The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | /* libs/pixelflinger/scanline.cpp |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | |
| 19 | #define LOG_TAG "pixelflinger" |
| 20 | |
| 21 | #include <assert.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <stdio.h> |
| 24 | #include <string.h> |
| 25 | |
| 26 | #include <cutils/memory.h> |
| 27 | #include <cutils/log.h> |
| 28 | |
| 29 | #include "buffer.h" |
| 30 | #include "scanline.h" |
| 31 | |
| 32 | #include "codeflinger/CodeCache.h" |
| 33 | #include "codeflinger/GGLAssembler.h" |
| 34 | #include "codeflinger/ARMAssembler.h" |
| 35 | //#include "codeflinger/ARMAssemblerOptimizer.h" |
| 36 | |
| 37 | // ---------------------------------------------------------------------------- |
| 38 | |
| 39 | #define ANDROID_CODEGEN_GENERIC 0 // force generic pixel pipeline |
| 40 | #define ANDROID_CODEGEN_C 1 // hand-written C, fallback generic |
| 41 | #define ANDROID_CODEGEN_ASM 2 // hand-written asm, fallback generic |
| 42 | #define ANDROID_CODEGEN_GENERATED 3 // hand-written asm, fallback codegen |
| 43 | |
| 44 | #ifdef NDEBUG |
| 45 | # define ANDROID_RELEASE |
| 46 | # define ANDROID_CODEGEN ANDROID_CODEGEN_GENERATED |
| 47 | #else |
| 48 | # define ANDROID_DEBUG |
| 49 | # define ANDROID_CODEGEN ANDROID_CODEGEN_GENERATED |
| 50 | #endif |
| 51 | |
| 52 | #if defined(__arm__) |
| 53 | # define ANDROID_ARM_CODEGEN 1 |
| 54 | #else |
| 55 | # define ANDROID_ARM_CODEGEN 0 |
| 56 | #endif |
| 57 | |
| 58 | #define DEBUG__CODEGEN_ONLY 0 |
| 59 | |
| 60 | |
| 61 | #define ASSEMBLY_SCRATCH_SIZE 2048 |
| 62 | |
| 63 | // ---------------------------------------------------------------------------- |
| 64 | namespace android { |
| 65 | // ---------------------------------------------------------------------------- |
| 66 | |
| 67 | static void init_y(context_t*, int32_t); |
| 68 | static void init_y_noop(context_t*, int32_t); |
| 69 | static void init_y_packed(context_t*, int32_t); |
| 70 | static void init_y_error(context_t*, int32_t); |
| 71 | |
| 72 | static void step_y__generic(context_t* c); |
| 73 | static void step_y__nop(context_t*); |
| 74 | static void step_y__smooth(context_t* c); |
| 75 | static void step_y__tmu(context_t* c); |
| 76 | static void step_y__w(context_t* c); |
| 77 | |
| 78 | static void scanline(context_t* c); |
| 79 | static void scanline_perspective(context_t* c); |
| 80 | static void scanline_perspective_single(context_t* c); |
| 81 | static void scanline_t32cb16blend(context_t* c); |
| 82 | static void scanline_t32cb16(context_t* c); |
Martyn Capewell | f9e8ab0 | 2009-12-07 15:00:19 +0000 | [diff] [blame^] | 83 | static void scanline_col32cb16blend(context_t* c); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 84 | static void scanline_memcpy(context_t* c); |
| 85 | static void scanline_memset8(context_t* c); |
| 86 | static void scanline_memset16(context_t* c); |
| 87 | static void scanline_memset32(context_t* c); |
| 88 | static void scanline_noop(context_t* c); |
| 89 | static void scanline_set(context_t* c); |
| 90 | static void scanline_clear(context_t* c); |
| 91 | |
| 92 | static void rect_generic(context_t* c, size_t yc); |
| 93 | static void rect_memcpy(context_t* c, size_t yc); |
| 94 | |
| 95 | extern "C" void scanline_t32cb16blend_arm(uint16_t*, uint32_t*, size_t); |
| 96 | extern "C" void scanline_t32cb16_arm(uint16_t *dst, uint32_t *src, size_t ct); |
Martyn Capewell | f9e8ab0 | 2009-12-07 15:00:19 +0000 | [diff] [blame^] | 97 | extern "C" void scanline_col32cb16blend_neon(uint16_t *dst, uint32_t *col, size_t ct); |
| 98 | extern "C" void scanline_col32cb16blend_arm(uint16_t *dst, uint32_t col, size_t ct); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 99 | |
| 100 | // ---------------------------------------------------------------------------- |
| 101 | |
| 102 | struct shortcut_t { |
| 103 | needs_filter_t filter; |
| 104 | const char* desc; |
| 105 | void (*scanline)(context_t*); |
| 106 | void (*init_y)(context_t*, int32_t); |
| 107 | }; |
| 108 | |
| 109 | // Keep in sync with needs |
| 110 | static shortcut_t shortcuts[] = { |
| 111 | { { { 0x03515104, 0x00000077, { 0x00000A01, 0x00000000 } }, |
| 112 | { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } }, |
| 113 | "565 fb, 8888 tx, blend", scanline_t32cb16blend, init_y_noop }, |
| 114 | { { { 0x03010104, 0x00000077, { 0x00000A01, 0x00000000 } }, |
| 115 | { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0x0000003F } } }, |
| 116 | "565 fb, 8888 tx", scanline_t32cb16, init_y_noop }, |
Martyn Capewell | f9e8ab0 | 2009-12-07 15:00:19 +0000 | [diff] [blame^] | 117 | { { { 0x03515104, 0x00000077, { 0x00000000, 0x00000000 } }, |
| 118 | { 0xFFFFFFFF, 0xFFFFFFFF, { 0xFFFFFFFF, 0xFFFFFFFF } } }, |
| 119 | "565 fb, 8888 fixed color", scanline_col32cb16blend, init_y_packed }, |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 120 | { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } }, |
| 121 | { 0x00000000, 0x00000007, { 0x00000000, 0x00000000 } } }, |
| 122 | "(nop) alpha test", scanline_noop, init_y_noop }, |
| 123 | { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } }, |
| 124 | { 0x00000000, 0x00000070, { 0x00000000, 0x00000000 } } }, |
| 125 | "(nop) depth test", scanline_noop, init_y_noop }, |
| 126 | { { { 0x05000000, 0x00000000, { 0x00000000, 0x00000000 } }, |
| 127 | { 0x0F000000, 0x00000080, { 0x00000000, 0x00000000 } } }, |
| 128 | "(nop) logic_op", scanline_noop, init_y_noop }, |
| 129 | { { { 0xF0000000, 0x00000000, { 0x00000000, 0x00000000 } }, |
| 130 | { 0xF0000000, 0x00000080, { 0x00000000, 0x00000000 } } }, |
| 131 | "(nop) color mask", scanline_noop, init_y_noop }, |
| 132 | { { { 0x0F000000, 0x00000077, { 0x00000000, 0x00000000 } }, |
| 133 | { 0xFF000000, 0x000000F7, { 0x00000000, 0x00000000 } } }, |
| 134 | "(set) logic_op", scanline_set, init_y_noop }, |
| 135 | { { { 0x00000000, 0x00000077, { 0x00000000, 0x00000000 } }, |
| 136 | { 0xFF000000, 0x000000F7, { 0x00000000, 0x00000000 } } }, |
| 137 | "(clear) logic_op", scanline_clear, init_y_noop }, |
| 138 | { { { 0x03000000, 0x00000077, { 0x00000000, 0x00000000 } }, |
| 139 | { 0xFFFFFF00, 0x000000F7, { 0x00000000, 0x00000000 } } }, |
| 140 | "(clear) blending 0/0", scanline_clear, init_y_noop }, |
| 141 | { { { 0x00000000, 0x00000000, { 0x00000000, 0x00000000 } }, |
| 142 | { 0x0000003F, 0x00000000, { 0x00000000, 0x00000000 } } }, |
| 143 | "(error) invalid color-buffer format", scanline_noop, init_y_error }, |
| 144 | }; |
| 145 | static const needs_filter_t noblend1to1 = { |
| 146 | // (disregard dithering, see below) |
| 147 | { 0x03010100, 0x00000077, { 0x00000A00, 0x00000000 } }, |
| 148 | { 0xFFFFFFC0, 0xFFFFFEFF, { 0xFFFFFFC0, 0x0000003F } } |
| 149 | }; |
| 150 | static const needs_filter_t fill16noblend = { |
| 151 | { 0x03010100, 0x00000077, { 0x00000000, 0x00000000 } }, |
| 152 | { 0xFFFFFFC0, 0xFFFFFFFF, { 0x0000003F, 0x0000003F } } |
| 153 | }; |
| 154 | |
| 155 | // ---------------------------------------------------------------------------- |
| 156 | |
| 157 | #if ANDROID_ARM_CODEGEN |
| 158 | static CodeCache gCodeCache(12 * 1024); |
| 159 | |
| 160 | class ScanlineAssembly : public Assembly { |
| 161 | AssemblyKey<needs_t> mKey; |
| 162 | public: |
| 163 | ScanlineAssembly(needs_t needs, size_t size) |
| 164 | : Assembly(size), mKey(needs) { } |
| 165 | const AssemblyKey<needs_t>& key() const { return mKey; } |
| 166 | }; |
| 167 | #endif |
| 168 | |
| 169 | // ---------------------------------------------------------------------------- |
| 170 | |
| 171 | void ggl_init_scanline(context_t* c) |
| 172 | { |
| 173 | c->init_y = init_y; |
| 174 | c->step_y = step_y__generic; |
| 175 | c->scanline = scanline; |
| 176 | } |
| 177 | |
| 178 | void ggl_uninit_scanline(context_t* c) |
| 179 | { |
| 180 | if (c->state.buffers.coverage) |
| 181 | free(c->state.buffers.coverage); |
| 182 | #if ANDROID_ARM_CODEGEN |
| 183 | if (c->scanline_as) |
| 184 | c->scanline_as->decStrong(c); |
| 185 | #endif |
| 186 | } |
| 187 | |
| 188 | // ---------------------------------------------------------------------------- |
| 189 | |
| 190 | static void pick_scanline(context_t* c) |
| 191 | { |
| 192 | #if (!defined(DEBUG__CODEGEN_ONLY) || (DEBUG__CODEGEN_ONLY == 0)) |
| 193 | |
| 194 | #if ANDROID_CODEGEN == ANDROID_CODEGEN_GENERIC |
| 195 | c->init_y = init_y; |
| 196 | c->step_y = step_y__generic; |
| 197 | c->scanline = scanline; |
| 198 | return; |
| 199 | #endif |
| 200 | |
| 201 | //printf("*** needs [%08lx:%08lx:%08lx:%08lx]\n", |
| 202 | // c->state.needs.n, c->state.needs.p, |
| 203 | // c->state.needs.t[0], c->state.needs.t[1]); |
| 204 | |
| 205 | // first handle the special case that we cannot test with a filter |
| 206 | const uint32_t cb_format = GGL_READ_NEEDS(CB_FORMAT, c->state.needs.n); |
| 207 | if (GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0]) == cb_format) { |
| 208 | if (c->state.needs.match(noblend1to1)) { |
| 209 | // this will match regardless of dithering state, since both |
| 210 | // src and dest have the same format anyway, there is no dithering |
| 211 | // to be done. |
| 212 | const GGLFormat* f = |
| 213 | &(c->formats[GGL_READ_NEEDS(T_FORMAT, c->state.needs.t[0])]); |
| 214 | if ((f->components == GGL_RGB) || |
| 215 | (f->components == GGL_RGBA) || |
| 216 | (f->components == GGL_LUMINANCE) || |
| 217 | (f->components == GGL_LUMINANCE_ALPHA)) |
| 218 | { |
| 219 | // format must have all of RGB components |
| 220 | // (so the current color doesn't show through) |
| 221 | c->scanline = scanline_memcpy; |
| 222 | c->init_y = init_y_noop; |
| 223 | return; |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | if (c->state.needs.match(fill16noblend)) { |
| 229 | c->init_y = init_y_packed; |
| 230 | switch (c->formats[cb_format].size) { |
| 231 | case 1: c->scanline = scanline_memset8; return; |
| 232 | case 2: c->scanline = scanline_memset16; return; |
| 233 | case 4: c->scanline = scanline_memset32; return; |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | const int numFilters = sizeof(shortcuts)/sizeof(shortcut_t); |
| 238 | for (int i=0 ; i<numFilters ; i++) { |
| 239 | if (c->state.needs.match(shortcuts[i].filter)) { |
| 240 | c->scanline = shortcuts[i].scanline; |
| 241 | c->init_y = shortcuts[i].init_y; |
| 242 | return; |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | #endif // DEBUG__CODEGEN_ONLY |
| 247 | |
| 248 | c->init_y = init_y; |
| 249 | c->step_y = step_y__generic; |
| 250 | |
| 251 | #if ANDROID_ARM_CODEGEN |
| 252 | // we're going to have to generate some code... |
| 253 | // here, generate code for our pixel pipeline |
| 254 | const AssemblyKey<needs_t> key(c->state.needs); |
| 255 | sp<Assembly> assembly = gCodeCache.lookup(key); |
| 256 | if (assembly == 0) { |
| 257 | // create a new assembly region |
| 258 | sp<ScanlineAssembly> a = new ScanlineAssembly(c->state.needs, |
| 259 | ASSEMBLY_SCRATCH_SIZE); |
| 260 | // initialize our assembler |
| 261 | GGLAssembler assembler( new ARMAssembler(a) ); |
| 262 | //GGLAssembler assembler( |
| 263 | // new ARMAssemblerOptimizer(new ARMAssembler(a)) ); |
| 264 | // generate the scanline code for the given needs |
| 265 | int err = assembler.scanline(c->state.needs, c); |
| 266 | if (ggl_likely(!err)) { |
| 267 | // finally, cache this assembly |
| 268 | err = gCodeCache.cache(a->key(), a); |
| 269 | } |
| 270 | if (ggl_unlikely(err)) { |
| 271 | LOGE("error generating or caching assembly. Reverting to NOP."); |
| 272 | c->scanline = scanline_noop; |
| 273 | c->init_y = init_y_noop; |
| 274 | c->step_y = step_y__nop; |
| 275 | return; |
| 276 | } |
| 277 | assembly = a; |
| 278 | } |
| 279 | |
| 280 | // release the previous assembly |
| 281 | if (c->scanline_as) { |
| 282 | c->scanline_as->decStrong(c); |
| 283 | } |
| 284 | |
| 285 | //LOGI("using generated pixel-pipeline"); |
| 286 | c->scanline_as = assembly.get(); |
| 287 | c->scanline_as->incStrong(c); // hold on to assembly |
| 288 | c->scanline = (void(*)(context_t* c))assembly->base(); |
| 289 | #else |
| 290 | // LOGW("using generic (slow) pixel-pipeline"); |
| 291 | c->scanline = scanline; |
| 292 | #endif |
| 293 | } |
| 294 | |
| 295 | void ggl_pick_scanline(context_t* c) |
| 296 | { |
| 297 | pick_scanline(c); |
| 298 | if ((c->state.enables & GGL_ENABLE_W) && |
| 299 | (c->state.enables & GGL_ENABLE_TMUS)) |
| 300 | { |
| 301 | c->span = c->scanline; |
| 302 | c->scanline = scanline_perspective; |
| 303 | if (!(c->state.enabled_tmu & (c->state.enabled_tmu - 1))) { |
| 304 | // only one TMU enabled |
| 305 | c->scanline = scanline_perspective_single; |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | // ---------------------------------------------------------------------------- |
| 311 | |
| 312 | static void blending(context_t* c, pixel_t* fragment, pixel_t* fb); |
| 313 | static void blend_factor(context_t* c, pixel_t* r, uint32_t factor, |
| 314 | const pixel_t* src, const pixel_t* dst); |
| 315 | static void rescale(uint32_t& u, uint8_t& su, uint32_t& v, uint8_t& sv); |
| 316 | |
| 317 | #if ANDROID_ARM_CODEGEN && (ANDROID_CODEGEN == ANDROID_CODEGEN_GENERATED) |
| 318 | |
| 319 | // no need to compile the generic-pipeline, it can't be reached |
| 320 | void scanline(context_t*) |
| 321 | { |
| 322 | } |
| 323 | |
| 324 | #else |
| 325 | |
| 326 | void rescale(uint32_t& u, uint8_t& su, uint32_t& v, uint8_t& sv) |
| 327 | { |
| 328 | if (su && sv) { |
| 329 | if (su > sv) { |
| 330 | v = ggl_expand(v, sv, su); |
| 331 | sv = su; |
| 332 | } else if (su < sv) { |
| 333 | u = ggl_expand(u, su, sv); |
| 334 | su = sv; |
| 335 | } |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | void blending(context_t* c, pixel_t* fragment, pixel_t* fb) |
| 340 | { |
| 341 | rescale(fragment->c[0], fragment->s[0], fb->c[0], fb->s[0]); |
| 342 | rescale(fragment->c[1], fragment->s[1], fb->c[1], fb->s[1]); |
| 343 | rescale(fragment->c[2], fragment->s[2], fb->c[2], fb->s[2]); |
| 344 | rescale(fragment->c[3], fragment->s[3], fb->c[3], fb->s[3]); |
| 345 | |
| 346 | pixel_t sf, df; |
| 347 | blend_factor(c, &sf, c->state.blend.src, fragment, fb); |
| 348 | blend_factor(c, &df, c->state.blend.dst, fragment, fb); |
| 349 | |
| 350 | fragment->c[1] = |
| 351 | gglMulAddx(fragment->c[1], sf.c[1], gglMulx(fb->c[1], df.c[1])); |
| 352 | fragment->c[2] = |
| 353 | gglMulAddx(fragment->c[2], sf.c[2], gglMulx(fb->c[2], df.c[2])); |
| 354 | fragment->c[3] = |
| 355 | gglMulAddx(fragment->c[3], sf.c[3], gglMulx(fb->c[3], df.c[3])); |
| 356 | |
| 357 | if (c->state.blend.alpha_separate) { |
| 358 | blend_factor(c, &sf, c->state.blend.src_alpha, fragment, fb); |
| 359 | blend_factor(c, &df, c->state.blend.dst_alpha, fragment, fb); |
| 360 | } |
| 361 | |
| 362 | fragment->c[0] = |
| 363 | gglMulAddx(fragment->c[0], sf.c[0], gglMulx(fb->c[0], df.c[0])); |
| 364 | |
| 365 | // clamp to 1.0 |
| 366 | if (fragment->c[0] >= (1LU<<fragment->s[0])) |
| 367 | fragment->c[0] = (1<<fragment->s[0])-1; |
| 368 | if (fragment->c[1] >= (1LU<<fragment->s[1])) |
| 369 | fragment->c[1] = (1<<fragment->s[1])-1; |
| 370 | if (fragment->c[2] >= (1LU<<fragment->s[2])) |
| 371 | fragment->c[2] = (1<<fragment->s[2])-1; |
| 372 | if (fragment->c[3] >= (1LU<<fragment->s[3])) |
| 373 | fragment->c[3] = (1<<fragment->s[3])-1; |
| 374 | } |
| 375 | |
| 376 | static inline int blendfactor(uint32_t x, uint32_t size, uint32_t def = 0) |
| 377 | { |
| 378 | if (!size) |
| 379 | return def; |
| 380 | |
| 381 | // scale to 16 bits |
| 382 | if (size > 16) { |
| 383 | x >>= (size - 16); |
| 384 | } else if (size < 16) { |
| 385 | x = ggl_expand(x, size, 16); |
| 386 | } |
| 387 | x += x >> 15; |
| 388 | return x; |
| 389 | } |
| 390 | |
| 391 | void blend_factor(context_t* c, pixel_t* r, |
| 392 | uint32_t factor, const pixel_t* src, const pixel_t* dst) |
| 393 | { |
| 394 | switch (factor) { |
| 395 | case GGL_ZERO: |
| 396 | r->c[1] = |
| 397 | r->c[2] = |
| 398 | r->c[3] = |
| 399 | r->c[0] = 0; |
| 400 | break; |
| 401 | case GGL_ONE: |
| 402 | r->c[1] = |
| 403 | r->c[2] = |
| 404 | r->c[3] = |
| 405 | r->c[0] = FIXED_ONE; |
| 406 | break; |
| 407 | case GGL_DST_COLOR: |
| 408 | r->c[1] = blendfactor(dst->c[1], dst->s[1]); |
| 409 | r->c[2] = blendfactor(dst->c[2], dst->s[2]); |
| 410 | r->c[3] = blendfactor(dst->c[3], dst->s[3]); |
| 411 | r->c[0] = blendfactor(dst->c[0], dst->s[0]); |
| 412 | break; |
| 413 | case GGL_SRC_COLOR: |
| 414 | r->c[1] = blendfactor(src->c[1], src->s[1]); |
| 415 | r->c[2] = blendfactor(src->c[2], src->s[2]); |
| 416 | r->c[3] = blendfactor(src->c[3], src->s[3]); |
| 417 | r->c[0] = blendfactor(src->c[0], src->s[0]); |
| 418 | break; |
| 419 | case GGL_ONE_MINUS_DST_COLOR: |
| 420 | r->c[1] = FIXED_ONE - blendfactor(dst->c[1], dst->s[1]); |
| 421 | r->c[2] = FIXED_ONE - blendfactor(dst->c[2], dst->s[2]); |
| 422 | r->c[3] = FIXED_ONE - blendfactor(dst->c[3], dst->s[3]); |
| 423 | r->c[0] = FIXED_ONE - blendfactor(dst->c[0], dst->s[0]); |
| 424 | break; |
| 425 | case GGL_ONE_MINUS_SRC_COLOR: |
| 426 | r->c[1] = FIXED_ONE - blendfactor(src->c[1], src->s[1]); |
| 427 | r->c[2] = FIXED_ONE - blendfactor(src->c[2], src->s[2]); |
| 428 | r->c[3] = FIXED_ONE - blendfactor(src->c[3], src->s[3]); |
| 429 | r->c[0] = FIXED_ONE - blendfactor(src->c[0], src->s[0]); |
| 430 | break; |
| 431 | case GGL_SRC_ALPHA: |
| 432 | r->c[1] = |
| 433 | r->c[2] = |
| 434 | r->c[3] = |
| 435 | r->c[0] = blendfactor(src->c[0], src->s[0], FIXED_ONE); |
| 436 | break; |
| 437 | case GGL_ONE_MINUS_SRC_ALPHA: |
| 438 | r->c[1] = |
| 439 | r->c[2] = |
| 440 | r->c[3] = |
| 441 | r->c[0] = FIXED_ONE - blendfactor(src->c[0], src->s[0], FIXED_ONE); |
| 442 | break; |
| 443 | case GGL_DST_ALPHA: |
| 444 | r->c[1] = |
| 445 | r->c[2] = |
| 446 | r->c[3] = |
| 447 | r->c[0] = blendfactor(dst->c[0], dst->s[0], FIXED_ONE); |
| 448 | break; |
| 449 | case GGL_ONE_MINUS_DST_ALPHA: |
| 450 | r->c[1] = |
| 451 | r->c[2] = |
| 452 | r->c[3] = |
| 453 | r->c[0] = FIXED_ONE - blendfactor(dst->c[0], dst->s[0], FIXED_ONE); |
| 454 | break; |
| 455 | case GGL_SRC_ALPHA_SATURATE: |
| 456 | // XXX: GGL_SRC_ALPHA_SATURATE |
| 457 | break; |
| 458 | } |
| 459 | } |
| 460 | |
| 461 | static GGLfixed wrapping(int32_t coord, uint32_t size, int tx_wrap) |
| 462 | { |
| 463 | GGLfixed d; |
| 464 | if (tx_wrap == GGL_REPEAT) { |
| 465 | d = (uint32_t(coord)>>16) * size; |
| 466 | } else if (tx_wrap == GGL_CLAMP) { // CLAMP_TO_EDGE semantics |
| 467 | const GGLfixed clamp_min = FIXED_HALF; |
| 468 | const GGLfixed clamp_max = (size << 16) - FIXED_HALF; |
| 469 | if (coord < clamp_min) coord = clamp_min; |
| 470 | if (coord > clamp_max) coord = clamp_max; |
| 471 | d = coord; |
| 472 | } else { // 1:1 |
| 473 | const GGLfixed clamp_min = 0; |
| 474 | const GGLfixed clamp_max = (size << 16); |
| 475 | if (coord < clamp_min) coord = clamp_min; |
| 476 | if (coord > clamp_max) coord = clamp_max; |
| 477 | d = coord; |
| 478 | } |
| 479 | return d; |
| 480 | } |
| 481 | |
| 482 | static inline |
| 483 | GGLcolor ADJUST_COLOR_ITERATOR(GGLcolor v, GGLcolor dvdx, int len) |
| 484 | { |
| 485 | const int32_t end = dvdx * (len-1) + v; |
| 486 | if (end < 0) |
| 487 | v -= end; |
| 488 | v &= ~(v>>31); |
| 489 | return v; |
| 490 | } |
| 491 | |
| 492 | void scanline(context_t* c) |
| 493 | { |
| 494 | const uint32_t enables = c->state.enables; |
| 495 | const int xs = c->iterators.xl; |
| 496 | const int x1 = c->iterators.xr; |
| 497 | int xc = x1 - xs; |
| 498 | const int16_t* covPtr = c->state.buffers.coverage + xs; |
| 499 | |
| 500 | // All iterated values are sampled at the pixel center |
| 501 | |
| 502 | // reset iterators for that scanline... |
| 503 | GGLcolor r, g, b, a; |
| 504 | iterators_t& ci = c->iterators; |
| 505 | if (enables & GGL_ENABLE_SMOOTH) { |
| 506 | r = (xs * c->shade.drdx) + ci.ydrdy; |
| 507 | g = (xs * c->shade.dgdx) + ci.ydgdy; |
| 508 | b = (xs * c->shade.dbdx) + ci.ydbdy; |
| 509 | a = (xs * c->shade.dadx) + ci.ydady; |
| 510 | r = ADJUST_COLOR_ITERATOR(r, c->shade.drdx, xc); |
| 511 | g = ADJUST_COLOR_ITERATOR(g, c->shade.dgdx, xc); |
| 512 | b = ADJUST_COLOR_ITERATOR(b, c->shade.dbdx, xc); |
| 513 | a = ADJUST_COLOR_ITERATOR(a, c->shade.dadx, xc); |
| 514 | } else { |
| 515 | r = ci.ydrdy; |
| 516 | g = ci.ydgdy; |
| 517 | b = ci.ydbdy; |
| 518 | a = ci.ydady; |
| 519 | } |
| 520 | |
| 521 | // z iterators are 1.31 |
| 522 | GGLfixed z = (xs * c->shade.dzdx) + ci.ydzdy; |
| 523 | GGLfixed f = (xs * c->shade.dfdx) + ci.ydfdy; |
| 524 | |
| 525 | struct { |
| 526 | GGLfixed s, t; |
| 527 | } tc[GGL_TEXTURE_UNIT_COUNT]; |
| 528 | if (enables & GGL_ENABLE_TMUS) { |
| 529 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) { |
| 530 | if (c->state.texture[i].enable) { |
| 531 | texture_iterators_t& ti = c->state.texture[i].iterators; |
| 532 | if (enables & GGL_ENABLE_W) { |
| 533 | tc[i].s = ti.ydsdy; |
| 534 | tc[i].t = ti.ydtdy; |
| 535 | } else { |
| 536 | tc[i].s = (xs * ti.dsdx) + ti.ydsdy; |
| 537 | tc[i].t = (xs * ti.dtdx) + ti.ydtdy; |
| 538 | } |
| 539 | } |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | pixel_t fragment; |
| 544 | pixel_t texel; |
| 545 | pixel_t fb; |
| 546 | |
| 547 | uint32_t x = xs; |
| 548 | uint32_t y = c->iterators.y; |
| 549 | |
| 550 | while (xc--) { |
| 551 | |
| 552 | { // just a scope |
| 553 | |
| 554 | // read color (convert to 8 bits by keeping only the integer part) |
| 555 | fragment.s[1] = fragment.s[2] = |
| 556 | fragment.s[3] = fragment.s[0] = 8; |
| 557 | fragment.c[1] = r >> (GGL_COLOR_BITS-8); |
| 558 | fragment.c[2] = g >> (GGL_COLOR_BITS-8); |
| 559 | fragment.c[3] = b >> (GGL_COLOR_BITS-8); |
| 560 | fragment.c[0] = a >> (GGL_COLOR_BITS-8); |
| 561 | |
| 562 | // texturing |
| 563 | if (enables & GGL_ENABLE_TMUS) { |
| 564 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) { |
| 565 | texture_t& tx = c->state.texture[i]; |
| 566 | if (!tx.enable) |
| 567 | continue; |
| 568 | texture_iterators_t& ti = tx.iterators; |
| 569 | int32_t u, v; |
| 570 | |
| 571 | // s-coordinate |
| 572 | if (tx.s_coord != GGL_ONE_TO_ONE) { |
| 573 | const int w = tx.surface.width; |
| 574 | u = wrapping(tc[i].s, w, tx.s_wrap); |
| 575 | tc[i].s += ti.dsdx; |
| 576 | } else { |
| 577 | u = (((tx.shade.is0>>16) + x)<<16) + FIXED_HALF; |
| 578 | } |
| 579 | |
| 580 | // t-coordinate |
| 581 | if (tx.t_coord != GGL_ONE_TO_ONE) { |
| 582 | const int h = tx.surface.height; |
| 583 | v = wrapping(tc[i].t, h, tx.t_wrap); |
| 584 | tc[i].t += ti.dtdx; |
| 585 | } else { |
| 586 | v = (((tx.shade.it0>>16) + y)<<16) + FIXED_HALF; |
| 587 | } |
| 588 | |
| 589 | // read texture |
| 590 | if (tx.mag_filter == GGL_NEAREST && |
| 591 | tx.min_filter == GGL_NEAREST) |
| 592 | { |
| 593 | u >>= 16; |
| 594 | v >>= 16; |
| 595 | tx.surface.read(&tx.surface, c, u, v, &texel); |
| 596 | } else { |
| 597 | const int w = tx.surface.width; |
| 598 | const int h = tx.surface.height; |
| 599 | u -= FIXED_HALF; |
| 600 | v -= FIXED_HALF; |
| 601 | int u0 = u >> 16; |
| 602 | int v0 = v >> 16; |
| 603 | int u1 = u0 + 1; |
| 604 | int v1 = v0 + 1; |
| 605 | if (tx.s_wrap == GGL_REPEAT) { |
| 606 | if (u0<0) u0 += w; |
| 607 | if (u1<0) u1 += w; |
| 608 | if (u0>=w) u0 -= w; |
| 609 | if (u1>=w) u1 -= w; |
| 610 | } else { |
| 611 | if (u0<0) u0 = 0; |
| 612 | if (u1<0) u1 = 0; |
| 613 | if (u0>=w) u0 = w-1; |
| 614 | if (u1>=w) u1 = w-1; |
| 615 | } |
| 616 | if (tx.t_wrap == GGL_REPEAT) { |
| 617 | if (v0<0) v0 += h; |
| 618 | if (v1<0) v1 += h; |
| 619 | if (v0>=h) v0 -= h; |
| 620 | if (v1>=h) v1 -= h; |
| 621 | } else { |
| 622 | if (v0<0) v0 = 0; |
| 623 | if (v1<0) v1 = 0; |
| 624 | if (v0>=h) v0 = h-1; |
| 625 | if (v1>=h) v1 = h-1; |
| 626 | } |
| 627 | pixel_t texels[4]; |
| 628 | uint32_t mm[4]; |
| 629 | tx.surface.read(&tx.surface, c, u0, v0, &texels[0]); |
| 630 | tx.surface.read(&tx.surface, c, u0, v1, &texels[1]); |
| 631 | tx.surface.read(&tx.surface, c, u1, v0, &texels[2]); |
| 632 | tx.surface.read(&tx.surface, c, u1, v1, &texels[3]); |
| 633 | u = (u >> 12) & 0xF; |
| 634 | v = (v >> 12) & 0xF; |
| 635 | u += u>>3; |
| 636 | v += v>>3; |
| 637 | mm[0] = (0x10 - u) * (0x10 - v); |
| 638 | mm[1] = (0x10 - u) * v; |
| 639 | mm[2] = u * (0x10 - v); |
| 640 | mm[3] = 0x100 - (mm[0] + mm[1] + mm[2]); |
| 641 | for (int j=0 ; j<4 ; j++) { |
| 642 | texel.s[j] = texels[0].s[j]; |
| 643 | if (!texel.s[j]) continue; |
| 644 | texel.s[j] += 8; |
| 645 | texel.c[j] = texels[0].c[j]*mm[0] + |
| 646 | texels[1].c[j]*mm[1] + |
| 647 | texels[2].c[j]*mm[2] + |
| 648 | texels[3].c[j]*mm[3] ; |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | // Texture environnement... |
| 653 | for (int j=0 ; j<4 ; j++) { |
| 654 | uint32_t& Cf = fragment.c[j]; |
| 655 | uint32_t& Ct = texel.c[j]; |
| 656 | uint8_t& sf = fragment.s[j]; |
| 657 | uint8_t& st = texel.s[j]; |
| 658 | uint32_t At = texel.c[0]; |
| 659 | uint8_t sat = texel.s[0]; |
| 660 | switch (tx.env) { |
| 661 | case GGL_REPLACE: |
| 662 | if (st) { |
| 663 | Cf = Ct; |
| 664 | sf = st; |
| 665 | } |
| 666 | break; |
| 667 | case GGL_MODULATE: |
| 668 | if (st) { |
| 669 | uint32_t factor = Ct + (Ct>>(st-1)); |
| 670 | Cf = (Cf * factor) >> st; |
| 671 | } |
| 672 | break; |
| 673 | case GGL_DECAL: |
| 674 | if (sat) { |
| 675 | rescale(Cf, sf, Ct, st); |
| 676 | Cf += ((Ct - Cf) * (At + (At>>(sat-1)))) >> sat; |
| 677 | } |
| 678 | break; |
| 679 | case GGL_BLEND: |
| 680 | if (st) { |
| 681 | uint32_t Cc = tx.env_color[i]; |
| 682 | if (sf>8) Cc = (Cc * ((1<<sf)-1))>>8; |
| 683 | else if (sf<8) Cc = (Cc - (Cc>>(8-sf)))>>(8-sf); |
| 684 | uint32_t factor = Ct + (Ct>>(st-1)); |
| 685 | Cf = ((((1<<st) - factor) * Cf) + Ct*Cc)>>st; |
| 686 | } |
| 687 | break; |
| 688 | case GGL_ADD: |
| 689 | if (st) { |
| 690 | rescale(Cf, sf, Ct, st); |
| 691 | Cf += Ct; |
| 692 | } |
| 693 | break; |
| 694 | } |
| 695 | } |
| 696 | } |
| 697 | } |
| 698 | |
| 699 | // coverage application |
| 700 | if (enables & GGL_ENABLE_AA) { |
| 701 | int16_t cf = *covPtr++; |
| 702 | fragment.c[0] = (int64_t(fragment.c[0]) * cf) >> 15; |
| 703 | } |
| 704 | |
| 705 | // alpha-test |
| 706 | if (enables & GGL_ENABLE_ALPHA_TEST) { |
| 707 | GGLcolor ref = c->state.alpha_test.ref; |
| 708 | GGLcolor alpha = (uint64_t(fragment.c[0]) * |
| 709 | ((1<<GGL_COLOR_BITS)-1)) / ((1<<fragment.s[0])-1); |
| 710 | switch (c->state.alpha_test.func) { |
| 711 | case GGL_NEVER: goto discard; |
| 712 | case GGL_LESS: if (alpha<ref) break; goto discard; |
| 713 | case GGL_EQUAL: if (alpha==ref) break; goto discard; |
| 714 | case GGL_LEQUAL: if (alpha<=ref) break; goto discard; |
| 715 | case GGL_GREATER: if (alpha>ref) break; goto discard; |
| 716 | case GGL_NOTEQUAL: if (alpha!=ref) break; goto discard; |
| 717 | case GGL_GEQUAL: if (alpha>=ref) break; goto discard; |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | // depth test |
| 722 | if (c->state.buffers.depth.format) { |
| 723 | if (enables & GGL_ENABLE_DEPTH_TEST) { |
| 724 | surface_t* cb = &(c->state.buffers.depth); |
| 725 | uint16_t* p = (uint16_t*)(cb->data)+(x+(cb->stride*y)); |
| 726 | uint16_t zz = uint32_t(z)>>(16); |
| 727 | uint16_t depth = *p; |
| 728 | switch (c->state.depth_test.func) { |
| 729 | case GGL_NEVER: goto discard; |
| 730 | case GGL_LESS: if (zz<depth) break; goto discard; |
| 731 | case GGL_EQUAL: if (zz==depth) break; goto discard; |
| 732 | case GGL_LEQUAL: if (zz<=depth) break; goto discard; |
| 733 | case GGL_GREATER: if (zz>depth) break; goto discard; |
| 734 | case GGL_NOTEQUAL: if (zz!=depth) break; goto discard; |
| 735 | case GGL_GEQUAL: if (zz>=depth) break; goto discard; |
| 736 | } |
| 737 | // depth buffer is not enabled, if depth-test is not enabled |
| 738 | /* |
| 739 | fragment.s[1] = fragment.s[2] = |
| 740 | fragment.s[3] = fragment.s[0] = 8; |
| 741 | fragment.c[1] = |
| 742 | fragment.c[2] = |
| 743 | fragment.c[3] = |
| 744 | fragment.c[0] = 255 - (zz>>8); |
| 745 | */ |
| 746 | if (c->state.mask.depth) { |
| 747 | *p = zz; |
| 748 | } |
| 749 | } |
| 750 | } |
| 751 | |
| 752 | // fog |
| 753 | if (enables & GGL_ENABLE_FOG) { |
| 754 | for (int i=1 ; i<=3 ; i++) { |
| 755 | GGLfixed fc = (c->state.fog.color[i] * 0x10000) / 0xFF; |
| 756 | uint32_t& c = fragment.c[i]; |
| 757 | uint8_t& s = fragment.s[i]; |
| 758 | c = (c * 0x10000) / ((1<<s)-1); |
| 759 | c = gglMulAddx(c, f, gglMulx(fc, 0x10000 - f)); |
| 760 | s = 16; |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | // blending |
| 765 | if (enables & GGL_ENABLE_BLENDING) { |
| 766 | fb.c[1] = fb.c[2] = fb.c[3] = fb.c[0] = 0; // placate valgrind |
| 767 | fb.s[1] = fb.s[2] = fb.s[3] = fb.s[0] = 0; |
| 768 | c->state.buffers.color.read( |
| 769 | &(c->state.buffers.color), c, x, y, &fb); |
| 770 | blending( c, &fragment, &fb ); |
| 771 | } |
| 772 | |
| 773 | // write |
| 774 | c->state.buffers.color.write( |
| 775 | &(c->state.buffers.color), c, x, y, &fragment); |
| 776 | } |
| 777 | |
| 778 | discard: |
| 779 | // iterate... |
| 780 | x += 1; |
| 781 | if (enables & GGL_ENABLE_SMOOTH) { |
| 782 | r += c->shade.drdx; |
| 783 | g += c->shade.dgdx; |
| 784 | b += c->shade.dbdx; |
| 785 | a += c->shade.dadx; |
| 786 | } |
| 787 | z += c->shade.dzdx; |
| 788 | f += c->shade.dfdx; |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | #endif // ANDROID_ARM_CODEGEN && (ANDROID_CODEGEN == ANDROID_CODEGEN_GENERATED) |
| 793 | |
| 794 | // ---------------------------------------------------------------------------- |
| 795 | #if 0 |
| 796 | #pragma mark - |
| 797 | #pragma mark Scanline |
| 798 | #endif |
| 799 | |
| 800 | template <typename T, typename U> |
| 801 | static inline __attribute__((const)) |
| 802 | T interpolate(int y, T v0, U dvdx, U dvdy) { |
| 803 | // interpolates in pixel's centers |
| 804 | // v = v0 + (y + 0.5) * dvdy + (0.5 * dvdx) |
| 805 | return (y * dvdy) + (v0 + ((dvdy + dvdx) >> 1)); |
| 806 | } |
| 807 | |
| 808 | // ---------------------------------------------------------------------------- |
| 809 | #if 0 |
| 810 | #pragma mark - |
| 811 | #endif |
| 812 | |
| 813 | void init_y(context_t* c, int32_t ys) |
| 814 | { |
| 815 | const uint32_t enables = c->state.enables; |
| 816 | |
| 817 | // compute iterators... |
| 818 | iterators_t& ci = c->iterators; |
| 819 | |
| 820 | // sample in the center |
| 821 | ci.y = ys; |
| 822 | |
| 823 | if (enables & (GGL_ENABLE_DEPTH_TEST|GGL_ENABLE_W|GGL_ENABLE_FOG)) { |
| 824 | ci.ydzdy = interpolate(ys, c->shade.z0, c->shade.dzdx, c->shade.dzdy); |
| 825 | ci.ydwdy = interpolate(ys, c->shade.w0, c->shade.dwdx, c->shade.dwdy); |
| 826 | ci.ydfdy = interpolate(ys, c->shade.f0, c->shade.dfdx, c->shade.dfdy); |
| 827 | } |
| 828 | |
| 829 | if (ggl_unlikely(enables & GGL_ENABLE_SMOOTH)) { |
| 830 | ci.ydrdy = interpolate(ys, c->shade.r0, c->shade.drdx, c->shade.drdy); |
| 831 | ci.ydgdy = interpolate(ys, c->shade.g0, c->shade.dgdx, c->shade.dgdy); |
| 832 | ci.ydbdy = interpolate(ys, c->shade.b0, c->shade.dbdx, c->shade.dbdy); |
| 833 | ci.ydady = interpolate(ys, c->shade.a0, c->shade.dadx, c->shade.dady); |
| 834 | c->step_y = step_y__smooth; |
| 835 | } else { |
| 836 | ci.ydrdy = c->shade.r0; |
| 837 | ci.ydgdy = c->shade.g0; |
| 838 | ci.ydbdy = c->shade.b0; |
| 839 | ci.ydady = c->shade.a0; |
| 840 | // XXX: do only if needed, or make sure this is fast |
| 841 | c->packed = ggl_pack_color(c, c->state.buffers.color.format, |
| 842 | ci.ydrdy, ci.ydgdy, ci.ydbdy, ci.ydady); |
| 843 | c->packed8888 = ggl_pack_color(c, GGL_PIXEL_FORMAT_RGBA_8888, |
| 844 | ci.ydrdy, ci.ydgdy, ci.ydbdy, ci.ydady); |
| 845 | } |
| 846 | |
| 847 | // initialize the variables we need in the shader |
| 848 | generated_vars_t& gen = c->generated_vars; |
| 849 | gen.argb[GGLFormat::ALPHA].c = ci.ydady; |
| 850 | gen.argb[GGLFormat::ALPHA].dx = c->shade.dadx; |
| 851 | gen.argb[GGLFormat::RED ].c = ci.ydrdy; |
| 852 | gen.argb[GGLFormat::RED ].dx = c->shade.drdx; |
| 853 | gen.argb[GGLFormat::GREEN].c = ci.ydgdy; |
| 854 | gen.argb[GGLFormat::GREEN].dx = c->shade.dgdx; |
| 855 | gen.argb[GGLFormat::BLUE ].c = ci.ydbdy; |
| 856 | gen.argb[GGLFormat::BLUE ].dx = c->shade.dbdx; |
| 857 | gen.dzdx = c->shade.dzdx; |
| 858 | gen.f = ci.ydfdy; |
| 859 | gen.dfdx = c->shade.dfdx; |
| 860 | |
| 861 | if (enables & GGL_ENABLE_TMUS) { |
| 862 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) { |
| 863 | texture_t& t = c->state.texture[i]; |
| 864 | if (!t.enable) continue; |
| 865 | |
| 866 | texture_iterators_t& ti = t.iterators; |
| 867 | if (t.s_coord == GGL_ONE_TO_ONE && t.t_coord == GGL_ONE_TO_ONE) { |
| 868 | // we need to set all of these to 0 because in some cases |
| 869 | // step_y__generic() or step_y__tmu() will be used and |
| 870 | // therefore will update dtdy, however, in 1:1 mode |
| 871 | // this is always done by the scanline rasterizer. |
| 872 | ti.dsdx = ti.dsdy = ti.dtdx = ti.dtdy = 0; |
| 873 | ti.ydsdy = t.shade.is0; |
| 874 | ti.ydtdy = t.shade.it0; |
| 875 | } else { |
| 876 | const int adjustSWrap = ((t.s_wrap==GGL_CLAMP)?0:16); |
| 877 | const int adjustTWrap = ((t.t_wrap==GGL_CLAMP)?0:16); |
| 878 | ti.sscale = t.shade.sscale + adjustSWrap; |
| 879 | ti.tscale = t.shade.tscale + adjustTWrap; |
| 880 | if (!(enables & GGL_ENABLE_W)) { |
| 881 | // S coordinate |
| 882 | const int32_t sscale = ti.sscale; |
| 883 | const int32_t sy = interpolate(ys, |
| 884 | t.shade.is0, t.shade.idsdx, t.shade.idsdy); |
| 885 | if (sscale>=0) { |
| 886 | ti.ydsdy= sy << sscale; |
| 887 | ti.dsdx = t.shade.idsdx << sscale; |
| 888 | ti.dsdy = t.shade.idsdy << sscale; |
| 889 | } else { |
| 890 | ti.ydsdy= sy >> -sscale; |
| 891 | ti.dsdx = t.shade.idsdx >> -sscale; |
| 892 | ti.dsdy = t.shade.idsdy >> -sscale; |
| 893 | } |
| 894 | // T coordinate |
| 895 | const int32_t tscale = ti.tscale; |
| 896 | const int32_t ty = interpolate(ys, |
| 897 | t.shade.it0, t.shade.idtdx, t.shade.idtdy); |
| 898 | if (tscale>=0) { |
| 899 | ti.ydtdy= ty << tscale; |
| 900 | ti.dtdx = t.shade.idtdx << tscale; |
| 901 | ti.dtdy = t.shade.idtdy << tscale; |
| 902 | } else { |
| 903 | ti.ydtdy= ty >> -tscale; |
| 904 | ti.dtdx = t.shade.idtdx >> -tscale; |
| 905 | ti.dtdy = t.shade.idtdy >> -tscale; |
| 906 | } |
| 907 | } |
| 908 | } |
| 909 | // mirror for generated code... |
| 910 | generated_tex_vars_t& gen = c->generated_vars.texture[i]; |
| 911 | gen.width = t.surface.width; |
| 912 | gen.height = t.surface.height; |
| 913 | gen.stride = t.surface.stride; |
| 914 | gen.data = int32_t(t.surface.data); |
| 915 | gen.dsdx = ti.dsdx; |
| 916 | gen.dtdx = ti.dtdx; |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | // choose the y-stepper |
| 921 | c->step_y = step_y__nop; |
| 922 | if (enables & GGL_ENABLE_FOG) { |
| 923 | c->step_y = step_y__generic; |
| 924 | } else if (enables & GGL_ENABLE_TMUS) { |
| 925 | if (enables & GGL_ENABLE_SMOOTH) { |
| 926 | c->step_y = step_y__generic; |
| 927 | } else if (enables & GGL_ENABLE_W) { |
| 928 | c->step_y = step_y__w; |
| 929 | } else { |
| 930 | c->step_y = step_y__tmu; |
| 931 | } |
| 932 | } else { |
| 933 | if (enables & GGL_ENABLE_SMOOTH) { |
| 934 | c->step_y = step_y__smooth; |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | // choose the rectangle blitter |
| 939 | c->rect = rect_generic; |
| 940 | if ((c->step_y == step_y__nop) && |
| 941 | (c->scanline == scanline_memcpy)) |
| 942 | { |
| 943 | c->rect = rect_memcpy; |
| 944 | } |
| 945 | } |
| 946 | |
| 947 | void init_y_packed(context_t* c, int32_t y0) |
| 948 | { |
| 949 | uint8_t f = c->state.buffers.color.format; |
| 950 | c->packed = ggl_pack_color(c, f, |
| 951 | c->shade.r0, c->shade.g0, c->shade.b0, c->shade.a0); |
Martyn Capewell | f9e8ab0 | 2009-12-07 15:00:19 +0000 | [diff] [blame^] | 952 | c->packed8888 = ggl_pack_color(c, GGL_PIXEL_FORMAT_RGBA_8888, |
| 953 | c->shade.r0, c->shade.g0, c->shade.b0, c->shade.a0); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 954 | c->iterators.y = y0; |
| 955 | c->step_y = step_y__nop; |
| 956 | // choose the rectangle blitter |
| 957 | c->rect = rect_generic; |
| 958 | if (c->scanline == scanline_memcpy) { |
| 959 | c->rect = rect_memcpy; |
| 960 | } |
| 961 | } |
| 962 | |
| 963 | void init_y_noop(context_t* c, int32_t y0) |
| 964 | { |
| 965 | c->iterators.y = y0; |
| 966 | c->step_y = step_y__nop; |
| 967 | // choose the rectangle blitter |
| 968 | c->rect = rect_generic; |
| 969 | if (c->scanline == scanline_memcpy) { |
| 970 | c->rect = rect_memcpy; |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | void init_y_error(context_t* c, int32_t y0) |
| 975 | { |
| 976 | // woooops, shoud never happen, |
| 977 | // fail gracefully (don't display anything) |
| 978 | init_y_noop(c, y0); |
| 979 | LOGE("color-buffer has an invalid format!"); |
| 980 | } |
| 981 | |
| 982 | // ---------------------------------------------------------------------------- |
| 983 | #if 0 |
| 984 | #pragma mark - |
| 985 | #endif |
| 986 | |
| 987 | void step_y__generic(context_t* c) |
| 988 | { |
| 989 | const uint32_t enables = c->state.enables; |
| 990 | |
| 991 | // iterate... |
| 992 | iterators_t& ci = c->iterators; |
| 993 | ci.y += 1; |
| 994 | |
| 995 | if (enables & GGL_ENABLE_SMOOTH) { |
| 996 | ci.ydrdy += c->shade.drdy; |
| 997 | ci.ydgdy += c->shade.dgdy; |
| 998 | ci.ydbdy += c->shade.dbdy; |
| 999 | ci.ydady += c->shade.dady; |
| 1000 | } |
| 1001 | |
| 1002 | const uint32_t mask = |
| 1003 | GGL_ENABLE_DEPTH_TEST | |
| 1004 | GGL_ENABLE_W | |
| 1005 | GGL_ENABLE_FOG; |
| 1006 | if (enables & mask) { |
| 1007 | ci.ydzdy += c->shade.dzdy; |
| 1008 | ci.ydwdy += c->shade.dwdy; |
| 1009 | ci.ydfdy += c->shade.dfdy; |
| 1010 | } |
| 1011 | |
| 1012 | if ((enables & GGL_ENABLE_TMUS) && (!(enables & GGL_ENABLE_W))) { |
| 1013 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) { |
| 1014 | if (c->state.texture[i].enable) { |
| 1015 | texture_iterators_t& ti = c->state.texture[i].iterators; |
| 1016 | ti.ydsdy += ti.dsdy; |
| 1017 | ti.ydtdy += ti.dtdy; |
| 1018 | } |
| 1019 | } |
| 1020 | } |
| 1021 | } |
| 1022 | |
| 1023 | void step_y__nop(context_t* c) |
| 1024 | { |
| 1025 | c->iterators.y += 1; |
| 1026 | c->iterators.ydzdy += c->shade.dzdy; |
| 1027 | } |
| 1028 | |
| 1029 | void step_y__smooth(context_t* c) |
| 1030 | { |
| 1031 | iterators_t& ci = c->iterators; |
| 1032 | ci.y += 1; |
| 1033 | ci.ydrdy += c->shade.drdy; |
| 1034 | ci.ydgdy += c->shade.dgdy; |
| 1035 | ci.ydbdy += c->shade.dbdy; |
| 1036 | ci.ydady += c->shade.dady; |
| 1037 | ci.ydzdy += c->shade.dzdy; |
| 1038 | } |
| 1039 | |
| 1040 | void step_y__w(context_t* c) |
| 1041 | { |
| 1042 | iterators_t& ci = c->iterators; |
| 1043 | ci.y += 1; |
| 1044 | ci.ydzdy += c->shade.dzdy; |
| 1045 | ci.ydwdy += c->shade.dwdy; |
| 1046 | } |
| 1047 | |
| 1048 | void step_y__tmu(context_t* c) |
| 1049 | { |
| 1050 | iterators_t& ci = c->iterators; |
| 1051 | ci.y += 1; |
| 1052 | ci.ydzdy += c->shade.dzdy; |
| 1053 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) { |
| 1054 | if (c->state.texture[i].enable) { |
| 1055 | texture_iterators_t& ti = c->state.texture[i].iterators; |
| 1056 | ti.ydsdy += ti.dsdy; |
| 1057 | ti.ydtdy += ti.dtdy; |
| 1058 | } |
| 1059 | } |
| 1060 | } |
| 1061 | |
| 1062 | // ---------------------------------------------------------------------------- |
| 1063 | #if 0 |
| 1064 | #pragma mark - |
| 1065 | #endif |
| 1066 | |
| 1067 | void scanline_perspective(context_t* c) |
| 1068 | { |
| 1069 | struct { |
| 1070 | union { |
| 1071 | struct { |
| 1072 | int32_t s, sq; |
| 1073 | int32_t t, tq; |
| 1074 | }; |
| 1075 | struct { |
| 1076 | int32_t v, q; |
| 1077 | } st[2]; |
| 1078 | }; |
| 1079 | } tc[GGL_TEXTURE_UNIT_COUNT] __attribute__((aligned(16))); |
| 1080 | |
| 1081 | // XXX: we should have a special case when dwdx = 0 |
| 1082 | |
| 1083 | // 32 pixels spans works okay. 16 is a lot better, |
| 1084 | // but hey, it's a software renderer... |
| 1085 | const uint32_t SPAN_BITS = 5; |
| 1086 | const uint32_t ys = c->iterators.y; |
| 1087 | const uint32_t xs = c->iterators.xl; |
| 1088 | const uint32_t x1 = c->iterators.xr; |
| 1089 | const uint32_t xc = x1 - xs; |
| 1090 | uint32_t remainder = xc & ((1<<SPAN_BITS)-1); |
| 1091 | uint32_t numSpans = xc >> SPAN_BITS; |
| 1092 | |
| 1093 | const iterators_t& ci = c->iterators; |
| 1094 | int32_t w0 = (xs * c->shade.dwdx) + ci.ydwdy; |
| 1095 | int32_t q0 = gglRecipQ(w0, 30); |
| 1096 | const int iwscale = 32 - gglClz(q0); |
| 1097 | |
| 1098 | const int32_t dwdx = c->shade.dwdx << SPAN_BITS; |
| 1099 | int32_t xl = c->iterators.xl; |
| 1100 | |
| 1101 | // We process s & t with a loop to reduce the code size |
| 1102 | // (and i-cache pressure). |
| 1103 | |
| 1104 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) { |
| 1105 | const texture_t& tmu = c->state.texture[i]; |
| 1106 | if (!tmu.enable) continue; |
| 1107 | int32_t s = tmu.shade.is0 + |
| 1108 | (tmu.shade.idsdy * ys) + (tmu.shade.idsdx * xs) + |
| 1109 | ((tmu.shade.idsdx + tmu.shade.idsdy)>>1); |
| 1110 | int32_t t = tmu.shade.it0 + |
| 1111 | (tmu.shade.idtdy * ys) + (tmu.shade.idtdx * xs) + |
| 1112 | ((tmu.shade.idtdx + tmu.shade.idtdy)>>1); |
| 1113 | tc[i].s = s; |
| 1114 | tc[i].t = t; |
| 1115 | tc[i].sq = gglMulx(s, q0, iwscale); |
| 1116 | tc[i].tq = gglMulx(t, q0, iwscale); |
| 1117 | } |
| 1118 | |
| 1119 | int32_t span = 0; |
| 1120 | do { |
| 1121 | int32_t w1; |
| 1122 | if (ggl_likely(numSpans)) { |
| 1123 | w1 = w0 + dwdx; |
| 1124 | } else { |
| 1125 | if (remainder) { |
| 1126 | // finish off the scanline... |
| 1127 | span = remainder; |
| 1128 | w1 = (c->shade.dwdx * span) + w0; |
| 1129 | } else { |
| 1130 | break; |
| 1131 | } |
| 1132 | } |
| 1133 | int32_t q1 = gglRecipQ(w1, 30); |
| 1134 | for (int i=0 ; i<GGL_TEXTURE_UNIT_COUNT ; ++i) { |
| 1135 | texture_t& tmu = c->state.texture[i]; |
| 1136 | if (!tmu.enable) continue; |
| 1137 | texture_iterators_t& ti = tmu.iterators; |
| 1138 | |
| 1139 | for (int j=0 ; j<2 ; j++) { |
| 1140 | int32_t v = tc[i].st[j].v; |
| 1141 | if (span) v += (tmu.shade.st[j].dx)*span; |
| 1142 | else v += (tmu.shade.st[j].dx)<<SPAN_BITS; |
| 1143 | const int32_t v0 = tc[i].st[j].q; |
| 1144 | const int32_t v1 = gglMulx(v, q1, iwscale); |
| 1145 | int32_t dvdx = v1 - v0; |
| 1146 | if (span) dvdx /= span; |
| 1147 | else dvdx >>= SPAN_BITS; |
| 1148 | tc[i].st[j].v = v; |
| 1149 | tc[i].st[j].q = v1; |
| 1150 | |
| 1151 | const int scale = ti.st[j].scale + (iwscale - 30); |
| 1152 | if (scale >= 0) { |
| 1153 | ti.st[j].ydvdy = v0 << scale; |
| 1154 | ti.st[j].dvdx = dvdx << scale; |
| 1155 | } else { |
| 1156 | ti.st[j].ydvdy = v0 >> -scale; |
| 1157 | ti.st[j].dvdx = dvdx >> -scale; |
| 1158 | } |
| 1159 | } |
| 1160 | generated_tex_vars_t& gen = c->generated_vars.texture[i]; |
| 1161 | gen.dsdx = ti.st[0].dvdx; |
| 1162 | gen.dtdx = ti.st[1].dvdx; |
| 1163 | } |
| 1164 | c->iterators.xl = xl; |
| 1165 | c->iterators.xr = xl = xl + (span ? span : (1<<SPAN_BITS)); |
| 1166 | w0 = w1; |
| 1167 | q0 = q1; |
| 1168 | c->span(c); |
| 1169 | } while(numSpans--); |
| 1170 | } |
| 1171 | |
| 1172 | void scanline_perspective_single(context_t* c) |
| 1173 | { |
| 1174 | // 32 pixels spans works okay. 16 is a lot better, |
| 1175 | // but hey, it's a software renderer... |
| 1176 | const uint32_t SPAN_BITS = 5; |
| 1177 | const uint32_t ys = c->iterators.y; |
| 1178 | const uint32_t xs = c->iterators.xl; |
| 1179 | const uint32_t x1 = c->iterators.xr; |
| 1180 | const uint32_t xc = x1 - xs; |
| 1181 | |
| 1182 | const iterators_t& ci = c->iterators; |
| 1183 | int32_t w = (xs * c->shade.dwdx) + ci.ydwdy; |
| 1184 | int32_t iw = gglRecipQ(w, 30); |
| 1185 | const int iwscale = 32 - gglClz(iw); |
| 1186 | |
| 1187 | const int i = 31 - gglClz(c->state.enabled_tmu); |
| 1188 | generated_tex_vars_t& gen = c->generated_vars.texture[i]; |
| 1189 | texture_t& tmu = c->state.texture[i]; |
| 1190 | texture_iterators_t& ti = tmu.iterators; |
| 1191 | const int sscale = ti.sscale + (iwscale - 30); |
| 1192 | const int tscale = ti.tscale + (iwscale - 30); |
| 1193 | int32_t s = tmu.shade.is0 + |
| 1194 | (tmu.shade.idsdy * ys) + (tmu.shade.idsdx * xs) + |
| 1195 | ((tmu.shade.idsdx + tmu.shade.idsdy)>>1); |
| 1196 | int32_t t = tmu.shade.it0 + |
| 1197 | (tmu.shade.idtdy * ys) + (tmu.shade.idtdx * xs) + |
| 1198 | ((tmu.shade.idtdx + tmu.shade.idtdy)>>1); |
| 1199 | int32_t s0 = gglMulx(s, iw, iwscale); |
| 1200 | int32_t t0 = gglMulx(t, iw, iwscale); |
| 1201 | int32_t xl = c->iterators.xl; |
| 1202 | |
| 1203 | int32_t sq, tq, dsdx, dtdx; |
| 1204 | int32_t premainder = xc & ((1<<SPAN_BITS)-1); |
| 1205 | uint32_t numSpans = xc >> SPAN_BITS; |
| 1206 | if (c->shade.dwdx == 0) { |
| 1207 | // XXX: we could choose to do this if the error is small enough |
| 1208 | numSpans = 0; |
| 1209 | premainder = xc; |
| 1210 | goto no_perspective; |
| 1211 | } |
| 1212 | |
| 1213 | if (premainder) { |
| 1214 | w += c->shade.dwdx * premainder; |
| 1215 | iw = gglRecipQ(w, 30); |
| 1216 | no_perspective: |
| 1217 | s += tmu.shade.idsdx * premainder; |
| 1218 | t += tmu.shade.idtdx * premainder; |
| 1219 | sq = gglMulx(s, iw, iwscale); |
| 1220 | tq = gglMulx(t, iw, iwscale); |
| 1221 | dsdx = (sq - s0) / premainder; |
| 1222 | dtdx = (tq - t0) / premainder; |
| 1223 | c->iterators.xl = xl; |
| 1224 | c->iterators.xr = xl = xl + premainder; |
| 1225 | goto finish; |
| 1226 | } |
| 1227 | |
| 1228 | while (numSpans--) { |
| 1229 | w += c->shade.dwdx << SPAN_BITS; |
| 1230 | s += tmu.shade.idsdx << SPAN_BITS; |
| 1231 | t += tmu.shade.idtdx << SPAN_BITS; |
| 1232 | iw = gglRecipQ(w, 30); |
| 1233 | sq = gglMulx(s, iw, iwscale); |
| 1234 | tq = gglMulx(t, iw, iwscale); |
| 1235 | dsdx = (sq - s0) >> SPAN_BITS; |
| 1236 | dtdx = (tq - t0) >> SPAN_BITS; |
| 1237 | c->iterators.xl = xl; |
| 1238 | c->iterators.xr = xl = xl + (1<<SPAN_BITS); |
| 1239 | finish: |
| 1240 | if (sscale >= 0) { |
| 1241 | ti.ydsdy = s0 << sscale; |
| 1242 | ti.dsdx = dsdx << sscale; |
| 1243 | } else { |
| 1244 | ti.ydsdy = s0 >>-sscale; |
| 1245 | ti.dsdx = dsdx >>-sscale; |
| 1246 | } |
| 1247 | if (tscale >= 0) { |
| 1248 | ti.ydtdy = t0 << tscale; |
| 1249 | ti.dtdx = dtdx << tscale; |
| 1250 | } else { |
| 1251 | ti.ydtdy = t0 >>-tscale; |
| 1252 | ti.dtdx = dtdx >>-tscale; |
| 1253 | } |
| 1254 | s0 = sq; |
| 1255 | t0 = tq; |
| 1256 | gen.dsdx = ti.dsdx; |
| 1257 | gen.dtdx = ti.dtdx; |
| 1258 | c->span(c); |
| 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | // ---------------------------------------------------------------------------- |
| 1263 | |
Martyn Capewell | f9e8ab0 | 2009-12-07 15:00:19 +0000 | [diff] [blame^] | 1264 | void scanline_col32cb16blend(context_t* c) |
| 1265 | { |
| 1266 | int32_t x = c->iterators.xl; |
| 1267 | size_t ct = c->iterators.xr - x; |
| 1268 | int32_t y = c->iterators.y; |
| 1269 | surface_t* cb = &(c->state.buffers.color); |
| 1270 | union { |
| 1271 | uint16_t* dst; |
| 1272 | uint32_t* dst32; |
| 1273 | }; |
| 1274 | dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y)); |
| 1275 | |
| 1276 | #if ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && defined(__arm__)) |
| 1277 | #if defined(__ARM_HAVE_NEON) && BYTE_ORDER == LITTLE_ENDIAN |
| 1278 | scanline_col32cb16blend_neon(dst, &(c->packed8888), ct); |
| 1279 | #else // defined(__ARM_HAVE_NEON) && BYTE_ORDER == LITTLE_ENDIAN |
| 1280 | scanline_col32cb16blend_arm(dst, GGL_RGBA_TO_HOST(c->packed8888), ct); |
| 1281 | #endif // defined(__ARM_HAVE_NEON) && BYTE_ORDER == LITTLE_ENDIAN |
| 1282 | #else |
| 1283 | uint32_t s = GGL_RGBA_TO_HOST(c->packed8888); |
| 1284 | int sA = (s>>24); |
| 1285 | int f = 0x100 - (sA + (sA>>7)); |
| 1286 | while (ct--) { |
| 1287 | uint16_t d = *dst; |
| 1288 | int dR = (d>>11)&0x1f; |
| 1289 | int dG = (d>>5)&0x3f; |
| 1290 | int dB = (d)&0x1f; |
| 1291 | int sR = (s >> ( 3))&0x1F; |
| 1292 | int sG = (s >> ( 8+2))&0x3F; |
| 1293 | int sB = (s >> (16+3))&0x1F; |
| 1294 | sR += (f*dR)>>8; |
| 1295 | sG += (f*dG)>>8; |
| 1296 | sB += (f*dB)>>8; |
| 1297 | *dst++ = uint16_t((sR<<11)|(sG<<5)|sB); |
| 1298 | } |
| 1299 | #endif |
| 1300 | |
| 1301 | } |
| 1302 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1303 | void scanline_t32cb16(context_t* c) |
| 1304 | { |
| 1305 | int32_t x = c->iterators.xl; |
| 1306 | size_t ct = c->iterators.xr - x; |
| 1307 | int32_t y = c->iterators.y; |
| 1308 | surface_t* cb = &(c->state.buffers.color); |
| 1309 | union { |
| 1310 | uint16_t* dst; |
| 1311 | uint32_t* dst32; |
| 1312 | }; |
| 1313 | dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y)); |
| 1314 | |
| 1315 | surface_t* tex = &(c->state.texture[0].surface); |
| 1316 | const int32_t u = (c->state.texture[0].shade.is0>>16) + x; |
| 1317 | const int32_t v = (c->state.texture[0].shade.it0>>16) + y; |
| 1318 | uint32_t *src = reinterpret_cast<uint32_t*>(tex->data)+(u+(tex->stride*v)); |
| 1319 | int sR, sG, sB; |
| 1320 | uint32_t s, d; |
| 1321 | |
| 1322 | if (ct==1 || uint32_t(dst)&2) { |
| 1323 | last_one: |
| 1324 | s = GGL_RGBA_TO_HOST( *src++ ); |
| 1325 | sR = (s >> ( 3))&0x1F; |
| 1326 | sG = (s >> ( 8+2))&0x3F; |
| 1327 | sB = (s >> (16+3))&0x1F; |
| 1328 | *dst++ = uint16_t((sR<<11)|(sG<<5)|sB); |
| 1329 | ct--; |
| 1330 | } |
| 1331 | |
| 1332 | while (ct >= 2) { |
| 1333 | s = GGL_RGBA_TO_HOST( *src++ ); |
| 1334 | sR = (s >> ( 3))&0x1F; |
| 1335 | sG = (s >> ( 8+2))&0x3F; |
| 1336 | sB = (s >> (16+3))&0x1F; |
| 1337 | d = (sR<<11)|(sG<<5)|sB; |
| 1338 | |
| 1339 | s = GGL_RGBA_TO_HOST( *src++ ); |
| 1340 | sR = (s >> ( 3))&0x1F; |
| 1341 | sG = (s >> ( 8+2))&0x3F; |
| 1342 | sB = (s >> (16+3))&0x1F; |
| 1343 | d |= ((sR<<11)|(sG<<5)|sB)<<16; |
| 1344 | |
| 1345 | #if BYTE_ORDER == BIG_ENDIAN |
| 1346 | d = (d>>16) | (d<<16); |
| 1347 | #endif |
| 1348 | |
| 1349 | *dst32++ = d; |
| 1350 | ct -= 2; |
| 1351 | } |
| 1352 | |
| 1353 | if (ct > 0) { |
| 1354 | goto last_one; |
| 1355 | } |
| 1356 | } |
| 1357 | |
| 1358 | void scanline_t32cb16blend(context_t* c) |
| 1359 | { |
| 1360 | int32_t x = c->iterators.xl; |
| 1361 | size_t ct = c->iterators.xr - x; |
| 1362 | int32_t y = c->iterators.y; |
| 1363 | surface_t* cb = &(c->state.buffers.color); |
| 1364 | uint16_t* dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y)); |
| 1365 | |
| 1366 | surface_t* tex = &(c->state.texture[0].surface); |
| 1367 | const int32_t u = (c->state.texture[0].shade.is0>>16) + x; |
| 1368 | const int32_t v = (c->state.texture[0].shade.it0>>16) + y; |
| 1369 | uint32_t *src = reinterpret_cast<uint32_t*>(tex->data)+(u+(tex->stride*v)); |
| 1370 | |
| 1371 | #if ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && defined(__arm__)) |
| 1372 | scanline_t32cb16blend_arm(dst, src, ct); |
| 1373 | #else |
| 1374 | while (ct--) { |
| 1375 | uint32_t s = *src++; |
| 1376 | if (!s) { |
| 1377 | dst++; |
| 1378 | continue; |
| 1379 | } |
| 1380 | uint16_t d = *dst; |
| 1381 | s = GGL_RGBA_TO_HOST(s); |
| 1382 | int sR = (s >> ( 3))&0x1F; |
| 1383 | int sG = (s >> ( 8+2))&0x3F; |
| 1384 | int sB = (s >> (16+3))&0x1F; |
| 1385 | int sA = (s>>24); |
| 1386 | int f = 0x100 - (sA + (sA>>7)); |
| 1387 | int dR = (d>>11)&0x1f; |
| 1388 | int dG = (d>>5)&0x3f; |
| 1389 | int dB = (d)&0x1f; |
| 1390 | sR += (f*dR)>>8; |
| 1391 | sG += (f*dG)>>8; |
| 1392 | sB += (f*dB)>>8; |
| 1393 | *dst++ = uint16_t((sR<<11)|(sG<<5)|sB); |
| 1394 | } |
| 1395 | #endif |
| 1396 | } |
| 1397 | |
| 1398 | void scanline_memcpy(context_t* c) |
| 1399 | { |
| 1400 | int32_t x = c->iterators.xl; |
| 1401 | size_t ct = c->iterators.xr - x; |
| 1402 | int32_t y = c->iterators.y; |
| 1403 | surface_t* cb = &(c->state.buffers.color); |
| 1404 | const GGLFormat* fp = &(c->formats[cb->format]); |
| 1405 | uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) + |
| 1406 | (x + (cb->stride * y)) * fp->size; |
| 1407 | |
| 1408 | surface_t* tex = &(c->state.texture[0].surface); |
| 1409 | const int32_t u = (c->state.texture[0].shade.is0>>16) + x; |
| 1410 | const int32_t v = (c->state.texture[0].shade.it0>>16) + y; |
| 1411 | uint8_t *src = reinterpret_cast<uint8_t*>(tex->data) + |
| 1412 | (u + (tex->stride * v)) * fp->size; |
| 1413 | |
| 1414 | const size_t size = ct * fp->size; |
| 1415 | memcpy(dst, src, size); |
| 1416 | } |
| 1417 | |
| 1418 | void scanline_memset8(context_t* c) |
| 1419 | { |
| 1420 | int32_t x = c->iterators.xl; |
| 1421 | size_t ct = c->iterators.xr - x; |
| 1422 | int32_t y = c->iterators.y; |
| 1423 | surface_t* cb = &(c->state.buffers.color); |
| 1424 | uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) + (x+(cb->stride*y)); |
| 1425 | uint32_t packed = c->packed; |
| 1426 | memset(dst, packed, ct); |
| 1427 | } |
| 1428 | |
| 1429 | void scanline_memset16(context_t* c) |
| 1430 | { |
| 1431 | int32_t x = c->iterators.xl; |
| 1432 | size_t ct = c->iterators.xr - x; |
| 1433 | int32_t y = c->iterators.y; |
| 1434 | surface_t* cb = &(c->state.buffers.color); |
| 1435 | uint16_t* dst = reinterpret_cast<uint16_t*>(cb->data) + (x+(cb->stride*y)); |
| 1436 | uint32_t packed = c->packed; |
| 1437 | android_memset16(dst, packed, ct*2); |
| 1438 | } |
| 1439 | |
| 1440 | void scanline_memset32(context_t* c) |
| 1441 | { |
| 1442 | int32_t x = c->iterators.xl; |
| 1443 | size_t ct = c->iterators.xr - x; |
| 1444 | int32_t y = c->iterators.y; |
| 1445 | surface_t* cb = &(c->state.buffers.color); |
| 1446 | uint32_t* dst = reinterpret_cast<uint32_t*>(cb->data) + (x+(cb->stride*y)); |
| 1447 | uint32_t packed = GGL_HOST_TO_RGBA(c->packed); |
| 1448 | android_memset32(dst, packed, ct*4); |
| 1449 | } |
| 1450 | |
| 1451 | void scanline_clear(context_t* c) |
| 1452 | { |
| 1453 | int32_t x = c->iterators.xl; |
| 1454 | size_t ct = c->iterators.xr - x; |
| 1455 | int32_t y = c->iterators.y; |
| 1456 | surface_t* cb = &(c->state.buffers.color); |
| 1457 | const GGLFormat* fp = &(c->formats[cb->format]); |
| 1458 | uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) + |
| 1459 | (x + (cb->stride * y)) * fp->size; |
| 1460 | const size_t size = ct * fp->size; |
| 1461 | memset(dst, 0, size); |
| 1462 | } |
| 1463 | |
| 1464 | void scanline_set(context_t* c) |
| 1465 | { |
| 1466 | int32_t x = c->iterators.xl; |
| 1467 | size_t ct = c->iterators.xr - x; |
| 1468 | int32_t y = c->iterators.y; |
| 1469 | surface_t* cb = &(c->state.buffers.color); |
| 1470 | const GGLFormat* fp = &(c->formats[cb->format]); |
| 1471 | uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) + |
| 1472 | (x + (cb->stride * y)) * fp->size; |
| 1473 | const size_t size = ct * fp->size; |
| 1474 | memset(dst, 0xFF, size); |
| 1475 | } |
| 1476 | |
| 1477 | void scanline_noop(context_t* c) |
| 1478 | { |
| 1479 | } |
| 1480 | |
| 1481 | void rect_generic(context_t* c, size_t yc) |
| 1482 | { |
| 1483 | do { |
| 1484 | c->scanline(c); |
| 1485 | c->step_y(c); |
| 1486 | } while (--yc); |
| 1487 | } |
| 1488 | |
| 1489 | void rect_memcpy(context_t* c, size_t yc) |
| 1490 | { |
| 1491 | int32_t x = c->iterators.xl; |
| 1492 | size_t ct = c->iterators.xr - x; |
| 1493 | int32_t y = c->iterators.y; |
| 1494 | surface_t* cb = &(c->state.buffers.color); |
| 1495 | const GGLFormat* fp = &(c->formats[cb->format]); |
| 1496 | uint8_t* dst = reinterpret_cast<uint8_t*>(cb->data) + |
| 1497 | (x + (cb->stride * y)) * fp->size; |
| 1498 | |
| 1499 | surface_t* tex = &(c->state.texture[0].surface); |
| 1500 | const int32_t u = (c->state.texture[0].shade.is0>>16) + x; |
| 1501 | const int32_t v = (c->state.texture[0].shade.it0>>16) + y; |
| 1502 | uint8_t *src = reinterpret_cast<uint8_t*>(tex->data) + |
| 1503 | (u + (tex->stride * v)) * fp->size; |
| 1504 | |
| 1505 | if (cb->stride == tex->stride && ct == size_t(cb->stride)) { |
| 1506 | memcpy(dst, src, ct * fp->size * yc); |
| 1507 | } else { |
| 1508 | const size_t size = ct * fp->size; |
| 1509 | const size_t dbpr = cb->stride * fp->size; |
| 1510 | const size_t sbpr = tex->stride * fp->size; |
| 1511 | do { |
| 1512 | memcpy(dst, src, size); |
| 1513 | dst += dbpr; |
| 1514 | src += sbpr; |
| 1515 | } while (--yc); |
| 1516 | } |
| 1517 | } |
| 1518 | // ---------------------------------------------------------------------------- |
| 1519 | }; // namespace android |
| 1520 | |
| 1521 | using namespace android; |
| 1522 | extern "C" void ggl_test_codegen(uint32_t n, uint32_t p, uint32_t t0, uint32_t t1) |
| 1523 | { |
| 1524 | #if ANDROID_ARM_CODEGEN |
| 1525 | GGLContext* c; |
| 1526 | gglInit(&c); |
| 1527 | needs_t needs; |
| 1528 | needs.n = n; |
| 1529 | needs.p = p; |
| 1530 | needs.t[0] = t0; |
| 1531 | needs.t[1] = t1; |
| 1532 | sp<ScanlineAssembly> a(new ScanlineAssembly(needs, ASSEMBLY_SCRATCH_SIZE)); |
| 1533 | GGLAssembler assembler( new ARMAssembler(a) ); |
| 1534 | int err = assembler.scanline(needs, (context_t*)c); |
| 1535 | if (err != 0) { |
| 1536 | printf("error %08x (%s)\n", err, strerror(-err)); |
| 1537 | } |
| 1538 | gglUninit(c); |
| 1539 | #else |
| 1540 | printf("This test runs only on ARM\n"); |
| 1541 | #endif |
| 1542 | } |
| 1543 | |