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i965/vec4_vs: Add an explicit use_legacy_snorm_formula flag

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This way we can stop doing is_gles3 checks inside of the compiler.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
This commit is contained in:
Jason Ekstrand 2015-06-22 17:30:23 -07:00
parent 924b15d7de
commit bcaf4a3f07
3 changed files with 12 additions and 6 deletions
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4
src/mesa/drivers/dri/i965/brw_vec4.cpp
View file

@ -35,6 +35,7 @@ extern "C" {
#include "program/prog_print.h"
#include "program/prog_parameter.h"
}
#include "main/context.h"
#define MAX_INSTRUCTION (1 << 30)
@ -1938,7 +1939,8 @@ brw_vs_emit(struct brw_context *brw,
if (!assembly) {
prog_data->base.dispatch_mode = DISPATCH_MODE_4X2_DUAL_OBJECT;
vec4_vs_visitor v(brw, c, prog_data, prog, mem_ctx, st_index);
vec4_vs_visitor v(brw, c, prog_data, prog, mem_ctx, st_index,
!_mesa_is_gles3(&brw->ctx));
if (!v.run(brw_select_clip_planes(&brw->ctx))) {
if (prog) {
prog->LinkStatus = false;

9
src/mesa/drivers/dri/i965/brw_vec4_vs_visitor.cpp
View file

@ -23,7 +23,6 @@
#include "brw_vs.h"
#include "main/context.h"
namespace brw {
@ -78,7 +77,7 @@ vec4_vs_visitor::emit_prolog()
/* ES 3.0 has different rules for converting signed normalized
* fixed-point numbers than desktop GL.
*/
if (_mesa_is_gles3(ctx) && (wa_flags & BRW_ATTRIB_WA_SIGN)) {
if ((wa_flags & BRW_ATTRIB_WA_SIGN) && !use_legacy_snorm_formula) {
/* According to equation 2.2 of the ES 3.0 specification,
* signed normalization conversion is done by:
*
@ -217,14 +216,16 @@ vec4_vs_visitor::vec4_vs_visitor(struct brw_context *brw,
struct brw_vs_prog_data *vs_prog_data,
struct gl_shader_program *prog,
void *mem_ctx,
int shader_time_index)
int shader_time_index,
bool use_legacy_snorm_formula)
: vec4_visitor(brw, &vs_compile->base, &vs_compile->vp->program.Base,
&vs_compile->key.base, &vs_prog_data->base, prog,
MESA_SHADER_VERTEX,
mem_ctx, false /* no_spills */,
shader_time_index),
vs_compile(vs_compile),
vs_prog_data(vs_prog_data)
vs_prog_data(vs_prog_data),
use_legacy_snorm_formula(use_legacy_snorm_formula)
{
}

5
src/mesa/drivers/dri/i965/brw_vs.h
View file

@ -95,7 +95,8 @@ public:
struct brw_vs_prog_data *vs_prog_data,
struct gl_shader_program *prog,
void *mem_ctx,
int shader_time_index);
int shader_time_index,
bool use_legacy_snorm_formula);
protected:
virtual dst_reg *make_reg_for_system_value(ir_variable *ir);
@ -116,6 +117,8 @@ private:
struct brw_vs_prog_data * const vs_prog_data;
src_reg *vp_temp_regs;
src_reg vp_addr_reg;
bool use_legacy_snorm_formula;
};
} /* namespace brw */