intel_pixel_bitmap.c revision d85a6f70eba7d59bdee34d33e8b3caaeac328ecb
1/************************************************************************** 2 * 3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portionsalloc 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28#include "main/glheader.h" 29#include "main/enums.h" 30#include "main/image.h" 31#include "main/colormac.h" 32#include "main/mtypes.h" 33#include "main/macros.h" 34#include "main/bufferobj.h" 35#include "main/pixelstore.h" 36#include "main/polygon.h" 37#include "main/state.h" 38#include "main/teximage.h" 39#include "main/texenv.h" 40#include "main/texobj.h" 41#include "main/texstate.h" 42#include "main/texparam.h" 43#include "main/varray.h" 44#include "main/attrib.h" 45#include "main/enable.h" 46#include "main/viewport.h" 47#include "shader/arbprogram.h" 48#include "glapi/dispatch.h" 49#include "swrast/swrast.h" 50 51#include "intel_screen.h" 52#include "intel_context.h" 53#include "intel_batchbuffer.h" 54#include "intel_blit.h" 55#include "intel_regions.h" 56#include "intel_buffer_objects.h" 57#include "intel_buffers.h" 58#include "intel_pixel.h" 59#include "intel_reg.h" 60 61 62#define FILE_DEBUG_FLAG DEBUG_PIXEL 63 64 65/* Unlike the other intel_pixel_* functions, the expectation here is 66 * that the incoming data is not in a PBO. With the XY_TEXT blit 67 * method, there's no benefit haveing it in a PBO, but we could 68 * implement a path based on XY_MONO_SRC_COPY_BLIT which might benefit 69 * PBO bitmaps. I think they are probably pretty rare though - I 70 * wonder if Xgl uses them? 71 */ 72static const GLubyte *map_pbo( GLcontext *ctx, 73 GLsizei width, GLsizei height, 74 const struct gl_pixelstore_attrib *unpack, 75 const GLubyte *bitmap ) 76{ 77 GLubyte *buf; 78 79 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, 80 GL_COLOR_INDEX, GL_BITMAP, 81 (GLvoid *) bitmap)) { 82 _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)"); 83 return NULL; 84 } 85 86 buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, 87 GL_READ_ONLY_ARB, 88 unpack->BufferObj); 89 if (!buf) { 90 _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)"); 91 return NULL; 92 } 93 94 return ADD_POINTERS(buf, bitmap); 95} 96 97static GLboolean test_bit( const GLubyte *src, GLuint bit ) 98{ 99 return (src[bit/8] & (1<<(bit % 8))) ? 1 : 0; 100} 101 102static void set_bit( GLubyte *dest, GLuint bit ) 103{ 104 dest[bit/8] |= 1 << (bit % 8); 105} 106 107/* Extract a rectangle's worth of data from the bitmap. Called 108 * per-cliprect. 109 */ 110static GLuint get_bitmap_rect(GLsizei width, GLsizei height, 111 const struct gl_pixelstore_attrib *unpack, 112 const GLubyte *bitmap, 113 GLuint x, GLuint y, 114 GLuint w, GLuint h, 115 GLubyte *dest, 116 GLuint row_align, 117 GLboolean invert) 118{ 119 GLuint src_offset = (x + unpack->SkipPixels) & 0x7; 120 GLuint mask = unpack->LsbFirst ? 0 : 7; 121 GLuint bit = 0; 122 GLint row, col; 123 GLint first, last; 124 GLint incr; 125 GLuint count = 0; 126 127 if (INTEL_DEBUG & DEBUG_PIXEL) 128 _mesa_printf("%s %d,%d %dx%d bitmap %dx%d skip %d src_offset %d mask %d\n", 129 __FUNCTION__, x,y,w,h,width,height,unpack->SkipPixels, src_offset, mask); 130 131 if (invert) { 132 first = h-1; 133 last = 0; 134 incr = -1; 135 } 136 else { 137 first = 0; 138 last = h-1; 139 incr = 1; 140 } 141 142 /* Require that dest be pre-zero'd. 143 */ 144 for (row = first; row != (last+incr); row += incr) { 145 const GLubyte *rowsrc = _mesa_image_address2d(unpack, bitmap, 146 width, height, 147 GL_COLOR_INDEX, GL_BITMAP, 148 y + row, x); 149 150 for (col = 0; col < w; col++, bit++) { 151 if (test_bit(rowsrc, (col + src_offset) ^ mask)) { 152 set_bit(dest, bit ^ 7); 153 count++; 154 } 155 } 156 157 if (row_align) 158 bit = ALIGN(bit, row_align); 159 } 160 161 return count; 162} 163 164/** 165 * Returns the low Y value of the vertical range given, flipped according to 166 * whether the framebuffer is or not. 167 */ 168static inline int 169y_flip(struct gl_framebuffer *fb, int y, int height) 170{ 171 if (fb->Name != 0) 172 return y; 173 else 174 return fb->Height - y - height; 175} 176 177/* 178 * Render a bitmap. 179 */ 180static GLboolean 181do_blit_bitmap( GLcontext *ctx, 182 GLint dstx, GLint dsty, 183 GLsizei width, GLsizei height, 184 const struct gl_pixelstore_attrib *unpack, 185 const GLubyte *bitmap ) 186{ 187 struct intel_context *intel = intel_context(ctx); 188 struct intel_region *dst = intel_drawbuf_region(intel); 189 struct gl_framebuffer *fb = ctx->DrawBuffer; 190 GLfloat tmpColor[4]; 191 GLubyte ubcolor[4]; 192 GLuint color; 193 unsigned int num_cliprects; 194 drm_clip_rect_t *cliprects; 195 int x_off, y_off; 196 GLsizei bitmap_width = width; 197 GLsizei bitmap_height = height; 198 199 /* Update draw buffer bounds */ 200 _mesa_update_state(ctx); 201 202 if (ctx->Depth.Test) { 203 /* The blit path produces incorrect results when depth testing is on. 204 * It seems the blit Z coord is always 1.0 (the far plane) so fragments 205 * will likely be obscured by other, closer geometry. 206 */ 207 return GL_FALSE; 208 } 209 210 if (!dst) 211 return GL_FALSE; 212 213 if (_mesa_is_bufferobj(unpack->BufferObj)) { 214 bitmap = map_pbo(ctx, width, height, unpack, bitmap); 215 if (bitmap == NULL) 216 return GL_TRUE; /* even though this is an error, we're done */ 217 } 218 219 COPY_4V(tmpColor, ctx->Current.RasterColor); 220 221 if (NEED_SECONDARY_COLOR(ctx)) { 222 ADD_3V(tmpColor, tmpColor, ctx->Current.RasterSecondaryColor); 223 } 224 225 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[0], tmpColor[0]); 226 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[1], tmpColor[1]); 227 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[2], tmpColor[2]); 228 UNCLAMPED_FLOAT_TO_UBYTE(ubcolor[3], tmpColor[3]); 229 230 if (dst->cpp == 2) 231 color = PACK_COLOR_565(ubcolor[0], ubcolor[1], ubcolor[2]); 232 else 233 color = PACK_COLOR_8888(ubcolor[3], ubcolor[0], ubcolor[1], ubcolor[2]); 234 235 if (!intel_check_blit_fragment_ops(ctx, tmpColor[3] == 1.0F)) 236 return GL_FALSE; 237 238 LOCK_HARDWARE(intel); 239 240 intel_get_cliprects(intel, &cliprects, &num_cliprects, &x_off, &y_off); 241 if (num_cliprects != 0) { 242 GLuint i; 243 GLint orig_dstx = dstx; 244 GLint orig_dsty = dsty; 245 246 /* Clip to buffer bounds and scissor. */ 247 if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin, 248 fb->_Xmax, fb->_Ymax, 249 &dstx, &dsty, &width, &height)) 250 goto out; 251 252 dstx = x_off + dstx; 253 dsty = y_off + y_flip(fb, dsty, height); 254 255 for (i = 0; i < num_cliprects; i++) { 256 int box_x, box_y, box_w, box_h; 257 GLint px, py; 258 GLuint stipple[32]; 259 260 box_x = dstx; 261 box_y = dsty; 262 box_w = width; 263 box_h = height; 264 265 /* Clip to drawable cliprect */ 266 if (!_mesa_clip_to_region(cliprects[i].x1, 267 cliprects[i].y1, 268 cliprects[i].x2, 269 cliprects[i].y2, 270 &box_x, &box_y, &box_w, &box_h)) 271 continue; 272 273#define DY 32 274#define DX 32 275 276 /* Then, finally, chop it all into chunks that can be 277 * digested by hardware: 278 */ 279 for (py = 0; py < box_h; py += DY) { 280 for (px = 0; px < box_w; px += DX) { 281 int h = MIN2(DY, box_h - py); 282 int w = MIN2(DX, box_w - px); 283 GLuint sz = ALIGN(ALIGN(w,8) * h, 64)/8; 284 GLenum logic_op = ctx->Color.ColorLogicOpEnabled ? 285 ctx->Color.LogicOp : GL_COPY; 286 287 assert(sz <= sizeof(stipple)); 288 memset(stipple, 0, sz); 289 290 /* May need to adjust this when padding has been introduced in 291 * sz above: 292 * 293 * Have to translate destination coordinates back into source 294 * coordinates. 295 */ 296 if (get_bitmap_rect(bitmap_width, bitmap_height, unpack, 297 bitmap, 298 -orig_dstx + (box_x + px - x_off), 299 -orig_dsty + y_flip(fb, 300 box_y + py - y_off, h), 301 w, h, 302 (GLubyte *)stipple, 303 8, 304 fb->Name == 0 ? GL_TRUE : GL_FALSE) == 0) 305 continue; 306 307 if (!intelEmitImmediateColorExpandBlit(intel, 308 dst->cpp, 309 (GLubyte *)stipple, 310 sz, 311 color, 312 dst->pitch, 313 dst->buffer, 314 0, 315 dst->tiling, 316 box_x + px, 317 box_y + py, 318 w, h, 319 logic_op)) { 320 return GL_FALSE; 321 } 322 } 323 } 324 } 325 } 326out: 327 UNLOCK_HARDWARE(intel); 328 329 if (INTEL_DEBUG & DEBUG_SYNC) 330 intel_batchbuffer_flush(intel->batch); 331 332 if (_mesa_is_bufferobj(unpack->BufferObj)) { 333 /* done with PBO so unmap it now */ 334 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, 335 unpack->BufferObj); 336 } 337 338 intel_check_front_buffer_rendering(intel); 339 340 return GL_TRUE; 341} 342 343static GLboolean 344intel_texture_bitmap(GLcontext * ctx, 345 GLint dst_x, GLint dst_y, 346 GLsizei width, GLsizei height, 347 const struct gl_pixelstore_attrib *unpack, 348 const GLubyte *bitmap) 349{ 350 struct intel_context *intel = intel_context(ctx); 351 static const char *fp = 352 "!!ARBfp1.0\n" 353 "TEMP val;\n" 354 "PARAM color=program.local[0];\n" 355 "TEX val, fragment.texcoord[0], texture[0], 2D;\n" 356 "ADD val, val.wwww, {-.5, -.5, -.5, -.5};\n" 357 "KIL val;\n" 358 "MOV result.color, color;\n" 359 "END\n"; 360 GLuint texname; 361 GLfloat vertices[4][4]; 362 GLint old_active_texture; 363 GLubyte *a8_bitmap; 364 GLfloat dst_z; 365 366 /* We need a fragment program for the KIL effect */ 367 if (!ctx->Extensions.ARB_fragment_program || 368 !ctx->Extensions.ARB_vertex_program) { 369 if (INTEL_DEBUG & DEBUG_FALLBACKS) 370 fprintf(stderr, 371 "glBitmap fallback: No fragment/vertex program support\n"); 372 return GL_FALSE; 373 } 374 375 /* We're going to mess with texturing with no regard to existing texture 376 * state, so if there is some set up we have to bail. 377 */ 378 if (ctx->Texture._EnabledUnits != 0) { 379 if (INTEL_DEBUG & DEBUG_FALLBACKS) 380 fprintf(stderr, "glBitmap fallback: texturing enabled\n"); 381 return GL_FALSE; 382 } 383 384 /* Can't do textured DrawPixels with a fragment program, unless we were 385 * to generate a new program that sampled our texture and put the results 386 * in the fragment color before the user's program started. 387 */ 388 if (ctx->FragmentProgram.Enabled) { 389 if (INTEL_DEBUG & DEBUG_FALLBACKS) 390 fprintf(stderr, "glBitmap fallback: fragment program enabled\n"); 391 return GL_FALSE; 392 } 393 394 if (ctx->VertexProgram.Enabled) { 395 if (INTEL_DEBUG & DEBUG_FALLBACKS) 396 fprintf(stderr, "glBitmap fallback: vertex program enabled\n"); 397 return GL_FALSE; 398 } 399 400 if (!ctx->Extensions.ARB_texture_non_power_of_two && 401 (!is_power_of_two(width) || !is_power_of_two(height))) { 402 if (INTEL_DEBUG & DEBUG_FALLBACKS) 403 fprintf(stderr, 404 "glBitmap() fallback: NPOT texture\n"); 405 return GL_FALSE; 406 } 407 408 if (ctx->Fog.Enabled) { 409 if (INTEL_DEBUG & DEBUG_FALLBACKS) 410 fprintf(stderr, "glBitmap() fallback: fog\n"); 411 return GL_FALSE; 412 } 413 414 /* Check that we can load in a texture this big. */ 415 if (width > (1 << (ctx->Const.MaxTextureLevels - 1)) || 416 height > (1 << (ctx->Const.MaxTextureLevels - 1))) { 417 if (INTEL_DEBUG & DEBUG_FALLBACKS) 418 fprintf(stderr, "glBitmap fallback: bitmap too large (%dx%d)\n", 419 width, height); 420 return GL_FALSE; 421 } 422 423 if (_mesa_is_bufferobj(unpack->BufferObj)) { 424 bitmap = map_pbo(ctx, width, height, unpack, bitmap); 425 if (bitmap == NULL) 426 return GL_TRUE; /* even though this is an error, we're done */ 427 } 428 429 /* Convert the A1 bitmap to an A8 format suitable for glTexImage */ 430 a8_bitmap = _mesa_calloc(width * height); 431 _mesa_expand_bitmap(width, height, unpack, bitmap, a8_bitmap, width, 0xff); 432 433 if (_mesa_is_bufferobj(unpack->BufferObj)) { 434 /* done with PBO so unmap it now */ 435 ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, 436 unpack->BufferObj); 437 } 438 439 /* Save GL state before we start setting up our drawing */ 440 _mesa_PushAttrib(GL_ENABLE_BIT | GL_CURRENT_BIT | GL_POLYGON_BIT | 441 GL_TEXTURE_BIT | GL_VIEWPORT_BIT); 442 _mesa_PushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT | 443 GL_CLIENT_PIXEL_STORE_BIT); 444 old_active_texture = ctx->Texture.CurrentUnit; 445 446 _mesa_Disable(GL_POLYGON_STIPPLE); 447 _mesa_PolygonMode(GL_FRONT_AND_BACK, GL_FILL); 448 449 /* Upload our bitmap data to an alpha texture */ 450 _mesa_ActiveTextureARB(GL_TEXTURE0_ARB); 451 _mesa_Enable(GL_TEXTURE_2D); 452 _mesa_GenTextures(1, &texname); 453 _mesa_BindTexture(GL_TEXTURE_2D, texname); 454 _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 455 _mesa_TexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 456 457 _mesa_PixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE); 458 _mesa_PixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE); 459 _mesa_PixelStorei(GL_UNPACK_ROW_LENGTH, 0); 460 _mesa_PixelStorei(GL_UNPACK_SKIP_PIXELS, 0); 461 _mesa_PixelStorei(GL_UNPACK_SKIP_ROWS, 0); 462 _mesa_PixelStorei(GL_UNPACK_ALIGNMENT, 1); 463 _mesa_TexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, 464 GL_ALPHA, GL_UNSIGNED_BYTE, a8_bitmap); 465 _mesa_free(a8_bitmap); 466 467 meta_set_fragment_program(&intel->meta, &intel->meta.bitmap_fp, fp); 468 _mesa_ProgramLocalParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 0, 469 ctx->Current.RasterColor); 470 meta_set_passthrough_vertex_program(&intel->meta); 471 meta_set_passthrough_transform(&intel->meta); 472 473 /* convert rasterpos Z from [0,1] to NDC coord in [-1,1] */ 474 dst_z = -1.0 + 2.0 * ctx->Current.RasterPos[2]; 475 476 /* RasterPos[2] already takes into account the DepthRange mapping. */ 477 _mesa_DepthRange(0.0, 1.0); 478 479 vertices[0][0] = dst_x; 480 vertices[0][1] = dst_y; 481 vertices[0][2] = dst_z; 482 vertices[0][3] = 1.0; 483 vertices[1][0] = dst_x + width; 484 vertices[1][1] = dst_y; 485 vertices[1][2] = dst_z; 486 vertices[1][3] = 1.0; 487 vertices[2][0] = dst_x + width; 488 vertices[2][1] = dst_y + height; 489 vertices[2][2] = dst_z; 490 vertices[2][3] = 1.0; 491 vertices[3][0] = dst_x; 492 vertices[3][1] = dst_y + height; 493 vertices[3][2] = dst_z; 494 vertices[3][3] = 1.0; 495 496 _mesa_VertexPointer(4, GL_FLOAT, 4 * sizeof(GLfloat), &vertices); 497 _mesa_Enable(GL_VERTEX_ARRAY); 498 meta_set_default_texrect(&intel->meta); 499 _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4); 500 501 meta_restore_texcoords(&intel->meta); 502 meta_restore_transform(&intel->meta); 503 meta_restore_fragment_program(&intel->meta); 504 meta_restore_vertex_program(&intel->meta); 505 506 _mesa_ActiveTextureARB(GL_TEXTURE0_ARB + old_active_texture); 507 _mesa_PopClientAttrib(); 508 _mesa_PopAttrib(); 509 510 _mesa_DeleteTextures(1, &texname); 511 512 return GL_TRUE; 513} 514 515/* There are a large number of possible ways to implement bitmap on 516 * this hardware, most of them have some sort of drawback. Here are a 517 * few that spring to mind: 518 * 519 * Blit: 520 * - XY_MONO_SRC_BLT_CMD 521 * - use XY_SETUP_CLIP_BLT for cliprect clipping. 522 * - XY_TEXT_BLT 523 * - XY_TEXT_IMMEDIATE_BLT 524 * - blit per cliprect, subject to maximum immediate data size. 525 * - XY_COLOR_BLT 526 * - per pixel or run of pixels 527 * - XY_PIXEL_BLT 528 * - good for sparse bitmaps 529 * 530 * 3D engine: 531 * - Point per pixel 532 * - Translate bitmap to an alpha texture and render as a quad 533 * - Chop bitmap up into 32x32 squares and render w/polygon stipple. 534 */ 535void 536intelBitmap(GLcontext * ctx, 537 GLint x, GLint y, 538 GLsizei width, GLsizei height, 539 const struct gl_pixelstore_attrib *unpack, 540 const GLubyte * pixels) 541{ 542 if (do_blit_bitmap(ctx, x, y, width, height, 543 unpack, pixels)) 544 return; 545 546 if (intel_texture_bitmap(ctx, x, y, width, height, 547 unpack, pixels)) 548 return; 549 550 if (INTEL_DEBUG & DEBUG_PIXEL) 551 _mesa_printf("%s: fallback to swrast\n", __FUNCTION__); 552 553 _swrast_Bitmap(ctx, x, y, width, height, unpack, pixels); 554} 555