[Mesa-dev] [PATCH 17/47] glsl: Add "built-in" functions to do round(fp64)
Elie Tournier
tournier.elie at gmail.com
Wed Aug 23 11:07:47 UTC 2017
Signed-off-by: Elie Tournier <elie.tournier at collabora.com>
---
src/compiler/glsl/builtin_float64.h | 225 ++++++++++++++++++++++++++++++++
src/compiler/glsl/builtin_functions.cpp | 4 +
src/compiler/glsl/builtin_functions.h | 3 +
src/compiler/glsl/float64.glsl | 41 ++++++
src/compiler/glsl/glcpp/glcpp-parse.y | 1 +
5 files changed, 274 insertions(+)
diff --git a/src/compiler/glsl/builtin_float64.h b/src/compiler/glsl/builtin_float64.h
index 2bce013d0e..97d6adfd9f 100644
--- a/src/compiler/glsl/builtin_float64.h
+++ b/src/compiler/glsl/builtin_float64.h
@@ -18254,3 +18254,228 @@ ftrunc64(void *mem_ctx, builtin_available_predicate avail)
sig->replace_parameters(&sig_parameters);
return sig;
}
+ir_function_signature *
+fround64(void *mem_ctx, builtin_available_predicate avail)
+{
+ ir_function_signature *const sig =
+ new(mem_ctx) ir_function_signature(glsl_type::uvec2_type, avail);
+ ir_factory body(&sig->body, mem_ctx);
+ sig->is_defined = true;
+
+ exec_list sig_parameters;
+
+ ir_variable *const r0F1C = new(mem_ctx) ir_variable(glsl_type::uvec2_type, "a", ir_var_function_in);
+ sig_parameters.push_tail(r0F1C);
+ ir_variable *const r0F1D = body.make_temp(glsl_type::bool_type, "execute_flag");
+ body.emit(assign(r0F1D, body.constant(true), 0x01));
+
+ ir_variable *const r0F1E = body.make_temp(glsl_type::uvec2_type, "return_value");
+ ir_variable *const r0F1F = new(mem_ctx) ir_variable(glsl_type::uint_type, "aLo", ir_var_auto);
+ body.emit(r0F1F);
+ ir_variable *const r0F20 = new(mem_ctx) ir_variable(glsl_type::uint_type, "aHi", ir_var_auto);
+ body.emit(r0F20);
+ ir_variable *const r0F21 = body.make_temp(glsl_type::int_type, "assignment_tmp");
+ ir_expression *const r0F22 = rshift(swizzle_y(r0F1C), body.constant(int(20)));
+ ir_expression *const r0F23 = bit_and(r0F22, body.constant(2047u));
+ ir_expression *const r0F24 = expr(ir_unop_u2i, r0F23);
+ body.emit(assign(r0F21, add(r0F24, body.constant(int(-1023))), 0x01));
+
+ body.emit(assign(r0F20, swizzle_y(r0F1C), 0x01));
+
+ body.emit(assign(r0F1F, swizzle_x(r0F1C), 0x01));
+
+ /* IF CONDITION */
+ ir_expression *const r0F26 = less(r0F21, body.constant(int(20)));
+ ir_if *f0F25 = new(mem_ctx) ir_if(operand(r0F26).val);
+ exec_list *const f0F25_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F25->then_instructions;
+
+ /* IF CONDITION */
+ ir_expression *const r0F28 = less(r0F21, body.constant(int(0)));
+ ir_if *f0F27 = new(mem_ctx) ir_if(operand(r0F28).val);
+ exec_list *const f0F27_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F27->then_instructions;
+
+ body.emit(assign(r0F20, bit_and(swizzle_y(r0F1C), body.constant(2147483648u)), 0x01));
+
+ /* IF CONDITION */
+ ir_expression *const r0F2A = equal(r0F21, body.constant(int(-1)));
+ ir_expression *const r0F2B = nequal(swizzle_x(r0F1C), body.constant(0u));
+ ir_expression *const r0F2C = logic_and(r0F2A, r0F2B);
+ ir_if *f0F29 = new(mem_ctx) ir_if(operand(r0F2C).val);
+ exec_list *const f0F29_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F29->then_instructions;
+
+ body.emit(assign(r0F20, bit_or(r0F20, body.constant(1072693248u)), 0x01));
+
+
+ body.instructions = f0F29_parent_instructions;
+ body.emit(f0F29);
+
+ /* END IF */
+
+ body.emit(assign(r0F1F, body.constant(0u), 0x01));
+
+
+ /* ELSE INSTRUCTIONS */
+ body.instructions = &f0F27->else_instructions;
+
+ ir_variable *const r0F2D = body.make_temp(glsl_type::uint_type, "assignment_tmp");
+ body.emit(assign(r0F2D, rshift(body.constant(1048575u), r0F21), 0x01));
+
+ /* IF CONDITION */
+ ir_expression *const r0F2F = bit_and(r0F20, r0F2D);
+ ir_expression *const r0F30 = equal(r0F2F, body.constant(0u));
+ ir_expression *const r0F31 = equal(r0F1F, body.constant(0u));
+ ir_expression *const r0F32 = logic_and(r0F30, r0F31);
+ ir_if *f0F2E = new(mem_ctx) ir_if(operand(r0F32).val);
+ exec_list *const f0F2E_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F2E->then_instructions;
+
+ body.emit(assign(r0F1E, r0F1C, 0x03));
+
+ body.emit(assign(r0F1D, body.constant(false), 0x01));
+
+
+ /* ELSE INSTRUCTIONS */
+ body.instructions = &f0F2E->else_instructions;
+
+ ir_expression *const r0F33 = rshift(body.constant(524288u), r0F21);
+ body.emit(assign(r0F20, add(r0F20, r0F33), 0x01));
+
+ ir_expression *const r0F34 = expr(ir_unop_bit_not, r0F2D);
+ body.emit(assign(r0F20, bit_and(r0F20, r0F34), 0x01));
+
+ body.emit(assign(r0F1F, body.constant(0u), 0x01));
+
+
+ body.instructions = f0F2E_parent_instructions;
+ body.emit(f0F2E);
+
+ /* END IF */
+
+
+ body.instructions = f0F27_parent_instructions;
+ body.emit(f0F27);
+
+ /* END IF */
+
+
+ /* ELSE INSTRUCTIONS */
+ body.instructions = &f0F25->else_instructions;
+
+ /* IF CONDITION */
+ ir_expression *const r0F36 = greater(r0F21, body.constant(int(51)));
+ ir_expression *const r0F37 = equal(r0F21, body.constant(int(1024)));
+ ir_expression *const r0F38 = logic_or(r0F36, r0F37);
+ ir_if *f0F35 = new(mem_ctx) ir_if(operand(r0F38).val);
+ exec_list *const f0F35_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F35->then_instructions;
+
+ body.emit(assign(r0F1E, r0F1C, 0x03));
+
+ body.emit(assign(r0F1D, body.constant(false), 0x01));
+
+
+ /* ELSE INSTRUCTIONS */
+ body.instructions = &f0F35->else_instructions;
+
+ ir_variable *const r0F39 = body.make_temp(glsl_type::uint_type, "assignment_tmp");
+ ir_expression *const r0F3A = add(r0F21, body.constant(int(-20)));
+ body.emit(assign(r0F39, rshift(body.constant(4294967295u), r0F3A), 0x01));
+
+ /* IF CONDITION */
+ ir_expression *const r0F3C = bit_and(r0F1F, r0F39);
+ ir_expression *const r0F3D = equal(r0F3C, body.constant(0u));
+ ir_if *f0F3B = new(mem_ctx) ir_if(operand(r0F3D).val);
+ exec_list *const f0F3B_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F3B->then_instructions;
+
+ body.emit(assign(r0F1E, r0F1C, 0x03));
+
+ body.emit(assign(r0F1D, body.constant(false), 0x01));
+
+
+ /* ELSE INSTRUCTIONS */
+ body.instructions = &f0F3B->else_instructions;
+
+ ir_variable *const r0F3E = body.make_temp(glsl_type::uint_type, "assignment_tmp");
+ ir_expression *const r0F3F = sub(body.constant(int(51)), r0F21);
+ ir_expression *const r0F40 = lshift(body.constant(1u), r0F3F);
+ body.emit(assign(r0F3E, add(r0F1F, r0F40), 0x01));
+
+ /* IF CONDITION */
+ ir_expression *const r0F42 = less(r0F3E, r0F1F);
+ ir_if *f0F41 = new(mem_ctx) ir_if(operand(r0F42).val);
+ exec_list *const f0F41_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F41->then_instructions;
+
+ body.emit(assign(r0F20, add(r0F20, body.constant(1u)), 0x01));
+
+
+ body.instructions = f0F41_parent_instructions;
+ body.emit(f0F41);
+
+ /* END IF */
+
+ ir_expression *const r0F43 = expr(ir_unop_bit_not, r0F39);
+ body.emit(assign(r0F1F, bit_and(r0F3E, r0F43), 0x01));
+
+
+ body.instructions = f0F3B_parent_instructions;
+ body.emit(f0F3B);
+
+ /* END IF */
+
+
+ body.instructions = f0F35_parent_instructions;
+ body.emit(f0F35);
+
+ /* END IF */
+
+
+ body.instructions = f0F25_parent_instructions;
+ body.emit(f0F25);
+
+ /* END IF */
+
+ /* IF CONDITION */
+ ir_if *f0F44 = new(mem_ctx) ir_if(operand(r0F1D).val);
+ exec_list *const f0F44_parent_instructions = body.instructions;
+
+ /* THEN INSTRUCTIONS */
+ body.instructions = &f0F44->then_instructions;
+
+ body.emit(assign(r0F1C, r0F1F, 0x01));
+
+ body.emit(assign(r0F1C, r0F20, 0x02));
+
+ body.emit(assign(r0F1E, r0F1C, 0x03));
+
+ body.emit(assign(r0F1D, body.constant(false), 0x01));
+
+
+ body.instructions = f0F44_parent_instructions;
+ body.emit(f0F44);
+
+ /* END IF */
+
+ body.emit(ret(r0F1E));
+
+ sig->replace_parameters(&sig_parameters);
+ return sig;
+}
diff --git a/src/compiler/glsl/builtin_functions.cpp b/src/compiler/glsl/builtin_functions.cpp
index ca59bf9a0c..b6a71f2681 100644
--- a/src/compiler/glsl/builtin_functions.cpp
+++ b/src/compiler/glsl/builtin_functions.cpp
@@ -3388,6 +3388,10 @@ builtin_builder::create_builtins()
generate_ir::ftrunc64(mem_ctx, integer_functions_supported),
NULL);
+ add_function("__builtin_fround64",
+ generate_ir::fround64(mem_ctx, integer_functions_supported),
+ NULL);
+
#undef F
#undef FI
#undef FIUD_VEC
diff --git a/src/compiler/glsl/builtin_functions.h b/src/compiler/glsl/builtin_functions.h
index b98a34ca3e..ca2634c747 100644
--- a/src/compiler/glsl/builtin_functions.h
+++ b/src/compiler/glsl/builtin_functions.h
@@ -115,6 +115,9 @@ fsqrt64(void *mem_ctx, builtin_available_predicate avail);
ir_function_signature *
ftrunc64(void *mem_ctx, builtin_available_predicate avail);
+ir_function_signature *
+fround64(void *mem_ctx, builtin_available_predicate avail);
+
}
#endif /* BULITIN_FUNCTIONS_H */
diff --git a/src/compiler/glsl/float64.glsl b/src/compiler/glsl/float64.glsl
index 54b0275fbb..433923272c 100644
--- a/src/compiler/glsl/float64.glsl
+++ b/src/compiler/glsl/float64.glsl
@@ -1441,3 +1441,44 @@ ftrunc64(uvec2 a)
return uvec2(zLo, zHi);
}
}
+
+uvec2
+fround64(uvec2 a)
+{
+ int unbiasedExp = extractFloat64Exp(a) - 1023;
+ uint aHi = a.y;
+ uint aLo = a.x;
+
+ if (unbiasedExp < 20) {
+ if (unbiasedExp < 0) {
+ aHi &= 0x80000000u;
+ if (unbiasedExp == -1 && aLo != 0u)
+ aHi |= (1023u << 20);
+ aLo = 0u;
+ } else {
+ uint maskExp = 0x000FFFFFu >> unbiasedExp;
+ /* a is an integral value */
+ if (((aHi & maskExp) == 0u) && (aLo == 0u))
+ return a;
+
+ aHi += 0x00080000u >> unbiasedExp;
+ aHi &= ~maskExp;
+ aLo = 0u;
+ }
+ } else if (unbiasedExp > 51 || unbiasedExp == 1024) {
+ return a;
+ } else {
+ uint maskExp = 0xFFFFFFFFu >> (unbiasedExp - 20);
+ if ((aLo & maskExp) == 0u)
+ return a;
+ uint tmp = aLo + (1u << (51 - unbiasedExp));
+ if(tmp < aLo)
+ aHi += 1u;
+ aLo = tmp;
+ aLo &= ~maskExp;
+ }
+
+ a.x = aLo;
+ a.y = aHi;
+ return a;
+}
diff --git a/src/compiler/glsl/glcpp/glcpp-parse.y b/src/compiler/glsl/glcpp/glcpp-parse.y
index c7e6464c5a..8b0b6bb1ab 100644
--- a/src/compiler/glsl/glcpp/glcpp-parse.y
+++ b/src/compiler/glsl/glcpp/glcpp-parse.y
@@ -2465,6 +2465,7 @@ _glcpp_parser_handle_version_declaration(glcpp_parser_t *parser, intmax_t versio
add_builtin_define(parser, "__have_builtin_builtin_fp32_to_fp64", 1);
add_builtin_define(parser, "__have_builtin_builtin_fsqrt64", 1);
add_builtin_define(parser, "__have_builtin_builtin_ftrunc64", 1);
+ add_builtin_define(parser, "__have_builtin_builtin_fround64", 1);
}
}
--
2.14.1
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