OpenHarmony/third_party_mesa3d
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Add runtime compiled x87 implementations for most of the remaining

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opcodes.  When enabled via environment vars, gears runs and almost
looks right but other apps are still quite buggy.
This commit is contained in:
Keith Whitwell
2005-07-10 11:23:10 +00:00
parent 0cfbd849ec
commit 9311bc253e
3 changed files with 596 additions and 229 deletions
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53
src/mesa/tnl/t_vb_arbprogram.c
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@@ -110,6 +110,10 @@ static GLfloat ApproxPower(GLfloat x, GLfloat y)
return (GLfloat) _mesa_pow(x, y);
}
static GLfloat rough_approx_log2_0_1(GLfloat x)
{
return LOG2(x);
}
@@ -273,13 +277,11 @@ static void do_EXP( struct arb_vp_machine *m, union instruction op )
const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0];
GLfloat tmp = arg0[0];
GLfloat flr_tmp = FLOORF(tmp);
GLfloat frac_tmp = tmp - flr_tmp;
/* KW: nvvertexec has an optimized version of this which is pretty
* hard to understand/validate, but avoids the RoughApproxExp2.
*/
result[0] = (GLfloat) (1 << (int)flr_tmp);
result[1] = tmp - flr_tmp;
result[2] = RoughApproxExp2(tmp);
result[0] = ldexpf(1.0, (int)flr_tmp);
result[1] = frac_tmp;
result[2] = ldexpf(rough_approx_log2_0_1(frac_tmp), (int)flr_tmp);
result[3] = 1.0F;
}
@@ -322,18 +324,22 @@ static void do_LIT( struct arb_vp_machine *m, union instruction op )
{
GLfloat *result = m->File[0][op.alu.dst];
const GLfloat *arg0 = m->File[op.alu.file0][op.alu.idx0];
const GLfloat epsilon = 1.0F / 256.0F; /* per NV spec */
GLfloat tmp[4];
tmp[0] = MAX2(arg0[0], 0.0F);
tmp[1] = MAX2(arg0[1], 0.0F);
tmp[3] = CLAMP(arg0[3], -(128.0F - epsilon), (128.0F - epsilon));
tmp[0] = 1.0;
tmp[1] = 0.0;
tmp[2] = 0.0;
tmp[3] = 1.0;
result[0] = 1.0;
result[1] = tmp[0];
result[2] = (tmp[0] > 0.0) ? RoughApproxPower(tmp[1], tmp[3]) : 0.0F;
result[3] = 1.0;
if (arg0[0] > 0.0) {
tmp[1] = arg0[0];
if (arg0[1] > 0.0) {
tmp[2] = RoughApproxPower(arg0[1], arg0[3]);
}
}
COPY_4V(result, tmp);
}
@@ -353,7 +359,7 @@ static void do_LOG( struct arb_vp_machine *m, union instruction op )
result[0] = (GLfloat) (exponent - 1);
result[1] = 2.0 * mantissa; /* map [.5, 1) -> [1, 2) */
result[2] = result[0] + LOG2(result[1]);
result[2] = exponent + LOG2(mantissa);
result[3] = 1.0;
}
@@ -1201,9 +1207,6 @@ run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
p = (struct tnl_compiled_program *)program->TnlData;
assert(p);
/* Initialize regs where necessary:
*/
ASSIGN_4V(m->File[0][REG_ID], 0, 0, 0, 1);
m->nr_inputs = m->nr_outputs = 0;
@@ -1386,6 +1389,15 @@ static GLboolean init_vertex_program( GLcontext *ctx,
m->File[0] = ALIGN_MALLOC(REG_MAX * sizeof(GLfloat) * 4, 16);
/* Initialize regs where necessary:
*/
ASSIGN_4V(m->File[0][REG_ID], 0, 0, 0, 1);
ASSIGN_4V(m->File[0][REG_ONES], 1, 1, 1, 1);
ASSIGN_4V(m->File[0][REG_SWZ], -1, 1, 0, 0);
ASSIGN_4V(m->File[0][REG_NEG], -1, -1, -1, -1);
ASSIGN_4V(m->File[0][REG_LIT], 1, 0, 0, 1);
ASSIGN_4V(m->File[0][REG_LIT2], 1, .5, .2, 1); /* debug value */
if (_mesa_getenv("MESA_EXPERIMENTAL"))
m->try_codegen = 1;
@@ -1402,6 +1414,9 @@ static GLboolean init_vertex_program( GLcontext *ctx,
if (ctx->_MaintainTnlProgram)
_mesa_allow_light_in_model( ctx, GL_FALSE );
m->fpucntl_rnd_neg = RND_NEG_FPU; /* const value */
m->fpucntl_restore = RESTORE_FPU; /* const value */
return GL_TRUE;
}