diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_eu_emit.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c index 0906150613b..d715b5f838b 100644 --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c @@ -103,12 +103,80 @@ static void brw_set_dest( struct brw_instruction *insn, guess_execution_size(insn, dest); } +static void +validate_reg(struct brw_instruction *insn, struct brw_reg reg) +{ + int hstride_for_reg[] = {0, 1, 2, 4}; + int vstride_for_reg[] = {0, 1, 2, 4, 8, 16, 32, 64, 128, 256}; + int width_for_reg[] = {1, 2, 4, 8, 16}; + int execsize_for_reg[] = {1, 2, 4, 8, 16}; + int width, hstride, vstride, execsize; + + if (reg.file == BRW_IMMEDIATE_VALUE) + return; + + if (reg.file == BRW_ARCHITECTURE_REGISTER_FILE && + reg.file == BRW_ARF_NULL) + return; + + assert(reg.hstride >= 0 && reg.hstride < Elements(hstride_for_reg)); + hstride = hstride_for_reg[reg.hstride]; + + if (reg.vstride == 0xf) { + vstride = -1; + } else { + assert(reg.vstride >= 0 && reg.vstride < Elements(vstride_for_reg)); + vstride = vstride_for_reg[reg.vstride]; + } + + assert(reg.width >= 0 && reg.width < Elements(width_for_reg)); + width = width_for_reg[reg.width]; + + assert(insn->header.execution_size >= 0 && + insn->header.execution_size < Elements(execsize_for_reg)); + execsize = execsize_for_reg[insn->header.execution_size]; + + /* Restrictions from 3.3.10: Register Region Restrictions. */ + /* 3. */ + assert(execsize >= width); + + /* 4. */ + if (execsize == width && hstride != 0) { + assert(vstride == -1 || vstride == width * hstride); + } + + /* 5. */ + if (execsize == width && hstride == 0) { + /* no restriction on vstride. */ + } + + /* 6. */ + if (width == 1) { + assert(hstride == 0); + } + + /* 7. */ + if (execsize == 1 && width == 1) { + assert(hstride == 0); + assert(vstride == 0); + } + + /* 8. */ + if (vstride == 0 && hstride == 0) { + assert(width == 1); + } + + /* 10. Check destination issues. */ +} + static void brw_set_src0( struct brw_instruction *insn, struct brw_reg reg ) { if (reg.type != BRW_ARCHITECTURE_REGISTER_FILE) assert(reg.nr < 128); + validate_reg(insn, reg); + insn->bits1.da1.src0_reg_file = reg.file; insn->bits1.da1.src0_reg_type = reg.type; insn->bits2.da1.src0_abs = reg.abs; @@ -184,6 +252,8 @@ void brw_set_src1( struct brw_instruction *insn, assert(reg.nr < 128); + validate_reg(insn, reg); + insn->bits1.da1.src1_reg_file = reg.file; insn->bits1.da1.src1_reg_type = reg.type; insn->bits3.da1.src1_abs = reg.abs; |