-static void init_y_noop(context_t*, int32_t);
-static void init_y_packed(context_t*, int32_t);
-static void init_y_error(context_t*, int32_t);
-
-static void step_y__generic(context_t* c);
-static void step_y__nop(context_t*);
-static void step_y__smooth(context_t* c);
-static void step_y__tmu(context_t* c);
-static void step_y__w(context_t* c);
-
-static void scanline(context_t* c);
-static void scanline_perspective(context_t* c);
-static void scanline_perspective_single(context_t* c);
-static void scanline_t32cb16blend(context_t* c);
-static void scanline_t32cb16(context_t* c);
-static void scanline_memcpy(context_t* c);
-static void scanline_memset8(context_t* c);
-static void scanline_memset16(context_t* c);
-static void scanline_memset32(context_t* c);
-static void scanline_noop(context_t* c);
-static void scanline_set(context_t* c);
-static void scanline_clear(context_t* c);
-
-static void rect_generic(context_t* c, size_t yc);
-static void rect_memcpy(context_t* c, size_t yc);
-
-extern "C" void scanline_t32cb16blend_arm(uint16_t*, uint32_t*, size_t);
-extern "C" void scanline_t32cb16_arm(uint16_t *dst, uint32_t *src, size_t ct);
-
-// ----------------------------------------------------------------------------
-
-struct shortcut_t {
- needs_filter_t filter;
- const char* desc;
- void (*scanline)(context_t*);
- void (*init_y)(context_t*, int32_t);
-};
-
-// Keep in sync with needs
-static shortcut_t shortcuts[] = {
- { { { 0x03515104, 0x00000077, { 0x00000A01, 0x00000000 } },
- { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
- "565 fb, 8888 tx, blend", scanline_t32cb16blend, init_y_noop },
- { { { 0x03010104, 0x00000077, { 0x00000A01, 0x00000000 } },
- { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } },
- "565 fb, 8888 tx", scanline_t32cb16, init_y_noop },
- { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } },
- { 0x00000000, 0x00000007, { 0x00000000, 0x00000000 } } },
- "(nop) alpha test", scanline_noop, init_y_noop },
- { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } },
- { 0x00000000, 0x00000070, { 0x00000000, 0x00000000 } } },
- "(nop) depth test", scanline_noop, init_y_noop },
- { { { 0x05000000, 0x00000000, { 0x00000000, 0x00000000 } },
- { 0x0F000000, 0x00000080, { 0x00000000, 0x00000000 } } },
- "(nop) logic_op", scanline_noop, init_y_noop },
- { { { 0xF0000000, 0x00000000, { 0x00000000, 0x00000000 } },
- { 0xF0000000, 0x00000080, { 0x00000000, 0x00000000 } } },
- "(nop) color mask", scanline_noop, init_y_noop },
- { { { 0x0F000000, 0x00000077, { 0x00000000, 0x00000000 } },
- { 0xFF000000, 0x000000F7, { 0x00000000, 0x00000000 } } },
- "(set) logic_op", scanline_set, init_y_noop },
- { { { 0x00000000, 0x00000077, { 0x00000000, 0x00000000 } },
- { 0xFF000000, 0x000000F7, { 0x00000000, 0x00000000 } } },
- "(clear) logic_op", scanline_clear, init_y_noop },
- { { { 0x03000000, 0x00000077, { 0x00000000, 0x00000000 } },
- { 0xFFFFFF00, 0x000000F7, { 0x00000000, 0x00000000 } } },
- "(clear) blending 0/0", scanline_clear, init_y_noop },
- { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } },
- { 0x0000003F, 0x00000000, { 0x00000000, 0x00000000 } } },
- "(error) invalid color-buffer format", scanline_noop, init_y_error },
-};
-static const needs_filter_t noblend1to1 = {
- // (disregard dithering, see below)
- { 0x03010100, 0x00000077, { 0x00000A00, 0x00000000 } },
- { 0xFFFFFFC0, 0xFFFFFEFF, { 0xFFFFFFC0, 0x0000003F } }
-};
-static const needs_filter_t fill16noblend = {
- { 0x03010100, 0x00000077, { 0x00000000, 0x00000000 } },
- { 0xFFFFFFC0, 0xFFFFFFFF, { 0x0000003F, 0x0000003F } }
-};
-
-// ----------------------------------------------------------------------------
-
-#if ANDROID_ARM_CODEGEN
-static CodeCache gCodeCache(12 * 1024);
-
-class ScanlineAssembly : public Assembly {
- AssemblyKey<needs_t> mKey;
-public:
- ScanlineAssembly(needs_t needs, size_t size)
- : Assembly(size), mKey(needs) { }
- const AssemblyKey<needs_t>& key() const { return mKey; }
-};
-#endif
-
-// ----------------------------------------------------------------------------
-
-void ggl_init_scanline(context_t* c)
-{
- c->init_y = init_y;
- c->step_y = step_y__generic;
- c->scanline = scanline;
-}
-
-void ggl_uninit_scanline(context_t* c)
-{
- if (c->state.buffers.coverage)
- free(c->state.buffers.coverage);
-#if ANDROID_ARM_CODEGEN
- if (c->scanline_as)
- c->scanline_as->decStrong(c);
-#endif
-}
-
-// ----------------------------------------------------------------------------
-
-static void pick_scanline(context_t* c)
-{
-#if (!defined(DEBUG__CODEGEN_ONLY) || (DEBUG__CODEGEN_ONLY == 0))
-
-#if ANDROID_CODEGEN == ANDROID_CODEGEN_GENERIC
- c->init_y = init_y;
- c->step_y = step_y__generic;
- c->scanline = scanline;
- return;
-#endif
-
- //printf("*** needs [%08lx:%08lx:%08lx:%08lx]\n",
- // c->state.needs.n, c->state.needs.p,
- // c->state.needs.t[0], c->state.needs.t[1]);
-
- // first handle the special case that we cannot test with a filter
- const uint32_t cb_format = GGL_READ_NEEDS(CB_FORMAT, c->state.needs.n);
- if (GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0]) == cb_format) {
- if (c->state.needs.match(noblend1to1)) {
- // this will match regardless of dithering state, since both
- // src and dest have the same format anyway, there is no dithering
- // to be done.
- const GGLFormat* f =
- &(c->formats[GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0])]);
- if ((f->components == GGL_RGB) ||
- (f->components == GGL_RGBA) ||
- (f->components == GGL_LUMINANCE) ||
- (f->components == GGL_LUMINANCE_ALPHA))
- {
- // format must have all of RGB components
- // (so the current color doesn't show through)
- c->scanline = scanline_memcpy;
- c->init_y = init_y_noop;
- return;
- }
- }
- }
-
- if (c->state.needs.match(fill16noblend)) {
- c->init_y = init_y_packed;
- switch (c->formats[cb_format].size) {
- case 1: c->scanline = scanline_memset8; return;
- case 2: c->scanline = scanline_memset16; return;
- case 4: c->scanline = scanline_memset32; return;
- }
- }
-
- const int numFilters = sizeof(shortcuts)/sizeof(shortcut_t);
- for (int i=0 ; i<numFilters ; i++) {
- if (c->state.needs.match(shortcuts[i].filter)) {
- c->scanline = shortcuts[i].scanline;
- c->init_y = shortcuts[i].init_y;
- return;
- }
- }
-
-#endif // DEBUG__CODEGEN_ONLY
-
- c->init_y = init_y;
- c->step_y = step_y__generic;
-
-#if ANDROID_ARM_CODEGEN
- // we're going to have to generate some code...
- // here, generate code for our pixel pipeline
- const AssemblyKey<needs_t> key(c->state.needs);
- sp<Assembly> assembly = gCodeCache.lookup(key);
- if (assembly == 0) {
- // create a new assembly region
- sp<ScanlineAssembly> a = new ScanlineAssembly(c->state.needs,
- ASSEMBLY_SCRATCH_SIZE);
- // initialize our assembler
- GGLAssembler assembler( new ARMAssembler(a) );
- //GGLAssembler assembler(
- // new ARMAssemblerOptimizer(new ARMAssembler(a)) );
- // generate the scanline code for the given needs
- int err = assembler.scanline(c->state.needs, c);
- if (ggl_likely(!err)) {
- // finally, cache this assembly
- err = gCodeCache.cache(a->key(), a);
- }
- if (ggl_unlikely(err)) {
- LOGE("error generating or caching assembly. Reverting to NOP.");
- c->scanline = scanline_noop;
- c->init_y = init_y_noop;
- c->step_y = step_y__nop;
- return;
- }
- assembly = a;
- }
-
- // release the previous assembly
- if (c->scanline_as) {
- c->scanline_as->decStrong(c);
- }
-
- //LOGI("using generated pixel-pipeline");
- c->scanline_as = assembly.get();
- c->scanline_as->incStrong(c); // hold on to assembly
- c->scanline = (void(*)(context_t* c))assembly->base();
-#else
-// LOGW("using generic (slow) pixel-pipeline");
- c->scanline = scanline;
-#endif
-}
-
-void ggl_pick_scanline(context_t* c)
-{
- pick_scanline(c);
- if ((c->state.enables & GGL_ENABLE_W) &&
- (c->state.enables & GGL_ENABLE_TMUS))
- {
- c->span = c->scanline;
- c->scanline = scanline_perspective;
- if (!(c->state.enabled_tmu & (c->state.enabled_tmu - 1))) {
- // only one TMU enabled
- c->scanline = scanline_perspective_single;
- }
- }
-}
-
-// ----------------------------------------------------------------------------
-
-static void blending(context_t* c, pixel_t* fragment, pixel_t* fb);
-static void blend_factor(context_t* c, pixel_t* r, uint32_t factor,
- const pixel_t* src, const pixel_t* dst);
-static void rescale(uint32_t& u, uint8_t& su, uint32_t& v, uint8_t& sv);
-
-#if ANDROID_ARM_CODEGEN && (ANDROID_CODEGEN == ANDROID_CODEGEN_GENERATED)
-
-// no need to compile the generic-pipeline, it can't be reached
-void scanline(context_t*)
-{
-}
-
-#else
-
-void rescale(uint32_t& u, uint8_t& su, uint32_t& v, uint8_t& sv)
-{
- if (su && sv) {
- if (su > sv) {
- v = ggl_expand(v, sv, su);
- sv = su;
- } else if (su < sv) {
- u = ggl_expand(u, su, sv);
- su = sv;
- }
- }
-}
-
-void blending(context_t* c, pixel_t* fragment, pixel_t* fb)
-{
- rescale(fragment->c[0], fragment->s[0], fb->c[0], fb->s[0]);
- rescale(fragment->c[1], fragment->s[1], fb->c[1], fb->s[1]);
- rescale(fragment->c[2], fragment->s[2], fb->c[2], fb->s[2]);
- rescale(fragment->c[3], fragment->s[3], fb->c[3], fb->s[3]);
-
- pixel_t sf, df;
- blend_factor(c, &sf, c->state.blend.src, fragment, fb);
- blend_factor(c, &df, c->state.blend.dst, fragment, fb);
-
- fragment->c[1] =
- gglMulAddx(fragment->c[1], sf.c[1], gglMulx(fb->c[1], df.c[1]));
- fragment->c[2] =
- gglMulAddx(fragment->c[2], sf.c[2], gglMulx(fb->c[2], df.c[2]));
- fragment->c[3] =
- gglMulAddx(fragment->c[3], sf.c[3], gglMulx(fb->c[3], df.c[3]));
-
- if (c->state.blend.alpha_separate) {
- blend_factor(c, &sf, c->state.blend.src_alpha, fragment, fb);
- blend_factor(c, &df, c->state.blend.dst_alpha, fragment, fb);
- }
-
- fragment->c[0] =
- gglMulAddx(fragment->c[0], sf.c[0], gglMulx(fb->c[0], df.c[0]));
-
- // clamp to 1.0
- if (fragment->c[0] >= (1LU<<fragment->s[0]))
- fragment->c[0] = (1<<fragment->s[0])-1;
- if (fragment->c[1] >= (1LU<<fragment->s[1]))
- fragment->c[1] = (1<<fragment->s[1])-1;
- if (fragment->c[2] >= (1LU<<fragment->s[2]))
- fragment->c[2] = (1<<fragment->s[2])-1;
- if (fragment->c[3] >= (1LU<<fragment->s[3]))
- fragment->c[3] = (1<<fragment->s[3])-1;
-}
-
-static inline int blendfactor(uint32_t x, uint32_t size, uint32_t def = 0)
-{
- if (!size)
- return def;
-
- // scale to 16 bits
- if (size > 16) {
- x >>= (size - 16);
- } else if (size < 16) {
- x = ggl_expand(x, size, 16);
- }
- x += x >> 15;
- return x;
-}
-
-void blend_factor(context_t* c, pixel_t* r,
- uint32_t factor, const pixel_t* src, const pixel_t* dst)
-{
- switch (factor) {
- case GGL_ZERO:
- r->c[1] =
- r->c[2] =
- r->c[3] =
- r->c[0] = 0;
- break;
- case GGL_ONE:
- r->c[1] =
- r->c[2] =
- r->c[3] =
- r->c[0] = FIXED_ONE;
- break;
- case GGL_DST_COLOR:
- r->c[1] = blendfactor(dst->c[1], dst->s[1]);
- r->c[2] = blendfactor(dst->c[2], dst->s[2]);
- r->c[3] = blendfactor(dst->c[3], dst->s[3]);
- r->c[0] = blendfactor(dst->c[0], dst->s[0]);
- break;
- case GGL_SRC_COLOR:
- r->c[1] = blendfactor(src->c[1], src->s[1]);
- r->c[2] = blendfactor(src->c[2], src->s[2]);
- r->c[3] = blendfactor(src->c[3], src->s[3]);
- r->c[0] = blendfactor(src->c[0], src->s[0]);
- break;
- case GGL_ONE_MINUS_DST_COLOR:
- r->c[1] = FIXED_ONE - blendfactor(dst->c[1], dst->s[1]);
- r->c[2] = FIXED_ONE - blendfactor(dst->c[2], dst->s[2]);
- r->c[3] = FIXED_ONE - blendfactor(dst->c[3], dst->s[3]);
- r->c[0] = FIXED_ONE - blendfactor(dst->c[0], dst->s[0]);
- break;
- case GGL_ONE_MINUS_SRC_COLOR:
- r->c[1] = FIXED_ONE - blendfactor(src->c[1], src->s[1]);
- r->c[2] = FIXED_ONE - blendfactor(src->c[2], src->s[2]);
- r->c[3] = FIXED_ONE - blendfactor(src->c[3], src->s[3]);
- r->c[0] = FIXED_ONE - blendfactor(src->c[0], src->s[0]);
- break;
- case GGL_SRC_ALPHA:
- r->c[1] =
- r->c[2] =
- r->c[3] =
- r->c[0] = blendfactor(src->c[0], src->s[0], FIXED_ONE);
- break;
- case GGL_ONE_MINUS_SRC_ALPHA:
- r->c[1] =
- r->c[2] =
- r->c[3] =
- r->c[0] = FIXED_ONE - blendfactor(src->c[0], src->s[0], FIXED_ONE);
- break;
- case GGL_DST_ALPHA:
- r->c[1] =
- r->c[2] =
- r->c[3] =
- r->c[0] = blendfactor(dst->c[0], dst->s[0], FIXED_ONE);
- break;
- case GGL_ONE_MINUS_DST_ALPHA:
- r->c[1] =
- r->c[2] =
- r->c[3] =
- r->c[0] = FIXED_ONE - blendfactor(dst->c[0], dst->s[0], FIXED_ONE);
- break;
- case GGL_SRC_ALPHA_SATURATE:
- // XXX: GGL_SRC_ALPHA_SATURATE
- break;
- }
-}
-
-static GGLfixed wrapping(int32_t coord, uint32_t size, int tx_wrap)
-{
- GGLfixed d;
- if (tx_wrap == GGL_REPEAT) {
- d = (uint32_t(coord)>>16) * size;
- } else if (tx_wrap == GGL_CLAMP) { // CLAMP_TO_EDGE semantics
- const GGLfixed clamp_min = FIXED_HALF;
- const GGLfixed clamp_max = (size << 16) - FIXED_HALF;
- if (coord < clamp_min) coord = clamp_min;
- if (coord > clamp_max) coord = clamp_max;
- d = coord;
- } else { // 1:1
- const GGLfixed clamp_min = 0;
- const GGLfixed clamp_max = (size << 16);
- if (coord < clamp_min) coord = clamp_min;
- if (coord > clamp_max) coord = clamp_max;
- d = coord;
- }
- return d;
-}
-
-static inline
-GGLcolor ADJUST_COLOR_ITERATOR(GGLcolor v, GGLcolor dvdx, int len)
-{
- const int32_t end = dvdx * (len-1) + v;
- if (end < 0)
- v -= end;
- v &= ~(v>>31);
- return v;
-}
-
-void scanline(context_t* c)
-{
- const uint32_t enables = c->state.enables;
- const int xs = c->iterators.xl;
- const int x1 = c->iterators.xr;
- int xc = x1 - xs;
- const int16_t* covPtr = c->state.buffers.coverage + xs;
-
- // All iterated values are sampled at the pixel center
-
- // reset iterators for that scanline...
- GGLcolor r, g, b, a;
- iterators_t& ci = c->iterators;
- if (enables & GGL_ENABLE_SMOOTH) {
- r = (xs * c->shade.drdx) + ci.ydrdy;
- g = (xs * c->shade.dgdx) + ci.ydgdy;
- b = (xs * c->shade.dbdx) + ci.ydbdy;
- a = (xs * c->shade.dadx) + ci.ydady;
- r = ADJUST_COLOR_ITERATOR(r, c->shade.drdx, xc);
- g = ADJUST_COLOR_ITERATOR(g, c->shade.dgdx, xc);
- b = ADJUST_COLOR_ITERATOR(b, c->shade.dbdx, xc);
- a = ADJUST_COLOR_ITERATOR(a, c->shade.dadx, xc);
- } else {
- r = ci.ydrdy;
- g = ci.ydgdy;
- b = ci.ydbdy;
- a = ci.ydady;
- }
-
- // z iterators are 1.31
- GGLfixed z = (xs * c->shade.dzdx) + ci.ydzdy;
- GGLfixed f = (xs * c->shade.dfdx) + ci.ydfdy;
-
- struct {
- GGLfixed s, t;
- } tc[GGL_TEXTURE_UNIT_COUNT];
- if (enables & GGL_ENABLE_TMUS) {
- for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
- if (c->state.texture[i].enable) {
- texture_iterators_t& ti = c->state.texture[i].iterators;
- if (enables & GGL_ENABLE_W) {
- tc[i].s = ti.ydsdy;
- tc[i].t = ti.ydtdy;
- } else {
- tc[i].s = (xs * ti.dsdx) + ti.ydsdy;
- tc[i].t = (xs * ti.dtdx) + ti.ydtdy;
- }
- }
- }
- }
-
- pixel_t fragment;
- pixel_t texel;
- pixel_t fb;
-
- uint32_t x = xs;
- uint32_t y = c->iterators.y;
-
- while (xc--) {
-
- { // just a scope
-
- // read color (convert to 8 bits by keeping only the integer part)
- fragment.s[1] = fragment.s[2] =
- fragment.s[3] = fragment.s[0] = 8;
- fragment.c[1] = r >> (GGL_COLOR_BITS-8);
- fragment.c[2] = g >> (GGL_COLOR_BITS-8);
- fragment.c[3] = b >> (GGL_COLOR_BITS-8);
- fragment.c[0] = a >> (GGL_COLOR_BITS-8);
-
- // texturing
- if (enables & GGL_ENABLE_TMUS) {
- for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
- texture_t& tx = c->state.texture[i];
- if (!tx.enable)
- continue;
- texture_iterators_t& ti = tx.iterators;
- int32_t u, v;
-
- // s-coordinate
- if (tx.s_coord != GGL_ONE_TO_ONE) {
- const int w = tx.surface.width;
- u = wrapping(tc[i].s, w, tx.s_wrap);
- tc[i].s += ti.dsdx;
- } else {
- u = (((tx.shade.is0>>16) + x)<<16) + FIXED_HALF;
- }
-
- // t-coordinate
- if (tx.t_coord != GGL_ONE_TO_ONE) {
- const int h = tx.surface.height;
- v = wrapping(tc[i].t, h, tx.t_wrap);
- tc[i].t += ti.dtdx;
- } else {
- v = (((tx.shade.it0>>16) + y)<<16) + FIXED_HALF;
- }
-
- // read texture
- if (tx.mag_filter == GGL_NEAREST &&
- tx.min_filter == GGL_NEAREST)
- {
- u >>= 16;
- v >>= 16;
- tx.surface.read(&tx.surface, c, u, v, &texel);
- } else {
- const int w = tx.surface.width;
- const int h = tx.surface.height;
- u -= FIXED_HALF;
- v -= FIXED_HALF;
- int u0 = u >> 16;
- int v0 = v >> 16;
- int u1 = u0 + 1;
- int v1 = v0 + 1;
- if (tx.s_wrap == GGL_REPEAT) {
- if (u0<0) u0 += w;
- if (u1<0) u1 += w;
- if (u0>=w) u0 -= w;
- if (u1>=w) u1 -= w;
- } else {
- if (u0<0) u0 = 0;
- if (u1<0) u1 = 0;
- if (u0>=w) u0 = w-1;
- if (u1>=w) u1 = w-1;
- }
- if (tx.t_wrap == GGL_REPEAT) {
- if (v0<0) v0 += h;
- if (v1<0) v1 += h;
- if (v0>=h) v0 -= h;
- if (v1>=h) v1 -= h;
- } else {
- if (v0<0) v0 = 0;
- if (v1<0) v1 = 0;
- if (v0>=h) v0 = h-1;
- if (v1>=h) v1 = h-1;
- }
- pixel_t texels[4];
- uint32_t mm[4];
- tx.surface.read(&tx.surface, c, u0, v0, &texels[0]);
- tx.surface.read(&tx.surface, c, u0, v1, &texels[1]);
- tx.surface.read(&tx.surface, c, u1, v0, &texels[2]);
- tx.surface.read(&tx.surface, c, u1, v1, &texels[3]);
- u = (u >> 12) & 0xF;
- v = (v >> 12) & 0xF;
- u += u>>3;
- v += v>>3;
- mm[0] = (0x10 - u) * (0x10 - v);
- mm[1] = (0x10 - u) * v;
- mm[2] = u * (0x10 - v);
- mm[3] = 0x100 - (mm[0] + mm[1] + mm[2]);
- for (int j=0 ; j<4 ; j++) {
- texel.s[j] = texels[0].s[j];
- if (!texel.s[j]) continue;
- texel.s[j] += 8;
- texel.c[j] = texels[0].c[j]*mm[0] +
- texels[1].c[j]*mm[1] +
- texels[2].c[j]*mm[2] +
- texels[3].c[j]*mm[3] ;
- }
- }
-
- // Texture environnement...
- for (int j=0 ; j<4 ; j++) {
- uint32_t& Cf = fragment.c[j];
- uint32_t& Ct = texel.c[j];
- uint8_t& sf = fragment.s[j];
- uint8_t& st = texel.s[j];
- uint32_t At = texel.c[0];
- uint8_t sat = texel.s[0];
- switch (tx.env) {
- case GGL_REPLACE:
- if (st) {
- Cf = Ct;
- sf = st;
- }
- break;
- case GGL_MODULATE:
- if (st) {
- uint32_t factor = Ct + (Ct>>(st-1));
- Cf = (Cf * factor) >> st;
- }
- break;
- case GGL_DECAL:
- if (sat) {
- rescale(Cf, sf, Ct, st);
- Cf += ((Ct - Cf) * (At + (At>>(sat-1)))) >> sat;
- }
- break;
- case GGL_BLEND:
- if (st) {
- uint32_t Cc = tx.env_color[i];
- if (sf>8) Cc = (Cc * ((1<<sf)-1))>>8;
- else if (sf<8) Cc = (Cc - (Cc>>(8-sf)))>>(8-sf);
- uint32_t factor = Ct + (Ct>>(st-1));
- Cf = ((((1<<st) - factor) * Cf) + Ct*Cc)>>st;
- }
- break;
- case GGL_ADD:
- if (st) {
- rescale(Cf, sf, Ct, st);
- Cf += Ct;
- }
- break;
- }
- }
- }
- }
-
- // coverage application
- if (enables & GGL_ENABLE_AA) {
- int16_t cf = *covPtr++;
- fragment.c[0] = (int64_t(fragment.c[0]) * cf) >> 15;
- }
-
- // alpha-test
- if (enables & GGL_ENABLE_ALPHA_TEST) {
- GGLcolor ref = c->state.alpha_test.ref;
- GGLcolor alpha = (uint64_t(fragment.c[0]) *
- ((1<<GGL_COLOR_BITS)-1)) / ((1<<fragment.s[0])-1);
- switch (c->state.alpha_test.func) {
- case GGL_NEVER: goto discard;
- case GGL_LESS: if (alpha<ref) break; goto discard;
- case GGL_EQUAL: if (alpha==ref) break; goto discard;
- case GGL_LEQUAL: if (alpha<=ref) break; goto discard;
- case GGL_GREATER: if (alpha>ref) break; goto discard;
- case GGL_NOTEQUAL: if (alpha!=ref) break; goto discard;
- case GGL_GEQUAL: if (alpha>=ref) break; goto discard;
- }
- }
-
- // depth test
- if (c->state.buffers.depth.format) {
- if (enables & GGL_ENABLE_DEPTH_TEST) {
- surface_t* cb = &(c->state.buffers.depth);
- uint16_t* p = (uint16_t*)(cb->data)+(x+(cb->stride*y));
- uint16_t zz = uint32_t(z)>>(16);
- uint16_t depth = *p;
- switch (c->state.depth_test.func) {
- case GGL_NEVER: goto discard;
- case GGL_LESS: if (zz<depth) break; goto discard;
- case GGL_EQUAL: if (zz==depth) break; goto discard;
- case GGL_LEQUAL: if (zz<=depth) break; goto discard;
- case GGL_GREATER: if (zz>depth) break; goto discard;
- case GGL_NOTEQUAL: if (zz!=depth) break; goto discard;
- case GGL_GEQUAL: if (zz>=depth) break; goto discard;
- }
- // depth buffer is not enabled, if depth-test is not enabled
-/*
- fragment.s[1] = fragment.s[2] =
- fragment.s[3] = fragment.s[0] = 8;
- fragment.c[1] =
- fragment.c[2] =
- fragment.c[3] =
- fragment.c[0] = 255 - (zz>>8);
-*/
- if (c->state.mask.depth) {
- *p = zz;
- }
- }
- }
-
- // fog
- if (enables & GGL_ENABLE_FOG) {
- for (int i=1 ; i<=3 ; i++) {
- GGLfixed fc = (c->state.fog.color[i] * 0x10000) / 0xFF;
- uint32_t& c = fragment.c[i];
- uint8_t& s = fragment.s[i];
- c = (c * 0x10000) / ((1<<s)-1);
- c = gglMulAddx(c, f, gglMulx(fc, 0x10000 - f));
- s = 16;
- }
- }
-
- // blending
- if (enables & GGL_ENABLE_BLENDING) {
- fb.c[1] = fb.c[2] = fb.c[3] = fb.c[0] = 0; // placate valgrind
- fb.s[1] = fb.s[2] = fb.s[3] = fb.s[0] = 0;
- c->state.buffers.color.read(
- &(c->state.buffers.color), c, x, y, &fb);
- blending( c, &fragment, &fb );
- }
-
- // write
- c->state.buffers.color.write(
- &(c->state.buffers.color), c, x, y, &fragment);
- }
-
-discard:
- // iterate...
- x += 1;
- if (enables & GGL_ENABLE_SMOOTH) {
- r += c->shade.drdx;
- g += c->shade.dgdx;
- b += c->shade.dbdx;
- a += c->shade.dadx;
- }
- z += c->shade.dzdx;
- f += c->shade.dfdx;
- }
-}
-
-#endif // ANDROID_ARM_CODEGEN && (ANDROID_CODEGEN == ANDROID_CODEGEN_GENERATED)
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Scanline
-#endif
-
-template <typename T, typename U>
-static inline __attribute__((const))
-T interpolate(int y, T v0, U dvdx, U dvdy) {
- // interpolates in pixel's centers
- // v = v0 + (y + 0.5) * dvdy + (0.5 * dvdx)
- return (y * dvdy) + (v0 + ((dvdy + dvdx) >> 1));
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-void init_y(context_t* c, int32_t ys)
-{
- const uint32_t enables = c->state.enables;
-
- // compute iterators...
- iterators_t& ci = c->iterators;
-
- // sample in the center
- ci.y = ys;
-
- if (enables & (GGL_ENABLE_DEPTH_TEST|GGL_ENABLE_W|GGL_ENABLE_FOG)) {
- ci.ydzdy = interpolate(ys, c->shade.z0, c->shade.dzdx, c->shade.dzdy);
- ci.ydwdy = interpolate(ys, c->shade.w0, c->shade.dwdx, c->shade.dwdy);
- ci.ydfdy = interpolate(ys, c->shade.f0, c->shade.dfdx, c->shade.dfdy);
- }
-
- if (ggl_unlikely(enables & GGL_ENABLE_SMOOTH)) {
- ci.ydrdy = interpolate(ys, c->shade.r0, c->shade.drdx, c->shade.drdy);
- ci.ydgdy = interpolate(ys, c->shade.g0, c->shade.dgdx, c->shade.dgdy);
- ci.ydbdy = interpolate(ys, c->shade.b0, c->shade.dbdx, c->shade.dbdy);
- ci.ydady = interpolate(ys, c->shade.a0, c->shade.dadx, c->shade.dady);
- c->step_y = step_y__smooth;
- } else {
- ci.ydrdy = c->shade.r0;
- ci.ydgdy = c->shade.g0;
- ci.ydbdy = c->shade.b0;
- ci.ydady = c->shade.a0;
- // XXX: do only if needed, or make sure this is fast
- c->packed = ggl_pack_color(c, c->state.buffers.color.format,
- ci.ydrdy, ci.ydgdy, ci.ydbdy, ci.ydady);
- c->packed8888 = ggl_pack_color(c, GGL_PIXEL_FORMAT_RGBA_8888,
- ci.ydrdy, ci.ydgdy, ci.ydbdy, ci.ydady);
- }
-
- // initialize the variables we need in the shader
- generated_vars_t& gen = c->generated_vars;
- gen.argb[GGLFormat::ALPHA].c = ci.ydady;
- gen.argb[GGLFormat::ALPHA].dx = c->shade.dadx;
- gen.argb[GGLFormat::RED ].c = ci.ydrdy;
- gen.argb[GGLFormat::RED ].dx = c->shade.drdx;
- gen.argb[GGLFormat::GREEN].c = ci.ydgdy;
- gen.argb[GGLFormat::GREEN].dx = c->shade.dgdx;
- gen.argb[GGLFormat::BLUE ].c = ci.ydbdy;
- gen.argb[GGLFormat::BLUE ].dx = c->shade.dbdx;
- gen.dzdx = c->shade.dzdx;
- gen.f = ci.ydfdy;
- gen.dfdx = c->shade.dfdx;
-
- if (enables & GGL_ENABLE_TMUS) {
- for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
- texture_t& t = c->state.texture[i];
- if (!t.enable) continue;
-
- texture_iterators_t& ti = t.iterators;
- if (t.s_coord == GGL_ONE_TO_ONE && t.t_coord == GGL_ONE_TO_ONE) {
- // we need to set all of these to 0 because in some cases
- // step_y__generic() or step_y__tmu() will be used and
- // therefore will update dtdy, however, in 1:1 mode
- // this is always done by the scanline rasterizer.
- ti.dsdx = ti.dsdy = ti.dtdx = ti.dtdy = 0;
- ti.ydsdy = t.shade.is0;
- ti.ydtdy = t.shade.it0;
- } else {
- const int adjustSWrap = ((t.s_wrap==GGL_CLAMP)?0:16);
- const int adjustTWrap = ((t.t_wrap==GGL_CLAMP)?0:16);
- ti.sscale = t.shade.sscale + adjustSWrap;
- ti.tscale = t.shade.tscale + adjustTWrap;
- if (!(enables & GGL_ENABLE_W)) {
- // S coordinate
- const int32_t sscale = ti.sscale;
- const int32_t sy = interpolate(ys,
- t.shade.is0, t.shade.idsdx, t.shade.idsdy);
- if (sscale>=0) {
- ti.ydsdy= sy << sscale;
- ti.dsdx = t.shade.idsdx << sscale;
- ti.dsdy = t.shade.idsdy << sscale;
- } else {
- ti.ydsdy= sy >> -sscale;
- ti.dsdx = t.shade.idsdx >> -sscale;
- ti.dsdy = t.shade.idsdy >> -sscale;
- }
- // T coordinate
- const int32_t tscale = ti.tscale;
- const int32_t ty = interpolate(ys,
- t.shade.it0, t.shade.idtdx, t.shade.idtdy);
- if (tscale>=0) {
- ti.ydtdy= ty << tscale;
- ti.dtdx = t.shade.idtdx << tscale;
- ti.dtdy = t.shade.idtdy << tscale;
- } else {
- ti.ydtdy= ty >> -tscale;
- ti.dtdx = t.shade.idtdx >> -tscale;
- ti.dtdy = t.shade.idtdy >> -tscale;
- }
- }
- }
- // mirror for generated code...
- generated_tex_vars_t& gen = c->generated_vars.texture[i];
- gen.width = t.surface.width;
- gen.height = t.surface.height;
- gen.stride = t.surface.stride;
- gen.data = int32_t(t.surface.data);
- gen.dsdx = ti.dsdx;
- gen.dtdx = ti.dtdx;
- }
- }
-
- // choose the y-stepper
- c->step_y = step_y__nop;
- if (enables & GGL_ENABLE_FOG) {
- c->step_y = step_y__generic;
- } else if (enables & GGL_ENABLE_TMUS) {
- if (enables & GGL_ENABLE_SMOOTH) {
- c->step_y = step_y__generic;
- } else if (enables & GGL_ENABLE_W) {
- c->step_y = step_y__w;
- } else {
- c->step_y = step_y__tmu;
- }
- } else {
- if (enables & GGL_ENABLE_SMOOTH) {
- c->step_y = step_y__smooth;
- }
- }
-
- // choose the rectangle blitter
- c->rect = rect_generic;
- if ((c->step_y == step_y__nop) &&
- (c->scanline == scanline_memcpy))
- {
- c->rect = rect_memcpy;
- }
-}
-
-void init_y_packed(context_t* c, int32_t y0)
-{
- uint8_t f = c->state.buffers.color.format;
- c->packed = ggl_pack_color(c, f,
- c->shade.r0, c->shade.g0, c->shade.b0, c->shade.a0);
- c->iterators.y = y0;
- c->step_y = step_y__nop;
- // choose the rectangle blitter
- c->rect = rect_generic;
- if (c->scanline == scanline_memcpy) {
- c->rect = rect_memcpy;
- }
-}
-
-void init_y_noop(context_t* c, int32_t y0)
-{
- c->iterators.y = y0;
- c->step_y = step_y__nop;
- // choose the rectangle blitter
- c->rect = rect_generic;
- if (c->scanline == scanline_memcpy) {
- c->rect = rect_memcpy;
- }
-}
-
-void init_y_error(context_t* c, int32_t y0)
-{
- // woooops, shoud never happen,
- // fail gracefully (don't display anything)
- init_y_noop(c, y0);
- LOGE("color-buffer has an invalid format!");
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-void step_y__generic(context_t* c)
-{
- const uint32_t enables = c->state.enables;
-
- // iterate...
- iterators_t& ci = c->iterators;
- ci.y += 1;
-
- if (enables & GGL_ENABLE_SMOOTH) {
- ci.ydrdy += c->shade.drdy;
- ci.ydgdy += c->shade.dgdy;
- ci.ydbdy += c->shade.dbdy;
- ci.ydady += c->shade.dady;
- }
-
- const uint32_t mask =
- GGL_ENABLE_DEPTH_TEST |
- GGL_ENABLE_W |
- GGL_ENABLE_FOG;
- if (enables & mask) {
- ci.ydzdy += c->shade.dzdy;
- ci.ydwdy += c->shade.dwdy;
- ci.ydfdy += c->shade.dfdy;
- }
-
- if ((enables & GGL_ENABLE_TMUS) && (!(enables & GGL_ENABLE_W))) {
- for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
- if (c->state.texture[i].enable) {
- texture_iterators_t& ti = c->state.texture[i].iterators;
- ti.ydsdy += ti.dsdy;
- ti.ydtdy += ti.dtdy;
- }
- }
- }
-}
-
-void step_y__nop(context_t* c)
-{
- c->iterators.y += 1;
- c->iterators.ydzdy += c->shade.dzdy;
-}
-
-void step_y__smooth(context_t* c)
-{
- iterators_t& ci = c->iterators;
- ci.y += 1;
- ci.ydrdy += c->shade.drdy;
- ci.ydgdy += c->shade.dgdy;
- ci.ydbdy += c->shade.dbdy;
- ci.ydady += c->shade.dady;
- ci.ydzdy += c->shade.dzdy;
-}
-
-void step_y__w(context_t* c)
-{
- iterators_t& ci = c->iterators;
- ci.y += 1;
- ci.ydzdy += c->shade.dzdy;
- ci.ydwdy += c->shade.dwdy;
-}
-
-void step_y__tmu(context_t* c)
-{
- iterators_t& ci = c->iterators;
- ci.y += 1;
- ci.ydzdy += c->shade.dzdy;
- for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
- if (c->state.texture[i].enable) {
- texture_iterators_t& ti = c->state.texture[i].iterators;
- ti.ydsdy += ti.dsdy;
- ti.ydtdy += ti.dtdy;
- }
- }
-}
-
-// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#endif
-
-void scanline_perspective(context_t* c)
-{
- struct {
- union {
- struct {
- int32_t s, sq;
- int32_t t, tq;
- };
- struct {
- int32_t v, q;
- } st[2];
- };
- } tc[GGL_TEXTURE_UNIT_COUNT] __attribute__((aligned(16)));
-
- // XXX: we should have a special case when dwdx = 0
-
- // 32 pixels spans works okay. 16 is a lot better,
- // but hey, it's a software renderer...
- const uint32_t SPAN_BITS = 5;
- const uint32_t ys = c->iterators.y;
- const uint32_t xs = c->iterators.xl;
- const uint32_t x1 = c->iterators.xr;
- const uint32_t xc = x1 - xs;
- uint32_t remainder = xc & ((1<<SPAN_BITS)-1);
- uint32_t numSpans = xc >> SPAN_BITS;
-
- const iterators_t& ci = c->iterators;
- int32_t w0 = (xs * c->shade.dwdx) + ci.ydwdy;
- int32_t q0 = gglRecipQ(w0, 30);
- const int iwscale = 32 - gglClz(q0);
-
- const int32_t dwdx = c->shade.dwdx << SPAN_BITS;
- int32_t xl = c->iterators.xl;
-
- // We process s & t with a loop to reduce the code size
- // (and i-cache pressure).
-
- for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
- const texture_t& tmu = c->state.texture[i];
- if (!tmu.enable) continue;
- int32_t s = tmu.shade.is0 +
- (tmu.shade.idsdy * ys) + (tmu.shade.idsdx * xs) +
- ((tmu.shade.idsdx + tmu.shade.idsdy)>>1);
- int32_t t = tmu.shade.it0 +
- (tmu.shade.idtdy * ys) + (tmu.shade.idtdx * xs) +
- ((tmu.shade.idtdx + tmu.shade.idtdy)>>1);
- tc[i].s = s;
- tc[i].t = t;
- tc[i].sq = gglMulx(s, q0, iwscale);
- tc[i].tq = gglMulx(t, q0, iwscale);
- }
-
- int32_t span = 0;
- do {
- int32_t w1;
- if (ggl_likely(numSpans)) {
- w1 = w0 + dwdx;
- } else {
- if (remainder) {
- // finish off the scanline...
- span = remainder;
- w1 = (c->shade.dwdx * span) + w0;
- } else {
- break;
- }
- }
- int32_t q1 = gglRecipQ(w1, 30);
- for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) {
- texture_t& tmu = c->state.texture[i];
- if (!tmu.enable) continue;
- texture_iterators_t& ti = tmu.iterators;
-
- for (int j=0 ; j<2 ; j++) {
- int32_t v = tc[i].st[j].v;
- if (span) v += (tmu.shade.st[j].dx)*span;
- else v += (tmu.shade.st[j].dx)<<SPAN_BITS;
- const int32_t v0 = tc[i].st[j].q;
- const int32_t v1 = gglMulx(v, q1, iwscale);
- int32_t dvdx = v1 - v0;
- if (span) dvdx /= span;
- else dvdx >>= SPAN_BITS;
- tc[i].st[j].v = v;
- tc[i].st[j].q = v1;
-
- const int scale = ti.st[j].scale + (iwscale - 30);
- if (scale >= 0) {
- ti.st[j].ydvdy = v0 << scale;
- ti.st[j].dvdx = dvdx << scale;
- } else {
- ti.st[j].ydvdy = v0 >> -scale;
- ti.st[j].dvdx = dvdx >> -scale;
- }
- }
- generated_tex_vars_t& gen = c->generated_vars.texture[i];
- gen.dsdx = ti.st[0].dvdx;
- gen.dtdx = ti.st[1].dvdx;
- }
- c->iterators.xl = xl;
- c->iterators.xr = xl = xl + (span ? span : (1<<SPAN_BITS));
- w0 = w1;
- q0 = q1;
- c->span(c);
- } while(numSpans--);
-}
-
-void scanline_perspective_single(context_t* c)
-{
- // 32 pixels spans works okay. 16 is a lot better,
- // but hey, it's a software renderer...
- const uint32_t SPAN_BITS = 5;
- const uint32_t ys = c->iterators.y;
- const uint32_t xs = c->iterators.xl;
- const uint32_t x1 = c->iterators.xr;
- const uint32_t xc = x1 - xs;
-
- const iterators_t& ci = c->iterators;
- int32_t w = (xs * c->shade.dwdx) + ci.ydwdy;
- int32_t iw = gglRecipQ(w, 30);
- const int iwscale = 32 - gglClz(iw);
-
- const int i = 31 - gglClz(c->state.enabled_tmu);
- generated_tex_vars_t& gen = c->generated_vars.texture[i];
- texture_t& tmu = c->state.texture[i];
- texture_iterators_t& ti = tmu.iterators;
- const int sscale = ti.sscale + (iwscale - 30);
- const int tscale = ti.tscale + (iwscale - 30);
- int32_t s = tmu.shade.is0 +
- (tmu.shade.idsdy * ys) + (tmu.shade.idsdx * xs) +
- ((tmu.shade.idsdx + tmu.shade.idsdy)>>1);
- int32_t t = tmu.shade.it0 +
- (tmu.shade.idtdy * ys) + (tmu.shade.idtdx * xs) +
- ((tmu.shade.idtdx + tmu.shade.idtdy)>>1);
- int32_t s0 = gglMulx(s, iw, iwscale);
- int32_t t0 = gglMulx(t, iw, iwscale);
- int32_t xl = c->iterators.xl;
-
- int32_t sq, tq, dsdx, dtdx;
- int32_t premainder = xc & ((1<<SPAN_BITS)-1);
- uint32_t numSpans = xc >> SPAN_BITS;
- if (c->shade.dwdx == 0) {
- // XXX: we could choose to do this if the error is small enough
- numSpans = 0;
- premainder = xc;
- goto no_perspective;
- }
-
- if (premainder) {
- w += c->shade.dwdx * premainder;
- iw = gglRecipQ(w, 30);
-no_perspective:
- s += tmu.shade.idsdx * premainder;
- t += tmu.shade.idtdx * premainder;
- sq = gglMulx(s, iw, iwscale);
- tq = gglMulx(t, iw, iwscale);
- dsdx = (sq - s0) / premainder;
- dtdx = (tq - t0) / premainder;
- c->iterators.xl = xl;
- c->iterators.xr = xl = xl + premainder;
- goto finish;
- }
-
- while (numSpans--) {
- w += c->shade.dwdx << SPAN_BITS;
- s += tmu.shade.idsdx << SPAN_BITS;
- t += tmu.shade.idtdx << SPAN_BITS;
- iw = gglRecipQ(w, 30);
- sq = gglMulx(s, iw, iwscale);
- tq = gglMulx(t, iw, iwscale);
- dsdx = (sq - s0) >> SPAN_BITS;
- dtdx = (tq - t0) >> SPAN_BITS;
- c->iterators.xl = xl;
- c->iterators.xr = xl = xl + (1<<SPAN_BITS);
-finish:
- if (sscale >= 0) {
- ti.ydsdy = s0 << sscale;
- ti.dsdx = dsdx << sscale;
- } else {
- ti.ydsdy = s0 >>-sscale;
- ti.dsdx = dsdx >>-sscale;
- }
- if (tscale >= 0) {
- ti.ydtdy = t0 << tscale;
- ti.dtdx = dtdx << tscale;
- } else {
- ti.ydtdy = t0 >>-tscale;
- ti.dtdx = dtdx >>-tscale;
- }
- s0 = sq;
- t0 = tq;
- gen.dsdx = ti.dsdx;
- gen.dtdx = ti.dtdx;
- c->span(c);
- }
-}
-
-// ----------------------------------------------------------------------------
-
-void scanline_t32cb16(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- union {
- uint16_t* dst;
- uint32_t* dst32;
- };
- dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
-
- surface_t* tex = &(c->state.texture[0].surface);
- const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
- const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
- uint32_t *src = reinterpret_cast<uint32_t*>(tex->data)+(u+(tex->stride*v));
- int sR, sG, sB;
- uint32_t s, d;
-
- if (ct==1 || uint32_t(dst)&2) {
-last_one:
- s = GGL_RGBA_TO_HOST( *src++ );
- sR = (s >> ( 3))&0x1F;
- sG = (s >> ( 8+2))&0x3F;
- sB = (s >> (16+3))&0x1F;
- *dst++ = uint16_t((sR<<11)|(sG<<5)|sB);
- ct--;
- }
-
- while (ct >= 2) {
- s = GGL_RGBA_TO_HOST( *src++ );
- sR = (s >> ( 3))&0x1F;
- sG = (s >> ( 8+2))&0x3F;
- sB = (s >> (16+3))&0x1F;
- d = (sR<<11)|(sG<<5)|sB;
-
- s = GGL_RGBA_TO_HOST( *src++ );
- sR = (s >> ( 3))&0x1F;
- sG = (s >> ( 8+2))&0x3F;
- sB = (s >> (16+3))&0x1F;
- d |= ((sR<<11)|(sG<<5)|sB)<<16;
-
-#if BYTE_ORDER == BIG_ENDIAN
- d = (d>>16) | (d<<16);
-#endif
-
- *dst32++ = d;
- ct -= 2;
- }
-
- if (ct > 0) {
- goto last_one;
- }
-}
-
-void scanline_t32cb16blend(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- uint16_t* dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
-
- surface_t* tex = &(c->state.texture[0].surface);
- const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
- const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
- uint32_t *src = reinterpret_cast<uint32_t*>(tex->data)+(u+(tex->stride*v));
-
-#if ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && defined(__arm__))
- scanline_t32cb16blend_arm(dst, src, ct);
-#else
- while (ct--) {
- uint32_t s = *src++;
- if (!s) {
- dst++;
- continue;
- }
- uint16_t d = *dst;
- s = GGL_RGBA_TO_HOST(s);
- int sR = (s >> ( 3))&0x1F;
- int sG = (s >> ( 8+2))&0x3F;
- int sB = (s >> (16+3))&0x1F;
- int sA = (s>>24);
- int f = 0x100 - (sA + (sA>>7));
- int dR = (d>>11)&0x1f;
- int dG = (d>>5)&0x3f;
- int dB = (d)&0x1f;
- sR += (f*dR)>>8;
- sG += (f*dG)>>8;
- sB += (f*dB)>>8;
- *dst++ = uint16_t((sR<<11)|(sG<<5)|sB);
- }
-#endif
-}
-
-void scanline_memcpy(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- const GGLFormat* fp = &(c->formats[cb->format]);
- uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
- (x + (cb->stride * y)) * fp->size;
-
- surface_t* tex = &(c->state.texture[0].surface);
- const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
- const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
- uint8_t *src = reinterpret_cast<uint8_t*>(tex->data) +
- (u + (tex->stride * v)) * fp->size;
-
- const size_t size = ct * fp->size;
- memcpy(dst, src, size);
-}
-
-void scanline_memset8(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) + (x+(cb->stride*y));
- uint32_t packed = c->packed;
- memset(dst, packed, ct);
-}
-
-void scanline_memset16(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- uint16_t* dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y));
- uint32_t packed = c->packed;
- android_memset16(dst, packed, ct*2);
-}
-
-void scanline_memset32(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- uint32_t* dst = reinterpret_cast<uint32_t*>(cb->data) + (x+(cb->stride*y));
- uint32_t packed = GGL_HOST_TO_RGBA(c->packed);
- android_memset32(dst, packed, ct*4);
-}
-
-void scanline_clear(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- const GGLFormat* fp = &(c->formats[cb->format]);
- uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
- (x + (cb->stride * y)) * fp->size;
- const size_t size = ct * fp->size;
- memset(dst, 0, size);
-}
-
-void scanline_set(context_t* c)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- const GGLFormat* fp = &(c->formats[cb->format]);
- uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
- (x + (cb->stride * y)) * fp->size;
- const size_t size = ct * fp->size;
- memset(dst, 0xFF, size);
-}
-
-void scanline_noop(context_t* c)
-{
-}
-
-void rect_generic(context_t* c, size_t yc)
-{
- do {
- c->scanline(c);
- c->step_y(c);
- } while (--yc);
-}
-
-void rect_memcpy(context_t* c, size_t yc)
-{
- int32_t x = c->iterators.xl;
- size_t ct = c->iterators.xr - x;
- int32_t y = c->iterators.y;
- surface_t* cb = &(c->state.buffers.color);
- const GGLFormat* fp = &(c->formats[cb->format]);
- uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) +
- (x + (cb->stride * y)) * fp->size;
-
- surface_t* tex = &(c->state.texture[0].surface);
- const int32_t u = (c->state.texture[0].shade.is0>>16) + x;
- const int32_t v = (c->state.texture[0].shade.it0>>16) + y;
- uint8_t *src = reinterpret_cast<uint8_t*>(tex->data) +
- (u + (tex->stride * v)) * fp->size;
-
- if (cb->stride == tex->stride && ct == size_t(cb->stride)) {
- memcpy(dst, src, ct * fp->size * yc);
- } else {
- const size_t size = ct * fp->size;
- const size_t dbpr = cb->stride * fp->size;
- const size_t sbpr = tex->stride * fp->size;
- do {
- memcpy(dst, src, size);
- dst += dbpr;
- src += sbpr;
- } while (--yc);
- }
-}
-// ----------------------------------------------------------------------------
-}; // namespace android
-
-using namespace android;
-extern "C" void ggl_test_codegen(uint32_t n, uint32_t p, uint32_t t0, uint32_t t1)
-{
-#if ANDROID_ARM_CODEGEN
- GGLContext* c;
- gglInit(&c);
- needs_t needs;
- needs.n = n;
- needs.p = p;
- needs.t[0] = t0;
- needs.t[1] = t1;
- sp<ScanlineAssembly> a(new ScanlineAssembly(needs, ASSEMBLY_SCRATCH_SIZE));
- GGLAssembler assembler( new ARMAssembler(a) );
- int err = assembler.scanline(needs, (context_t*)c);
- if (err != 0) {
- printf("error %08x (%s)\n", err, strerror(-err));
- }
- gglUninit(c);
-#else
- printf("This test runs only on ARM\n");
-#endif
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-19 00:44:30 +0000