#include "tgsi/tgsi_ureg.h"
#include "st_mesa_to_tgsi.h"
#include "st_context.h"
-#include "shader/prog_instruction.h"
-#include "shader/prog_parameter.h"
+#include "program/prog_instruction.h"
+#include "program/prog_parameter.h"
#include "util/u_debug.h"
#include "util/u_math.h"
#include "util/u_memory.h"
+
+#define PROGRAM_ANY_CONST ((1 << PROGRAM_LOCAL_PARAM) | \
+ (1 << PROGRAM_ENV_PARAM) | \
+ (1 << PROGRAM_STATE_VAR) | \
+ (1 << PROGRAM_NAMED_PARAM) | \
+ (1 << PROGRAM_CONSTANT) | \
+ (1 << PROGRAM_UNIFORM))
+
+
struct label {
unsigned branch_target;
unsigned token;
struct ureg_src inputs[PIPE_MAX_SHADER_INPUTS];
struct ureg_dst address[1];
struct ureg_src samplers[PIPE_MAX_SAMPLERS];
- struct ureg_dst psizregreal;
- struct ureg_src pointSizeConst;
- GLint psizoutindex;
- GLboolean prevInstWrotePsiz;
+
+ /* Extra info for handling point size clamping in vertex shader */
+ struct ureg_dst pointSizeResult; /**< Actual point size output register */
+ struct ureg_src pointSizeConst; /**< Point size range constant register */
+ GLint pointSizeOutIndex; /**< Temp point size output register */
+ GLboolean prevInstWrotePointSize;
const GLuint *inputMapping;
const GLuint *outputMapping;
};
+/**
+ * Make note of a branch to a label in the TGSI code.
+ * After we've emitted all instructions, we'll go over the list
+ * of labels built here and patch the TGSI code with the actual
+ * location of each label.
+ */
static unsigned *get_label( struct st_translate *t,
unsigned branch_target )
{
}
+/**
+ * Called prior to emitting the TGSI code for each Mesa instruction.
+ * Allocate additional space for instructions if needed.
+ * Update the insn[] array so the next Mesa instruction points to
+ * the next TGSI instruction.
+ */
static void set_insn_start( struct st_translate *t,
unsigned start )
{
}
-/*
- * Map mesa register file to TGSI register file.
+/**
+ * Map a Mesa dst register to a TGSI ureg_dst register.
*/
static struct ureg_dst
dst_register( struct st_translate *t,
return t->temps[index];
case PROGRAM_OUTPUT:
- if (index == t->psizoutindex)
- t->prevInstWrotePsiz = GL_TRUE;
+ if (t->procType == TGSI_PROCESSOR_VERTEX && index == VERT_RESULT_PSIZ)
+ t->prevInstWrotePointSize = GL_TRUE;
+
+ if (t->procType == TGSI_PROCESSOR_VERTEX)
+ assert(index < VERT_RESULT_MAX);
+ else if (t->procType == TGSI_PROCESSOR_FRAGMENT)
+ assert(index < FRAG_RESULT_MAX);
+ else
+ assert(index < GEOM_RESULT_MAX);
+
+ assert(t->outputMapping[index] < Elements(t->outputs));
+
return t->outputs[t->outputMapping[index]];
case PROGRAM_ADDRESS:
}
+/**
+ * Map a Mesa src register to a TGSI ureg_src register.
+ */
static struct ureg_src
src_register( struct st_translate *t,
gl_register_file file,
return ureg_src_undef();
case PROGRAM_TEMPORARY:
- ASSERT(index >= 0);
+ assert(index >= 0);
if (ureg_dst_is_undef(t->temps[index]))
t->temps[index] = ureg_DECL_temporary( t->ureg );
assert(index < Elements(t->temps));
case PROGRAM_ENV_PARAM:
case PROGRAM_LOCAL_PARAM:
case PROGRAM_UNIFORM:
- ASSERT(index >= 0);
+ assert(index >= 0);
return t->constants[index];
case PROGRAM_STATE_VAR:
case PROGRAM_CONSTANT: /* ie, immediate */
}
+/**
+ * Create a TGSI ureg_dst register from a Mesa dest register.
+ */
static struct ureg_dst
translate_dst( struct st_translate *t,
const struct prog_dst_register *DstReg,
}
+/**
+ * Create a TGSI ureg_src register from a Mesa src register.
+ */
static struct ureg_src
translate_src( struct st_translate *t,
const struct prog_src_register *SrcReg )
{
struct ureg_src src = src_register( t, SrcReg->File, SrcReg->Index );
+ if (t->procType == TGSI_PROCESSOR_GEOMETRY && SrcReg->HasIndex2) {
+ src = src_register( t, SrcReg->File, SrcReg->Index2 );
+ if (SrcReg->RelAddr2)
+ src = ureg_src_dimension_indirect( src, ureg_src(t->address[0]),
+ SrcReg->Index);
+ else
+ src = ureg_src_dimension( src, SrcReg->Index);
+ }
+
src = ureg_swizzle( src,
GET_SWZ( SrcReg->Swizzle, 0 ) & 0x3,
GET_SWZ( SrcReg->Swizzle, 1 ) & 0x3,
if (SrcReg->RelAddr) {
src = ureg_src_indirect( src, ureg_src(t->address[0]));
- /* If SrcReg->Index was negative, it was set to zero in
- * src_register(). Reassign it now.
- */
- src.Index = SrcReg->Index;
+ if (SrcReg->File != PROGRAM_INPUT &&
+ SrcReg->File != PROGRAM_OUTPUT) {
+ /* If SrcReg->Index was negative, it was set to zero in
+ * src_register(). Reassign it now. But don't do this
+ * for input/output regs since they get remapped while
+ * const buffers don't.
+ */
+ src.Index = SrcReg->Index;
+ }
}
return src;
return TGSI_OPCODE_DST;
case OPCODE_ELSE:
return TGSI_OPCODE_ELSE;
+ case OPCODE_EMIT_VERTEX:
+ return TGSI_OPCODE_EMIT;
+ case OPCODE_END_PRIMITIVE:
+ return TGSI_OPCODE_ENDPRIM;
case OPCODE_ENDIF:
return TGSI_OPCODE_ENDIF;
case OPCODE_ENDLOOP:
}
}
+
/**
* Emit the TGSI instructions to adjust the WPOS pixel center convention
*/
struct ureg_dst wpos_temp = ureg_DECL_temporary(ureg);
struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]];
- ureg_ADD(ureg, ureg_writemask(wpos_temp, TGSI_WRITEMASK_X | TGSI_WRITEMASK_Y),
- wpos_input, ureg_imm1f(ureg, value));
+ /* Note that we bias X and Y and pass Z and W through unchanged.
+ * The shader might also use gl_FragCoord.w and .z.
+ */
+ ureg_ADD(ureg, wpos_temp, wpos_input,
+ ureg_imm4f(ureg, value, value, 0.0f, 0.0f));
t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp);
}
+
/**
* Emit the TGSI instructions for inverting the WPOS y coordinate.
*/
unsigned i;
enum pipe_error ret = PIPE_OK;
+ assert(numInputs <= Elements(t->inputs));
+ assert(numOutputs <= Elements(t->outputs));
+
t = &translate;
memset(t, 0, sizeof *t);
t->inputMapping = inputMapping;
t->outputMapping = outputMapping;
t->ureg = ureg;
- t->psizoutindex = -1;
- t->prevInstWrotePsiz = GL_FALSE;
+ t->pointSizeOutIndex = -1;
+ t->prevInstWrotePointSize = GL_FALSE;
/*_mesa_print_program(program);*/
}
}
}
+ else if (procType == TGSI_PROCESSOR_GEOMETRY) {
+ for (i = 0; i < numInputs; i++) {
+ t->inputs[i] = ureg_DECL_gs_input(ureg,
+ i,
+ inputSemanticName[i],
+ inputSemanticIndex[i]);
+ }
+
+ for (i = 0; i < numOutputs; i++) {
+ t->outputs[i] = ureg_DECL_output( ureg,
+ outputSemanticName[i],
+ outputSemanticIndex[i] );
+ }
+ }
else {
+ assert(procType == TGSI_PROCESSOR_VERTEX);
+
for (i = 0; i < numInputs; i++) {
t->inputs[i] = ureg_DECL_vs_input(ureg, i);
}
outputSemanticName[i],
outputSemanticIndex[i] );
if ((outputSemanticName[i] == TGSI_SEMANTIC_PSIZE) && program->Id) {
+ /* Writing to the point size result register requires special
+ * handling to implement clamping.
+ */
static const gl_state_index pointSizeClampState[STATE_LENGTH]
= { STATE_INTERNAL, STATE_POINT_SIZE_IMPL_CLAMP, 0, 0, 0 };
/* XXX: note we are modifying the incoming shader here! Need to
pointSizeClampState);
struct ureg_dst psizregtemp = ureg_DECL_temporary( ureg );
t->pointSizeConst = ureg_DECL_constant( ureg, pointSizeClampConst );
- t->psizregreal = t->outputs[i];
- t->psizoutindex = i;
+ t->pointSizeResult = t->outputs[i];
+ t->pointSizeOutIndex = i;
t->outputs[i] = psizregtemp;
}
}
t->address[0] = ureg_DECL_address( ureg );
}
+ if (program->IndirectRegisterFiles & (1 << PROGRAM_TEMPORARY)) {
+ /* If temps are accessed with indirect addressing, declare temporaries
+ * in sequential order. Else, we declare them on demand elsewhere.
+ */
+ for (i = 0; i < program->NumTemporaries; i++) {
+ /* XXX use TGSI_FILE_TEMPORARY_ARRAY when it's supported by ureg */
+ t->temps[i] = ureg_DECL_temporary( t->ureg );
+ }
+ }
+
/* Emit constants and immediates. Mesa uses a single index space
* for these, so we put all the translated regs in t->constants.
*/
ret = PIPE_ERROR_OUT_OF_MEMORY;
goto out;
}
-
+
for (i = 0; i < program->Parameters->NumParameters; i++) {
switch (program->Parameters->Parameters[i].Type) {
case PROGRAM_ENV_PARAM:
t->constants[i] = ureg_DECL_constant( ureg, i );
break;
- /* Emit immediates only when there is no address register
- * in use. FIXME: Be smarter and recognize param arrays:
+ /* Emit immediates only when there's no indirect addressing of
+ * the const buffer.
+ * FIXME: Be smarter and recognize param arrays:
* indirect addressing is only valid within the referenced
* array.
*/
case PROGRAM_CONSTANT:
- if (program->NumAddressRegs > 0)
+ if (program->IndirectRegisterFiles & PROGRAM_ANY_CONST)
t->constants[i] = ureg_DECL_constant( ureg, i );
else
t->constants[i] =
set_insn_start( t, ureg_get_instruction_number( ureg ));
compile_instruction( t, &program->Instructions[i] );
- /* note can't do that easily at the end of prog due to
- possible early return */
- if (t->prevInstWrotePsiz && program->Id) {
+ if (t->prevInstWrotePointSize && program->Id) {
+ /* The previous instruction wrote to the (fake) vertex point size
+ * result register. Now we need to clamp that value to the min/max
+ * point size range, putting the result into the real point size
+ * register.
+ * Note that we can't do this easily at the end of program due to
+ * possible early return.
+ */
set_insn_start( t, ureg_get_instruction_number( ureg ));
ureg_MAX( t->ureg,
- ureg_writemask(t->outputs[t->psizoutindex], WRITEMASK_X),
- ureg_src(t->outputs[t->psizoutindex]),
+ ureg_writemask(t->outputs[t->pointSizeOutIndex], WRITEMASK_X),
+ ureg_src(t->outputs[t->pointSizeOutIndex]),
ureg_swizzle(t->pointSizeConst, 1,1,1,1));
- ureg_MIN( t->ureg, ureg_writemask(t->psizregreal, WRITEMASK_X),
- ureg_src(t->outputs[t->psizoutindex]),
+ ureg_MIN( t->ureg, ureg_writemask(t->pointSizeResult, WRITEMASK_X),
+ ureg_src(t->outputs[t->pointSizeOutIndex]),
ureg_swizzle(t->pointSizeConst, 2,2,2,2));
}
- t->prevInstWrotePsiz = GL_FALSE;
+ t->prevInstWrotePointSize = GL_FALSE;
}
/* Fix up all emitted labels:
projects / mesa.git / blobdiff