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r600g: HW bug workaround for TGSI_OPCODE_BREAKC

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Signed-off-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Christoph Bumiller 2014-05-17 01:20:17 +02:00 • committed by Marek Olšák
parent 6544a4a342
commit 476aaf8b8e
3 changed files with 22 additions and 4 deletions
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1
src/gallium/drivers/r600/r600_asm.c
View file

@ -143,6 +143,7 @@ void r600_bytecode_init(struct r600_bytecode *bc,
LIST_INITHEAD(&bc->cf);
bc->chip_class = chip_class;
bc->family = family;
bc->has_compressed_msaa_texturing = has_compressed_msaa_texturing;
bc->stack.entry_size = stack_entry_size(family);
}

1
src/gallium/drivers/r600/r600_asm.h
View file

@ -196,6 +196,7 @@ struct r600_stack_info {
struct r600_bytecode {
enum chip_class chip_class;
enum radeon_family family;
bool has_compressed_msaa_texturing;
int type;
struct list_head cf;

24
src/gallium/drivers/r600/r600_shader.c
View file

@ -6280,10 +6280,26 @@ static int tgsi_loop_breakc(struct r600_shader_ctx *ctx)
return -EINVAL;
}
r = emit_logic_pred(ctx, ALU_OP2_PRED_SETE_INT, CF_OP_ALU_BREAK);
if (r)
return r;
fc_set_mid(ctx, fscp);
if (ctx->bc->chip_class == EVERGREEN &&
ctx->bc->family != CHIP_CYPRESS &&
ctx->bc->family != CHIP_JUNIPER) {
/* HW bug: ALU_BREAK does not save the active mask correctly */
r = tgsi_uif(ctx);
if (r)
return r;
r = r600_bytecode_add_cfinst(ctx->bc, CF_OP_LOOP_BREAK);
if (r)
return r;
fc_set_mid(ctx, fscp);
return tgsi_endif(ctx);
} else {
r = emit_logic_pred(ctx, ALU_OP2_PRED_SETE_INT, CF_OP_ALU_BREAK);
if (r)
return r;
fc_set_mid(ctx, fscp);
}
return 0;
}