intel_pixel_draw.c revision f75843a517bd188639e6866db2a7b04de3524e16
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 "glheader.h" 29#include "enums.h" 30#include "image.h" 31#include "mtypes.h" 32#include "macros.h" 33#include "bufferobj.h" 34#include "swrast/swrast.h" 35 36#include "intel_screen.h" 37#include "intel_context.h" 38#include "intel_ioctl.h" 39#include "intel_batchbuffer.h" 40#include "intel_blit.h" 41#include "intel_buffers.h" 42#include "intel_regions.h" 43#include "intel_pixel.h" 44#include "intel_buffer_objects.h" 45#include "intel_tris.h" 46 47 48 49static GLboolean 50do_texture_drawpixels(GLcontext * ctx, 51 GLint x, GLint y, 52 GLsizei width, GLsizei height, 53 GLenum format, GLenum type, 54 const struct gl_pixelstore_attrib *unpack, 55 const GLvoid * pixels) 56{ 57 struct intel_context *intel = intel_context(ctx); 58 struct intel_region *dst = intel_drawbuf_region(intel); 59 struct intel_buffer_object *src = intel_buffer_object(unpack->BufferObj); 60 GLuint rowLength = unpack->RowLength ? unpack->RowLength : width; 61 GLuint src_offset; 62 63 if (INTEL_DEBUG & DEBUG_PIXEL) 64 fprintf(stderr, "%s\n", __FUNCTION__); 65 66 intelFlush(&intel->ctx); 67 68 if (!dst) 69 return GL_FALSE; 70 71 intel->vtbl.render_start(intel); 72 intel->vtbl.emit_state(intel); 73 74 if (src) { 75 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, 76 format, type, pixels)) { 77 _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels"); 78 return GL_TRUE; 79 } 80 } 81 else { 82 /* PBO only for now: 83 */ 84 if (INTEL_DEBUG & DEBUG_PIXEL) 85 _mesa_printf("%s - not PBO\n", __FUNCTION__); 86 return GL_FALSE; 87 } 88 89 /* There are a couple of things we can't do yet, one of which is 90 * set the correct state for pixel operations when GL texturing is 91 * enabled. That's a pretty rare state and probably not worth the 92 * effort. A completely device-independent version of this may do 93 * more. 94 * 95 * Similarly, we make no attempt to merge metaops processing with 96 * an enabled fragment program, though it would certainly be 97 * possible. 98 */ 99 if (!intel_check_meta_tex_fragment_ops(ctx)) { 100 if (INTEL_DEBUG & DEBUG_PIXEL) 101 _mesa_printf("%s - bad GL fragment state for metaops texture\n", 102 __FUNCTION__); 103 return GL_FALSE; 104 } 105 106 intel->vtbl.install_meta_state(intel); 107 108 109 /* Is this true? Also will need to turn depth testing on according 110 * to state: 111 */ 112 intel->vtbl.meta_no_stencil_write(intel); 113 intel->vtbl.meta_no_depth_write(intel); 114 115 /* Set the 3d engine to draw into the destination region: 116 */ 117 intel->vtbl.meta_draw_region(intel, dst, intel->depth_region); 118 119 intel->vtbl.meta_import_pixel_state(intel); 120 121 src_offset = (GLuint) _mesa_image_address(2, unpack, pixels, width, height, 122 format, type, 0, 0, 0); 123 124 125 /* Setup the pbo up as a rectangular texture, if possible. 126 * 127 * TODO: This is almost always possible if the i915 fragment 128 * program is adjusted to correctly swizzle the sampled colors. 129 * The major exception is any 24bit texture, like RGB888, for which 130 * there is no hardware support. 131 */ 132 if (!intel->vtbl.meta_tex_rect_source(intel, src->buffer, src_offset, 133 rowLength, height, format, type)) { 134 intel->vtbl.leave_meta_state(intel); 135 return GL_FALSE; 136 } 137 138 intel->vtbl.meta_texture_blend_replace(intel); 139 140 141 LOCK_HARDWARE(intel); 142 143 if (intel->driDrawable->numClipRects) { 144 __DRIdrawablePrivate *dPriv = intel->driDrawable; 145 GLint srcx, srcy; 146 GLint dstx, dsty; 147 148 dstx = x; 149 dsty = dPriv->h - (y + height); 150 151 srcx = 0; /* skiprows/pixels already done */ 152 srcy = 0; 153 154 if (0) { 155 const GLint orig_x = dstx; 156 const GLint orig_y = dsty; 157 158 if (!_mesa_clip_to_region(0, 0, dst->pitch, dst->height, 159 &dstx, &dsty, &width, &height)) 160 goto out; 161 162 srcx += dstx - orig_x; 163 srcy += dsty - orig_y; 164 } 165 166 167 if (INTEL_DEBUG & DEBUG_PIXEL) 168 _mesa_printf("draw %d,%d %dx%d\n", dstx, dsty, width, height); 169 170 /* Must use the regular cliprect mechanism in order to get the 171 * drawing origin set correctly. Otherwise scissor state is in 172 * incorrect coordinate space. Does this even need to hold the 173 * lock??? 174 */ 175 intel->vtbl.meta_draw_quad(intel, 176 dstx, dstx + width * ctx->Pixel.ZoomX, 177 dPriv->h - (y + height * ctx->Pixel.ZoomY), 178 dPriv->h - (y), 179 -ctx->Current.RasterPos[2] * .5, 180 0x00ff00ff, 181 srcx, srcx + width, srcy + height, srcy); 182 out: 183 intel->vtbl.leave_meta_state(intel); 184 intel_batchbuffer_emit_mi_flush(intel->batch); 185 } 186 UNLOCK_HARDWARE(intel); 187 return GL_TRUE; 188} 189 190 191 192 193 194/* Pros: 195 * - no waiting for idle before updating framebuffer. 196 * 197 * Cons: 198 * - if upload is by memcpy, this may actually be slower than fallback path. 199 * - uploads the whole image even if destination is clipped 200 * 201 * Need to benchmark. 202 * 203 * Given the questions about performance, implement for pbo's only. 204 * This path is definitely a win if the pbo is already in agp. If it 205 * turns out otherwise, we can add the code necessary to upload client 206 * data to agp space before performing the blit. (Though it may turn 207 * out to be better/simpler just to use the texture engine). 208 */ 209static GLboolean 210do_blit_drawpixels(GLcontext * ctx, 211 GLint x, GLint y, 212 GLsizei width, GLsizei height, 213 GLenum format, GLenum type, 214 const struct gl_pixelstore_attrib *unpack, 215 const GLvoid * pixels) 216{ 217 struct intel_context *intel = intel_context(ctx); 218 struct intel_region *dest = intel_drawbuf_region(intel); 219 struct intel_buffer_object *src = intel_buffer_object(unpack->BufferObj); 220 GLuint src_offset; 221 GLuint rowLength; 222 223 if (INTEL_DEBUG & DEBUG_PIXEL) 224 _mesa_printf("%s\n", __FUNCTION__); 225 226 227 if (!dest) { 228 if (INTEL_DEBUG & DEBUG_PIXEL) 229 _mesa_printf("%s - no dest\n", __FUNCTION__); 230 return GL_FALSE; 231 } 232 233 if (src) { 234 /* This validation should be done by core mesa: 235 */ 236 if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, 237 format, type, pixels)) { 238 _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels"); 239 return GL_TRUE; 240 } 241 } 242 else { 243 /* PBO only for now: 244 */ 245 if (INTEL_DEBUG & DEBUG_PIXEL) 246 _mesa_printf("%s - not PBO\n", __FUNCTION__); 247 return GL_FALSE; 248 } 249 250 if (!intel_check_blit_format(dest, format, type)) { 251 if (INTEL_DEBUG & DEBUG_PIXEL) 252 _mesa_printf("%s - bad format for blit\n", __FUNCTION__); 253 return GL_FALSE; 254 } 255 256 if (!intel_check_blit_fragment_ops(ctx, GL_FALSE)) { 257 if (INTEL_DEBUG & DEBUG_PIXEL) 258 _mesa_printf("%s - bad GL fragment state for blitter\n", 259 __FUNCTION__); 260 return GL_FALSE; 261 } 262 263 if (ctx->Pixel.ZoomX != 1.0F) { 264 if (INTEL_DEBUG & DEBUG_PIXEL) 265 _mesa_printf("%s - bad PixelZoomX for blit\n", __FUNCTION__); 266 return GL_FALSE; 267 } 268 269 270 if (unpack->RowLength > 0) 271 rowLength = unpack->RowLength; 272 else 273 rowLength = width; 274 275 if (ctx->Pixel.ZoomY == -1.0F) { 276 if (INTEL_DEBUG & DEBUG_PIXEL) 277 _mesa_printf("%s - bad PixelZoomY for blit\n", __FUNCTION__); 278 return GL_FALSE; /* later */ 279 y -= height; 280 } 281 else if (ctx->Pixel.ZoomY == 1.0F) { 282 rowLength = -rowLength; 283 } 284 else { 285 if (INTEL_DEBUG & DEBUG_PIXEL) 286 _mesa_printf("%s - bad PixelZoomY for blit\n", __FUNCTION__); 287 return GL_FALSE; 288 } 289 290 src_offset = (GLuint) _mesa_image_address(2, unpack, pixels, width, height, 291 format, type, 0, 0, 0); 292 293 intelFlush(&intel->ctx); 294 LOCK_HARDWARE(intel); 295 296 if (intel->driDrawable->numClipRects) { 297 __DRIdrawablePrivate *dPriv = intel->driDrawable; 298 int nbox = dPriv->numClipRects; 299 drm_clip_rect_t *box = dPriv->pClipRects; 300 drm_clip_rect_t rect; 301 drm_clip_rect_t dest_rect; 302 dri_bo *src_buffer = intel_bufferobj_buffer(intel, src, INTEL_READ); 303 int i; 304 305 dest_rect.x1 = dPriv->x + x; 306 dest_rect.y1 = dPriv->y + dPriv->h - (y + height); 307 dest_rect.x2 = dest_rect.x1 + width; 308 dest_rect.y2 = dest_rect.y1 + height; 309 310 for (i = 0; i < nbox; i++) { 311 if (!intel_intersect_cliprects(&rect, &dest_rect, &box[i])) 312 continue; 313 314 intelEmitCopyBlit(intel, 315 dest->cpp, 316 rowLength, src_buffer, src_offset, GL_FALSE, 317 dest->pitch, dest->buffer, 0, dest->tiling, 318 rect.x1 - dest_rect.x1, 319 rect.y2 - dest_rect.y2, 320 rect.x1, 321 rect.y1, rect.x2 - rect.x1, rect.y2 - rect.y1, 322 ctx->Color.ColorLogicOpEnabled ? 323 ctx->Color.LogicOp : GL_COPY); 324 } 325 } 326 UNLOCK_HARDWARE(intel); 327 328 if (INTEL_DEBUG & DEBUG_PIXEL) 329 _mesa_printf("%s - DONE\n", __FUNCTION__); 330 331 return GL_TRUE; 332} 333 334 335 336void 337intelDrawPixels(GLcontext * ctx, 338 GLint x, GLint y, 339 GLsizei width, GLsizei height, 340 GLenum format, 341 GLenum type, 342 const struct gl_pixelstore_attrib *unpack, 343 const GLvoid * pixels) 344{ 345 if (do_blit_drawpixels(ctx, x, y, width, height, format, type, 346 unpack, pixels)) 347 return; 348 349 if (do_texture_drawpixels(ctx, x, y, width, height, format, type, 350 unpack, pixels)) 351 return; 352 353 354 if (INTEL_DEBUG & DEBUG_PIXEL) 355 _mesa_printf("%s: fallback to swrast\n", __FUNCTION__); 356 357 if (ctx->FragmentProgram._Current == ctx->FragmentProgram._TexEnvProgram) { 358 /* 359 * We don't want the i915 texenv program to be applied to DrawPixels. 360 * This is really just a performance optimization (mesa will other- 361 * wise happily run the fragment program on each pixel in the image). 362 */ 363 struct gl_fragment_program *fpSave = ctx->FragmentProgram._Current; 364 /* can't just set current frag prog to 0 here as on buffer resize 365 we'll get new state checks which will segfault. Remains a hack. */ 366 ctx->FragmentProgram._Current = NULL; 367 ctx->FragmentProgram._UseTexEnvProgram = GL_FALSE; 368 ctx->FragmentProgram._Active = GL_FALSE; 369 _swrast_DrawPixels( ctx, x, y, width, height, format, type, 370 unpack, pixels ); 371 ctx->FragmentProgram._Current = fpSave; 372 ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE; 373 ctx->FragmentProgram._Active = GL_TRUE; 374 _swrast_InvalidateState(ctx, _NEW_PROGRAM); 375 } 376 else { 377 _swrast_DrawPixels( ctx, x, y, width, height, format, type, 378 unpack, pixels ); 379 } 380} 381