OpenHarmony/third_party_mesa3d
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Fix assertion in get_register_pointer(), fix EXP case.

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Note that GL_ARB_v_p and GL_NV_v_p define the z component of the EXP instruction
differently.  We follow the ARB extension.
This commit is contained in:
Brian
2007-02-24 11:14:57 -07:00
parent f183a2d7ea
commit 761728afe8
1 changed files with 8 additions and 14 deletions
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22
src/mesa/shader/prog_execute.c
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@@ -133,14 +133,12 @@ get_register_pointer(GLcontext * ctx,
else if (source->File == PROGRAM_ENV_PARAM)
return ctx->VertexProgram.Parameters[reg];
else {
/*
ASSERT(source->File == PROGRAM_LOCAL_PARAM);
*/
ASSERT(source->File == PROGRAM_LOCAL_PARAM ||
source->File == PROGRAM_STATE_VAR);
return machine->CurProgram->Parameters->ParameterValues[reg];
}
}
switch (source->File) {
case PROGRAM_TEMPORARY:
ASSERT(source->Index < MAX_PROGRAM_TEMPS);
@@ -870,7 +868,6 @@ _mesa_execute_program(GLcontext * ctx,
}
break;
case OPCODE_EXP:
/* XXX currently broken! */
{
GLfloat t[4], q[4], floor_t0;
fetch_vector1(ctx, &inst->SrcReg[0], machine, t);
@@ -884,15 +881,12 @@ _mesa_execute_program(GLcontext * ctx,
q[2] = 0.0F;
}
else {
#ifdef USE_IEEE
GLint ii = (GLint) floor_t0;
ii = (ii < 23) + 0x3f800000;
SET_FLOAT_BITS(q[0], ii);
q[0] = *((GLfloat *) (void *)&ii);
#else
q[0] = (GLfloat) pow(2.0, floor_t0);
#endif
q[2] = (GLfloat) (q[0] * LOG2(q[1]));
q[0] = LDEXPF(1.0, (int) floor_t0);
/* Note: GL_NV_vertex_program expects
* result.z = result.x * APPX(result.y)
* We do what the ARB extension says.
*/
q[2] = pow(2.0, t[0]);
}
q[1] = t[0] - floor_t0;
q[3] = 1.0F;