#include "etnaviv_context.h"
#include "etnaviv_debug.h"
#include "etnaviv_disasm.h"
+#include "etnaviv_nir.h"
#include "etnaviv_uniforms.h"
#include "etnaviv_util.h"
const struct etna_specs *specs;
struct etna_shader_variant *variant;
- /* register assigned to each output, indexed by driver_location */
- unsigned output_reg[ETNA_NUM_INPUTS];
-
/* block # to instr index */
unsigned *block_ptr;
int inst_ptr; /* current instruction pointer */
struct etna_inst code[ETNA_MAX_INSTRUCTIONS * ETNA_INST_SIZE];
+ /* constants */
+ uint64_t consts[ETNA_MAX_IMM];
+
/* There was an error during compilation */
bool error;
};
-#define compile_error(ctx, args...) ({ \
- printf(args); \
- ctx->error = true; \
- assert(0); \
-})
-
-/* io related lowering
- * run after lower_int_to_float because it adds i2f/f2i ops
- */
-static void
-etna_lower_io(nir_shader *shader, struct etna_shader_variant *v)
-{
- bool rb_swap = shader->info.stage == MESA_SHADER_FRAGMENT && v->key.frag_rb_swap;
-
- unsigned color_location = 0;
- nir_foreach_variable(var, &shader->outputs) {
- switch (var->data.location) {
- case FRAG_RESULT_COLOR:
- case FRAG_RESULT_DATA0:
- color_location = var->data.driver_location;
- break;
- }
- }
- nir_foreach_function(function, shader) {
- nir_builder b;
- nir_builder_init(&b, function->impl);
-
- nir_foreach_block(block, function->impl) {
- nir_foreach_instr_safe(instr, block) {
- if (instr->type == nir_instr_type_intrinsic) {
- nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr);
-
- switch (intr->intrinsic) {
- case nir_intrinsic_load_front_face: {
- /* HW front_face is 0.0/1.0, not 0/~0u for bool
- * lower with a comparison with 0
- */
- intr->dest.ssa.bit_size = 32;
-
- b.cursor = nir_after_instr(instr);
-
- nir_ssa_def *ssa = nir_ine(&b, &intr->dest.ssa, nir_imm_int(&b, 0));
- if (v->key.front_ccw)
- nir_instr_as_alu(ssa->parent_instr)->op = nir_op_ieq;
-
- nir_ssa_def_rewrite_uses_after(&intr->dest.ssa,
- nir_src_for_ssa(ssa),
- ssa->parent_instr);
- } break;
- case nir_intrinsic_store_output: {
- if (!rb_swap || nir_intrinsic_base(intr) != color_location)
- break;
- b.cursor = nir_before_instr(instr);
-
- nir_ssa_def *ssa = nir_mov(&b, intr->src[0].ssa);
- nir_alu_instr *alu = nir_instr_as_alu(ssa->parent_instr);
- alu->src[0].swizzle[0] = 2;
- alu->src[0].swizzle[2] = 0;
- nir_instr_rewrite_src(instr, &intr->src[0], nir_src_for_ssa(ssa));
- } break;
- case nir_intrinsic_load_uniform: {
- /* multiply by 16 and convert to int */
- b.cursor = nir_before_instr(instr);
- nir_ssa_def *ssa = nir_imul(&b, intr->src[0].ssa, nir_imm_int(&b, 16));
- nir_instr_rewrite_src(instr, &intr->src[0], nir_src_for_ssa(ssa));
- } break;
- default:
- break;
- }
- }
-
- if (instr->type != nir_instr_type_tex)
- continue;
-
- nir_tex_instr *tex = nir_instr_as_tex(instr);
- nir_src *coord = NULL;
- nir_src *lod_bias = NULL;
- unsigned lod_bias_idx;
-
- assert(tex->sampler_index == tex->texture_index);
-
- for (unsigned i = 0; i < tex->num_srcs; i++) {
- switch (tex->src[i].src_type) {
- case nir_tex_src_coord:
- coord = &tex->src[i].src;
- break;
- case nir_tex_src_bias:
- case nir_tex_src_lod:
- assert(!lod_bias);
- lod_bias = &tex->src[i].src;
- lod_bias_idx = i;
- break;
- default:
- assert(0);
- break;
- }
- }
-
- if (tex->sampler_dim == GLSL_SAMPLER_DIM_RECT) {
- /* use a dummy load_uniform here to represent texcoord scale */
- b.cursor = nir_before_instr(instr);
- nir_intrinsic_instr *load =
- nir_intrinsic_instr_create(b.shader, nir_intrinsic_load_uniform);
- nir_intrinsic_set_base(load, ~tex->sampler_index);
- load->num_components = 2;
- load->src[0] = nir_src_for_ssa(nir_imm_float(&b, 0.0f));
- nir_ssa_dest_init(&load->instr, &load->dest, 2, 32, NULL);
- nir_intrinsic_set_type(load, nir_type_float);
-
- nir_builder_instr_insert(&b, &load->instr);
-
- nir_ssa_def *new_coord = nir_fmul(&b, coord->ssa, &load->dest.ssa);
- nir_instr_rewrite_src(&tex->instr, coord, nir_src_for_ssa(new_coord));
- }
-
- /* pre HALTI5 needs texture sources in a single source */
-
- if (!lod_bias || v->shader->specs->halti >= 5)
- continue;
-
- assert(coord && lod_bias && tex->coord_components < 4);
-
- nir_alu_instr *vec = nir_alu_instr_create(shader, nir_op_vec4);
- for (unsigned i = 0; i < tex->coord_components; i++) {
- vec->src[i].src = nir_src_for_ssa(coord->ssa);
- vec->src[i].swizzle[0] = i;
- }
- for (unsigned i = tex->coord_components; i < 4; i++)
- vec->src[i].src = nir_src_for_ssa(lod_bias->ssa);
-
- vec->dest.write_mask = 0xf;
- nir_ssa_dest_init(&vec->instr, &vec->dest.dest, 4, 32, NULL);
-
- nir_tex_instr_remove_src(tex, lod_bias_idx);
- nir_instr_rewrite_src(&tex->instr, coord, nir_src_for_ssa(&vec->dest.dest.ssa));
- tex->coord_components = 4;
-
- nir_instr_insert_before(&tex->instr, &vec->instr);
- }
- }
- }
-}
static bool
etna_alu_to_scalar_filter_cb(const nir_instr *instr, const void *data)
}
static void
-etna_lower_alu_impl(nir_function_impl *impl, struct etna_compile *c)
+etna_lower_alu_impl(nir_function_impl *impl, bool has_new_transcendentals)
{
nir_shader *shader = impl->function->shader;
if (alu->op == nir_op_fsin || alu->op == nir_op_fcos) {
b.cursor = nir_before_instr(instr);
- nir_ssa_def *imm = c->specs->has_new_transcendentals ?
+ nir_ssa_def *imm = has_new_transcendentals ?
nir_imm_float(&b, 1.0 / M_PI) :
nir_imm_float(&b, 2.0 / M_PI);
/* change transcendental ops to vec2 and insert vec1 mul for the result
* TODO: do this earlier (but it breaks with optimizations)
*/
- if (c->specs->has_new_transcendentals && (
+ if (has_new_transcendentals && (
alu->op == nir_op_fdiv || alu->op == nir_op_flog2 ||
alu->op == nir_op_fsin || alu->op == nir_op_fcos)) {
nir_ssa_def *ssa = &alu->dest.dest.ssa;
}
}
-static void etna_lower_alu(nir_shader *shader, struct etna_compile *c)
+static void etna_lower_alu(nir_shader *shader, bool has_new_transcendentals)
{
nir_foreach_function(function, shader) {
if (function->impl)
- etna_lower_alu_impl(function->impl, c);
+ etna_lower_alu_impl(function->impl, has_new_transcendentals);
}
}
static void
etna_emit_tex(struct etna_compile *c, nir_texop op, unsigned texid, unsigned dst_swiz,
struct etna_inst_dst dst, struct etna_inst_src coord,
- struct etna_inst_src lod_bias)
+ struct etna_inst_src lod_bias, struct etna_inst_src compare)
{
struct etna_inst inst = {
.dst = dst,
if (lod_bias.use)
inst.src[1] = lod_bias;
+ if (compare.use)
+ inst.src[2] = compare;
+
switch (op) {
case nir_texop_tex: inst.opcode = INST_OPCODE_TEXLD; break;
case nir_texop_txb: inst.opcode = INST_OPCODE_TEXLDB; break;
}
static void
-etna_emit_output(struct etna_compile *c, unsigned index, struct etna_inst_src src)
+etna_emit_output(struct etna_compile *c, nir_variable *var, struct etna_inst_src src)
{
- c->output_reg[index] = src.reg;
-}
-
-static void
-etna_emit_load_ubo(struct etna_compile *c, struct etna_inst_dst dst,
- struct etna_inst_src src, struct etna_inst_src base)
-{
- /* convert float offset back to integer */
- if (c->specs->halti < 2) {
- emit_inst(c, &(struct etna_inst) {
- .opcode = INST_OPCODE_F2I,
- .type = INST_TYPE_U32,
- .dst = dst,
- .src[0] = src,
- });
-
- emit_inst(c, &(struct etna_inst) {
- .opcode = INST_OPCODE_LOAD,
- .type = INST_TYPE_U32,
- .dst = dst,
- .src[0] = {
- .use = 1,
- .rgroup = INST_RGROUP_TEMP,
- .reg = dst.reg,
- .swiz = INST_SWIZ_BROADCAST(ffs(dst.write_mask) - 1)
- },
- .src[1] = base,
- });
+ struct etna_shader_io_file *sf = &c->variant->outfile;
+ if (is_fs(c)) {
+ switch (var->data.location) {
+ case FRAG_RESULT_COLOR:
+ case FRAG_RESULT_DATA0: /* DATA0 is used by gallium shaders for color */
+ c->variant->ps_color_out_reg = src.reg;
+ break;
+ case FRAG_RESULT_DEPTH:
+ c->variant->ps_depth_out_reg = src.reg;
+ break;
+ default:
+ unreachable("Unsupported fs output");
+ }
return;
}
- emit_inst(c, &(struct etna_inst) {
- .opcode = INST_OPCODE_LOAD,
- .type = INST_TYPE_U32,
- .dst = dst,
- .src[0] = src,
- .src[1] = base,
- });
+ switch (var->data.location) {
+ case VARYING_SLOT_POS:
+ c->variant->vs_pos_out_reg = src.reg;
+ break;
+ case VARYING_SLOT_PSIZ:
+ c->variant->vs_pointsize_out_reg = src.reg;
+ break;
+ default:
+ sf->reg[sf->num_reg].reg = src.reg;
+ sf->reg[sf->num_reg].slot = var->data.location;
+ sf->reg[sf->num_reg].num_components = glsl_get_components(var->type);
+ sf->num_reg++;
+ break;
+ }
}
#define OPT(nir, pass, ...) ({ \
#include "etnaviv_compiler_nir_emit.h"
+static bool
+etna_compile_check_limits(struct etna_shader_variant *v)
+{
+ const struct etna_specs *specs = v->shader->specs;
+ int max_uniforms = (v->stage == MESA_SHADER_VERTEX)
+ ? specs->max_vs_uniforms
+ : specs->max_ps_uniforms;
+
+ if (!specs->has_icache && v->needs_icache) {
+ DBG("Number of instructions (%d) exceeds maximum %d", v->code_size / 4,
+ specs->max_instructions);
+ return false;
+ }
+
+ if (v->num_temps > specs->max_registers) {
+ DBG("Number of registers (%d) exceeds maximum %d", v->num_temps,
+ specs->max_registers);
+ return false;
+ }
+
+ if (v->uniforms.imm_count / 4 > max_uniforms) {
+ DBG("Number of uniforms (%d) exceeds maximum %d",
+ v->uniforms.imm_count / 4, max_uniforms);
+ return false;
+ }
+
+ return true;
+}
+
+static void
+fill_vs_mystery(struct etna_shader_variant *v)
+{
+ const struct etna_specs *specs = v->shader->specs;
+
+ v->input_count_unk8 = DIV_ROUND_UP(v->infile.num_reg + 4, 16); /* XXX what is this */
+
+ /* fill in "mystery meat" load balancing value. This value determines how
+ * work is scheduled between VS and PS
+ * in the unified shader architecture. More precisely, it is determined from
+ * the number of VS outputs, as well as chip-specific
+ * vertex output buffer size, vertex cache size, and the number of shader
+ * cores.
+ *
+ * XXX this is a conservative estimate, the "optimal" value is only known for
+ * sure at link time because some
+ * outputs may be unused and thus unmapped. Then again, in the general use
+ * case with GLSL the vertex and fragment
+ * shaders are linked already before submitting to Gallium, thus all outputs
+ * are used.
+ *
+ * note: TGSI compiler counts all outputs (including position and pointsize), here
+ * v->outfile.num_reg only counts varyings, +1 to compensate for the position output
+ * TODO: might have a problem that we don't count pointsize when it is used
+ */
+
+ int half_out = v->outfile.num_reg / 2 + 1;
+ assert(half_out);
+
+ uint32_t b = ((20480 / (specs->vertex_output_buffer_size -
+ 2 * half_out * specs->vertex_cache_size)) +
+ 9) /
+ 10;
+ uint32_t a = (b + 256 / (specs->shader_core_count * half_out)) / 2;
+ v->vs_load_balancing = VIVS_VS_LOAD_BALANCING_A(MIN2(a, 255)) |
+ VIVS_VS_LOAD_BALANCING_B(MIN2(b, 255)) |
+ VIVS_VS_LOAD_BALANCING_C(0x3f) |
+ VIVS_VS_LOAD_BALANCING_D(0x0f);
+}
+
bool
etna_compile_shader_nir(struct etna_shader_variant *v)
{
assert(sf->num_reg == count);
}
- NIR_PASS_V(s, nir_lower_io, nir_var_all, etna_glsl_type_size,
+ NIR_PASS_V(s, nir_lower_io, ~nir_var_shader_out, etna_glsl_type_size,
(nir_lower_io_options)0);
OPT_V(s, nir_lower_regs_to_ssa);
OPT_V(s, etna_lower_io, v);
+ if (v->shader->specs->vs_need_z_div)
+ NIR_PASS_V(s, nir_lower_clip_halfz);
+
/* lower pre-halti2 to float (halti0 has integers, but only scalar..) */
if (c->specs->halti < 2) {
/* use opt_algebraic between int_to_float and boot_to_float because
OPT_V(s, nir_opt_algebraic);
OPT_V(s, nir_lower_bool_to_float);
} else {
- OPT_V(s, nir_lower_idiv);
+ OPT_V(s, nir_lower_idiv, nir_lower_idiv_fast);
OPT_V(s, nir_lower_bool_to_int32);
}
while( OPT(s, nir_opt_vectorize) );
OPT_V(s, nir_lower_alu_to_scalar, etna_alu_to_scalar_filter_cb, specs);
- NIR_PASS_V(s, nir_remove_dead_variables, nir_var_function_temp);
+ NIR_PASS_V(s, nir_remove_dead_variables, nir_var_function_temp, NULL);
NIR_PASS_V(s, nir_opt_algebraic_late);
NIR_PASS_V(s, nir_move_vec_src_uses_to_dest);
NIR_PASS_V(s, nir_opt_dce);
- NIR_PASS_V(s, etna_lower_alu, c);
+ NIR_PASS_V(s, etna_lower_alu, c->specs->has_new_transcendentals);
if (DBG_ENABLED(ETNA_DBG_DUMP_SHADERS))
nir_print_shader(s, stdout);
- uint64_t consts[ETNA_MAX_IMM] = {};
-
unsigned block_ptr[nir_shader_get_entrypoint(s)->num_blocks];
c->block_ptr = block_ptr;
- struct emit_options options = {
- .max_temps = ETNA_MAX_TEMPS,
- .max_consts = ETNA_MAX_IMM / 4,
- .id_reg = sf->num_reg,
- .single_const_src = c->specs->halti < 5,
- .etna_new_transcendentals = c->specs->has_new_transcendentals,
- .no_integers = c->specs->halti < 2,
- .user = c,
- .consts = consts,
- };
unsigned num_consts;
- ASSERTED bool ok = emit_shader(c->nir, &options, &v->num_temps, &num_consts);
+ ASSERTED bool ok = emit_shader(c, &v->num_temps, &num_consts);
assert(ok);
/* empty shader, emit NOP */
emit_inst(c, &(struct etna_inst) { .opcode = INST_OPCODE_NOP });
/* assemble instructions, fixing up labels */
- uint32_t *code = MALLOC(c->inst_ptr * 16 + 1024);
+ uint32_t *code = MALLOC(c->inst_ptr * 16);
for (unsigned i = 0; i < c->inst_ptr; i++) {
struct etna_inst *inst = &c->code[i];
if (inst->opcode == INST_OPCODE_BRANCH)
v->code = code;
v->needs_icache = c->inst_ptr > specs->max_instructions;
- copy_uniform_state_to_shader(v, consts, num_consts);
+ copy_uniform_state_to_shader(v, c->consts, num_consts);
if (s->info.stage == MESA_SHADER_FRAGMENT) {
v->input_count_unk8 = 31; /* XXX what is this */
-
- nir_foreach_variable(var, &s->outputs) {
- unsigned reg = c->output_reg[var->data.driver_location];
- switch (var->data.location) {
- case FRAG_RESULT_COLOR:
- case FRAG_RESULT_DATA0: /* DATA0 is used by gallium shaders for color */
- v->ps_color_out_reg = reg;
- break;
- case FRAG_RESULT_DEPTH:
- v->ps_depth_out_reg = reg;
- break;
- default:
- compile_error(c, "Unsupported fs output %s\n", gl_frag_result_name(var->data.location));
- }
- }
assert(v->ps_depth_out_reg <= 0);
- v->outfile.num_reg = 0;
- ralloc_free(c->nir);
- FREE(c);
- return true;
- }
-
- v->input_count_unk8 = DIV_ROUND_UP(v->infile.num_reg + 4, 16); /* XXX what is this */
-
- sf = &v->outfile;
- sf->num_reg = 0;
- nir_foreach_variable(var, &s->outputs) {
- unsigned native = c->output_reg[var->data.driver_location];
-
- if (var->data.location == VARYING_SLOT_POS) {
- v->vs_pos_out_reg = native;
- continue;
- }
-
- if (var->data.location == VARYING_SLOT_PSIZ) {
- v->vs_pointsize_out_reg = native;
- continue;
- }
-
- sf->reg[sf->num_reg].reg = native;
- sf->reg[sf->num_reg].slot = var->data.location;
- sf->reg[sf->num_reg].num_components = glsl_get_components(var->type);
- sf->num_reg++;
+ } else {
+ fill_vs_mystery(v);
}
- /* fill in "mystery meat" load balancing value. This value determines how
- * work is scheduled between VS and PS
- * in the unified shader architecture. More precisely, it is determined from
- * the number of VS outputs, as well as chip-specific
- * vertex output buffer size, vertex cache size, and the number of shader
- * cores.
- *
- * XXX this is a conservative estimate, the "optimal" value is only known for
- * sure at link time because some
- * outputs may be unused and thus unmapped. Then again, in the general use
- * case with GLSL the vertex and fragment
- * shaders are linked already before submitting to Gallium, thus all outputs
- * are used.
- *
- * note: TGSI compiler counts all outputs (including position and pointsize), here
- * v->outfile.num_reg only counts varyings, +1 to compensate for the position output
- * TODO: might have a problem that we don't count pointsize when it is used
- */
-
- int half_out = v->outfile.num_reg / 2 + 1;
- assert(half_out);
-
- uint32_t b = ((20480 / (specs->vertex_output_buffer_size -
- 2 * half_out * specs->vertex_cache_size)) +
- 9) /
- 10;
- uint32_t a = (b + 256 / (specs->shader_core_count * half_out)) / 2;
- v->vs_load_balancing = VIVS_VS_LOAD_BALANCING_A(MIN2(a, 255)) |
- VIVS_VS_LOAD_BALANCING_B(MIN2(b, 255)) |
- VIVS_VS_LOAD_BALANCING_C(0x3f) |
- VIVS_VS_LOAD_BALANCING_D(0x0f);
-
+ bool result = etna_compile_check_limits(v);
ralloc_free(c->nir);
FREE(c);
- return true;
+ return result;
}
void
projects / mesa.git / blobdiff