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qb_translator_pbj.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Chung Leong <cleong@cal.berkeley.edu> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "qb.h"
#include "qb_translator_pbj.h"
static uint8_t qb_read_pbj_I08(qb_pbj_translator_context *cxt) {
uint8_t value = 0;
if(cxt->pbj_data_end - cxt->pbj_data >= 1) {
value = *((uint8_t *) cxt->pbj_data);
cxt->pbj_data += 1;
}
return value;
}
static uint16_t qb_read_pbj_I16(qb_pbj_translator_context *cxt) {
uint16_t value = 0;
if(cxt->pbj_data_end - cxt->pbj_data >= 2) {
value = SWAP_LE_I16(*((uint16_t *) cxt->pbj_data));
cxt->pbj_data += 2;
}
return value;
}
static uint32_t qb_read_pbj_I32(qb_pbj_translator_context *cxt) {
uint32_t value = 0;
if(cxt->pbj_data_end - cxt->pbj_data >= 4) {
value = SWAP_LE_I32(*((uint32_t *) cxt->pbj_data));
cxt->pbj_data += 4;
}
return value;
}
static float32_t qb_read_pbj_F32(qb_pbj_translator_context *cxt) {
float32_t value = 0.0f;
if(cxt->pbj_data_end - cxt->pbj_data >= 4) {
uint32_t int_value = SWAP_BE_I32(*((uint32_t *) cxt->pbj_data));
value = *((float32_t *) &int_value);
cxt->pbj_data += 4;
}
return value;
}
static const char * qb_read_pbj_string(qb_pbj_translator_context *cxt, uint32_t *p_length) {
const char *value = "";
if(p_length) {
uint16_t len = qb_read_pbj_I16(cxt);
if(cxt->pbj_data_end - cxt->pbj_data >= len) {
value = (const char *) cxt->pbj_data;
*p_length = len;
} else {
*p_length = 0;
}
cxt->pbj_data += len;
} else {
const char *start = (const char *) cxt->pbj_data;
while(cxt->pbj_data < cxt->pbj_data_end) {
if(*cxt->pbj_data == '\0') {
value = start;
cxt->pbj_data++;
break;
}
cxt->pbj_data++;
}
}
return value;
}
static qb_pbj_texture * qb_find_pbj_texture_by_id(qb_pbj_translator_context *cxt, uint32_t image_id) {
uint32_t i;
for(i = 0; i < cxt->texture_count; i++) {
qb_pbj_texture *texture = &cxt->textures[i];
if(texture->image_id == image_id) {
return texture;
}
}
return NULL;
}
static void qb_read_pbj_value(qb_pbj_translator_context *cxt, uint32_t type, qb_pbj_value *value) {
uint32_t i;
value->type = type;
switch(type) {
case PBJ_TYPE_FLOAT: {
value->float1 = qb_read_pbj_F32(cxt);
} break;
case PBJ_TYPE_FLOAT2: {
for(i = 0; i < 2; i++) {
value->float2[i] = qb_read_pbj_F32(cxt);
}
} break;
case PBJ_TYPE_FLOAT3: {
for(i = 0; i < 3; i++) {
value->float3[i] = qb_read_pbj_F32(cxt);
}
} break;
case PBJ_TYPE_FLOAT4: {
for(i = 0; i < 4; i++) {
value->float4[i] = qb_read_pbj_F32(cxt);
}
} break;
case PBJ_TYPE_FLOAT2X2: {
for(i = 0; i < 4; i++) {
value->float2x2[i] = qb_read_pbj_F32(cxt);
}
} break;
case PBJ_TYPE_FLOAT3X3: {
for(i = 0; i < 9; i++) {
value->float3x3[i] = qb_read_pbj_F32(cxt);
}
} break;
case PBJ_TYPE_FLOAT4X4: {
for(i = 0; i < 16; i++) {
value->float4x4[i] = qb_read_pbj_F32(cxt);
}
} break;
case PBJ_TYPE_BOOL:
case PBJ_TYPE_INT: {
value->int1 = qb_read_pbj_I16(cxt);
} break;
case PBJ_TYPE_BOOL2:
case PBJ_TYPE_INT2: {
for(i = 0; i < 2; i++) {
value->int2[i] = qb_read_pbj_I16(cxt);
}
} break;
case PBJ_TYPE_BOOL3:
case PBJ_TYPE_INT3: {
for(i = 0; i < 3; i++) {
value->int3[i] = qb_read_pbj_I16(cxt);
}
} break;
case PBJ_TYPE_BOOL4:
case PBJ_TYPE_INT4: {
for(i = 0; i < 4; i++) {
value->int4[i] = qb_read_pbj_I16(cxt);
}
} break;
case PBJ_TYPE_STRING: {
value->string = qb_read_pbj_string(cxt, NULL);
} break;
}
}
static qb_pbj_texture * qb_find_pbj_texture(qb_pbj_translator_context *cxt, const char *name) {
uint32_t i;
for(i = 0; i < cxt->texture_count; i++) {
qb_pbj_texture *texture = &cxt->textures[i];
if(strcmp(texture->name, name) == 0) {
return texture;
}
}
return NULL;
}
static qb_pbj_channel_id qb_get_pbj_channel_id(qb_pbj_translator_context *cxt, qb_pbj_channel_id *channels, uint32_t channel_count) {
switch(channel_count) {
case 1: return channels[0];
case 2: {
if(channels[0] == PBJ_CHANNEL_R && channels[1] == PBJ_CHANNEL_G) {
return PBJ_CHANNEL_RG;
} else if(channels[0] == PBJ_CHANNEL_G && channels[1] == PBJ_CHANNEL_B) {
return PBJ_CHANNEL_GB;
} else if(channels[0] == PBJ_CHANNEL_B && channels[1] == PBJ_CHANNEL_A) {
return PBJ_CHANNEL_BA;
}
} break;
case 3: {
if(channels[0] == PBJ_CHANNEL_R && channels[1] == PBJ_CHANNEL_G && channels[2] == PBJ_CHANNEL_B) {
return PBJ_CHANNEL_RGB;
} else if(channels[0] == PBJ_CHANNEL_G && channels[1] == PBJ_CHANNEL_B && channels[2] == PBJ_CHANNEL_A) {
return PBJ_CHANNEL_GBA;
}
} break;
case 4: {
if(channels[0] == PBJ_CHANNEL_R && channels[1] == PBJ_CHANNEL_G && channels[2] == PBJ_CHANNEL_B && channels[3] == PBJ_CHANNEL_A) {
return PBJ_CHANNEL_RGBA;
}
} break;
}
return PBJ_CHANNEL_NOT_CONTINUOUS;
}
static uint32_t qb_get_pbj_channel_count(qb_pbj_translator_context *cxt, qb_pbj_channel_id channel_id) {
switch(channel_id) {
case PBJ_CHANNEL_RG:
case PBJ_CHANNEL_GB:
case PBJ_CHANNEL_BA: return 2;
case PBJ_CHANNEL_RGB:
case PBJ_CHANNEL_GBA: return 3;
case PBJ_CHANNEL_RGBA: return 4;
default: break;
}
return 1;
}
static qb_pbj_channel_id qb_get_first_pbj_channel(qb_pbj_translator_context *cxt, qb_pbj_channel_id channel_id) {
switch(channel_id) {
case PBJ_CHANNEL_RG:
case PBJ_CHANNEL_RGB:
case PBJ_CHANNEL_RGBA: return PBJ_CHANNEL_R;
case PBJ_CHANNEL_GB:
case PBJ_CHANNEL_GBA: return PBJ_CHANNEL_G;
case PBJ_CHANNEL_BA: return PBJ_CHANNEL_B;
default: break;
}
return channel_id;
}
static uint32_t qb_get_pbj_channel_offset(qb_pbj_translator_context *cxt, qb_pbj_channel_id parent_channel_id, qb_pbj_channel_id channel_id) {
switch(parent_channel_id) {
case PBJ_CHANNEL_RGBA: {
switch(channel_id) {
case PBJ_CHANNEL_R:
case PBJ_CHANNEL_RG:
case PBJ_CHANNEL_RGB: return 0;
case PBJ_CHANNEL_G:
case PBJ_CHANNEL_GB:
case PBJ_CHANNEL_GBA: return 1;
case PBJ_CHANNEL_B:
case PBJ_CHANNEL_BA: return 2;
case PBJ_CHANNEL_A: return 3;
default: break;
}
} break;
case PBJ_CHANNEL_GBA: {
switch(channel_id) {
case PBJ_CHANNEL_G:
case PBJ_CHANNEL_GB:
case PBJ_CHANNEL_GBA: return 0;
case PBJ_CHANNEL_B:
case PBJ_CHANNEL_BA: return 1;
case PBJ_CHANNEL_A: return 2;
default: break;
}
} break;
case PBJ_CHANNEL_RGB: {
switch(channel_id) {
case PBJ_CHANNEL_R:
case PBJ_CHANNEL_RG: return 0;
case PBJ_CHANNEL_G:
case PBJ_CHANNEL_GB: return 1;
case PBJ_CHANNEL_B: return 2;
default: break;
}
} break;
case PBJ_CHANNEL_BA: {
switch(channel_id) {
case PBJ_CHANNEL_B: return 0;
case PBJ_CHANNEL_A: return 1;
default: break;
}
} break;
case PBJ_CHANNEL_GB: {
switch(channel_id) {
case PBJ_CHANNEL_G: return 0;
case PBJ_CHANNEL_B: return 1;
default: break;
}
} break;
case PBJ_CHANNEL_RG: {
switch(channel_id) {
case PBJ_CHANNEL_R: return 0;
case PBJ_CHANNEL_G: return 1;
default: break;
}
} break;
default: {
} break;
}
return -1;
}
static uint32_t qb_get_pbj_channel_mask(qb_pbj_translator_context *cxt, qb_pbj_channel_id *channels, uint32_t channel_count) {
qb_pbj_channel_id first_channel = PBJ_CHANNEL_A;
uint32_t mask = 0;
uint32_t i;
for(i = 0; i < channel_count; i++) {
qb_pbj_channel_id channel = channels[i];
if(channel < first_channel) {
first_channel = channel;
}
}
for(i = 0; i < channel_count; i++) {
qb_pbj_channel_id channel = channels[i];
mask |= (channel - first_channel) << (i * 3);
}
return mask;
}
static qb_pbj_channel_id qb_get_pbj_channel_extent(qb_pbj_translator_context *cxt, qb_pbj_channel_id *channels, uint32_t channel_count) {
qb_pbj_channel_id start = PBJ_CHANNEL_A;
qb_pbj_channel_id end = PBJ_CHANNEL_R;
uint32_t i, width;
for(i = 0; i < channel_count; i++) {
qb_pbj_channel_id channel = channels[i];
if(channel < start) {
start = channel;
} else if(channel > end) {
end = channel;
}
}
width = start - end + 1;
if(width == 1) {
return start;
} else if(width == 2) {
switch(start) {
case PBJ_CHANNEL_R: return PBJ_CHANNEL_RG;
case PBJ_CHANNEL_G: return PBJ_CHANNEL_GB;
case PBJ_CHANNEL_B: return PBJ_CHANNEL_BA;
default: break;
}
} else if(width == 3) {
switch(start) {
case PBJ_CHANNEL_R: return PBJ_CHANNEL_RGB;
case PBJ_CHANNEL_G: return PBJ_CHANNEL_GBA;
default: break;
}
}
return PBJ_CHANNEL_RGBA;
}
static void qb_set_pbj_destination_channels(qb_pbj_translator_context *cxt, qb_pbj_address *address, uint32_t channel_mask, uint32_t dimension) {
// dimension is used only if no destination channels are selected
// otherwise dimension is pertinent only to the source
if(channel_mask) {
qb_pbj_channel_id channels[4];
qb_pbj_channel_id channel;
uint32_t bit, channel_count = 0;
for(bit = 0x08, channel = 0; channel < 4; channel++, bit >>= 1) {
if(channel_mask & bit) {
channels[channel_count++] = channel;
}
}
address->dimension = 1;
address->channel_id = qb_get_pbj_channel_id(cxt, channels, channel_count);
address->channel_count = channel_count;
if(address->channel_id == PBJ_CHANNEL_NOT_CONTINUOUS) {
address->channel_id = qb_get_pbj_channel_extent(cxt, channels, channel_count);
address->channel_mask = qb_get_pbj_channel_mask(cxt, channels, channel_count);
} else {
address->channel_mask = INVALID_INDEX;
}
} else {
address->dimension = dimension;
address->channel_mask = INVALID_INDEX;
address->channel_id = PBJ_CHANNEL_MATRIX;
}
}
static void qb_set_pbj_source_channels(qb_pbj_translator_context *cxt, qb_pbj_address *address, uint32_t channel_swizzle, uint32_t channel_count, uint32_t dimension) {
if(dimension == 1) {
qb_pbj_channel_id channels[4];
qb_pbj_channel_id channel;
uint32_t i;
for(i = 0; i < channel_count; i++) {
channel = (channel_swizzle >> ((3 - i) * 2)) & 0x03;
channels[i] = channel;
}
address->dimension = 1;
address->channel_id = qb_get_pbj_channel_id(cxt, channels, channel_count);
address->channel_count = channel_count;
if(address->channel_id == PBJ_CHANNEL_NOT_CONTINUOUS) {
address->channel_id = qb_get_pbj_channel_extent(cxt, channels, channel_count);
address->channel_mask = qb_get_pbj_channel_mask(cxt, channels, channel_count);
} else {
address->channel_mask = INVALID_INDEX;
}
} else {
address->dimension = dimension;
address->channel_mask = INVALID_INDEX;
address->channel_id = PBJ_CHANNEL_MATRIX;
}
}
static int32_t qb_match_pbj_addresses(qb_pbj_translator_context *cxt, qb_pbj_address *reg1_address, qb_pbj_address *reg2_address) {
return (reg1_address->register_id == reg2_address->register_id && reg1_address->dimension == reg2_address->dimension
&& reg1_address->channel_id == reg2_address->channel_id && reg1_address->channel_mask == reg2_address->channel_mask);
}
typedef struct qb_pbj_op_info {
qb_pbj_opcode opcode;
qb_pbj_address **src_ptr;
qb_pbj_address **dst_ptr;
} qb_pbj_op_info;
static uint32_t qb_find_op_sequence(qb_pbj_translator_context *cxt, qb_pbj_op_info *seq, uint32_t seq_len) {
// use Boyer-Moore-Horspool to locate the opcode sequence
uint32_t i, j, last = seq_len - 1, skip;
uint32_t bad_opcode_skip[PBJ_MAX_OPCODE + 1];
for(i = 0; i <= PBJ_MAX_OPCODE; i++) {
bad_opcode_skip[i] = seq_len;
}
for(i = 0; i < last; i++) {
bad_opcode_skip[seq[i].opcode] = last - i;
}
for(j = 0; j + last < cxt->pbj_op_count; j += skip) {
for(i = last; cxt->pbj_ops[j + i].opcode == seq[i].opcode; i--) {
if(i == 0) {
// found the opcode sequence--now verify that the addresses are correct
int32_t correct = TRUE;
for(i = 0; i < seq_len && correct; i++) {
qb_pbj_op *pop = &cxt->pbj_ops[j + i];
if(pop->opcode == PBJ_LOAD_CONSTANT) {
// check the constant
if(pop->constant.type == PBJ_TYPE_INT) {
if(pop->constant.int_value != *((int32_t *) seq[i].src_ptr)) {
correct = FALSE;
}
} else {
if(pop->constant.float_value != *((float32_t *) seq[i].src_ptr)) {
correct = FALSE;
}
}
} else {
if(seq[i].src_ptr) {
// check the source:
// if the pointer is null, set it
// if not, check that the address match
if(!*seq[i].src_ptr) {
*seq[i].src_ptr = &pop->source;
} else {
if(!qb_match_pbj_addresses(cxt, &pop->source, *seq[i].src_ptr)) {
correct = FALSE;
}
}
}
}
if(seq[i].dst_ptr) {
// check the destination--same logic
if(!*seq[i].dst_ptr) {
*seq[i].dst_ptr = &pop->destination;
} else {
if(!qb_match_pbj_addresses(cxt, &pop->destination, *seq[i].dst_ptr)) {
correct = FALSE;
}
}
}
}
return (correct) ? j : INVALID_INDEX;
}
}
skip = bad_opcode_skip[cxt->pbj_ops[j + last].opcode];
}
return INVALID_INDEX;
}
static void qb_substitute_ops(qb_pbj_translator_context *cxt) {
// look for smoothStep sequence
qb_pbj_address *x = NULL, *edge0 = NULL, *edge1 = NULL, *result = NULL;
qb_pbj_address *zero = NULL, *one = NULL, *var1 = NULL, *var2 = NULL, *var3 = NULL;
float32_t constants[4] = { 0.0, 1.0, 2.0, 3.0 };
qb_pbj_op_info smooth_step_sequence[] = {
{ PBJ_LOAD_CONSTANT, (qb_pbj_address **) &constants[0], &zero },
{ PBJ_LOAD_CONSTANT, (qb_pbj_address **) &constants[1], &one },
{ PBJ_COPY, &x, &var1 },
{ PBJ_SUBTRACT, &edge0, &var1 },
{ PBJ_COPY, &edge1, &var2 },
{ PBJ_SUBTRACT, &edge0, &var2 },
{ PBJ_RECIPROCAL, &var2, &var3 },
{ PBJ_MULTIPLY, &var3, &var1 },
{ PBJ_MAX, &zero, &var1 },
{ PBJ_MIN, &one, &var1 },
{ PBJ_LOAD_CONSTANT, (qb_pbj_address **) &constants[2], &var2 },
{ PBJ_MULTIPLY, &var1, &var2 },
{ PBJ_LOAD_CONSTANT, (qb_pbj_address **) &constants[3], &var3 },
{ PBJ_SUBTRACT, &var2, &var3 },
{ PBJ_COPY, &var1, &var2 },
{ PBJ_MULTIPLY, &var1, &var2 },
{ PBJ_MULTIPLY, &var3, &result },
};
uint32_t start_index, seq_len = sizeof(smooth_step_sequence) / sizeof(qb_pbj_op_info);
start_index = qb_find_op_sequence(cxt, smooth_step_sequence, seq_len);
if(start_index != INVALID_INDEX) {
qb_pbj_op *ss_pop = &cxt->pbj_ops[start_index];
qb_pbj_op *ss_data_pop = &cxt->pbj_ops[start_index + 1];
uint32_t i;
// change the first and second ops to smoothStep
ss_pop->opcode = PBJ_SMOOTH_STEP;
memcpy(&ss_pop->source, edge0, sizeof(qb_pbj_address));
memcpy(&ss_pop->destination, result, sizeof(qb_pbj_address));
ss_data_pop->opcode = PBJ_OP_DATA;
memcpy(&ss_data_pop->source2, edge1, sizeof(qb_pbj_address));
memcpy(&ss_data_pop->source3, x, sizeof(qb_pbj_address));
// make the other NOP
for(i = 2; i < seq_len; i++) {
qb_pbj_op *nop = &cxt->pbj_ops[start_index + i];
nop->opcode = PBJ_NOP;
}
}
}
int32_t qb_decode_pbj_binary(qb_pbj_translator_context *cxt) {
uint32_t opcode, prev_opcode, i;
cxt->pbj_data = (uint8_t *) cxt->compiler_context->external_code;
cxt->pbj_data_end = cxt->pbj_data + cxt->compiler_context->external_code_length;
while(cxt->pbj_data < cxt->pbj_data_end) {
opcode = qb_read_pbj_I08(cxt);
if(opcode <= PBJ_ALL) {
uint32_t bit_fields, channel_mask, channel_swizzle, channel_count, dimension;
qb_pbj_op *pop;
uint32_t pop_index;
if(!cxt->pbj_ops) {
// each op is 8 bytes long
uint32_t bytes_remaining = (uint32_t) (cxt->pbj_data_end - cxt->pbj_data) + 1;
uint32_t op_count = bytes_remaining / 8;
if(op_count == 0) {
return FALSE;
}
qb_attach_new_array(cxt->pool, (void **) &cxt->pbj_ops, &cxt->pbj_op_count, sizeof(qb_pbj_op), op_count);
}
pop_index = cxt->pbj_op_count;
pop = qb_enlarge_array((void **) &cxt->pbj_ops, 1);
pop->opcode = opcode;
// read the destination address
pop->destination.register_id = qb_read_pbj_I16(cxt);
bit_fields = qb_read_pbj_I08(cxt);
channel_mask = bit_fields >> 4;
channel_count = (bit_fields & 0x03) + 1;
dimension = ((bit_fields >> 2) & 0x03) + 1;
qb_set_pbj_destination_channels(cxt, &pop->destination, channel_mask, dimension);
if(opcode == PBJ_LOAD_CONSTANT) {
pop->source.channel_id = pop->source.channel_mask = pop->source.register_id = pop->source.dimension = 0;
pop->image_id = 0;
if(pop->destination.register_id & PBJ_REGISTER_INT) {
pop->constant.int_value = qb_read_pbj_I32(cxt);
pop->constant.type = PBJ_TYPE_INT;
} else {
pop->constant.float_value = qb_read_pbj_F32(cxt);
pop->constant.type = PBJ_TYPE_FLOAT;
}
pop->flags = PBJ_DESTINATION_IN_USE;
} else {
// read the source
pop->source.register_id = qb_read_pbj_I16(cxt);
channel_swizzle = qb_read_pbj_I08(cxt);
qb_set_pbj_source_channels(cxt, &pop->source, channel_swizzle, channel_count, dimension);
// read the image id (only used for sampling functions)
pop->image_id = qb_read_pbj_I08(cxt);
if(opcode == PBJ_IF) {
// push the instruction onto the conditional stack
qb_pbj_op **p_conditional_pop = qb_enlarge_array((void **) &cxt->conditionals, 1);
*p_conditional_pop = pop;
pop->destination.dimension = 0;
pop->branch_target_index = 0;
pop->flags = PBJ_SOURCE_IN_USE;
} else if(opcode == PBJ_ELSE || opcode == PBJ_END_IF) {
// update the branch target index of the op at the top of the stack
qb_pbj_op *related_pop;
#ifdef ZEND_DEBUG
if(cxt->conditional_count == 0) {
qb_debug_abort("unexpected opcode: %02x", opcode);
}
#endif
related_pop = cxt->conditionals[cxt->conditional_count - 1];
related_pop->branch_target_index = pop_index;
if(opcode == PBJ_ELSE) {
// replace the if with the else op
cxt->conditionals[cxt->conditional_count - 1] = pop;
} else {
// pop the item off
cxt->conditional_count--;
}
pop->source.dimension = 0;
pop->destination.dimension = 0;
pop->branch_target_index = 0;
pop->flags = 0;
} else if(opcode == PBJ_SELECT) {
// put the on-true and on-false sources in the next op
qb_pbj_op *data_pop = qb_enlarge_array((void **) &cxt->pbj_ops, 1);
data_pop->opcode = PBJ_OP_DATA;
data_pop->source2.register_id = qb_read_pbj_I16(cxt);
channel_swizzle = qb_read_pbj_I08(cxt);
bit_fields = qb_read_pbj_I08(cxt);
channel_count = (bit_fields >> 6) + 1;
qb_set_pbj_source_channels(cxt, &data_pop->source2, channel_swizzle, channel_count, dimension);
data_pop->source3.register_id = qb_read_pbj_I16(cxt);
channel_swizzle = qb_read_pbj_I08(cxt);
bit_fields = qb_read_pbj_I08(cxt);
channel_count = (bit_fields >> 6) + 1;
qb_set_pbj_source_channels(cxt, &data_pop->source3, channel_swizzle, channel_count, dimension);
data_pop->flags = PBJ_SOURCE_IN_USE | PBJ_DESTINATION_IN_USE;
pop->flags = PBJ_SOURCE_IN_USE | PBJ_DESTINATION_IN_USE;
} else if(opcode == PBJ_SAMPLE_BILINEAR || opcode == PBJ_SAMPLE_NEAREST) {
pop->flags = PBJ_IMAGE_ID_IN_USE | PBJ_SOURCE_IN_USE | PBJ_DESTINATION_IN_USE;
} else {
pop->flags = PBJ_SOURCE_IN_USE | PBJ_DESTINATION_IN_USE;
}
}
} else if(opcode == PBJ_KERNEL_METADATA || opcode == PBJ_PARAMETER_METADATA) {
uint8_t value_type;
const char *value_name;
qb_pbj_parameter *last_parameter;
qb_pbj_value *value = NULL, tmp;
value_type = qb_read_pbj_I08(cxt);
value_name = qb_read_pbj_string(cxt, NULL);
if(opcode == PBJ_PARAMETER_METADATA && cxt->parameter_count > 0) {
last_parameter = &cxt->parameters[cxt->parameter_count - 1];
if(strcmp(value_name, "minValue") == 0) {
value = &last_parameter->min_value;
} else if(strcmp(value_name, "maxValue") == 0) {
value = &last_parameter->max_value;
} else if(strcmp(value_name, "defaultValue") == 0) {
value = &last_parameter->default_value;
}
}
if(!value) {
value = &tmp;
}
qb_read_pbj_value(cxt, value_type, value);
if(opcode == PBJ_PARAMETER_METADATA && value_type == PBJ_TYPE_STRING) {
if(strcmp(value_name, "parameterType") == 0) {
last_parameter->parameter_type = value->string;
} else if(strcmp(value_name, "inputSizeName") == 0) {
last_parameter->input_size_name = value->string;
} else if(strcmp(value_name, "description") == 0) {
last_parameter->description = value->string;
} else if(strcmp(value_name, "displayName") == 0) {
last_parameter->display_name = value->string;
} else if(strcmp(value_name, "parameterType") == 0) {
last_parameter->parameter_type = value->string;
}
} else if(opcode == PBJ_KERNEL_METADATA) {
if(strcmp(value_name, "description") == 0) {
cxt->description = value->string;
} else if(strcmp(value_name, "vendor") == 0) {
cxt->vendor = value->string;
} else if(strcmp(value_name, "displayName") == 0) {
cxt->display_name = value->string;
} else if(strcmp(value_name, "version") == 0) {
cxt->version = value->int1;
}
}
} else if(opcode == PBJ_PARAMETER_DATA) {
qb_pbj_parameter *parameter = qb_enlarge_array((void **) &cxt->parameters, 1);
uint32_t bit_fields, dimension, channel_mask;
parameter->qualifier = qb_read_pbj_I08(cxt);
parameter->type = qb_read_pbj_I08(cxt);
parameter->destination.register_id = qb_read_pbj_I16(cxt);
bit_fields = qb_read_pbj_I08(cxt);
switch(parameter->type) {
case PBJ_TYPE_FLOAT2X2:
case PBJ_TYPE_FLOAT3X3:
case PBJ_TYPE_FLOAT4X4:
dimension = (parameter->type - PBJ_TYPE_FLOAT2X2) + 2;
channel_mask = 0;
break;
default:
dimension = 1;
channel_mask = bit_fields & 0x0F;
break;
}
qb_set_pbj_destination_channels(cxt, ¶meter->destination, channel_mask, dimension);
parameter->name = qb_read_pbj_string(cxt, NULL);
parameter->address = NULL;
parameter->parameter_type = NULL;
parameter->description = NULL;
parameter->input_size_name = NULL;
memset(¶meter->default_value, 0, sizeof(qb_pbj_value));
memset(¶meter->min_value, 0, sizeof(qb_pbj_value));
memset(¶meter->max_value, 0, sizeof(qb_pbj_value));
} else if(opcode == PBJ_TEXTURE_DATA) {
qb_pbj_texture *texture = qb_enlarge_array((void **) &cxt->textures, 1);
texture->image_id = qb_read_pbj_I08(cxt);
texture->channel_count = qb_read_pbj_I08(cxt);
texture->name = qb_read_pbj_string(cxt, NULL);
texture->address = NULL;
texture->input_size = NULL;
} else if(opcode == PBJ_KERNEL_NAME) {
cxt->name = qb_read_pbj_string(cxt, &cxt->name_length);
} else if(opcode == PBJ_VERSION_DATA) {
qb_read_pbj_I32(cxt);
} else {
#ifdef ZEND_DEBUG
qb_debug_abort("unknown opcode: %02x (previous opcode = %02x)", opcode, prev_opcode);
#endif
break;
}
prev_opcode = opcode;
}
// look for for sequences of ops representing smoothstep()
qb_substitute_ops(cxt);
for(i = 0; i < cxt->parameter_count; i++) {
qb_pbj_parameter *parameter = &cxt->parameters[i];
if(strcmp(parameter->name, "_OutCoord") == 0) {
cxt->out_coord = parameter;
} else if(parameter->qualifier == PBJ_PARAMETER_OUT) {
cxt->out_pixel = parameter;
} else if(parameter->input_size_name) {
qb_pbj_texture *texture = qb_find_pbj_texture(cxt, parameter->input_size_name);
if(texture) {
texture->input_size = parameter;
}
}
}
if(!cxt->out_pixel || !cxt->out_coord || cxt->conditional_count > 0) {
qb_report_corrupted_pbj_exception(cxt->compiler_context->line_id);
return FALSE;
}
if(cxt->out_pixel->type != PBJ_TYPE_FLOAT3 && cxt->out_pixel->type != PBJ_TYPE_FLOAT4) {
qb_report_unsupported_pbj_exception(cxt->compiler_context->line_id);
return FALSE;
}
return TRUE;
}
static qb_pbj_register * qb_get_pbj_register(qb_pbj_translator_context *cxt, qb_pbj_address *reg_address) {
if(reg_address->register_id & PBJ_REGISTER_INT) {
return &cxt->int_registers[reg_address->register_id & ~PBJ_REGISTER_INT];
} else {
return &cxt->float_registers[reg_address->register_id];
}
}
static int32_t qb_is_image(qb_pbj_translator_context *cxt, qb_address *address, uint32_t channel_count) {
if(address && address->type == QB_TYPE_F32 && address->dimension_count == 3) {
if(HAS_CONSTANT_DIMENSION(address, -1) && DIMENSION(address, -1) == channel_count) {
return TRUE;
}
}
return FALSE;
}
static qb_variable * qb_find_argument(qb_pbj_translator_context *cxt, const char *name) {
uint32_t i;
for(i = 0; i < cxt->compiler_context->argument_count; i++) {
qb_variable *qvar = cxt->compiler_context->variables[i];
if(strcmp(qvar->name, name) == 0) {
return qvar;
}
}
return NULL;
}
static qb_variable * qb_find_input(qb_pbj_translator_context *cxt) {
qb_variable *input_var = NULL;
uint32_t i;
for(i = 0; i < cxt->compiler_context->argument_count; i++) {
qb_variable *qvar = cxt->compiler_context->variables[i];
if(!(qvar->flags & QB_VARIABLE_BY_REF)) {
if(qb_is_image(cxt, qvar->address, 4) || qb_is_image(cxt, qvar->address, 3)) {
if(!input_var) {
input_var = qvar;
} else {
// if there's more than one then the name ought to match
}
}
}
}
return input_var;
}
static qb_variable * qb_find_output(qb_pbj_translator_context *cxt) {
uint32_t i;
for(i = 0; i < cxt->compiler_context->argument_count; i++) {
qb_variable *qvar = cxt->compiler_context->variables[i];
if(qvar->flags & QB_VARIABLE_BY_REF) {
if(qb_is_image(cxt, qvar->address, 4) || qb_is_image(cxt, qvar->address, 3)) {
return qvar;
}
}
}
return NULL;
}
static qb_pbj_register * qb_create_pbj_register(qb_pbj_translator_context *cxt, qb_pbj_address *reg_address) {
qb_pbj_register **p_regs, *reg;
uint32_t id, reg_required, end, *p_count;
if(reg_address->register_id & PBJ_REGISTER_INT) {
id = reg_address->register_id & ~PBJ_REGISTER_INT;
p_regs = &cxt->int_registers;
p_count = &cxt->int_register_count;
} else {
id = reg_address->register_id;
p_regs = &cxt->float_registers;
p_count = &cxt->float_register_count;
}
// matrices could span more than one register
if(reg_address->dimension > 1) {
switch(reg_address->dimension) {
case 2: reg_required = 1; break;
case 3: reg_required = 3; break;
case 4: reg_required = 4; break;
}
} else {
reg_required = 1;
}
end = id + reg_required - 1;
if(end >= *p_count) {
uint32_t addition = end - *p_count + 1;
qb_enlarge_array((void **) p_regs, addition);
}
reg = &(*p_regs)[id];
if(reg->span < reg_required) {
reg->span = reg_required;
}
return reg;
}
static void qb_propagate_pbj_matrix_span(qb_pbj_translator_context *cxt, qb_pbj_register *reg) {
if(reg->span == 1) {
qb_address *rgba_address = qb_create_address_alias(cxt->compiler_context, reg->matrix_address);
rgba_address->dimension_count = 1;
rgba_address->array_size_addresses = rgba_address->dimension_addresses = &rgba_address->array_size_address;
reg->channel_addresses[PBJ_CHANNEL_RGBA] = rgba_address;
} else if(reg->span == 3) {
// copy vector addresses into this and subsequent registers
uint32_t i;
for(i = 0; i < reg->span; i++) {
qb_address *index_address = qb_obtain_constant_U32(cxt->compiler_context, i);
reg[i].channel_addresses[PBJ_CHANNEL_RGBA] = qb_obtain_array_element(cxt->compiler_context, reg->matrix_address, index_address, QB_ARRAY_BOUND_CHECK_NONE);
}
} else {
uint32_t i;
for(i = 0; i < reg->span; i++) {
qb_address *index_address = qb_obtain_constant_U32(cxt->compiler_context, i);
reg[i].channel_addresses[PBJ_CHANNEL_RGBA] = qb_obtain_array_element(cxt->compiler_context, reg->matrix_address, index_address, QB_ARRAY_BOUND_CHECK_NONE);
}
}
}
static qb_address * qb_create_pbj_constant(qb_compiler_context *cxt, qb_pbj_value *value) {
qb_address *address = NULL;
int32_t *int_values = NULL;
float32_t *float_values;
uint32_t dimensions[2];
uint32_t dimension_count;
uint32_t i, j;
switch(value->type) {
case PBJ_TYPE_BOOL:
case PBJ_TYPE_INT: return qb_obtain_constant_S32(cxt, value->int1);
case PBJ_TYPE_FLOAT: return qb_obtain_constant_F32(cxt, value->float1);
case PBJ_TYPE_INT2: {
dimensions[0] = 2;
dimension_count = 1;
int_values = value->int2;
} break;
case PBJ_TYPE_INT3: {
dimensions[0] = 3;
dimension_count = 1;
int_values = value->int3;
} break;
case PBJ_TYPE_INT4: {
dimensions[0] = 4;
dimension_count = 1;
int_values = value->int4;
} break;
case PBJ_TYPE_FLOAT2: {
dimensions[0] = 2;
dimension_count = 1;
float_values = value->float2;
} break;
case PBJ_TYPE_FLOAT3: {
dimensions[0] = 3;
dimension_count = 1;
float_values = value->float3;
} break;
case PBJ_TYPE_FLOAT4: {
dimensions[0] = 4;
dimension_count = 1;
float_values = value->float4;
} break;
case PBJ_TYPE_FLOAT2X2: {
dimensions[0] = 2;
dimensions[1] = 2;
dimension_count = 2;
float_values = value->float2x2;
} break;
case PBJ_TYPE_FLOAT3X3: {
dimensions[0] = 3;
dimensions[1] = 4;
dimension_count = 2;
float_values = value->float3x3;
} break;
case PBJ_TYPE_FLOAT4X4: {
dimensions[0] = 4;
dimensions[1] = 4;
dimension_count = 2;
float_values = value->float4x4;
} break;
default:
#ifdef ZEND_DEBUG
qb_debug_abort("invalid type id: %d", value->type);
#endif
}
if(int_values) {
address = qb_create_constant_array(cxt, QB_TYPE_S32, dimensions, dimension_count);
for(i = 0; i < dimensions[0]; i++) {
ARRAY(S32, address)[i] = int_values[i];
}
} else if(float_values) {
uint32_t value_count = (dimension_count == 1) ? dimensions[0] : dimensions[1] * dimensions[0];
address = qb_create_constant_array(cxt, QB_TYPE_F32, dimensions, dimension_count);
if(value_count == 12) {
// 3x3 matrices are padded
for(i = 0, j = 0; i < value_count; i++, j++) {
ARRAY(F32, address)[j] = float_values[i];
if(i == 2 || i == 5 || i == 8) {
ARRAY(F32, address)[++j] = 0;
}
}
} else {
for(i = 0; i < value_count; i++) {
ARRAY(F32, address)[i] = float_values[i];
}
}
}
return address;
}
static int32_t qb_match_pbj_parameter_dimensions(qb_pbj_translator_context *cxt, qb_pbj_parameter *parameter, qb_address *address) {
qb_pbj_address *dest = ¶meter->destination;
if(!IS_FIXED_LENGTH(address)) {
return FALSE;
}
if(dest->dimension > 1) {
if(address->dimension_count != 2) {
return FALSE;
}
if(dest->dimension == 2) {
if(!(DIMENSION(address, 1) == 2 && DIMENSION(address, 0) == 2)) {
return FALSE;
}
} else if(dest->dimension == 3) {
if(!(DIMENSION(address, 1) == 3 && DIMENSION(address, 0) == 3)) {
return FALSE;
}
} else if(dest->dimension == 4) {
if(!(DIMENSION(address, 1) == 4 && DIMENSION(address, 0) == 4)) {
return FALSE;
}
}
} else {
if(address->dimension_count > 1) {
return FALSE;
}
if(ARRAY_SIZE(address) != dest->channel_count) {
return FALSE;
}
}
return TRUE;
}
static int32_t qb_map_pbj_variables(qb_pbj_translator_context *cxt) {
uint32_t i, dimension;
qb_variable *qvar;
// find the output image
qvar = qb_find_output(cxt);
if(!qvar) {
}
cxt->output_image_address = qvar->address;
cxt->output_image_width_address = cxt->output_image_address->dimension_addresses[1];
cxt->output_image_height_address = cxt->output_image_address->dimension_addresses[0];
cxt->output_image_channel_count_address = cxt->output_image_address->dimension_addresses[2];
// variables for looping
cxt->x_address = qb_create_writable_scalar(cxt->compiler_context, QB_TYPE_U32);
cxt->y_address = qb_create_writable_scalar(cxt->compiler_context, QB_TYPE_U32);
// the current coordinate--basically x and y in float
dimension = 2;
cxt->out_coord_address = qb_create_writable_array(cxt->compiler_context, QB_TYPE_F32, &dimension, 1);
cxt->out_coord_x_address = qb_obtain_array_element(cxt->compiler_context, cxt->out_coord_address, cxt->compiler_context->zero_address, QB_ARRAY_BOUND_CHECK_NONE);
cxt->out_coord_y_address = qb_obtain_array_element(cxt->compiler_context, cxt->out_coord_address, cxt->compiler_context->one_address, QB_ARRAY_BOUND_CHECK_NONE);