src/mesa/drivers/dri/r300/r300_blit.c

   1 /*
   2  * Copyright (C) 2009 Maciej Cencora <m.cencora@gmail.com>
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a 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, sublicense, 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
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27
  28 #include "radeon_common.h"
  29 #include "r300_context.h"
  30
  31 #include "r300_blit.h"
  32 #include "r300_cmdbuf.h"
  33 #include "r300_emit.h"
  34 #include "r300_tex.h"
  35 #include "compiler/radeon_compiler.h"
  36 #include "compiler/radeon_opcodes.h"
  37
  38 static void vp_ins_outs(struct r300_vertex_program_compiler *c)
  39 {
  40     c->code->inputs[VERT_ATTRIB_POS] = 0;
  41     c->code->inputs[VERT_ATTRIB_TEX0] = 1;
  42     c->code->outputs[VERT_RESULT_HPOS] = 0;
  43     c->code->outputs[VERT_RESULT_TEX0] = 1;
  44 }
  45
  46 static void fp_allocate_hw_inputs(
  47     struct r300_fragment_program_compiler * c,
  48     void (*allocate)(void * data, unsigned input, unsigned hwreg),
  49     void * mydata)
  50 {
  51     allocate(mydata, FRAG_ATTRIB_TEX0, 0);
  52 }
  53
  54 static void create_vertex_program(struct r300_context *r300)
  55 {
  56     struct r300_vertex_program_compiler compiler;
  57     struct rc_instruction *inst;
  58
  59     memset(&compiler, 0, sizeof(compiler));
  60     rc_init(&compiler.Base);
  61
  62     inst = rc_insert_new_instruction(&compiler.Base, compiler.Base.Program.Instructions.Prev);
  63     inst->U.I.Opcode = RC_OPCODE_MOV;
  64     inst->U.I.DstReg.File = RC_FILE_OUTPUT;
  65     inst->U.I.DstReg.Index = VERT_RESULT_HPOS;
  66     inst->U.I.DstReg.RelAddr = 0;
  67     inst->U.I.DstReg.WriteMask = RC_MASK_XYZW;
  68     inst->U.I.SrcReg[0].Abs = 0;
  69     inst->U.I.SrcReg[0].File = RC_FILE_INPUT;
  70     inst->U.I.SrcReg[0].Index = VERT_ATTRIB_POS;
  71     inst->U.I.SrcReg[0].Negate = 0;
  72     inst->U.I.SrcReg[0].RelAddr = 0;
  73     inst->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZW;
  74
  75     inst = rc_insert_new_instruction(&compiler.Base, compiler.Base.Program.Instructions.Prev);
  76     inst->U.I.Opcode = RC_OPCODE_MOV;
  77     inst->U.I.DstReg.File = RC_FILE_OUTPUT;
  78     inst->U.I.DstReg.Index = VERT_RESULT_TEX0;
  79     inst->U.I.DstReg.RelAddr = 0;
  80     inst->U.I.DstReg.WriteMask = RC_MASK_XYZW;
  81     inst->U.I.SrcReg[0].Abs = 0;
  82     inst->U.I.SrcReg[0].File = RC_FILE_INPUT;
  83     inst->U.I.SrcReg[0].Index = VERT_ATTRIB_TEX0;
  84     inst->U.I.SrcReg[0].Negate = 0;
  85     inst->U.I.SrcReg[0].RelAddr = 0;
  86     inst->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZW;
  87
  88     compiler.Base.Program.InputsRead = (1 << VERT_ATTRIB_POS) | (1 << VERT_ATTRIB_TEX0);
  89     compiler.RequiredOutputs = compiler.Base.Program.OutputsWritten = (1 << VERT_RESULT_HPOS) | (1 << VERT_RESULT_TEX0);
  90     compiler.SetHwInputOutput = vp_ins_outs;
  91     compiler.code = &r300->blit.vp_code;
  92     compiler.Base.is_r500 = r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515;
  93     compiler.Base.disable_optimizations = 0;
  94     compiler.Base.has_half_swizzles = 0;
  95     compiler.Base.max_temp_regs = 32;
  96     compiler.Base.max_constants = 256;
  97     compiler.Base.max_alu_insts = compiler.Base.is_r500 ? 1024 : 256;
  98
  99     r3xx_compile_vertex_program(&compiler);
 100 }
 101
 102 static void create_fragment_program(struct r300_context *r300)
 103 {
 104     struct r300_fragment_program_compiler compiler;
 105     struct rc_instruction *inst;
 106
 107     memset(&compiler, 0, sizeof(struct r300_fragment_program_compiler));
 108     rc_init(&compiler.Base);
 109
 110     inst = rc_insert_new_instruction(&compiler.Base, compiler.Base.Program.Instructions.Prev);
 111     inst->U.I.Opcode = RC_OPCODE_TEX;
 112     inst->U.I.TexSrcTarget = RC_TEXTURE_2D;
 113     inst->U.I.TexSrcUnit = 0;
 114     inst->U.I.DstReg.File = RC_FILE_OUTPUT;
 115     inst->U.I.DstReg.Index = FRAG_RESULT_COLOR;
 116     inst->U.I.DstReg.WriteMask = RC_MASK_XYZW;
 117     inst->U.I.SrcReg[0].Abs = 0;
 118     inst->U.I.SrcReg[0].File = RC_FILE_INPUT;
 119     inst->U.I.SrcReg[0].Index = FRAG_ATTRIB_TEX0;
 120     inst->U.I.SrcReg[0].Negate = 0;
 121     inst->U.I.SrcReg[0].RelAddr = 0;
 122     inst->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZW;
 123
 124     compiler.Base.Program.InputsRead = (1 << FRAG_ATTRIB_TEX0);
 125     compiler.OutputColor[0] = FRAG_RESULT_COLOR;
 126     compiler.OutputDepth = FRAG_RESULT_DEPTH;
 127     compiler.enable_shadow_ambient = GL_TRUE;
 128     compiler.Base.is_r500 = (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515);
 129     compiler.Base.disable_optimizations = 0;
 130     compiler.Base.has_half_swizzles = 1;
 131     compiler.Base.max_temp_regs = (compiler.Base.is_r500) ? 128 : 32;
 132     compiler.Base.max_constants = compiler.Base.is_r500 ? 256 : 32;
 133     compiler.Base.max_alu_insts = compiler.Base.is_r500 ? 512 : 64;
 134     compiler.code = &r300->blit.fp_code;
 135     compiler.AllocateHwInputs = fp_allocate_hw_inputs;
 136
 137     r3xx_compile_fragment_program(&compiler);
 138 }
 139
 140 void r300_blit_init(struct r300_context *r300)
 141 {
 142     if (r300->options.hw_tcl_enabled)
 143         create_vertex_program(r300);
 144     create_fragment_program(r300);
 145 }
 146
 147 static void r300_emit_tx_setup(struct r300_context *r300,
 148                                gl_format mesa_format,
 149                                struct radeon_bo *bo,
 150                                intptr_t offset,
 151                                unsigned width,
 152                                unsigned height,
 153                                unsigned pitch)
 154 {
 155     int is_r500 = r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515;
 156     BATCH_LOCALS(&r300->radeon);
 157
 158     assert(is_r500 ? width  <= 4096 : width  <= 2048);
 159     assert(is_r500 ? height <= 4096 : height <= 2048);
 160     assert(r300TranslateTexFormat(mesa_format) >= 0);
 161     assert(offset % 32 == 0);
 162
 163     BEGIN_BATCH(17);
 164     OUT_BATCH_REGVAL(R300_TX_FILTER0_0,
 165                      (R300_TX_CLAMP_TO_EDGE  << R300_TX_WRAP_S_SHIFT) |
 166                      (R300_TX_CLAMP_TO_EDGE  << R300_TX_WRAP_T_SHIFT) |
 167                      (R300_TX_CLAMP_TO_EDGE  << R300_TX_WRAP_R_SHIFT) |
 168                      R300_TX_MIN_FILTER_MIP_NONE |
 169                      R300_TX_MIN_FILTER_NEAREST |
 170                      R300_TX_MAG_FILTER_NEAREST |
 171                      (0 << 28));
 172     OUT_BATCH_REGVAL(R300_TX_FILTER1_0, 0);
 173     OUT_BATCH_REGVAL(R300_TX_SIZE_0,
 174                      (((width  - 1) & 0x7ff) << R300_TX_WIDTHMASK_SHIFT) |
 175                      (((height - 1) & 0x7ff) << R300_TX_HEIGHTMASK_SHIFT) |
 176                      (0 << R300_TX_DEPTHMASK_SHIFT) |
 177                      (0 << R300_TX_MAX_MIP_LEVEL_SHIFT) |
 178                      R300_TX_SIZE_TXPITCH_EN);
 179
 180     OUT_BATCH_REGVAL(R300_TX_FORMAT_0, r300TranslateTexFormat(mesa_format));
 181     OUT_BATCH_REGVAL(R300_TX_FORMAT2_0,
 182                      (pitch - 1) |
 183                      (is_r500 && width  > 2048 ? R500_TXWIDTH_BIT11  : 0) |
 184                      (is_r500 && height > 2048 ? R500_TXHEIGHT_BIT11 : 0));
 185     OUT_BATCH_REGSEQ(R300_TX_OFFSET_0, 1);
 186     OUT_BATCH_RELOC(0, bo, offset, RADEON_GEM_DOMAIN_GTT|RADEON_GEM_DOMAIN_VRAM, 0, 0);
 187
 188     OUT_BATCH_REGSEQ(R300_TX_INVALTAGS, 2);
 189     OUT_BATCH(0);
 190     OUT_BATCH(1);
 191
 192     END_BATCH();
 193 }
 194
 195 #define EASY_US_FORMAT(FMT, C0, C1, C2, C3, SIGN) \
 196     (FMT  | R500_C0_SEL_##C0 | R500_C1_SEL_##C1 | \
 197     R500_C2_SEL_##C2 | R500_C3_SEL_##C3 | R500_OUT_SIGN(SIGN))
 198
 199 static uint32_t mesa_format_to_us_format(gl_format mesa_format)
 200 {
 201     switch(mesa_format)
 202     {
 203         case MESA_FORMAT_RGBA8888: // x
 204             return EASY_US_FORMAT(R500_OUT_FMT_C4_8, A, B, G, R, 0);
 205         case MESA_FORMAT_RGB565: // x
 206         case MESA_FORMAT_ARGB1555: // x
 207         case MESA_FORMAT_RGBA8888_REV: // x
 208             return EASY_US_FORMAT(R500_OUT_FMT_C4_8, R, G, B, A, 0);
 209         case MESA_FORMAT_ARGB8888: // x
 210             return EASY_US_FORMAT(R500_OUT_FMT_C4_8, B, G, R, A, 0);
 211         case MESA_FORMAT_ARGB8888_REV:
 212             return EASY_US_FORMAT(R500_OUT_FMT_C4_8, A, R, G, B, 0);
 213         case MESA_FORMAT_XRGB8888:
 214             return EASY_US_FORMAT(R500_OUT_FMT_C4_8, A, R, G, B, 0);
 215
 216         case MESA_FORMAT_RGB332:
 217             return EASY_US_FORMAT(R500_OUT_FMT_C_3_3_2, A, R, G, B, 0);
 218
 219         case MESA_FORMAT_RGBA_FLOAT32:
 220             return EASY_US_FORMAT(R500_OUT_FMT_C4_32_FP, R, G, B, A, 0);
 221         case MESA_FORMAT_RGBA_FLOAT16:
 222             return EASY_US_FORMAT(R500_OUT_FMT_C4_16_FP, R, G, B, A, 0);
 223         case MESA_FORMAT_ALPHA_FLOAT32:
 224             return EASY_US_FORMAT(R500_OUT_FMT_C_32_FP, A, A, A, A, 0);
 225         case MESA_FORMAT_ALPHA_FLOAT16:
 226             return EASY_US_FORMAT(R500_OUT_FMT_C_16_FP, A, A, A, A, 0);
 227
 228         case MESA_FORMAT_SIGNED_RGBA8888:
 229             return EASY_US_FORMAT(R500_OUT_FMT_C4_8, R, G, B, A, 0xf);
 230         case MESA_FORMAT_SIGNED_RGBA8888_REV:
 231             return EASY_US_FORMAT(R500_OUT_FMT_C4_8, A, B, G, R, 0xf);
 232         case MESA_FORMAT_SIGNED_RGBA_16:
 233             return EASY_US_FORMAT(R500_OUT_FMT_C4_16, R, G, B, A, 0xf);
 234
 235         default:
 236             fprintf(stderr, "Unsupported format %s for US output\n", _mesa_get_format_name(mesa_format));
 237             assert(0);
 238             return 0;
 239     }
 240 }
 241 #undef EASY_US_FORMAT
 242
 243 static void r500_emit_fp_setup(struct r300_context *r300,
 244                                struct r500_fragment_program_code *fp,
 245                                gl_format dst_format)
 246 {
 247     r500_emit_fp(r300, (uint32_t *)fp->inst, (fp->inst_end + 1) * 6, 0, 0, 0);
 248     BATCH_LOCALS(&r300->radeon);
 249
 250     BEGIN_BATCH(10);
 251     OUT_BATCH_REGSEQ(R500_US_CODE_ADDR, 3);
 252     OUT_BATCH(R500_US_CODE_START_ADDR(0) | R500_US_CODE_END_ADDR(fp->inst_end));
 253     OUT_BATCH(R500_US_CODE_RANGE_ADDR(0) | R500_US_CODE_RANGE_SIZE(fp->inst_end));
 254     OUT_BATCH(0);
 255     OUT_BATCH_REGVAL(R500_US_CONFIG, 0);
 256     OUT_BATCH_REGVAL(R500_US_OUT_FMT_0, mesa_format_to_us_format(dst_format));
 257     OUT_BATCH_REGVAL(R500_US_PIXSIZE, fp->max_temp_idx);
 258     END_BATCH();
 259 }
 260
 261 static void r500_emit_rs_setup(struct r300_context *r300)
 262 {
 263     BATCH_LOCALS(&r300->radeon);
 264
 265     BEGIN_BATCH(7);
 266     OUT_BATCH_REGSEQ(R300_RS_COUNT, 2);
 267     OUT_BATCH((4 << R300_IT_COUNT_SHIFT) | R300_HIRES_EN);
 268     OUT_BATCH(0);
 269     OUT_BATCH_REGVAL(R500_RS_INST_0,
 270                      (0 << R500_RS_INST_TEX_ID_SHIFT) |
 271                      (0 << R500_RS_INST_TEX_ADDR_SHIFT) |
 272                      R500_RS_INST_TEX_CN_WRITE |
 273                      R500_RS_INST_COL_CN_NO_WRITE);
 274     OUT_BATCH_REGVAL(R500_RS_IP_0,
 275                      (0 << R500_RS_IP_TEX_PTR_S_SHIFT) |
 276                      (1 << R500_RS_IP_TEX_PTR_T_SHIFT) |
 277                      (2 << R500_RS_IP_TEX_PTR_R_SHIFT) |
 278                      (3 << R500_RS_IP_TEX_PTR_Q_SHIFT));
 279     END_BATCH();
 280 }
 281
 282 static void r300_emit_fp_setup(struct r300_context *r300,
 283                                struct r300_fragment_program_code *code,
 284                                gl_format dst_format)
 285 {
 286     unsigned i;
 287     BATCH_LOCALS(&r300->radeon);
 288
 289     BEGIN_BATCH((code->alu.length + 1) * 4 + code->tex.length + 1 + 11);
 290
 291     OUT_BATCH_REGSEQ(R300_US_ALU_RGB_INST_0, code->alu.length);
 292     for (i = 0; i < code->alu.length; i++) {
 293         OUT_BATCH(code->alu.inst[i].rgb_inst);
 294     }
 295     OUT_BATCH_REGSEQ(R300_US_ALU_RGB_ADDR_0, code->alu.length);
 296     for (i = 0; i < code->alu.length; i++) {
 297         OUT_BATCH(code->alu.inst[i].rgb_addr);
 298     }
 299     OUT_BATCH_REGSEQ(R300_US_ALU_ALPHA_INST_0, code->alu.length);
 300     for (i = 0; i < code->alu.length; i++) {
 301         OUT_BATCH(code->alu.inst[i].alpha_inst);
 302     }
 303     OUT_BATCH_REGSEQ(R300_US_ALU_ALPHA_ADDR_0, code->alu.length);
 304     for (i = 0; i < code->alu.length; i++) {
 305         OUT_BATCH(code->alu.inst[i].alpha_addr);
 306     }
 307
 308     OUT_BATCH_REGSEQ(R300_US_TEX_INST_0, code->tex.length);
 309     OUT_BATCH_TABLE(code->tex.inst, code->tex.length);
 310
 311     OUT_BATCH_REGSEQ(R300_US_CONFIG, 3);
 312     OUT_BATCH(R300_PFS_CNTL_FIRST_NODE_HAS_TEX);
 313     OUT_BATCH(code->pixsize);
 314     OUT_BATCH(code->code_offset);
 315     OUT_BATCH_REGSEQ(R300_US_CODE_ADDR_0, 4);
 316     OUT_BATCH_TABLE(code->code_addr, 4);
 317     OUT_BATCH_REGVAL(R500_US_OUT_FMT_0, mesa_format_to_us_format(dst_format));
 318     END_BATCH();
 319 }
 320
 321 static void r300_emit_rs_setup(struct r300_context *r300)
 322 {
 323     BATCH_LOCALS(&r300->radeon);
 324
 325     BEGIN_BATCH(7);
 326     OUT_BATCH_REGSEQ(R300_RS_COUNT, 2);
 327     OUT_BATCH((4 << R300_IT_COUNT_SHIFT) | R300_HIRES_EN);
 328     OUT_BATCH(0);
 329     OUT_BATCH_REGVAL(R300_RS_INST_0,
 330                      R300_RS_INST_TEX_ID(0) |
 331                      R300_RS_INST_TEX_ADDR(0) |
 332                      R300_RS_INST_TEX_CN_WRITE);
 333     OUT_BATCH_REGVAL(R300_RS_IP_0,
 334                      R300_RS_TEX_PTR(0) |
 335                      R300_RS_SEL_S(R300_RS_SEL_C0) |
 336                      R300_RS_SEL_T(R300_RS_SEL_C1) |
 337                      R300_RS_SEL_R(R300_RS_SEL_K0) |
 338                      R300_RS_SEL_Q(R300_RS_SEL_K1));
 339     END_BATCH();
 340 }
 341
 342 static void emit_pvs_setup(struct r300_context *r300,
 343                            uint32_t *vp_code,
 344                            unsigned vp_len)
 345 {
 346     BATCH_LOCALS(&r300->radeon);
 347
 348     r300_emit_vpu(r300, vp_code, vp_len * 4, R300_PVS_CODE_START);
 349
 350     BEGIN_BATCH(4);
 351     OUT_BATCH_REGSEQ(R300_VAP_PVS_CODE_CNTL_0, 3);
 352     OUT_BATCH((0 << R300_PVS_FIRST_INST_SHIFT) |
 353               ((vp_len - 1)  << R300_PVS_XYZW_VALID_INST_SHIFT) |
 354               ((vp_len - 1)<< R300_PVS_LAST_INST_SHIFT));
 355     OUT_BATCH(0);
 356     OUT_BATCH((vp_len - 1) << R300_PVS_LAST_VTX_SRC_INST_SHIFT);
 357     END_BATCH();
 358 }
 359
 360 static void emit_vap_setup(struct r300_context *r300)
 361 {
 362     int tex_offset;
 363     BATCH_LOCALS(&r300->radeon);
 364
 365     if (r300->options.hw_tcl_enabled)
 366         tex_offset = 1;
 367     else
 368         tex_offset = 6;
 369
 370     BEGIN_BATCH(12);
 371     OUT_BATCH_REGSEQ(R300_SE_VTE_CNTL, 2);
 372     OUT_BATCH(R300_VTX_XY_FMT | R300_VTX_Z_FMT);
 373     OUT_BATCH(4);
 374
 375     OUT_BATCH_REGVAL(R300_VAP_PSC_SGN_NORM_CNTL, 0xaaaaaaaa);
 376     OUT_BATCH_REGVAL(R300_VAP_PROG_STREAM_CNTL_0,
 377                      ((R300_DATA_TYPE_FLOAT_2 | (0 << R300_DST_VEC_LOC_SHIFT)) << 0) |
 378                      (((tex_offset << R300_DST_VEC_LOC_SHIFT) | R300_DATA_TYPE_FLOAT_2 | R300_LAST_VEC) << 16));
 379     OUT_BATCH_REGVAL(R300_VAP_PROG_STREAM_CNTL_EXT_0,
 380                     ((((R300_SWIZZLE_SELECT_X << R300_SWIZZLE_SELECT_X_SHIFT) |
 381                        (R300_SWIZZLE_SELECT_Y << R300_SWIZZLE_SELECT_Y_SHIFT) |
 382                        (R300_SWIZZLE_SELECT_FP_ZERO << R300_SWIZZLE_SELECT_Z_SHIFT) |
 383                        (R300_SWIZZLE_SELECT_FP_ONE << R300_SWIZZLE_SELECT_W_SHIFT) |
 384                        (0xf << R300_WRITE_ENA_SHIFT) ) << 0) |
 385                      (((R300_SWIZZLE_SELECT_X << R300_SWIZZLE_SELECT_X_SHIFT) |
 386                        (R300_SWIZZLE_SELECT_Y << R300_SWIZZLE_SELECT_Y_SHIFT) |
 387                        (R300_SWIZZLE_SELECT_FP_ZERO << R300_SWIZZLE_SELECT_Z_SHIFT) |
 388                        (R300_SWIZZLE_SELECT_FP_ONE << R300_SWIZZLE_SELECT_W_SHIFT) |
 389                        (0xf << R300_WRITE_ENA_SHIFT) ) << 16) ) );
 390     OUT_BATCH_REGSEQ(R300_VAP_OUTPUT_VTX_FMT_0, 2);
 391     OUT_BATCH(R300_VAP_OUTPUT_VTX_FMT_0__POS_PRESENT);
 392     OUT_BATCH(R300_VAP_OUTPUT_VTX_FMT_1__4_COMPONENTS);
 393     END_BATCH();
 394 }
 395
 396 static GLboolean validate_buffers(struct r300_context *r300,
 397                                   struct radeon_bo *src_bo,
 398                                   struct radeon_bo *dst_bo)
 399 {
 400     int ret;
 401
 402     radeon_cs_space_reset_bos(r300->radeon.cmdbuf.cs);
 403
 404     ret = radeon_cs_space_check_with_bo(r300->radeon.cmdbuf.cs,
 405                                         src_bo, RADEON_GEM_DOMAIN_VRAM | RADEON_GEM_DOMAIN_GTT, 0);
 406     if (ret)
 407         return GL_FALSE;
 408
 409     ret = radeon_cs_space_check_with_bo(r300->radeon.cmdbuf.cs,
 410                                         dst_bo, 0, RADEON_GEM_DOMAIN_VRAM | RADEON_GEM_DOMAIN_GTT);
 411     if (ret)
 412         return GL_FALSE;
 413
 414     return GL_TRUE;
 415 }
 416
 417 /**
 418  * Calculate texcoords for given image region.
 419  * Output values are [minx, maxx, miny, maxy]
 420  */
 421 static void calc_tex_coords(float img_width, float img_height,
 422                             float x, float y,
 423                             float reg_width, float reg_height,
 424                             unsigned flip_y, float *buf)
 425 {
 426     buf[0] = x / img_width;
 427     buf[1] = buf[0] + reg_width / img_width;
 428     buf[2] = y / img_height;
 429     buf[3] = buf[2] + reg_height / img_height;
 430     if (flip_y)
 431     {
 432         buf[2] = 1.0 - buf[2];
 433         buf[3] = 1.0 - buf[3];
 434     }
 435 }
 436
 437 static void emit_draw_packet(struct r300_context *r300,
 438                              unsigned src_width, unsigned src_height,
 439                              unsigned src_x_offset, unsigned src_y_offset,
 440                              unsigned dst_x_offset, unsigned dst_y_offset,
 441                              unsigned reg_width, unsigned reg_height,
 442                              unsigned flip_y)
 443 {
 444     float texcoords[4];
 445
 446     calc_tex_coords(src_width, src_height,
 447                     src_x_offset, src_y_offset,
 448                     reg_width, reg_height,
 449                     flip_y, texcoords);
 450
 451     float verts[] = { dst_x_offset, dst_y_offset,
 452                       texcoords[0], texcoords[2],
 453                       dst_x_offset, dst_y_offset + reg_height,
 454                       texcoords[0], texcoords[3],
 455                       dst_x_offset + reg_width, dst_y_offset + reg_height,
 456                       texcoords[1], texcoords[3],
 457                       dst_x_offset + reg_width, dst_y_offset,
 458                       texcoords[1], texcoords[2] };
 459
 460     BATCH_LOCALS(&r300->radeon);
 461
 462     BEGIN_BATCH(19);
 463     OUT_BATCH_PACKET3(R300_PACKET3_3D_DRAW_IMMD_2, 16);
 464     OUT_BATCH(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED |
 465               (4 << 16) | R300_VAP_VF_CNTL__PRIM_QUADS);
 466     OUT_BATCH_TABLE(verts, 16);
 467     END_BATCH();
 468 }
 469
 470 static void other_stuff(struct r300_context *r300)
 471 {
 472     BATCH_LOCALS(&r300->radeon);
 473
 474     BEGIN_BATCH(13);
 475     OUT_BATCH_REGVAL(R300_GA_POLY_MODE,
 476                      R300_GA_POLY_MODE_FRONT_PTYPE_TRI | R300_GA_POLY_MODE_BACK_PTYPE_TRI);
 477     OUT_BATCH_REGVAL(R300_SU_CULL_MODE, R300_FRONT_FACE_CCW);
 478     OUT_BATCH_REGVAL(R300_FG_FOG_BLEND, 0);
 479     OUT_BATCH_REGVAL(R300_FG_ALPHA_FUNC, 0);
 480     OUT_BATCH_REGSEQ(R300_RB3D_CBLEND, 2);
 481     OUT_BATCH(0x0);
 482     OUT_BATCH(0x0);
 483     OUT_BATCH_REGVAL(R300_ZB_CNTL, 0);
 484     END_BATCH();
 485     if (r300->options.hw_tcl_enabled) {
 486         BEGIN_BATCH(2);
 487         OUT_BATCH_REGVAL(R300_VAP_CLIP_CNTL, R300_CLIP_DISABLE);
 488         END_BATCH();
 489     }
 490 }
 491
 492 static void emit_cb_setup(struct r300_context *r300,
 493                           struct radeon_bo *bo,
 494                           intptr_t offset,
 495                           gl_format mesa_format,
 496                           unsigned pitch,
 497                           unsigned width,
 498                           unsigned height)
 499 {
 500     BATCH_LOCALS(&r300->radeon);
 501
 502     unsigned x1, y1, x2, y2;
 503     x1 = 0;
 504     y1 = 0;
 505     x2 = width - 1;
 506     y2 = height - 1;
 507
 508     if (r300->radeon.radeonScreen->chip_family < CHIP_FAMILY_RV515) {
 509         x1 += R300_SCISSORS_OFFSET;
 510         y1 += R300_SCISSORS_OFFSET;
 511         x2 += R300_SCISSORS_OFFSET;
 512         y2 += R300_SCISSORS_OFFSET;
 513     }
 514
 515     r300_emit_cb_setup(r300, bo, offset, mesa_format,
 516                        _mesa_get_format_bytes(mesa_format),
 517                        _mesa_format_row_stride(mesa_format, pitch));
 518
 519     BEGIN_BATCH_NO_AUTOSTATE(5);
 520     OUT_BATCH_REGSEQ(R300_SC_SCISSORS_TL, 2);
 521     OUT_BATCH((x1 << R300_SCISSORS_X_SHIFT)|(y1 << R300_SCISSORS_Y_SHIFT));
 522     OUT_BATCH((x2 << R300_SCISSORS_X_SHIFT)|(y2 << R300_SCISSORS_Y_SHIFT));
 523     OUT_BATCH_REGVAL(R300_RB3D_CCTL, 0);
 524     END_BATCH();
 525 }
 526
 527 unsigned r300_check_blit(gl_format dst_format)
 528 {
 529     switch (dst_format) {
 530         case MESA_FORMAT_RGB565:
 531         case MESA_FORMAT_ARGB1555:
 532         case MESA_FORMAT_RGBA8888:
 533         case MESA_FORMAT_RGBA8888_REV:
 534         case MESA_FORMAT_ARGB8888:
 535         case MESA_FORMAT_ARGB8888_REV:
 536         case MESA_FORMAT_XRGB8888:
 537             break;
 538         default:
 539             return 0;
 540     }
 541
 542     if (_mesa_get_format_bits(dst_format, GL_DEPTH_BITS) > 0)
 543         return 0;
 544
 545     return 1;
 546 }
 547
 548 /**
 549  * Copy a region of [@a width x @a height] pixels from source buffer
 550  * to destination buffer.
 551  * @param[in] r300 r300 context
 552  * @param[in] src_bo source radeon buffer object
 553  * @param[in] src_offset offset of the source image in the @a src_bo
 554  * @param[in] src_mesaformat source image format
 555  * @param[in] src_pitch aligned source image width
 556  * @param[in] src_width source image width
 557  * @param[in] src_height source image height
 558  * @param[in] src_x_offset x offset in the source image
 559  * @param[in] src_y_offset y offset in the source image
 560  * @param[in] dst_bo destination radeon buffer object
 561  * @param[in] dst_offset offset of the destination image in the @a dst_bo
 562  * @param[in] dst_mesaformat destination image format
 563  * @param[in] dst_pitch aligned destination image width
 564  * @param[in] dst_width destination image width
 565  * @param[in] dst_height destination image height
 566  * @param[in] dst_x_offset x offset in the destination image
 567  * @param[in] dst_y_offset y offset in the destination image
 568  * @param[in] width region width
 569  * @param[in] height region height
 570  * @param[in] flip_y set if y coords of the source image need to be flipped
 571  */
 572 unsigned r300_blit(GLcontext *ctx,
 573                    struct radeon_bo *src_bo,
 574                    intptr_t src_offset,
 575                    gl_format src_mesaformat,
 576                    unsigned src_pitch,
 577                    unsigned src_width,
 578                    unsigned src_height,
 579                    unsigned src_x_offset,
 580                    unsigned src_y_offset,
 581                    struct radeon_bo *dst_bo,
 582                    intptr_t dst_offset,
 583                    gl_format dst_mesaformat,
 584                    unsigned dst_pitch,
 585                    unsigned dst_width,
 586                    unsigned dst_height,
 587                    unsigned dst_x_offset,
 588                    unsigned dst_y_offset,
 589                    unsigned reg_width,
 590                    unsigned reg_height,
 591                    unsigned flip_y)
 592 {
 593     r300ContextPtr r300 = R300_CONTEXT(ctx);
 594
 595     if (!r300_check_blit(dst_mesaformat))
 596         return 0;
 597
 598     /* Make sure that colorbuffer has even width - hw limitation */
 599     if (dst_pitch % 2 > 0)
 600         ++dst_pitch;
 601
 602     /* Need to clamp the region size to make sure
 603      * we don't read outside of the source buffer
 604      * or write outside of the destination buffer.
 605      */
 606     if (reg_width + src_x_offset > src_width)
 607         reg_width = src_width - src_x_offset;
 608     if (reg_height + src_y_offset > src_height)
 609         reg_height = src_height - src_y_offset;
 610     if (reg_width + dst_x_offset > dst_width)
 611         reg_width = dst_width - dst_x_offset;
 612     if (reg_height + dst_y_offset > dst_height)
 613         reg_height = dst_height - dst_y_offset;
 614
 615     if (src_bo == dst_bo) {
 616         return 0;
 617     }
 618
 619     if (src_offset % 32 || dst_offset % 32) {
 620         return GL_FALSE;
 621     }
 622
 623     if (0) {
 624         fprintf(stderr, "src: size [%d x %d], pitch %d, "
 625                 "offset [%d x %d], format %s, bo %p\n",
 626                 src_width, src_height, src_pitch,
 627                 src_x_offset, src_y_offset,
 628                 _mesa_get_format_name(src_mesaformat),
 629                 src_bo);
 630         fprintf(stderr, "dst: pitch %d, offset[%d x %d], format %s, bo %p\n",
 631                 dst_pitch, dst_x_offset, dst_y_offset,
 632                 _mesa_get_format_name(dst_mesaformat), dst_bo);
 633         fprintf(stderr, "region: %d x %d\n", reg_width, reg_height);
 634     }
 635
 636     /* Flush is needed to make sure that source buffer has correct data */
 637     radeonFlush(r300->radeon.glCtx);
 638
 639     if (!validate_buffers(r300, src_bo, dst_bo))
 640         return 0;
 641
 642     rcommonEnsureCmdBufSpace(&r300->radeon, 200, __FUNCTION__);
 643
 644     other_stuff(r300);
 645
 646     r300_emit_tx_setup(r300, src_mesaformat, src_bo, src_offset, src_width, src_height, src_pitch);
 647
 648     if (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515) {
 649         r500_emit_fp_setup(r300, &r300->blit.fp_code.code.r500, dst_mesaformat);
 650         r500_emit_rs_setup(r300);
 651     } else {
 652         r300_emit_fp_setup(r300, &r300->blit.fp_code.code.r300, dst_mesaformat);
 653         r300_emit_rs_setup(r300);
 654     }
 655
 656     if (r300->options.hw_tcl_enabled)
 657         emit_pvs_setup(r300, r300->blit.vp_code.body.d, 2);
 658
 659     emit_vap_setup(r300);
 660
 661     emit_cb_setup(r300, dst_bo, dst_offset, dst_mesaformat, dst_pitch, dst_width, dst_height);
 662
 663     emit_draw_packet(r300, src_width, src_height,
 664                      src_x_offset, src_y_offset,
 665                      dst_x_offset, dst_y_offset,
 666                      reg_width, reg_height,
 667                      flip_y);
 668
 669     r300EmitCacheFlush(r300);
 670
 671     radeonFlush(r300->radeon.glCtx);
 672
 673     return 1;
 674 }