/************************************************************************** * * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ /* * Authors: * Keith Whitwell <keith@tungstengraphics.com> */ #include "util/u_memory.h" #include "util/u_format.h" #include "util/u_math.h" #include "pipe/p_state.h" #include "translate.h" #define DRAW_DBG 0 typedef void (*fetch_func)(float *dst, const uint8_t *src, unsigned i, unsigned j); typedef void (*emit_func)(const float *attrib, void *ptr); struct translate_generic { struct translate translate; struct { enum translate_element_type type; fetch_func fetch; unsigned buffer; unsigned input_offset; unsigned instance_divisor; emit_func emit; unsigned output_offset; const uint8_t *input_ptr; unsigned input_stride; unsigned max_index; /* this value is set to -1 if this is a normal element with output_format != input_format: * in this case, u_format is used to do a full conversion * * this value is set to the format size in bytes if output_format == input_format or for 32-bit instance ids: * in this case, memcpy is used to copy this amount of bytes */ int copy_size; } attrib[PIPE_MAX_ATTRIBS]; unsigned nr_attrib; }; static struct translate_generic *translate_generic( struct translate *translate ) { return (struct translate_generic *)translate; } /** * Fetch a float[4] vertex attribute from memory, doing format/type * conversion as needed. * * This is probably needed/dupliocated elsewhere, eg format * conversion, texture sampling etc. */ #define ATTRIB( NAME, SZ, TYPE, TO ) \ static void \ emit_##NAME(const float *attrib, void *ptr) \ { \ unsigned i; \ TYPE *out = (TYPE *)ptr; \ \ for (i = 0; i < SZ; i++) { \ out[i] = TO(attrib[i]); \ } \ } #define TO_64_FLOAT(x) ((double) x) #define TO_32_FLOAT(x) (x) #define TO_8_USCALED(x) ((unsigned char) x) #define TO_16_USCALED(x) ((unsigned short) x) #define TO_32_USCALED(x) ((unsigned int) x) #define TO_8_SSCALED(x) ((char) x) #define TO_16_SSCALED(x) ((short) x) #define TO_32_SSCALED(x) ((int) x) #define TO_8_UNORM(x) ((unsigned char) (x * 255.0f)) #define TO_16_UNORM(x) ((unsigned short) (x * 65535.0f)) #define TO_32_UNORM(x) ((unsigned int) (x * 4294967295.0f)) #define TO_8_SNORM(x) ((char) (x * 127.0f)) #define TO_16_SNORM(x) ((short) (x * 32767.0f)) #define TO_32_SNORM(x) ((int) (x * 2147483647.0f)) #define TO_32_FIXED(x) ((int) (x * 65536.0f)) ATTRIB( R64G64B64A64_FLOAT, 4, double, TO_64_FLOAT ) ATTRIB( R64G64B64_FLOAT, 3, double, TO_64_FLOAT ) ATTRIB( R64G64_FLOAT, 2, double, TO_64_FLOAT ) ATTRIB( R64_FLOAT, 1, double, TO_64_FLOAT ) ATTRIB( R32G32B32A32_FLOAT, 4, float, TO_32_FLOAT ) ATTRIB( R32G32B32_FLOAT, 3, float, TO_32_FLOAT ) ATTRIB( R32G32_FLOAT, 2, float, TO_32_FLOAT ) ATTRIB( R32_FLOAT, 1, float, TO_32_FLOAT ) ATTRIB( R32G32B32A32_USCALED, 4, unsigned, TO_32_USCALED ) ATTRIB( R32G32B32_USCALED, 3, unsigned, TO_32_USCALED ) ATTRIB( R32G32_USCALED, 2, unsigned, TO_32_USCALED ) ATTRIB( R32_USCALED, 1, unsigned, TO_32_USCALED ) ATTRIB( R32G32B32A32_SSCALED, 4, int, TO_32_SSCALED ) ATTRIB( R32G32B32_SSCALED, 3, int, TO_32_SSCALED ) ATTRIB( R32G32_SSCALED, 2, int, TO_32_SSCALED ) ATTRIB( R32_SSCALED, 1, int, TO_32_SSCALED ) ATTRIB( R32G32B32A32_UNORM, 4, unsigned, TO_32_UNORM ) ATTRIB( R32G32B32_UNORM, 3, unsigned, TO_32_UNORM ) ATTRIB( R32G32_UNORM, 2, unsigned, TO_32_UNORM ) ATTRIB( R32_UNORM, 1, unsigned, TO_32_UNORM ) ATTRIB( R32G32B32A32_SNORM, 4, int, TO_32_SNORM ) ATTRIB( R32G32B32_SNORM, 3, int, TO_32_SNORM ) ATTRIB( R32G32_SNORM, 2, int, TO_32_SNORM ) ATTRIB( R32_SNORM, 1, int, TO_32_SNORM ) ATTRIB( R16G16B16A16_USCALED, 4, ushort, TO_16_USCALED ) ATTRIB( R16G16B16_USCALED, 3, ushort, TO_16_USCALED ) ATTRIB( R16G16_USCALED, 2, ushort, TO_16_USCALED ) ATTRIB( R16_USCALED, 1, ushort, TO_16_USCALED ) ATTRIB( R16G16B16A16_SSCALED, 4, short, TO_16_SSCALED ) ATTRIB( R16G16B16_SSCALED, 3, short, TO_16_SSCALED ) ATTRIB( R16G16_SSCALED, 2, short, TO_16_SSCALED ) ATTRIB( R16_SSCALED, 1, short, TO_16_SSCALED ) ATTRIB( R16G16B16A16_UNORM, 4, ushort, TO_16_UNORM ) ATTRIB( R16G16B16_UNORM, 3, ushort, TO_16_UNORM ) ATTRIB( R16G16_UNORM, 2, ushort, TO_16_UNORM ) ATTRIB( R16_UNORM, 1, ushort, TO_16_UNORM ) ATTRIB( R16G16B16A16_SNORM, 4, short, TO_16_SNORM ) ATTRIB( R16G16B16_SNORM, 3, short, TO_16_SNORM ) ATTRIB( R16G16_SNORM, 2, short, TO_16_SNORM ) ATTRIB( R16_SNORM, 1, short, TO_16_SNORM ) ATTRIB( R8G8B8A8_USCALED, 4, ubyte, TO_8_USCALED ) ATTRIB( R8G8B8_USCALED, 3, ubyte, TO_8_USCALED ) ATTRIB( R8G8_USCALED, 2, ubyte, TO_8_USCALED ) ATTRIB( R8_USCALED, 1, ubyte, TO_8_USCALED ) ATTRIB( R8G8B8A8_SSCALED, 4, char, TO_8_SSCALED ) ATTRIB( R8G8B8_SSCALED, 3, char, TO_8_SSCALED ) ATTRIB( R8G8_SSCALED, 2, char, TO_8_SSCALED ) ATTRIB( R8_SSCALED, 1, char, TO_8_SSCALED ) ATTRIB( R8G8B8A8_UNORM, 4, ubyte, TO_8_UNORM ) ATTRIB( R8G8B8_UNORM, 3, ubyte, TO_8_UNORM ) ATTRIB( R8G8_UNORM, 2, ubyte, TO_8_UNORM ) ATTRIB( R8_UNORM, 1, ubyte, TO_8_UNORM ) ATTRIB( R8G8B8A8_SNORM, 4, char, TO_8_SNORM ) ATTRIB( R8G8B8_SNORM, 3, char, TO_8_SNORM ) ATTRIB( R8G8_SNORM, 2, char, TO_8_SNORM ) ATTRIB( R8_SNORM, 1, char, TO_8_SNORM ) static void emit_A8R8G8B8_UNORM( const float *attrib, void *ptr) { ubyte *out = (ubyte *)ptr; out[0] = TO_8_UNORM(attrib[3]); out[1] = TO_8_UNORM(attrib[0]); out[2] = TO_8_UNORM(attrib[1]); out[3] = TO_8_UNORM(attrib[2]); } static void emit_B8G8R8A8_UNORM( const float *attrib, void *ptr) { ubyte *out = (ubyte *)ptr; out[2] = TO_8_UNORM(attrib[0]); out[1] = TO_8_UNORM(attrib[1]); out[0] = TO_8_UNORM(attrib[2]); out[3] = TO_8_UNORM(attrib[3]); } static void emit_NULL( const float *attrib, void *ptr ) { /* do nothing is the only sensible option */ } static emit_func get_emit_func( enum pipe_format format ) { switch (format) { case PIPE_FORMAT_R64_FLOAT: return &emit_R64_FLOAT; case PIPE_FORMAT_R64G64_FLOAT: return &emit_R64G64_FLOAT; case PIPE_FORMAT_R64G64B64_FLOAT: return &emit_R64G64B64_FLOAT; case PIPE_FORMAT_R64G64B64A64_FLOAT: return &emit_R64G64B64A64_FLOAT; case PIPE_FORMAT_R32_FLOAT: return &emit_R32_FLOAT; case PIPE_FORMAT_R32G32_FLOAT: return &emit_R32G32_FLOAT; case PIPE_FORMAT_R32G32B32_FLOAT: return &emit_R32G32B32_FLOAT; case PIPE_FORMAT_R32G32B32A32_FLOAT: return &emit_R32G32B32A32_FLOAT; case PIPE_FORMAT_R32_UNORM: return &emit_R32_UNORM; case PIPE_FORMAT_R32G32_UNORM: return &emit_R32G32_UNORM; case PIPE_FORMAT_R32G32B32_UNORM: return &emit_R32G32B32_UNORM; case PIPE_FORMAT_R32G32B32A32_UNORM: return &emit_R32G32B32A32_UNORM; case PIPE_FORMAT_R32_USCALED: return &emit_R32_USCALED; case PIPE_FORMAT_R32G32_USCALED: return &emit_R32G32_USCALED; case PIPE_FORMAT_R32G32B32_USCALED: return &emit_R32G32B32_USCALED; case PIPE_FORMAT_R32G32B32A32_USCALED: return &emit_R32G32B32A32_USCALED; case PIPE_FORMAT_R32_SNORM: return &emit_R32_SNORM; case PIPE_FORMAT_R32G32_SNORM: return &emit_R32G32_SNORM; case PIPE_FORMAT_R32G32B32_SNORM: return &emit_R32G32B32_SNORM; case PIPE_FORMAT_R32G32B32A32_SNORM: return &emit_R32G32B32A32_SNORM; case PIPE_FORMAT_R32_SSCALED: return &emit_R32_SSCALED; case PIPE_FORMAT_R32G32_SSCALED: return &emit_R32G32_SSCALED; case PIPE_FORMAT_R32G32B32_SSCALED: return &emit_R32G32B32_SSCALED; case PIPE_FORMAT_R32G32B32A32_SSCALED: return &emit_R32G32B32A32_SSCALED; case PIPE_FORMAT_R16_UNORM: return &emit_R16_UNORM; case PIPE_FORMAT_R16G16_UNORM: return &emit_R16G16_UNORM; case PIPE_FORMAT_R16G16B16_UNORM: return &emit_R16G16B16_UNORM; case PIPE_FORMAT_R16G16B16A16_UNORM: return &emit_R16G16B16A16_UNORM; case PIPE_FORMAT_R16_USCALED: return &emit_R16_USCALED; case PIPE_FORMAT_R16G16_USCALED: return &emit_R16G16_USCALED; case PIPE_FORMAT_R16G16B16_USCALED: return &emit_R16G16B16_USCALED; case PIPE_FORMAT_R16G16B16A16_USCALED: return &emit_R16G16B16A16_USCALED; case PIPE_FORMAT_R16_SNORM: return &emit_R16_SNORM; case PIPE_FORMAT_R16G16_SNORM: return &emit_R16G16_SNORM; case PIPE_FORMAT_R16G16B16_SNORM: return &emit_R16G16B16_SNORM; case PIPE_FORMAT_R16G16B16A16_SNORM: return &emit_R16G16B16A16_SNORM; case PIPE_FORMAT_R16_SSCALED: return &emit_R16_SSCALED; case PIPE_FORMAT_R16G16_SSCALED: return &emit_R16G16_SSCALED; case PIPE_FORMAT_R16G16B16_SSCALED: return &emit_R16G16B16_SSCALED; case PIPE_FORMAT_R16G16B16A16_SSCALED: return &emit_R16G16B16A16_SSCALED; case PIPE_FORMAT_R8_UNORM: return &emit_R8_UNORM; case PIPE_FORMAT_R8G8_UNORM: return &emit_R8G8_UNORM; case PIPE_FORMAT_R8G8B8_UNORM: return &emit_R8G8B8_UNORM; case PIPE_FORMAT_R8G8B8A8_UNORM: return &emit_R8G8B8A8_UNORM; case PIPE_FORMAT_R8_USCALED: return &emit_R8_USCALED; case PIPE_FORMAT_R8G8_USCALED: return &emit_R8G8_USCALED; case PIPE_FORMAT_R8G8B8_USCALED: return &emit_R8G8B8_USCALED; case PIPE_FORMAT_R8G8B8A8_USCALED: return &emit_R8G8B8A8_USCALED; case PIPE_FORMAT_R8_SNORM: return &emit_R8_SNORM; case PIPE_FORMAT_R8G8_SNORM: return &emit_R8G8_SNORM; case PIPE_FORMAT_R8G8B8_SNORM: return &emit_R8G8B8_SNORM; case PIPE_FORMAT_R8G8B8A8_SNORM: return &emit_R8G8B8A8_SNORM; case PIPE_FORMAT_R8_SSCALED: return &emit_R8_SSCALED; case PIPE_FORMAT_R8G8_SSCALED: return &emit_R8G8_SSCALED; case PIPE_FORMAT_R8G8B8_SSCALED: return &emit_R8G8B8_SSCALED; case PIPE_FORMAT_R8G8B8A8_SSCALED: return &emit_R8G8B8A8_SSCALED; case PIPE_FORMAT_B8G8R8A8_UNORM: return &emit_B8G8R8A8_UNORM; case PIPE_FORMAT_A8R8G8B8_UNORM: return &emit_A8R8G8B8_UNORM; default: assert(0); return &emit_NULL; } } static ALWAYS_INLINE void PIPE_CDECL generic_run_one( struct translate_generic *tg, unsigned elt, unsigned instance_id, void *vert ) { unsigned nr_attrs = tg->nr_attrib; unsigned attr; for (attr = 0; attr < nr_attrs; attr++) { float data[4]; uint8_t *dst = (uint8_t *)vert + tg->attrib[attr].output_offset; if (tg->attrib[attr].type == TRANSLATE_ELEMENT_NORMAL) { const uint8_t *src; unsigned index; int copy_size; if (tg->attrib[attr].instance_divisor) { index = instance_id / tg->attrib[attr].instance_divisor; /* XXX we need to clamp the index here too, but to a * per-array max value, not the draw->pt.max_index value * that's being given to us via translate->set_buffer(). */ } else { index = elt; /* clamp to avoid going out of bounds */ index = MIN2(index, tg->attrib[attr].max_index); } src = tg->attrib[attr].input_ptr + tg->attrib[attr].input_stride * index; copy_size = tg->attrib[attr].copy_size; if(likely(copy_size >= 0)) memcpy(dst, src, copy_size); else { tg->attrib[attr].fetch( data, src, 0, 0 ); if (0) debug_printf("Fetch linear attr %d from %p stride %d index %d: " " %f, %f, %f, %f \n", attr, tg->attrib[attr].input_ptr, tg->attrib[attr].input_stride, index, data[0], data[1],data[2], data[3]); tg->attrib[attr].emit( data, dst ); } } else { if(likely(tg->attrib[attr].copy_size >= 0)) memcpy(data, &instance_id, 4); else { data[0] = (float)instance_id; tg->attrib[attr].emit( data, dst ); } } } } /** * Fetch vertex attributes for 'count' vertices. */ static void PIPE_CDECL generic_run_elts( struct translate *translate, const unsigned *elts, unsigned count, unsigned instance_id, void *output_buffer ) { struct translate_generic *tg = translate_generic(translate); char *vert = output_buffer; unsigned i; for (i = 0; i < count; i++) { generic_run_one(tg, *elts++, instance_id, vert); vert += tg->translate.key.output_stride; } } static void PIPE_CDECL generic_run_elts16( struct translate *translate, const uint16_t *elts, unsigned count, unsigned instance_id, void *output_buffer ) { struct translate_generic *tg = translate_generic(translate); char *vert = output_buffer; unsigned i; for (i = 0; i < count; i++) { generic_run_one(tg, *elts++, instance_id, vert); vert += tg->translate.key.output_stride; } } static void PIPE_CDECL generic_run_elts8( struct translate *translate, const uint8_t *elts, unsigned count, unsigned instance_id, void *output_buffer ) { struct translate_generic *tg = translate_generic(translate); char *vert = output_buffer; unsigned i; for (i = 0; i < count; i++) { generic_run_one(tg, *elts++, instance_id, vert); vert += tg->translate.key.output_stride; } } static void PIPE_CDECL generic_run( struct translate *translate, unsigned start, unsigned count, unsigned instance_id, void *output_buffer ) { struct translate_generic *tg = translate_generic(translate); char *vert = output_buffer; unsigned i; for (i = 0; i < count; i++) { generic_run_one(tg, start + i, instance_id, vert); vert += tg->translate.key.output_stride; } } static void generic_set_buffer( struct translate *translate, unsigned buf, const void *ptr, unsigned stride, unsigned max_index ) { struct translate_generic *tg = translate_generic(translate); unsigned i; for (i = 0; i < tg->nr_attrib; i++) { if (tg->attrib[i].buffer == buf) { tg->attrib[i].input_ptr = ((const uint8_t *)ptr + tg->attrib[i].input_offset); tg->attrib[i].input_stride = stride; tg->attrib[i].max_index = max_index; } } } static void generic_release( struct translate *translate ) { /* Refcount? */ FREE(translate); } struct translate *translate_generic_create( const struct translate_key *key ) { struct translate_generic *tg = CALLOC_STRUCT(translate_generic); unsigned i; if (tg == NULL) return NULL; tg->translate.key = *key; tg->translate.release = generic_release; tg->translate.set_buffer = generic_set_buffer; tg->translate.run_elts = generic_run_elts; tg->translate.run_elts16 = generic_run_elts16; tg->translate.run_elts8 = generic_run_elts8; tg->translate.run = generic_run; for (i = 0; i < key->nr_elements; i++) { const struct util_format_description *format_desc = util_format_description(key->element[i].input_format); assert(format_desc); assert(format_desc->fetch_rgba_float); tg->attrib[i].type = key->element[i].type; tg->attrib[i].fetch = format_desc->fetch_rgba_float; tg->attrib[i].buffer = key->element[i].input_buffer; tg->attrib[i].input_offset = key->element[i].input_offset; tg->attrib[i].instance_divisor = key->element[i].instance_divisor; tg->attrib[i].output_offset = key->element[i].output_offset; tg->attrib[i].copy_size = -1; if (tg->attrib[i].type == TRANSLATE_ELEMENT_INSTANCE_ID) { if(key->element[i].output_format == PIPE_FORMAT_R32_USCALED || key->element[i].output_format == PIPE_FORMAT_R32_SSCALED) tg->attrib[i].copy_size = 4; } else { if(key->element[i].input_format == key->element[i].output_format && format_desc->block.width == 1 && format_desc->block.height == 1 && !(format_desc->block.bits & 7)) tg->attrib[i].copy_size = format_desc->block.bits >> 3; } if(tg->attrib[i].copy_size < 0) tg->attrib[i].emit = get_emit_func(key->element[i].output_format); else tg->attrib[i].emit = NULL; } tg->nr_attrib = key->nr_elements; return &tg->translate; } boolean translate_generic_is_output_format_supported(enum pipe_format format) { switch(format) { case PIPE_FORMAT_R64G64B64A64_FLOAT: return TRUE; case PIPE_FORMAT_R64G64B64_FLOAT: return TRUE; case PIPE_FORMAT_R64G64_FLOAT: return TRUE; case PIPE_FORMAT_R64_FLOAT: return TRUE; case PIPE_FORMAT_R32G32B32A32_FLOAT: return TRUE; case PIPE_FORMAT_R32G32B32_FLOAT: return TRUE; case PIPE_FORMAT_R32G32_FLOAT: return TRUE; case PIPE_FORMAT_R32_FLOAT: return TRUE; case PIPE_FORMAT_R32G32B32A32_USCALED: return TRUE; case PIPE_FORMAT_R32G32B32_USCALED: return TRUE; case PIPE_FORMAT_R32G32_USCALED: return TRUE; case PIPE_FORMAT_R32_USCALED: return TRUE; case PIPE_FORMAT_R32G32B32A32_SSCALED: return TRUE; case PIPE_FORMAT_R32G32B32_SSCALED: return TRUE; case PIPE_FORMAT_R32G32_SSCALED: return TRUE; case PIPE_FORMAT_R32_SSCALED: return TRUE; case PIPE_FORMAT_R32G32B32A32_UNORM: return TRUE; case PIPE_FORMAT_R32G32B32_UNORM: return TRUE; case PIPE_FORMAT_R32G32_UNORM: return TRUE; case PIPE_FORMAT_R32_UNORM: return TRUE; case PIPE_FORMAT_R32G32B32A32_SNORM: return TRUE; case PIPE_FORMAT_R32G32B32_SNORM: return TRUE; case PIPE_FORMAT_R32G32_SNORM: return TRUE; case PIPE_FORMAT_R32_SNORM: return TRUE; case PIPE_FORMAT_R16G16B16A16_USCALED: return TRUE; case PIPE_FORMAT_R16G16B16_USCALED: return TRUE; case PIPE_FORMAT_R16G16_USCALED: return TRUE; case PIPE_FORMAT_R16_USCALED: return TRUE; case PIPE_FORMAT_R16G16B16A16_SSCALED: return TRUE; case PIPE_FORMAT_R16G16B16_SSCALED: return TRUE; case PIPE_FORMAT_R16G16_SSCALED: return TRUE; case PIPE_FORMAT_R16_SSCALED: return TRUE; case PIPE_FORMAT_R16G16B16A16_UNORM: return TRUE; case PIPE_FORMAT_R16G16B16_UNORM: return TRUE; case PIPE_FORMAT_R16G16_UNORM: return TRUE; case PIPE_FORMAT_R16_UNORM: return TRUE; case PIPE_FORMAT_R16G16B16A16_SNORM: return TRUE; case PIPE_FORMAT_R16G16B16_SNORM: return TRUE; case PIPE_FORMAT_R16G16_SNORM: return TRUE; case PIPE_FORMAT_R16_SNORM: return TRUE; case PIPE_FORMAT_R8G8B8A8_USCALED: return TRUE; case PIPE_FORMAT_R8G8B8_USCALED: return TRUE; case PIPE_FORMAT_R8G8_USCALED: return TRUE; case PIPE_FORMAT_R8_USCALED: return TRUE; case PIPE_FORMAT_R8G8B8A8_SSCALED: return TRUE; case PIPE_FORMAT_R8G8B8_SSCALED: return TRUE; case PIPE_FORMAT_R8G8_SSCALED: return TRUE; case PIPE_FORMAT_R8_SSCALED: return TRUE; case PIPE_FORMAT_R8G8B8A8_UNORM: return TRUE; case PIPE_FORMAT_R8G8B8_UNORM: return TRUE; case PIPE_FORMAT_R8G8_UNORM: return TRUE; case PIPE_FORMAT_R8_UNORM: return TRUE; case PIPE_FORMAT_R8G8B8A8_SNORM: return TRUE; case PIPE_FORMAT_R8G8B8_SNORM: return TRUE; case PIPE_FORMAT_R8G8_SNORM: return TRUE; case PIPE_FORMAT_R8_SNORM: return TRUE; case PIPE_FORMAT_A8R8G8B8_UNORM: return TRUE; case PIPE_FORMAT_B8G8R8A8_UNORM: return TRUE; default: return FALSE; } }