diff options
Diffstat (limited to 'src/mesa/shader/prog_execute.c')
| -rw-r--r-- | src/mesa/shader/prog_execute.c | 50 |
1 files changed, 42 insertions, 8 deletions
diff --git a/src/mesa/shader/prog_execute.c b/src/mesa/shader/prog_execute.c index fb29768935f..c212790dcd9 100644 --- a/src/mesa/shader/prog_execute.c +++ b/src/mesa/shader/prog_execute.c @@ -53,8 +53,18 @@ * Set x to positive or negative infinity. */ #if defined(USE_IEEE) || defined(_WIN32) -#define SET_POS_INFINITY(x) ( *((GLuint *) (void *)&x) = 0x7F800000 ) -#define SET_NEG_INFINITY(x) ( *((GLuint *) (void *)&x) = 0xFF800000 ) +#define SET_POS_INFINITY(x) \ + do { \ + fi_type fi; \ + fi.i = 0x7F800000; \ + x = fi.f; \ + } while (0) +#define SET_NEG_INFINITY(x) \ + do { \ + fi_type fi; \ + fi.i = 0xFF800000; \ + x = fi.f; \ + } while (0) #elif defined(VMS) #define SET_POS_INFINITY(x) x = __MAXFLOAT #define SET_NEG_INFINITY(x) x = -__MAXFLOAT @@ -695,9 +705,13 @@ _mesa_execute_program(GLcontext * ctx, break; case OPCODE_BGNLOOP: /* no-op */ + ASSERT(program->Instructions[inst->BranchTarget].Opcode + == OPCODE_ENDLOOP); break; case OPCODE_ENDLOOP: /* subtract 1 here since pc is incremented by for(pc) loop */ + ASSERT(program->Instructions[inst->BranchTarget].Opcode + == OPCODE_BGNLOOP); pc = inst->BranchTarget - 1; /* go to matching BNGLOOP */ break; case OPCODE_BGNSUB: /* begin subroutine */ @@ -705,12 +719,26 @@ _mesa_execute_program(GLcontext * ctx, case OPCODE_ENDSUB: /* end subroutine */ break; case OPCODE_BRA: /* branch (conditional) */ - /* fall-through */ + if (eval_condition(machine, inst)) { + /* take branch */ + /* Subtract 1 here since we'll do pc++ below */ + pc = inst->BranchTarget - 1; + } + break; case OPCODE_BRK: /* break out of loop (conditional) */ - /* fall-through */ + ASSERT(program->Instructions[inst->BranchTarget].Opcode + == OPCODE_ENDLOOP); + if (eval_condition(machine, inst)) { + /* break out of loop */ + /* pc++ at end of for-loop will put us after the ENDLOOP inst */ + pc = inst->BranchTarget; + } + break; case OPCODE_CONT: /* continue loop (conditional) */ + ASSERT(program->Instructions[inst->BranchTarget].Opcode + == OPCODE_ENDLOOP); if (eval_condition(machine, inst)) { - /* take branch */ + /* continue at ENDLOOP */ /* Subtract 1 here since we'll do pc++ at end of for-loop */ pc = inst->BranchTarget - 1; } @@ -903,6 +931,10 @@ _mesa_execute_program(GLcontext * ctx, case OPCODE_IF: { GLboolean cond; + ASSERT(program->Instructions[inst->BranchTarget].Opcode + == OPCODE_ELSE || + program->Instructions[inst->BranchTarget].Opcode + == OPCODE_ENDIF); /* eval condition */ if (inst->SrcReg[0].File != PROGRAM_UNDEFINED) { GLfloat a[4]; @@ -922,14 +954,16 @@ _mesa_execute_program(GLcontext * ctx, else { /* go to the instruction after ELSE or ENDIF */ assert(inst->BranchTarget >= 0); - pc = inst->BranchTarget - 1; + pc = inst->BranchTarget; } } break; case OPCODE_ELSE: /* goto ENDIF */ + ASSERT(program->Instructions[inst->BranchTarget].Opcode + == OPCODE_ENDIF); assert(inst->BranchTarget >= 0); - pc = inst->BranchTarget - 1; + pc = inst->BranchTarget; break; case OPCODE_ENDIF: /* nothing */ @@ -1657,7 +1691,7 @@ _mesa_execute_program(GLcontext * ctx, { const GLuint raw = fetch_vector1ui(&inst->SrcReg[0], machine); GLfloat result[4]; - GLhalfNV hx, hy; + GLushort hx, hy; hx = raw & 0xffff; hy = raw >> 16; result[0] = result[2] = _mesa_half_to_float(hx); |