#include "tgsi/tgsi_parse.h"
#include "util/u_memory.h"
#include "util/u_math.h"
+#include "util/u_pstipple.h"
#include "svga_tgsi_emit.h"
#include "svga_context.h"
static boolean emit_ps_postamble( struct svga_shader_emitter *emit );
-static unsigned
-translate_opcode(uint opcode)
+static SVGA3dShaderOpCodeType
+translate_opcode(enum tgsi_opcode opcode)
{
switch (opcode) {
- case TGSI_OPCODE_ABS: return SVGA3DOP_ABS;
case TGSI_OPCODE_ADD: return SVGA3DOP_ADD;
- case TGSI_OPCODE_DP2A: return SVGA3DOP_DP2ADD;
case TGSI_OPCODE_DP3: return SVGA3DOP_DP3;
case TGSI_OPCODE_DP4: return SVGA3DOP_DP4;
case TGSI_OPCODE_FRC: return SVGA3DOP_FRC;
case TGSI_OPCODE_MOV: return SVGA3DOP_MOV;
case TGSI_OPCODE_MUL: return SVGA3DOP_MUL;
case TGSI_OPCODE_NOP: return SVGA3DOP_NOP;
- case TGSI_OPCODE_NRM4: return SVGA3DOP_NRM;
default:
- debug_printf("Unkown opcode %u\n", opcode);
- assert( 0 );
+ assert(!"svga: unexpected opcode in translate_opcode()");
return SVGA3DOP_LAST_INST;
}
}
-static unsigned
-translate_file(unsigned file)
+static SVGA3dShaderRegType
+translate_file(enum tgsi_file_type file)
{
switch (file) {
case TGSI_FILE_TEMPORARY: return SVGA3DREG_TEMP;
case TGSI_FILE_SAMPLER: return SVGA3DREG_SAMPLER;
case TGSI_FILE_ADDRESS: return SVGA3DREG_ADDR;
default:
- assert( 0 );
+ assert(!"svga: unexpected register file in translate_file()");
return SVGA3DREG_TEMP;
}
}
+/**
+ * Translate a TGSI destination register to an SVGA3DShaderDestToken.
+ * \param insn the TGSI instruction
+ * \param idx which TGSI dest register to translate (usually (always?) zero)
+ */
static SVGA3dShaderDestToken
translate_dst_register( struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn,
* Need to lookup a table built at decl time:
*/
dest = emit->output_map[reg->Register.Index];
+ emit->num_output_writes++;
break;
default:
break;
}
+ if (reg->Register.Indirect) {
+ debug_warning("Indirect indexing of dest registers is not supported!\n");
+ }
+
dest.mask = reg->Register.WriteMask;
assert(dest.mask);
static boolean
svga_arl_needs_adjustment( const struct svga_shader_emitter *emit )
{
- int i;
+ unsigned i;
for (i = 0; i < emit->num_arl_consts; ++i) {
if (emit->arl_consts[i].arl_num == emit->current_arl)
static int
svga_arl_adjustment( const struct svga_shader_emitter *emit )
{
- int i;
+ unsigned i;
for (i = 0; i < emit->num_arl_consts; ++i) {
if (emit->arl_consts[i].arl_num == emit->current_arl)
}
+/**
+ * Translate a TGSI src register to a src_register.
+ */
static struct src_register
translate_src_register( const struct svga_shader_emitter *emit,
const struct tgsi_full_src_register *reg )
get_temp( struct svga_shader_emitter *emit )
{
int i = emit->nr_hw_temp + emit->internal_temp_count++;
- assert(i < SVGA3D_TEMPREG_MAX);
- i = MIN2(i, SVGA3D_TEMPREG_MAX - 1);
+ if (i >= SVGA3D_TEMPREG_MAX) {
+ debug_warn_once("svga: Too many temporary registers used in shader\n");
+ i = SVGA3D_TEMPREG_MAX - 1;
+ }
return dst_register( SVGA3DREG_TEMP, i );
}
}
+/**
+ * Release all temps.
+ */
static void
reset_temp_regs(struct svga_shader_emitter *emit)
{
}
+/**
+ * Submit/emit an instruction with zero operands.
+ */
static boolean
submit_op0(struct svga_shader_emitter *emit,
SVGA3dShaderInstToken inst,
}
+/**
+ * Submit/emit an instruction with one operand.
+ */
static boolean
submit_op1(struct svga_shader_emitter *emit,
SVGA3dShaderInstToken inst,
/**
+ * Submit/emit an instruction with two operands.
+ *
* SVGA shaders may not refer to >1 constant register in a single
* instruction. This function checks for that usage and inserts a
* move to temporary if detected.
/**
+ * Submit/emit an instruction with three operands.
+ *
* SVGA shaders may not refer to >1 constant register in a single
* instruction. This function checks for that usage and inserts a
* move to temporary if detected.
/**
+ * Submit/emit an instruction with four operands.
+ *
* SVGA shaders may not refer to >1 constant register in a single
* instruction. This function checks for that usage and inserts a
* move to temporary if detected.
* in one slot at least:
*/
assert(type1 == SVGA3DREG_SAMPLER);
+ (void) type1;
if (type0 == SVGA3DREG_CONST &&
((type3 == SVGA3DREG_CONST && src0.base.num != src3.base.num) ||
}
-static boolean
-submit_lrp(struct svga_shader_emitter *emit,
- SVGA3dShaderDestToken dst,
- struct src_register src0,
- struct src_register src1,
- struct src_register src2)
-{
- SVGA3dShaderDestToken tmp;
- boolean need_dst_tmp = FALSE;
-
- /* The dst reg must be a temporary, and not be the same as src0 or src2 */
- if (SVGA3dShaderGetRegType(dst.value) != SVGA3DREG_TEMP ||
- alias_src_dst(src0, dst) ||
- alias_src_dst(src2, dst))
- need_dst_tmp = TRUE;
-
- if (need_dst_tmp) {
- tmp = get_temp( emit );
- tmp.mask = dst.mask;
- }
- else {
- tmp = dst;
- }
-
- if (!submit_op3(emit, inst_token( SVGA3DOP_LRP ), tmp, src0, src1, src2))
- return FALSE;
-
- if (need_dst_tmp) {
- if (!submit_op1(emit, inst_token( SVGA3DOP_MOV ), dst, src( tmp )))
- return FALSE;
- }
-
- return TRUE;
-}
-
-
+/**
+ * Helper for emitting SVGA immediate values using the SVGA3DOP_DEF[I]
+ * instructions.
+ */
static boolean
emit_def_const(struct svga_shader_emitter *emit,
SVGA3dShaderConstType type,
}
if (!emit_instruction(emit, opcode) ||
- !svga_shader_emit_dwords( emit, def.values, Elements(def.values)))
+ !svga_shader_emit_dwords( emit, def.values, ARRAY_SIZE(def.values)))
return FALSE;
return TRUE;
}
-static boolean
-create_zero_immediate( struct svga_shader_emitter *emit )
-{
- unsigned idx = emit->nr_hw_float_const++;
-
- /* Emit the constant (0, 0.5, -1, 1) and use swizzling to generate
- * other useful vectors.
- */
- if (!emit_def_const( emit, SVGA3D_CONST_TYPE_FLOAT,
- idx, 0, 0.5, -1, 1 ))
- return FALSE;
-
- emit->zero_immediate_idx = idx;
- emit->created_zero_immediate = TRUE;
-
- return TRUE;
-}
-
-
static boolean
create_loop_const( struct svga_shader_emitter *emit )
{
/**
- * returns {0, 0, 0, 1} immediate
+ * Create/emit a "common" constant with values {0, 0.5, -1, 1}.
+ * We can swizzle this to produce other useful constants such as
+ * {0, 0, 0, 0}, {1, 1, 1, 1}, etc.
+ */
+static boolean
+create_common_immediate( struct svga_shader_emitter *emit )
+{
+ unsigned idx = emit->nr_hw_float_const++;
+
+ /* Emit the constant (0, 0.5, -1, 1) and use swizzling to generate
+ * other useful vectors.
+ */
+ if (!emit_def_const( emit, SVGA3D_CONST_TYPE_FLOAT,
+ idx, 0.0f, 0.5f, -1.0f, 1.0f ))
+ return FALSE;
+ emit->common_immediate_idx[0] = idx;
+ idx++;
+
+ /* Emit constant {2, 0, 0, 0} (only the 2 is used for now) */
+ if (emit->key.vs.adjust_attrib_range) {
+ if (!emit_def_const( emit, SVGA3D_CONST_TYPE_FLOAT,
+ idx, 2.0f, 0.0f, 0.0f, 0.0f ))
+ return FALSE;
+ emit->common_immediate_idx[1] = idx;
+ }
+ else {
+ emit->common_immediate_idx[1] = -1;
+ }
+
+ emit->created_common_immediate = TRUE;
+
+ return TRUE;
+}
+
+
+/**
+ * Return swizzle/position for the given value in the "common" immediate.
+ */
+static inline unsigned
+common_immediate_swizzle(float value)
+{
+ if (value == 0.0f)
+ return TGSI_SWIZZLE_X;
+ else if (value == 0.5f)
+ return TGSI_SWIZZLE_Y;
+ else if (value == -1.0f)
+ return TGSI_SWIZZLE_Z;
+ else if (value == 1.0f)
+ return TGSI_SWIZZLE_W;
+ else {
+ assert(!"illegal value in common_immediate_swizzle");
+ return TGSI_SWIZZLE_X;
+ }
+}
+
+
+/**
+ * Returns an immediate reg where all the terms are either 0, 1, 2 or 0.5
+ */
+static struct src_register
+get_immediate(struct svga_shader_emitter *emit,
+ float x, float y, float z, float w)
+{
+ unsigned sx = common_immediate_swizzle(x);
+ unsigned sy = common_immediate_swizzle(y);
+ unsigned sz = common_immediate_swizzle(z);
+ unsigned sw = common_immediate_swizzle(w);
+ assert(emit->created_common_immediate);
+ assert(emit->common_immediate_idx[0] >= 0);
+ return swizzle(src_register(SVGA3DREG_CONST, emit->common_immediate_idx[0]),
+ sx, sy, sz, sw);
+}
+
+
+/**
+ * returns {0, 0, 0, 0} immediate
*/
static struct src_register
get_zero_immediate( struct svga_shader_emitter *emit )
{
- assert(emit->created_zero_immediate);
- assert(emit->zero_immediate_idx >= 0);
+ assert(emit->created_common_immediate);
+ assert(emit->common_immediate_idx[0] >= 0);
return swizzle(src_register( SVGA3DREG_CONST,
- emit->zero_immediate_idx),
- 0, 0, 0, 3);
+ emit->common_immediate_idx[0]),
+ 0, 0, 0, 0);
}
/**
- * returns {1, 1, 1, -1} immediate
+ * returns {1, 1, 1, 1} immediate
*/
static struct src_register
-get_pos_neg_one_immediate( struct svga_shader_emitter *emit )
+get_one_immediate( struct svga_shader_emitter *emit )
{
- assert(emit->created_zero_immediate);
- assert(emit->zero_immediate_idx >= 0);
+ assert(emit->created_common_immediate);
+ assert(emit->common_immediate_idx[0] >= 0);
return swizzle(src_register( SVGA3DREG_CONST,
- emit->zero_immediate_idx),
- 3, 3, 3, 2);
+ emit->common_immediate_idx[0]),
+ 3, 3, 3, 3);
}
static struct src_register
get_half_immediate( struct svga_shader_emitter *emit )
{
- assert(emit->created_zero_immediate);
- assert(emit->zero_immediate_idx >= 0);
- return swizzle(src_register(SVGA3DREG_CONST, emit->zero_immediate_idx),
+ assert(emit->created_common_immediate);
+ assert(emit->common_immediate_idx[0] >= 0);
+ return swizzle(src_register(SVGA3DREG_CONST, emit->common_immediate_idx[0]),
1, 1, 1, 1);
}
+/**
+ * returns {2, 2, 2, 2} immediate
+ */
+static struct src_register
+get_two_immediate( struct svga_shader_emitter *emit )
+{
+ /* Note we use the second common immediate here */
+ assert(emit->created_common_immediate);
+ assert(emit->common_immediate_idx[1] >= 0);
+ return swizzle(src_register( SVGA3DREG_CONST,
+ emit->common_immediate_idx[1]),
+ 0, 0, 0, 0);
+}
+
+
/**
* returns the loop const
*/
/**
- * Return the register which holds the current dimenions of the
- * texture bound to the given sampler
+ * Return a register which holds the width and height of the texture
+ * currently bound to the given sampler.
*/
static struct src_register
get_tex_dimensions( struct svga_shader_emitter *emit, int sampler_num )
struct src_register reg;
/* the width/height indexes start right after constants */
- idx = emit->key.fkey.tex[sampler_num].width_height_idx +
+ idx = emit->key.tex[sampler_num].width_height_idx +
emit->info.file_max[TGSI_FILE_CONSTANT] + 1;
reg = src_register( SVGA3DREG_CONST, idx );
{
struct src_register src0 =
translate_src_register(emit, &insn->Src[0]);
- struct src_register zero = get_zero_immediate( emit );
+ struct src_register zero = get_zero_immediate(emit);
SVGA3dShaderInstToken if_token = inst_token( SVGA3DOP_IFC );
if_token.control = SVGA3DOPCOMPC_NE;
- zero = scalar(zero, TGSI_SWIZZLE_X);
if (SVGA3dShaderGetRegType(src0.base.value) == SVGA3DREG_CONST) {
/*
static boolean
-emit_endif(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
+emit_else(struct svga_shader_emitter *emit,
+ const struct tgsi_full_instruction *insn)
{
- emit->dynamic_branching_level--;
-
- return emit_instruction(emit, inst_token(SVGA3DOP_ENDIF));
+ return emit_instruction(emit, inst_token(SVGA3DOP_ELSE));
}
static boolean
-emit_else(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
+emit_endif(struct svga_shader_emitter *emit,
+ const struct tgsi_full_instruction *insn)
{
- return emit_instruction(emit, inst_token(SVGA3DOP_ELSE));
+ emit->dynamic_branching_level--;
+
+ return emit_instruction(emit, inst_token(SVGA3DOP_ENDIF));
}
const struct src_register src1 =
translate_src_register(emit, &insn->Src[1] );
SVGA3dShaderDestToken temp = get_temp( emit );
- int i;
+ unsigned i;
/* For each enabled element, perform a RCP instruction. Note that
* RCP is scalar in SVGA3D:
/**
- * Translate the following TGSI DPH instruction.
- * DPH DST, SRC1, SRC2
- * To the following SVGA3D instruction sequence.
- * DP3 TMP, SRC1, SRC2
- * ADD DST, TMP, SRC2.wwww
+ * Sine / Cosine helper function.
*/
-static boolean
-emit_dph(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn )
-{
- SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
- const struct src_register src0 = translate_src_register(
- emit, &insn->Src[0] );
- struct src_register src1 =
- translate_src_register(emit, &insn->Src[1]);
- SVGA3dShaderDestToken temp = get_temp( emit );
-
- /* DP3 TMP, SRC1, SRC2 */
- if (!submit_op2( emit, inst_token( SVGA3DOP_DP3 ), temp, src0, src1 ))
- return FALSE;
-
- src1 = scalar(src1, TGSI_SWIZZLE_W);
-
- /* ADD DST, TMP, SRC2.wwww */
- if (!submit_op2( emit, inst_token( SVGA3DOP_ADD ), dst,
- src( temp ), src1 ))
- return FALSE;
-
- return TRUE;
-}
-
-
-/**
- * Translate the following TGSI DST instruction.
- * NRM DST, SRC
- * To the following SVGA3D instruction sequence.
- * DP3 TMP, SRC, SRC
- * RSQ TMP, TMP
- * MUL DST, SRC, TMP
- */
-static boolean
-emit_nrm(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
-{
- SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
- const struct src_register src0 =
- translate_src_register(emit, &insn->Src[0]);
- SVGA3dShaderDestToken temp = get_temp( emit );
-
- /* DP3 TMP, SRC, SRC */
- if (!submit_op2( emit, inst_token( SVGA3DOP_DP3 ), temp, src0, src0 ))
- return FALSE;
-
- /* RSQ TMP, TMP */
- if (!submit_op1( emit, inst_token( SVGA3DOP_RSQ ), temp, src( temp )))
- return FALSE;
-
- /* MUL DST, SRC, TMP */
- if (!submit_op2( emit, inst_token( SVGA3DOP_MUL ), dst,
- src0, src( temp )))
- return FALSE;
-
- return TRUE;
-}
-
-
static boolean
do_emit_sincos(struct svga_shader_emitter *emit,
SVGA3dShaderDestToken dst,
}
-static boolean
-emit_sincos(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
-{
- SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
- struct src_register src0 = translate_src_register(emit, &insn->Src[0]);
- SVGA3dShaderDestToken temp = get_temp( emit );
-
- /* SCS TMP SRC */
- if (!do_emit_sincos(emit, writemask(temp, TGSI_WRITEMASK_XY), src0 ))
- return FALSE;
-
- /* MOV DST TMP */
- if (!submit_op1( emit, inst_token( SVGA3DOP_MOV ), dst, src( temp ) ))
- return FALSE;
-
- return TRUE;
-}
-
-
/**
+ * Translate TGSI SIN instruction into:
* SCS TMP SRC
* MOV DST TMP.yyyy
*/
return TRUE;
}
+
/*
+ * Translate TGSI COS instruction into:
* SCS TMP SRC
* MOV DST TMP.xxxx
*/
}
+/**
+ * Translate/emit TGSI SSG (Set Sign: -1, 0, +1) instruction.
+ */
static boolean
emit_ssg(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
src( temp0 ), src( temp1 ) );
}
- zero = get_zero_immediate( emit );
- one = scalar( zero, TGSI_SWIZZLE_W );
- zero = scalar( zero, TGSI_SWIZZLE_X );
+ one = get_one_immediate(emit);
+ zero = get_zero_immediate(emit);
/* CMP TMP0, SRC0, one, zero */
if (!submit_op3( emit, inst_token( SVGA3DOP_CMP ),
/**
- * ADD DST SRC0, negate(SRC0)
+ * Translate/emit KILL_IF instruction (kill if any of X,Y,Z,W are negative).
*/
-static boolean
-emit_sub(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
-{
- SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
- struct src_register src0 = translate_src_register(
- emit, &insn->Src[0] );
- struct src_register src1 = translate_src_register(
- emit, &insn->Src[1] );
-
- src1 = negate(src1);
-
- if (!submit_op2( emit, inst_token( SVGA3DOP_ADD ), dst,
- src0, src1 ))
- return FALSE;
-
- return TRUE;
-}
-
-
static boolean
emit_kill_if(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
{
const struct tgsi_full_src_register *reg = &insn->Src[0];
struct src_register src0, srcIn;
- /* is the W component tested in another position? */
- const boolean w_tested = (reg->Register.SwizzleW == reg->Register.SwizzleX ||
- reg->Register.SwizzleW == reg->Register.SwizzleY ||
- reg->Register.SwizzleW == reg->Register.SwizzleZ);
const boolean special = (reg->Register.Absolute ||
reg->Register.Negate ||
reg->Register.Indirect ||
src0 = srcIn = translate_src_register( emit, reg );
- if (special || !w_tested) {
+ if (special) {
/* need a temp reg */
temp = get_temp( emit );
}
if (special) {
/* move the source into a temp register */
- submit_op1( emit, inst_token( SVGA3DOP_MOV ),
- writemask( temp, TGSI_WRITEMASK_XYZ ),
- src0 );
+ submit_op1(emit, inst_token(SVGA3DOP_MOV), temp, src0);
src0 = src( temp );
}
- /* do the texkill (on the xyz components) */
+ /* Do the texkill by checking if any of the XYZW components are < 0.
+ * Note that ps_2_0 and later take XYZW in consideration, while ps_1_x
+ * only used XYZ. The MSDN documentation about this is incorrect.
+ */
if (!submit_op0( emit, inst_token( SVGA3DOP_TEXKILL ), dst(src0) ))
return FALSE;
- if (!w_tested) {
- /* need to emit a second texkill to test the W component */
- /* put src.wwww into temp register */
- if (!submit_op1(emit,
- inst_token( SVGA3DOP_MOV ),
- writemask( temp, TGSI_WRITEMASK_XYZ ),
- scalar(srcIn, TGSI_SWIZZLE_W)))
- return FALSE;
-
- /* second texkill */
- if (!submit_op0( emit, inst_token( SVGA3DOP_TEXKILL ), temp ))
- return FALSE;
- }
-
return TRUE;
}
/**
- * unconditional kill
+ * Translate/emit unconditional kill instruction (usually found inside
+ * an IF/ELSE/ENDIF block).
*/
static boolean
emit_kill(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
{
SVGA3dShaderDestToken temp;
- struct src_register one = scalar( get_zero_immediate( emit ),
- TGSI_SWIZZLE_W );
+ struct src_register one = get_one_immediate(emit);
SVGA3dShaderInstToken inst = inst_token( SVGA3DOP_TEXKILL );
/* texkill doesn't allow negation on the operand so lets move
-/* Implement conditionals by initializing destination reg to 'fail',
+/**
+ * Implement conditionals by initializing destination reg to 'fail',
* then set predicate reg with UFOP_SETP, then move 'pass' to dest
* based on predicate reg.
*
*/
static boolean
emit_conditional(struct svga_shader_emitter *emit,
- unsigned compare_func,
+ enum pipe_compare_func compare_func,
SVGA3dShaderDestToken dst,
struct src_register src0,
struct src_register src1,
struct src_register fail)
{
SVGA3dShaderDestToken pred_reg = dst_register( SVGA3DREG_PREDICATE, 0 );
- SVGA3dShaderInstToken setp_token, mov_token;
- setp_token = inst_token( SVGA3DOP_SETP );
+ SVGA3dShaderInstToken setp_token;
switch (compare_func) {
case PIPE_FUNC_NEVER:
dst, fail );
break;
case PIPE_FUNC_LESS:
- setp_token.control = SVGA3DOPCOMP_LT;
+ setp_token = inst_token_setp(SVGA3DOPCOMP_LT);
break;
case PIPE_FUNC_EQUAL:
- setp_token.control = SVGA3DOPCOMP_EQ;
+ setp_token = inst_token_setp(SVGA3DOPCOMP_EQ);
break;
case PIPE_FUNC_LEQUAL:
- setp_token.control = SVGA3DOPCOMP_LE;
+ setp_token = inst_token_setp(SVGA3DOPCOMP_LE);
break;
case PIPE_FUNC_GREATER:
- setp_token.control = SVGA3DOPCOMP_GT;
+ setp_token = inst_token_setp(SVGA3DOPCOMP_GT);
break;
case PIPE_FUNC_NOTEQUAL:
- setp_token.control = SVGA3DOPCOMPC_NE;
+ setp_token = inst_token_setp(SVGA3DOPCOMPC_NE);
break;
case PIPE_FUNC_GEQUAL:
- setp_token.control = SVGA3DOPCOMP_GE;
+ setp_token = inst_token_setp(SVGA3DOPCOMP_GE);
break;
case PIPE_FUNC_ALWAYS:
return submit_op1( emit, inst_token( SVGA3DOP_MOV ),
src0, src1 ))
return FALSE;
- mov_token = inst_token( SVGA3DOP_MOV );
-
/* MOV dst, fail */
- if (!submit_op1( emit, mov_token, dst,
- fail ))
+ if (!submit_op1(emit, inst_token(SVGA3DOP_MOV), dst, fail))
return FALSE;
/* MOV dst, pass (predicated)
* Note that the predicate reg (and possible modifiers) is passed
* as the first source argument.
*/
- mov_token.predicated = 1;
- if (!submit_op2( emit, mov_token, dst,
- src( pred_reg ), pass ))
+ if (!submit_op2(emit,
+ inst_token_predicated(SVGA3DOP_MOV), dst,
+ src(pred_reg), pass))
return FALSE;
return TRUE;
}
+/**
+ * Helper for emiting 'selection' commands. Basically:
+ * if (src0 OP src1)
+ * dst = 1.0;
+ * else
+ * dst = 0.0;
+ */
static boolean
emit_select(struct svga_shader_emitter *emit,
- unsigned compare_func,
+ enum pipe_compare_func compare_func,
SVGA3dShaderDestToken dst,
struct src_register src0,
struct src_register src1 )
{
struct src_register one, zero;
/* zero immediate is 0,0,0,1 */
- zero = get_zero_immediate( emit );
- one = scalar( zero, TGSI_SWIZZLE_W );
- zero = scalar( zero, TGSI_SWIZZLE_X );
+ zero = get_zero_immediate(emit);
+ one = get_one_immediate(emit);
- return emit_conditional(
- emit,
- compare_func,
- dst,
- src0,
- src1,
- one, zero);
+ return emit_conditional(emit, compare_func, dst, src0, src1, one, zero);
}
}
+/**
+ * Translate/emit a TGSI SEQ, SNE, SLT, SGE, etc. instruction.
+ */
static boolean
emit_select_op(struct svga_shader_emitter *emit,
unsigned compare,
/**
- * Translate TGSI CMP instruction.
+ * Translate TGSI CMP instruction. Component-wise:
+ * dst = (src0 < 0.0) ? src1 : src2
*/
static boolean
emit_cmp(struct svga_shader_emitter *emit,
translate_src_register(emit, &insn->Src[2] );
if (emit->unit == PIPE_SHADER_VERTEX) {
- struct src_register zero =
- scalar(get_zero_immediate(emit), TGSI_SWIZZLE_X);
+ struct src_register zero = get_zero_immediate(emit);
/* We used to simulate CMP with SLT+LRP. But that didn't work when
* src1 or src2 was Inf/NaN. In particular, GLSL sqrt(0) failed
* because it involves a CMP to handle the 0 case.
/**
- * Translate texture instructions to SVGA3D representation.
+ * Translate/emit 2-operand (coord, sampler) texture instructions.
*/
static boolean
emit_tex2(struct svga_shader_emitter *emit,
texcoord = translate_src_register( emit, &insn->Src[0] );
sampler = translate_src_register( emit, &insn->Src[1] );
- if (emit->key.fkey.tex[sampler.base.num].unnormalized ||
+ if (emit->key.tex[sampler.base.num].unnormalized ||
emit->dynamic_branching_level > 0)
tmp = get_temp( emit );
if (emit->dynamic_branching_level > 0 &&
inst.op == SVGA3DOP_TEX &&
SVGA3dShaderGetRegType(texcoord.base.value) == SVGA3DREG_TEMP) {
- struct src_register zero = get_zero_immediate( emit );
+ struct src_register zero = get_zero_immediate(emit);
/* MOV tmp, texcoord */
if (!submit_op1( emit,
if (!submit_op1( emit,
inst_token( SVGA3DOP_MOV ),
writemask( tmp, TGSI_WRITEMASK_W ),
- scalar( zero, TGSI_SWIZZLE_X )))
+ zero ))
return FALSE;
texcoord = src( tmp );
/* Explicit normalization of texcoords:
*/
- if (emit->key.fkey.tex[sampler.base.num].unnormalized) {
+ if (emit->key.tex[sampler.base.num].unnormalized) {
struct src_register wh = get_tex_dimensions( emit, sampler.base.num );
/* MUL tmp, SRC0, WH */
/**
- * Translate texture instructions to SVGA3D representation.
+ * Translate/emit 4-operand (coord, ddx, ddy, sampler) texture instructions.
*/
static boolean
emit_tex4(struct svga_shader_emitter *emit,
/**
- * Emit texture swizzle code.
+ * Emit texture swizzle code. We do this here since SVGA samplers don't
+ * directly support swizzles.
*/
static boolean
emit_tex_swizzle(struct svga_shader_emitter *emit,
const unsigned swizzleIn[4] = {swizzle_x, swizzle_y, swizzle_z, swizzle_w};
unsigned srcSwizzle[4];
unsigned srcWritemask = 0x0, zeroWritemask = 0x0, oneWritemask = 0x0;
- int i;
+ unsigned i;
/* build writemasks and srcSwizzle terms */
for (i = 0; i < 4; i++) {
- if (swizzleIn[i] == PIPE_SWIZZLE_ZERO) {
+ if (swizzleIn[i] == PIPE_SWIZZLE_0) {
srcSwizzle[i] = TGSI_SWIZZLE_X + i;
zeroWritemask |= (1 << i);
}
- else if (swizzleIn[i] == PIPE_SWIZZLE_ONE) {
+ else if (swizzleIn[i] == PIPE_SWIZZLE_1) {
srcSwizzle[i] = TGSI_SWIZZLE_X + i;
oneWritemask |= (1 << i);
}
if (!submit_op1(emit,
inst_token(SVGA3DOP_MOV),
writemask(dst, zeroWritemask),
- scalar(get_zero_immediate(emit), TGSI_SWIZZLE_X)))
+ get_zero_immediate(emit)))
return FALSE;
}
if (!submit_op1(emit,
inst_token(SVGA3DOP_MOV),
writemask(dst, oneWritemask),
- scalar(get_zero_immediate(emit), TGSI_SWIZZLE_W)))
+ get_one_immediate(emit)))
return FALSE;
}
}
+/**
+ * Translate/emit a TGSI texture sample instruction.
+ */
static boolean
emit_tex(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
const unsigned unit = src1.base.num;
/* check for shadow samplers */
- boolean compare = (emit->key.fkey.tex[unit].compare_mode ==
+ boolean compare = (emit->key.tex[unit].compare_mode ==
PIPE_TEX_COMPARE_R_TO_TEXTURE);
/* texture swizzle */
- boolean swizzle = (emit->key.fkey.tex[unit].swizzle_r != PIPE_SWIZZLE_RED ||
- emit->key.fkey.tex[unit].swizzle_g != PIPE_SWIZZLE_GREEN ||
- emit->key.fkey.tex[unit].swizzle_b != PIPE_SWIZZLE_BLUE ||
- emit->key.fkey.tex[unit].swizzle_a != PIPE_SWIZZLE_ALPHA);
+ boolean swizzle = (emit->key.tex[unit].swizzle_r != PIPE_SWIZZLE_X ||
+ emit->key.tex[unit].swizzle_g != PIPE_SWIZZLE_Y ||
+ emit->key.tex[unit].swizzle_b != PIPE_SWIZZLE_Z ||
+ emit->key.tex[unit].swizzle_a != PIPE_SWIZZLE_W);
- boolean saturate = insn->Instruction.Saturate != TGSI_SAT_NONE;
+ boolean saturate = insn->Instruction.Saturate;
/* If doing compare processing or tex swizzle or saturation, we need to put
* the fetched color into a temporary so it can be used as a source later on.
/* Compare texture sample value against R component of texcoord */
if (!emit_select(emit,
- emit->key.fkey.tex[unit].compare_func,
+ emit->key.tex[unit].compare_func,
writemask( dst2, TGSI_WRITEMASK_XYZ ),
r_coord,
tex_src_x))
}
if (dst.mask & TGSI_WRITEMASK_W) {
- struct src_register one =
- scalar( get_zero_immediate( emit ), TGSI_SWIZZLE_W );
+ struct src_register one = get_one_immediate(emit);
if (!submit_op1( emit, inst_token( SVGA3DOP_MOV ),
writemask( dst2, TGSI_WRITEMASK_W ),
/* swizzle from tex_result to dst (handles saturation too, if any) */
emit_tex_swizzle(emit,
dst, src(tex_result),
- emit->key.fkey.tex[unit].swizzle_r,
- emit->key.fkey.tex[unit].swizzle_g,
- emit->key.fkey.tex[unit].swizzle_b,
- emit->key.fkey.tex[unit].swizzle_a);
+ emit->key.tex[unit].swizzle_r,
+ emit->key.tex[unit].swizzle_g,
+ emit->key.tex[unit].swizzle_b,
+ emit->key.tex[unit].swizzle_a);
}
return TRUE;
static boolean
-emit_bgnloop2(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
+emit_bgnloop(struct svga_shader_emitter *emit,
+ const struct tgsi_full_instruction *insn)
{
SVGA3dShaderInstToken inst = inst_token( SVGA3DOP_LOOP );
struct src_register loop_reg = src_register( SVGA3DREG_LOOP, 0 );
static boolean
-emit_endloop2(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
+emit_endloop(struct svga_shader_emitter *emit,
+ const struct tgsi_full_instruction *insn)
{
SVGA3dShaderInstToken inst = inst_token( SVGA3DOP_ENDLOOP );
}
+/**
+ * Translate/emit TGSI BREAK (out of loop) instruction.
+ */
static boolean
emit_brk(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
}
+/**
+ * Emit simple instruction which operates on one scalar value (not
+ * a vector). Ex: LG2, RCP, RSQ.
+ */
static boolean
emit_scalar_op1(struct svga_shader_emitter *emit,
- unsigned opcode,
+ SVGA3dShaderOpCodeType opcode,
const struct tgsi_full_instruction *insn)
{
SVGA3dShaderInstToken inst;
}
+/**
+ * Translate/emit a simple instruction (one which has no special-case
+ * code) such as ADD, MUL, MIN, MAX.
+ */
static boolean
emit_simple_instruction(struct svga_shader_emitter *emit,
- unsigned opcode,
+ SVGA3dShaderOpCodeType opcode,
const struct tgsi_full_instruction *insn)
{
const struct tgsi_full_src_register *src = insn->Src;
}
+/**
+ * TGSI_OPCODE_MOVE is only special-cased here to detect the
+ * svga_fragment_shader::constant_color_output case.
+ */
+static boolean
+emit_mov(struct svga_shader_emitter *emit,
+ const struct tgsi_full_instruction *insn)
+{
+ const struct tgsi_full_src_register *src = &insn->Src[0];
+ const struct tgsi_full_dst_register *dst = &insn->Dst[0];
+
+ if (emit->unit == PIPE_SHADER_FRAGMENT &&
+ dst->Register.File == TGSI_FILE_OUTPUT &&
+ dst->Register.Index == 0 &&
+ src->Register.File == TGSI_FILE_CONSTANT &&
+ !src->Register.Indirect) {
+ emit->constant_color_output = TRUE;
+ }
+
+ return emit_simple_instruction(emit, SVGA3DOP_MOV, insn);
+}
+
+
+/**
+ * Translate/emit TGSI DDX, DDY instructions.
+ */
static boolean
emit_deriv(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn )
if (emit->dynamic_branching_level > 0 &&
insn->Src[0].Register.File == TGSI_FILE_TEMPORARY)
{
- struct src_register zero = get_zero_immediate( emit );
SVGA3dShaderDestToken dst =
translate_dst_register( emit, insn, 0 );
if (!submit_op1(emit,
inst_token( SVGA3DOP_MOV ),
dst,
- scalar(zero, TGSI_SWIZZLE_X)))
+ get_zero_immediate(emit)))
return FALSE;
return TRUE;
}
else {
- unsigned opcode;
+ SVGA3dShaderOpCodeType opcode;
const struct tgsi_full_src_register *reg = &insn->Src[0];
SVGA3dShaderInstToken inst;
SVGA3dShaderDestToken dst;
}
+/**
+ * Translate/emit ARL (Address Register Load) instruction. Used to
+ * move a value into the special 'address' register. Used to implement
+ * indirect/variable indexing into arrays.
+ */
static boolean
emit_arl(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
}
+/**
+ * Emit a LRP (linear interpolation) instruction.
+ */
static boolean
-emit_xpd(struct svga_shader_emitter *emit,
- const struct tgsi_full_instruction *insn)
+submit_lrp(struct svga_shader_emitter *emit,
+ SVGA3dShaderDestToken dst,
+ struct src_register src0,
+ struct src_register src1,
+ struct src_register src2)
{
- SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
- const struct src_register src0 = translate_src_register(
- emit, &insn->Src[0] );
- const struct src_register src1 = translate_src_register(
- emit, &insn->Src[1] );
+ SVGA3dShaderDestToken tmp;
boolean need_dst_tmp = FALSE;
- /* XPD can only output to a temporary */
- if (SVGA3dShaderGetRegType(dst.value) != SVGA3DREG_TEMP)
- need_dst_tmp = TRUE;
-
- /* The dst reg must not be the same as src0 or src1*/
- if (alias_src_dst(src0, dst) ||
- alias_src_dst(src1, dst))
+ /* The dst reg must be a temporary, and not be the same as src0 or src2 */
+ if (SVGA3dShaderGetRegType(dst.value) != SVGA3DREG_TEMP ||
+ alias_src_dst(src0, dst) ||
+ alias_src_dst(src2, dst))
need_dst_tmp = TRUE;
if (need_dst_tmp) {
- SVGA3dShaderDestToken tmp = get_temp( emit );
-
- /* Obey DX9 restrictions on mask:
- */
- tmp.mask = dst.mask & TGSI_WRITEMASK_XYZ;
-
- if (!submit_op2(emit, inst_token( SVGA3DOP_CRS ), tmp, src0, src1))
- return FALSE;
-
- if (!submit_op1(emit, inst_token( SVGA3DOP_MOV ), dst, src( tmp )))
- return FALSE;
+ tmp = get_temp( emit );
+ tmp.mask = dst.mask;
}
else {
- if (!submit_op2(emit, inst_token( SVGA3DOP_CRS ), dst, src0, src1))
- return FALSE;
+ tmp = dst;
}
- /* Need to emit 1.0 to dst.w?
- */
- if (dst.mask & TGSI_WRITEMASK_W) {
- struct src_register zero = get_zero_immediate( emit );
+ if (!submit_op3(emit, inst_token( SVGA3DOP_LRP ), tmp, src0, src1, src2))
+ return FALSE;
- if (!submit_op1(emit,
- inst_token( SVGA3DOP_MOV ),
- writemask(dst, TGSI_WRITEMASK_W),
- zero))
+ if (need_dst_tmp) {
+ if (!submit_op1(emit, inst_token( SVGA3DOP_MOV ), dst, src( tmp )))
return FALSE;
}
}
+/**
+ * Translate/emit LRP (Linear Interpolation) instruction.
+ */
static boolean
emit_lrp(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
return submit_lrp(emit, dst, src0, src1, src2);
}
-
+/**
+ * Translate/emit DST (Distance function) instruction.
+ */
static boolean
emit_dst_insn(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
emit, &insn->Src[0] );
const struct src_register src1 = translate_src_register(
emit, &insn->Src[1] );
- struct src_register zero = get_zero_immediate( emit );
boolean need_tmp = FALSE;
if (SVGA3dShaderGetRegType(dst.value) != SVGA3DREG_TEMP ||
if (tmp.mask & TGSI_WRITEMASK_XW) {
if (!submit_op1( emit, inst_token( SVGA3DOP_MOV ),
writemask(tmp, TGSI_WRITEMASK_XW ),
- scalar( zero, 3 )))
+ get_one_immediate(emit)))
return FALSE;
}
SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
struct src_register src0 =
translate_src_register( emit, &insn->Src[0] );
- struct src_register zero = get_zero_immediate( emit );
SVGA3dShaderDestToken fraction;
if (dst.mask & TGSI_WRITEMASK_Y)
if (dst.mask & TGSI_WRITEMASK_W) {
if (!submit_op1( emit, inst_token( SVGA3DOP_MOV ),
writemask(dst, TGSI_WRITEMASK_W),
- scalar( zero, TGSI_SWIZZLE_W ) ))
+ get_one_immediate(emit)))
return FALSE;
}
}
+/**
+ * Translate/emit LIT (Lighting helper) instruction.
+ */
static boolean
emit_lit(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
SVGA3dShaderDestToken tmp = get_temp( emit );
const struct src_register src0 = translate_src_register(
emit, &insn->Src[0] );
- struct src_register zero = get_zero_immediate( emit );
/* tmp = pow(src.y, src.w)
*/
*/
{
SVGA3dShaderDestToken pred_reg = dst_register( SVGA3DREG_PREDICATE, 0 );
- SVGA3dShaderInstToken setp_token, mov_token;
struct src_register predsrc;
- setp_token = inst_token( SVGA3DOP_SETP );
- mov_token = inst_token( SVGA3DOP_MOV );
-
- setp_token.control = SVGA3DOPCOMP_GT;
-
/* D3D vs GL semantics:
*/
if (0)
predsrc = swizzle(src0, 0, 0, 0, 0); /* GL */
/* SETP src0.xxyy, GT, {0}.x */
- if (!submit_op2( emit, setp_token, pred_reg,
+ if (!submit_op2( emit,
+ inst_token_setp(SVGA3DOPCOMP_GT),
+ pred_reg,
predsrc,
- swizzle(zero, 0, 0, 0, 0) ))
+ get_zero_immediate(emit)))
return FALSE;
/* MOV dst, fail */
if (!submit_op1( emit, inst_token( SVGA3DOP_MOV ), dst,
- swizzle(zero, 3, 0, 0, 3 )))
+ get_immediate(emit, 1.0f, 0.0f, 0.0f, 1.0f)))
return FALSE;
/* MOV dst.yz, tmp (predicated)
* as the first source argument.
*/
if (dst.mask & TGSI_WRITEMASK_YZ) {
- mov_token.predicated = 1;
- if (!submit_op2( emit, mov_token,
+ if (!submit_op2( emit,
+ inst_token_predicated(SVGA3DOP_MOV),
writemask(dst, TGSI_WRITEMASK_YZ),
src( pred_reg ), src( tmp ) ))
return FALSE;
SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
struct src_register src0 =
translate_src_register( emit, &insn->Src[0] );
- struct src_register zero = get_zero_immediate( emit );
SVGA3dShaderDestToken abs_tmp;
struct src_register abs_src0;
SVGA3dShaderDestToken log2_abs;
if (dst.mask & TGSI_WRITEMASK_W) {
if (!submit_op1( emit, inst_token( SVGA3DOP_MOV ),
writemask(dst, TGSI_WRITEMASK_W),
- scalar( zero, TGSI_SWIZZLE_W ) ))
+ get_one_immediate(emit)))
return FALSE;
}
}
+/**
+ * Translate/emit "begin subroutine" instruction/marker/label.
+ */
static boolean
emit_bgnsub(struct svga_shader_emitter *emit,
unsigned position,
}
+/**
+ * Translate/emit subroutine call instruction.
+ */
static boolean
emit_call(struct svga_shader_emitter *emit,
const struct tgsi_full_instruction *insn)
break;
}
- if (emit->nr_labels == Elements(emit->label))
+ if (emit->nr_labels == ARRAY_SIZE(emit->label))
return FALSE;
if (i == emit->nr_labels) {
}
-
+/**
+ * Translate any TGSI instruction to SVGA.
+ */
static boolean
svga_emit_instruction(struct svga_shader_emitter *emit,
unsigned position,
case TGSI_OPCODE_DP2:
return emit_dp2( emit, insn );
- case TGSI_OPCODE_DPH:
- return emit_dph( emit, insn );
-
- case TGSI_OPCODE_NRM:
- return emit_nrm( emit, insn );
-
case TGSI_OPCODE_COS:
return emit_cos( emit, insn );
case TGSI_OPCODE_SIN:
return emit_sin( emit, insn );
- case TGSI_OPCODE_SCS:
- return emit_sincos( emit, insn );
-
case TGSI_OPCODE_END:
/* TGSI always finishes the main func with an END */
return emit_end( emit );
case TGSI_OPCODE_SLE:
return emit_select_op( emit, PIPE_FUNC_LEQUAL, insn );
- case TGSI_OPCODE_SUB:
- return emit_sub( emit, insn );
-
case TGSI_OPCODE_POW:
return emit_pow( emit, insn );
return emit_scalar_op1( emit, SVGA3DOP_RCP, insn );
case TGSI_OPCODE_CONT:
+ /* not expected (we return PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED = 0) */
+ return FALSE;
+
case TGSI_OPCODE_RET:
/* This is a noop -- we tell mesa that we can't support RET
* within a function (early return), so this will always be
/* These aren't actually used by any of the frontends we care
* about:
*/
- case TGSI_OPCODE_CLAMP:
case TGSI_OPCODE_AND:
case TGSI_OPCODE_OR:
case TGSI_OPCODE_I2F:
return emit_endif( emit, insn );
case TGSI_OPCODE_BGNLOOP:
- return emit_bgnloop2( emit, insn );
+ return emit_bgnloop( emit, insn );
case TGSI_OPCODE_ENDLOOP:
- return emit_endloop2( emit, insn );
+ return emit_endloop( emit, insn );
case TGSI_OPCODE_BRK:
return emit_brk( emit, insn );
- case TGSI_OPCODE_XPD:
- return emit_xpd( emit, insn );
-
case TGSI_OPCODE_KILL:
return emit_kill( emit, insn );
case TGSI_OPCODE_SSG:
return emit_ssg( emit, insn );
+ case TGSI_OPCODE_MOV:
+ return emit_mov( emit, insn );
+
default:
{
- unsigned opcode = translate_opcode(insn->Instruction.Opcode);
+ SVGA3dShaderOpCodeType opcode =
+ translate_opcode(insn->Instruction.Opcode);
if (opcode == SVGA3DOP_LAST_INST)
return FALSE;
}
+/**
+ * Translate/emit a TGSI IMMEDIATE declaration.
+ * An immediate vector is a constant that's hard-coded into the shader.
+ */
static boolean
svga_emit_immediate(struct svga_shader_emitter *emit,
- struct tgsi_full_immediate *imm)
+ const struct tgsi_full_immediate *imm)
{
static const float id[4] = {0,0,0,1};
float value[4];
unsigned i;
assert(1 <= imm->Immediate.NrTokens && imm->Immediate.NrTokens <= 5);
- for (i = 0; i < imm->Immediate.NrTokens - 1; i++) {
+ for (i = 0; i < 4 && i < imm->Immediate.NrTokens - 1; i++) {
float f = imm->u[i].Float;
value[i] = util_is_inf_or_nan(f) ? 0.0f : f;
}
+ /* If the immediate has less than four values, fill in the remaining
+ * positions from id={0,0,0,1}.
+ */
for ( ; i < 4; i++ )
value[i] = id[i];
}
+/**
+ * Emit special VS instructions at top of shader.
+ */
static boolean
emit_vs_preamble(struct svga_shader_emitter *emit)
{
- if (!emit->key.vkey.need_prescale) {
+ if (!emit->key.vs.need_prescale) {
if (!make_immediate( emit, 0, 0, .5, .5,
&emit->imm_0055))
return FALSE;
}
+/**
+ * Emit special PS instructions at top of shader.
+ */
static boolean
emit_ps_preamble(struct svga_shader_emitter *emit)
{
}
+/**
+ * Emit special PS instructions at end of shader.
+ */
static boolean
emit_ps_postamble(struct svga_shader_emitter *emit)
{
}
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
- if (SVGA3dShaderGetRegType(emit->true_col[i].value) != 0) {
+ if (SVGA3dShaderGetRegType(emit->true_color_output[i].value) != 0) {
/* Potentially override output colors with white for XOR
* logicop workaround.
*/
if (emit->unit == PIPE_SHADER_FRAGMENT &&
- emit->key.fkey.white_fragments) {
- struct src_register one = scalar( get_zero_immediate( emit ),
- TGSI_SWIZZLE_W );
+ emit->key.fs.white_fragments) {
+ struct src_register one = get_one_immediate(emit);
if (!submit_op1( emit,
inst_token(SVGA3DOP_MOV),
- emit->true_col[i],
+ emit->true_color_output[i],
one ))
return FALSE;
}
+ else if (emit->unit == PIPE_SHADER_FRAGMENT &&
+ i < emit->key.fs.write_color0_to_n_cbufs) {
+ /* Write temp color output [0] to true output [i] */
+ if (!submit_op1(emit, inst_token(SVGA3DOP_MOV),
+ emit->true_color_output[i],
+ src(emit->temp_color_output[0]))) {
+ return FALSE;
+ }
+ }
else {
if (!submit_op1( emit,
inst_token(SVGA3DOP_MOV),
- emit->true_col[i],
- src(emit->temp_col[i]) ))
+ emit->true_color_output[i],
+ src(emit->temp_color_output[i]) ))
return FALSE;
}
}
}
+/**
+ * Emit special VS instructions at end of shader.
+ */
static boolean
emit_vs_postamble(struct svga_shader_emitter *emit)
{
/* Need to perform various manipulations on vertex position to cope
* with the different GL and D3D clip spaces.
*/
- if (emit->key.vkey.need_prescale) {
+ if (emit->key.vs.need_prescale) {
SVGA3dShaderDestToken temp_pos = emit->temp_pos;
SVGA3dShaderDestToken depth = emit->depth_pos;
SVGA3dShaderDestToken pos = emit->true_pos;
/**
* For the pixel shader: emit the code which chooses the front
* or back face color depending on triangle orientation.
+ * This happens at the top of the fragment shader.
*
* 0: IF VFACE :4
* 1: COLOR = FrontColor;
struct src_register back[2];
SVGA3dShaderDestToken color[2];
int count = emit->internal_color_count;
- int i;
+ unsigned i;
SVGA3dShaderInstToken if_token;
if (count == 0)
return TRUE;
vface = get_vface( emit );
- zero = get_zero_immediate( emit );
+ zero = get_zero_immediate(emit);
/* Can't use get_temp() to allocate the color reg as such
* temporaries will be reclaimed after each instruction by the call
if_token = inst_token( SVGA3DOP_IFC );
- if (emit->key.fkey.front_ccw)
+ if (emit->key.fs.front_ccw)
if_token.control = SVGA3DOPCOMP_LT;
else
if_token.control = SVGA3DOPCOMP_GT;
- zero = scalar(zero, TGSI_SWIZZLE_X);
-
if (!(emit_instruction( emit, if_token ) &&
emit_src( emit, vface ) &&
emit_src( emit, zero ) ))
/**
+ * Emit special setup code for the front/back face register in the FS.
* 0: SETP_GT TEMP, VFACE, 0
* where TEMP is a fake frontface register
*/
static boolean
emit_frontface(struct svga_shader_emitter *emit)
{
- struct src_register vface, zero;
+ struct src_register vface;
SVGA3dShaderDestToken temp;
struct src_register pass, fail;
vface = get_vface( emit );
- zero = get_zero_immediate( emit );
/* Can't use get_temp() to allocate the fake frontface reg as such
* temporaries will be reclaimed after each instruction by the call
temp = dst_register( SVGA3DREG_TEMP,
emit->nr_hw_temp++ );
- if (emit->key.fkey.front_ccw) {
- pass = scalar( zero, TGSI_SWIZZLE_X );
- fail = scalar( zero, TGSI_SWIZZLE_W );
+ if (emit->key.fs.front_ccw) {
+ pass = get_zero_immediate(emit);
+ fail = get_one_immediate(emit);
} else {
- pass = scalar( zero, TGSI_SWIZZLE_W );
- fail = scalar( zero, TGSI_SWIZZLE_X );
+ pass = get_one_immediate(emit);
+ fail = get_zero_immediate(emit);
}
if (!emit_conditional(emit, PIPE_FUNC_GREATER,
- temp, vface, scalar( zero, TGSI_SWIZZLE_X ),
+ temp, vface, get_zero_immediate(emit),
pass, fail))
return FALSE;
static boolean
emit_inverted_texcoords(struct svga_shader_emitter *emit)
{
- struct src_register zero = get_zero_immediate(emit);
- struct src_register pos_neg_one = get_pos_neg_one_immediate( emit );
unsigned inverted_texcoords = emit->inverted_texcoords;
while (inverted_texcoords) {
assert(emit->inverted_texcoords & (1 << unit));
- assert(unit < Elements(emit->ps_true_texcoord));
+ assert(unit < ARRAY_SIZE(emit->ps_true_texcoord));
- assert(unit < Elements(emit->ps_inverted_texcoord_input));
+ assert(unit < ARRAY_SIZE(emit->ps_inverted_texcoord_input));
assert(emit->ps_inverted_texcoord_input[unit]
- < Elements(emit->input_map));
+ < ARRAY_SIZE(emit->input_map));
/* inverted = coord * (1, -1, 1, 1) + (0, 1, 0, 0) */
if (!submit_op3(emit,
inst_token(SVGA3DOP_MAD),
dst(emit->ps_inverted_texcoord[unit]),
emit->ps_true_texcoord[unit],
- swizzle(pos_neg_one, 0, 3, 0, 0), /* (1, -1, 1, 1) */
- swizzle(zero, 0, 3, 0, 0))) /* (0, 1, 0, 0) */
+ get_immediate(emit, 1.0f, -1.0f, 1.0f, 1.0f),
+ get_immediate(emit, 0.0f, 1.0f, 0.0f, 0.0f)))
return FALSE;
/* Reassign the input_map entry to the new texcoord register */
}
+/**
+ * Emit code to adjust vertex shader inputs/attributes:
+ * - Change range from [0,1] to [-1,1] (for normalized byte/short attribs).
+ * - Set attrib W component = 1.
+ */
+static boolean
+emit_adjusted_vertex_attribs(struct svga_shader_emitter *emit)
+{
+ unsigned adjust_mask = (emit->key.vs.adjust_attrib_range |
+ emit->key.vs.adjust_attrib_w_1);
+
+ while (adjust_mask) {
+ /* Adjust vertex attrib range and/or set W component = 1 */
+ const unsigned index = u_bit_scan(&adjust_mask);
+ struct src_register tmp;
+
+ /* allocate a temp reg */
+ tmp = src_register(SVGA3DREG_TEMP, emit->nr_hw_temp);
+ emit->nr_hw_temp++;
+
+ if (emit->key.vs.adjust_attrib_range & (1 << index)) {
+ /* The vertex input/attribute is supposed to be a signed value in
+ * the range [-1,1] but we actually fetched/converted it to the
+ * range [0,1]. This most likely happens when the app specifies a
+ * signed byte attribute but we interpreted it as unsigned bytes.
+ * See also svga_translate_vertex_format().
+ *
+ * Here, we emit some extra instructions to adjust
+ * the attribute values from [0,1] to [-1,1].
+ *
+ * The adjustment we implement is:
+ * new_attrib = attrib * 2.0;
+ * if (attrib >= 0.5)
+ * new_attrib = new_attrib - 2.0;
+ * This isn't exactly right (it's off by a bit or so) but close enough.
+ */
+ SVGA3dShaderDestToken pred_reg = dst_register(SVGA3DREG_PREDICATE, 0);
+
+ /* tmp = attrib * 2.0 */
+ if (!submit_op2(emit,
+ inst_token(SVGA3DOP_MUL),
+ dst(tmp),
+ emit->input_map[index],
+ get_two_immediate(emit)))
+ return FALSE;
+
+ /* pred = (attrib >= 0.5) */
+ if (!submit_op2(emit,
+ inst_token_setp(SVGA3DOPCOMP_GE),
+ pred_reg,
+ emit->input_map[index], /* vert attrib */
+ get_half_immediate(emit))) /* 0.5 */
+ return FALSE;
+
+ /* sub(pred) tmp, tmp, 2.0 */
+ if (!submit_op3(emit,
+ inst_token_predicated(SVGA3DOP_SUB),
+ dst(tmp),
+ src(pred_reg),
+ tmp,
+ get_two_immediate(emit)))
+ return FALSE;
+ }
+ else {
+ /* just copy the vertex input attrib to the temp register */
+ if (!submit_op1(emit,
+ inst_token(SVGA3DOP_MOV),
+ dst(tmp),
+ emit->input_map[index]))
+ return FALSE;
+ }
+
+ if (emit->key.vs.adjust_attrib_w_1 & (1 << index)) {
+ /* move 1 into W position of tmp */
+ if (!submit_op1(emit,
+ inst_token(SVGA3DOP_MOV),
+ writemask(dst(tmp), TGSI_WRITEMASK_W),
+ get_one_immediate(emit)))
+ return FALSE;
+ }
+
+ /* Reassign the input_map entry to the new tmp register */
+ emit->input_map[index] = tmp;
+ }
+
+ return TRUE;
+}
+
+
+/**
+ * Determine if we need to create the "common" immediate value which is
+ * used for generating useful vector constants such as {0,0,0,0} and
+ * {1,1,1,1}.
+ * We could just do this all the time except that we want to conserve
+ * registers whenever possible.
+ */
static boolean
-needs_to_create_zero( struct svga_shader_emitter *emit )
+needs_to_create_common_immediate(const struct svga_shader_emitter *emit)
{
unsigned i;
if (emit->unit == PIPE_SHADER_FRAGMENT) {
- if (emit->key.fkey.light_twoside)
+ if (emit->key.fs.light_twoside)
return TRUE;
- if (emit->key.fkey.white_fragments)
+ if (emit->key.fs.white_fragments)
return TRUE;
if (emit->emit_frontface)
if (emit->inverted_texcoords)
return TRUE;
- /* look for any PIPE_SWIZZLE_ZERO/ONE terms */
- for (i = 0; i < emit->key.fkey.num_textures; i++) {
- if (emit->key.fkey.tex[i].swizzle_r > PIPE_SWIZZLE_ALPHA ||
- emit->key.fkey.tex[i].swizzle_g > PIPE_SWIZZLE_ALPHA ||
- emit->key.fkey.tex[i].swizzle_b > PIPE_SWIZZLE_ALPHA ||
- emit->key.fkey.tex[i].swizzle_a > PIPE_SWIZZLE_ALPHA)
+ /* look for any PIPE_SWIZZLE_0/ONE terms */
+ for (i = 0; i < emit->key.num_textures; i++) {
+ if (emit->key.tex[i].swizzle_r > PIPE_SWIZZLE_W ||
+ emit->key.tex[i].swizzle_g > PIPE_SWIZZLE_W ||
+ emit->key.tex[i].swizzle_b > PIPE_SWIZZLE_W ||
+ emit->key.tex[i].swizzle_a > PIPE_SWIZZLE_W)
return TRUE;
}
- for (i = 0; i < emit->key.fkey.num_textures; i++) {
- if (emit->key.fkey.tex[i].compare_mode
+ for (i = 0; i < emit->key.num_textures; i++) {
+ if (emit->key.tex[i].compare_mode
== PIPE_TEX_COMPARE_R_TO_TEXTURE)
return TRUE;
}
}
-
- if (emit->unit == PIPE_SHADER_VERTEX) {
+ else if (emit->unit == PIPE_SHADER_VERTEX) {
if (emit->info.opcode_count[TGSI_OPCODE_CMP] >= 1)
return TRUE;
+ if (emit->key.vs.adjust_attrib_range ||
+ emit->key.vs.adjust_attrib_w_1)
+ return TRUE;
}
if (emit->info.opcode_count[TGSI_OPCODE_IF] >= 1 ||
emit->info.opcode_count[TGSI_OPCODE_SEQ] >= 1 ||
emit->info.opcode_count[TGSI_OPCODE_EXP] >= 1 ||
emit->info.opcode_count[TGSI_OPCODE_LOG] >= 1 ||
- emit->info.opcode_count[TGSI_OPCODE_XPD] >= 1 ||
emit->info.opcode_count[TGSI_OPCODE_KILL] >= 1)
return TRUE;
}
+/**
+ * Do we need to create a looping constant?
+ */
static boolean
-needs_to_create_loop_const( struct svga_shader_emitter *emit )
+needs_to_create_loop_const(const struct svga_shader_emitter *emit)
{
return (emit->info.opcode_count[TGSI_OPCODE_BGNLOOP] >= 1);
}
static boolean
-needs_to_create_arl_consts( struct svga_shader_emitter *emit )
+needs_to_create_arl_consts(const struct svga_shader_emitter *emit)
{
return (emit->num_arl_consts > 0);
}
pre_parse_add_indirect( struct svga_shader_emitter *emit,
int num, int current_arl)
{
- int i;
+ unsigned i;
assert(num < 0);
for (i = 0; i < emit->num_arl_consts; ++i) {
static boolean
svga_shader_emit_helpers(struct svga_shader_emitter *emit)
{
- if (needs_to_create_zero( emit )) {
- create_zero_immediate( emit );
+ if (needs_to_create_common_immediate( emit )) {
+ create_common_immediate( emit );
}
if (needs_to_create_loop_const( emit )) {
create_loop_const( emit );
}
if (emit->unit == PIPE_SHADER_FRAGMENT) {
+ if (!svga_shader_emit_samplers_decl( emit ))
+ return FALSE;
+
if (!emit_ps_preamble( emit ))
return FALSE;
- if (emit->key.fkey.light_twoside) {
+ if (emit->key.fs.light_twoside) {
if (!emit_light_twoside( emit ))
return FALSE;
}
return FALSE;
}
}
+ else {
+ assert(emit->unit == PIPE_SHADER_VERTEX);
+ if (emit->key.vs.adjust_attrib_range) {
+ if (!emit_adjusted_vertex_attribs(emit) ||
+ emit->key.vs.adjust_attrib_w_1) {
+ return FALSE;
+ }
+ }
+ }
return TRUE;
}
+/**
+ * This is the main entrypoint into the TGSI instruction translater.
+ * Translate TGSI shader tokens into an SVGA shader.
+ */
boolean
svga_shader_emit_instructions(struct svga_shader_emitter *emit,
const struct tgsi_token *tokens)
{
struct tgsi_parse_context parse;
+ const struct tgsi_token *new_tokens = NULL;
boolean ret = TRUE;
boolean helpers_emitted = FALSE;
unsigned line_nr = 0;
+ if (emit->unit == PIPE_SHADER_FRAGMENT && emit->key.fs.pstipple) {
+ unsigned unit;
+
+ new_tokens = util_pstipple_create_fragment_shader(tokens, &unit, 0,
+ TGSI_FILE_INPUT);
+
+ if (new_tokens) {
+ /* Setup texture state for stipple */
+ emit->sampler_target[unit] = TGSI_TEXTURE_2D;
+ emit->key.tex[unit].swizzle_r = TGSI_SWIZZLE_X;
+ emit->key.tex[unit].swizzle_g = TGSI_SWIZZLE_Y;
+ emit->key.tex[unit].swizzle_b = TGSI_SWIZZLE_Z;
+ emit->key.tex[unit].swizzle_a = TGSI_SWIZZLE_W;
+
+ emit->pstipple_sampler_unit = unit;
+
+ tokens = new_tokens;
+ }
+ }
+
tgsi_parse_init( &parse, tokens );
emit->internal_imm_count = 0;
done:
tgsi_parse_free( &parse );
+ if (new_tokens) {
+ tgsi_free_tokens(new_tokens);
+ }
+
return ret;
}
projects / mesa.git / blobdiff