diff options
Diffstat (limited to 'src/gallium/auxiliary/translate/translate_generic.c')
| -rw-r--r-- | src/gallium/auxiliary/translate/translate_generic.c | 630 |
1 files changed, 630 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/translate/translate_generic.c b/src/gallium/auxiliary/translate/translate_generic.c new file mode 100644 index 00000000000..643f6430c5a --- /dev/null +++ b/src/gallium/auxiliary/translate/translate_generic.c @@ -0,0 +1,630 @@ +/************************************************************************** + * + * 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 <[email protected]> + */ + +#include "pipe/p_util.h" +#include "pipe/p_state.h" +#include "translate.h" + + +#define DRAW_DBG 0 + +typedef void (*fetch_func)(const void *ptr, float *attrib); +typedef void (*emit_func)(const float *attrib, void *ptr); + + + +struct translate_generic { + struct translate translate; + + struct { + fetch_func fetch; + unsigned buffer; + unsigned input_offset; + + emit_func emit; + unsigned output_offset; + + char *input_ptr; + unsigned input_stride; + + } attrib[PIPE_MAX_ATTRIBS]; + + unsigned nr_attrib; + unsigned output_stride; +}; + + +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, FROM, TO ) \ +static void \ +fetch_##NAME(const void *ptr, float *attrib) \ +{ \ + const float defaults[4] = { 0,0,0,1 }; \ + int i; \ + \ + for (i = 0; i < SZ; i++) { \ + attrib[i] = FROM(i); \ + } \ + \ + for (; i < 4; i++) { \ + attrib[i] = defaults[i]; \ + } \ +} \ + \ +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 FROM_64_FLOAT(i) ((float) ((double *) ptr)[i]) +#define FROM_32_FLOAT(i) (((float *) ptr)[i]) + +#define FROM_8_USCALED(i) ((float) ((unsigned char *) ptr)[i]) +#define FROM_16_USCALED(i) ((float) ((unsigned short *) ptr)[i]) +#define FROM_32_USCALED(i) ((float) ((unsigned int *) ptr)[i]) + +#define FROM_8_SSCALED(i) ((float) ((char *) ptr)[i]) +#define FROM_16_SSCALED(i) ((float) ((short *) ptr)[i]) +#define FROM_32_SSCALED(i) ((float) ((int *) ptr)[i]) + +#define FROM_8_UNORM(i) ((float) ((unsigned char *) ptr)[i] / 255.0f) +#define FROM_16_UNORM(i) ((float) ((unsigned short *) ptr)[i] / 65535.0f) +#define FROM_32_UNORM(i) ((float) ((unsigned int *) ptr)[i] / 4294967295.0f) + +#define FROM_8_SNORM(i) ((float) ((char *) ptr)[i] / 127.0f) +#define FROM_16_SNORM(i) ((float) ((short *) ptr)[i] / 32767.0f) +#define FROM_32_SNORM(i) ((float) ((int *) ptr)[i] / 2147483647.0f) + +#define TO_64_FLOAT(f) ((double) f) +#define TO_32_FLOAT(f) (f) + +#define TO_8_USCALED(f) ((unsigned char) f) +#define TO_16_USCALED(f) ((unsigned short) f) +#define TO_32_USCALED(f) ((unsigned int) f) + +#define TO_8_SSCALED(f) ((char) f) +#define TO_16_SSCALED(f) ((short) f) +#define TO_32_SSCALED(f) ((int) f) + +#define TO_8_UNORM(f) ((unsigned char) (f * 255.0f)) +#define TO_16_UNORM(f) ((unsigned short) (f * 65535.0f)) +#define TO_32_UNORM(f) ((unsigned int) (f * 4294967295.0f)) + +#define TO_8_SNORM(f) ((char) (f * 127.0f)) +#define TO_16_SNORM(f) ((short) (f * 32767.0f)) +#define TO_32_SNORM(f) ((int) (f * 2147483647.0f)) + + + +ATTRIB( R64G64B64A64_FLOAT, 4, double, FROM_64_FLOAT, TO_64_FLOAT ) +ATTRIB( R64G64B64_FLOAT, 3, double, FROM_64_FLOAT, TO_64_FLOAT ) +ATTRIB( R64G64_FLOAT, 2, double, FROM_64_FLOAT, TO_64_FLOAT ) +ATTRIB( R64_FLOAT, 1, double, FROM_64_FLOAT, TO_64_FLOAT ) + +ATTRIB( R32G32B32A32_FLOAT, 4, float, FROM_32_FLOAT, TO_32_FLOAT ) +ATTRIB( R32G32B32_FLOAT, 3, float, FROM_32_FLOAT, TO_32_FLOAT ) +ATTRIB( R32G32_FLOAT, 2, float, FROM_32_FLOAT, TO_32_FLOAT ) +ATTRIB( R32_FLOAT, 1, float, FROM_32_FLOAT, TO_32_FLOAT ) + +ATTRIB( R32G32B32A32_USCALED, 4, unsigned, FROM_32_USCALED, TO_32_USCALED ) +ATTRIB( R32G32B32_USCALED, 3, unsigned, FROM_32_USCALED, TO_32_USCALED ) +ATTRIB( R32G32_USCALED, 2, unsigned, FROM_32_USCALED, TO_32_USCALED ) +ATTRIB( R32_USCALED, 1, unsigned, FROM_32_USCALED, TO_32_USCALED ) + +ATTRIB( R32G32B32A32_SSCALED, 4, int, FROM_32_SSCALED, TO_32_SSCALED ) +ATTRIB( R32G32B32_SSCALED, 3, int, FROM_32_SSCALED, TO_32_SSCALED ) +ATTRIB( R32G32_SSCALED, 2, int, FROM_32_SSCALED, TO_32_SSCALED ) +ATTRIB( R32_SSCALED, 1, int, FROM_32_SSCALED, TO_32_SSCALED ) + +ATTRIB( R32G32B32A32_UNORM, 4, unsigned, FROM_32_UNORM, TO_32_UNORM ) +ATTRIB( R32G32B32_UNORM, 3, unsigned, FROM_32_UNORM, TO_32_UNORM ) +ATTRIB( R32G32_UNORM, 2, unsigned, FROM_32_UNORM, TO_32_UNORM ) +ATTRIB( R32_UNORM, 1, unsigned, FROM_32_UNORM, TO_32_UNORM ) + +ATTRIB( R32G32B32A32_SNORM, 4, int, FROM_32_SNORM, TO_32_SNORM ) +ATTRIB( R32G32B32_SNORM, 3, int, FROM_32_SNORM, TO_32_SNORM ) +ATTRIB( R32G32_SNORM, 2, int, FROM_32_SNORM, TO_32_SNORM ) +ATTRIB( R32_SNORM, 1, int, FROM_32_SNORM, TO_32_SNORM ) + +ATTRIB( R16G16B16A16_USCALED, 4, ushort, FROM_16_USCALED, TO_16_USCALED ) +ATTRIB( R16G16B16_USCALED, 3, ushort, FROM_16_USCALED, TO_16_USCALED ) +ATTRIB( R16G16_USCALED, 2, ushort, FROM_16_USCALED, TO_16_USCALED ) +ATTRIB( R16_USCALED, 1, ushort, FROM_16_USCALED, TO_16_USCALED ) + +ATTRIB( R16G16B16A16_SSCALED, 4, short, FROM_16_SSCALED, TO_16_SSCALED ) +ATTRIB( R16G16B16_SSCALED, 3, short, FROM_16_SSCALED, TO_16_SSCALED ) +ATTRIB( R16G16_SSCALED, 2, short, FROM_16_SSCALED, TO_16_SSCALED ) +ATTRIB( R16_SSCALED, 1, short, FROM_16_SSCALED, TO_16_SSCALED ) + +ATTRIB( R16G16B16A16_UNORM, 4, ushort, FROM_16_UNORM, TO_16_UNORM ) +ATTRIB( R16G16B16_UNORM, 3, ushort, FROM_16_UNORM, TO_16_UNORM ) +ATTRIB( R16G16_UNORM, 2, ushort, FROM_16_UNORM, TO_16_UNORM ) +ATTRIB( R16_UNORM, 1, ushort, FROM_16_UNORM, TO_16_UNORM ) + +ATTRIB( R16G16B16A16_SNORM, 4, short, FROM_16_SNORM, TO_16_SNORM ) +ATTRIB( R16G16B16_SNORM, 3, short, FROM_16_SNORM, TO_16_SNORM ) +ATTRIB( R16G16_SNORM, 2, short, FROM_16_SNORM, TO_16_SNORM ) +ATTRIB( R16_SNORM, 1, short, FROM_16_SNORM, TO_16_SNORM ) + +ATTRIB( R8G8B8A8_USCALED, 4, ubyte, FROM_8_USCALED, TO_8_USCALED ) +ATTRIB( R8G8B8_USCALED, 3, ubyte, FROM_8_USCALED, TO_8_USCALED ) +ATTRIB( R8G8_USCALED, 2, ubyte, FROM_8_USCALED, TO_8_USCALED ) +ATTRIB( R8_USCALED, 1, ubyte, FROM_8_USCALED, TO_8_USCALED ) + +ATTRIB( R8G8B8A8_SSCALED, 4, char, FROM_8_SSCALED, TO_8_SSCALED ) +ATTRIB( R8G8B8_SSCALED, 3, char, FROM_8_SSCALED, TO_8_SSCALED ) +ATTRIB( R8G8_SSCALED, 2, char, FROM_8_SSCALED, TO_8_SSCALED ) +ATTRIB( R8_SSCALED, 1, char, FROM_8_SSCALED, TO_8_SSCALED ) + +ATTRIB( R8G8B8A8_UNORM, 4, ubyte, FROM_8_UNORM, TO_8_UNORM ) +ATTRIB( R8G8B8_UNORM, 3, ubyte, FROM_8_UNORM, TO_8_UNORM ) +ATTRIB( R8G8_UNORM, 2, ubyte, FROM_8_UNORM, TO_8_UNORM ) +ATTRIB( R8_UNORM, 1, ubyte, FROM_8_UNORM, TO_8_UNORM ) + +ATTRIB( R8G8B8A8_SNORM, 4, char, FROM_8_SNORM, TO_8_SNORM ) +ATTRIB( R8G8B8_SNORM, 3, char, FROM_8_SNORM, TO_8_SNORM ) +ATTRIB( R8G8_SNORM, 2, char, FROM_8_SNORM, TO_8_SNORM ) +ATTRIB( R8_SNORM, 1, char, FROM_8_SNORM, TO_8_SNORM ) + +ATTRIB( A8R8G8B8_UNORM, 4, ubyte, FROM_8_UNORM, TO_8_UNORM ) +//ATTRIB( R8G8B8A8_UNORM, 4, ubyte, FROM_8_UNORM, TO_8_UNORM ) + + + +static void +fetch_B8G8R8A8_UNORM(const void *ptr, float *attrib) +{ + attrib[2] = FROM_8_UNORM(0); + attrib[1] = FROM_8_UNORM(1); + attrib[0] = FROM_8_UNORM(2); + attrib[3] = FROM_8_UNORM(3); +} + +static void +emit_B8G8R8A8_UNORM( const float *attrib, void *ptr) +{ + ubyte *out = (ubyte *)ptr; + out[2] = TO_8_UNORM(out[0]); + out[1] = TO_8_UNORM(out[1]); + out[0] = TO_8_UNORM(out[2]); + out[3] = TO_8_UNORM(out[3]); +} + +static void +fetch_NULL( const void *ptr, float *attrib ) +{ + attrib[0] = 0; + attrib[1] = 0; + attrib[2] = 0; + attrib[3] = 1; +} + +static void +emit_NULL( const float *attrib, void *ptr ) +{ + /* do nothing is the only sensible option */ +} + +static fetch_func get_fetch_func( enum pipe_format format ) +{ + switch (format) { + case PIPE_FORMAT_R64_FLOAT: + return fetch_R64_FLOAT; + case PIPE_FORMAT_R64G64_FLOAT: + return fetch_R64G64_FLOAT; + case PIPE_FORMAT_R64G64B64_FLOAT: + return fetch_R64G64B64_FLOAT; + case PIPE_FORMAT_R64G64B64A64_FLOAT: + return fetch_R64G64B64A64_FLOAT; + + case PIPE_FORMAT_R32_FLOAT: + return fetch_R32_FLOAT; + case PIPE_FORMAT_R32G32_FLOAT: + return fetch_R32G32_FLOAT; + case PIPE_FORMAT_R32G32B32_FLOAT: + return fetch_R32G32B32_FLOAT; + case PIPE_FORMAT_R32G32B32A32_FLOAT: + return fetch_R32G32B32A32_FLOAT; + + case PIPE_FORMAT_R32_UNORM: + return fetch_R32_UNORM; + case PIPE_FORMAT_R32G32_UNORM: + return fetch_R32G32_UNORM; + case PIPE_FORMAT_R32G32B32_UNORM: + return fetch_R32G32B32_UNORM; + case PIPE_FORMAT_R32G32B32A32_UNORM: + return fetch_R32G32B32A32_UNORM; + + case PIPE_FORMAT_R32_USCALED: + return fetch_R32_USCALED; + case PIPE_FORMAT_R32G32_USCALED: + return fetch_R32G32_USCALED; + case PIPE_FORMAT_R32G32B32_USCALED: + return fetch_R32G32B32_USCALED; + case PIPE_FORMAT_R32G32B32A32_USCALED: + return fetch_R32G32B32A32_USCALED; + + case PIPE_FORMAT_R32_SNORM: + return fetch_R32_SNORM; + case PIPE_FORMAT_R32G32_SNORM: + return fetch_R32G32_SNORM; + case PIPE_FORMAT_R32G32B32_SNORM: + return fetch_R32G32B32_SNORM; + case PIPE_FORMAT_R32G32B32A32_SNORM: + return fetch_R32G32B32A32_SNORM; + + case PIPE_FORMAT_R32_SSCALED: + return fetch_R32_SSCALED; + case PIPE_FORMAT_R32G32_SSCALED: + return fetch_R32G32_SSCALED; + case PIPE_FORMAT_R32G32B32_SSCALED: + return fetch_R32G32B32_SSCALED; + case PIPE_FORMAT_R32G32B32A32_SSCALED: + return fetch_R32G32B32A32_SSCALED; + + case PIPE_FORMAT_R16_UNORM: + return fetch_R16_UNORM; + case PIPE_FORMAT_R16G16_UNORM: + return fetch_R16G16_UNORM; + case PIPE_FORMAT_R16G16B16_UNORM: + return fetch_R16G16B16_UNORM; + case PIPE_FORMAT_R16G16B16A16_UNORM: + return fetch_R16G16B16A16_UNORM; + + case PIPE_FORMAT_R16_USCALED: + return fetch_R16_USCALED; + case PIPE_FORMAT_R16G16_USCALED: + return fetch_R16G16_USCALED; + case PIPE_FORMAT_R16G16B16_USCALED: + return fetch_R16G16B16_USCALED; + case PIPE_FORMAT_R16G16B16A16_USCALED: + return fetch_R16G16B16A16_USCALED; + + case PIPE_FORMAT_R16_SNORM: + return fetch_R16_SNORM; + case PIPE_FORMAT_R16G16_SNORM: + return fetch_R16G16_SNORM; + case PIPE_FORMAT_R16G16B16_SNORM: + return fetch_R16G16B16_SNORM; + case PIPE_FORMAT_R16G16B16A16_SNORM: + return fetch_R16G16B16A16_SNORM; + + case PIPE_FORMAT_R16_SSCALED: + return fetch_R16_SSCALED; + case PIPE_FORMAT_R16G16_SSCALED: + return fetch_R16G16_SSCALED; + case PIPE_FORMAT_R16G16B16_SSCALED: + return fetch_R16G16B16_SSCALED; + case PIPE_FORMAT_R16G16B16A16_SSCALED: + return fetch_R16G16B16A16_SSCALED; + + case PIPE_FORMAT_R8_UNORM: + return fetch_R8_UNORM; + case PIPE_FORMAT_R8G8_UNORM: + return fetch_R8G8_UNORM; + case PIPE_FORMAT_R8G8B8_UNORM: + return fetch_R8G8B8_UNORM; + case PIPE_FORMAT_R8G8B8A8_UNORM: + return fetch_R8G8B8A8_UNORM; + + case PIPE_FORMAT_R8_USCALED: + return fetch_R8_USCALED; + case PIPE_FORMAT_R8G8_USCALED: + return fetch_R8G8_USCALED; + case PIPE_FORMAT_R8G8B8_USCALED: + return fetch_R8G8B8_USCALED; + case PIPE_FORMAT_R8G8B8A8_USCALED: + return fetch_R8G8B8A8_USCALED; + + case PIPE_FORMAT_R8_SNORM: + return fetch_R8_SNORM; + case PIPE_FORMAT_R8G8_SNORM: + return fetch_R8G8_SNORM; + case PIPE_FORMAT_R8G8B8_SNORM: + return fetch_R8G8B8_SNORM; + case PIPE_FORMAT_R8G8B8A8_SNORM: + return fetch_R8G8B8A8_SNORM; + + case PIPE_FORMAT_R8_SSCALED: + return fetch_R8_SSCALED; + case PIPE_FORMAT_R8G8_SSCALED: + return fetch_R8G8_SSCALED; + case PIPE_FORMAT_R8G8B8_SSCALED: + return fetch_R8G8B8_SSCALED; + case PIPE_FORMAT_R8G8B8A8_SSCALED: + return fetch_R8G8B8A8_SSCALED; + + case PIPE_FORMAT_A8R8G8B8_UNORM: + return fetch_A8R8G8B8_UNORM; + + case PIPE_FORMAT_B8G8R8A8_UNORM: + return fetch_B8G8R8A8_UNORM; + + default: + assert(0); + return fetch_NULL; + } +} + + + + +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_A8R8G8B8_UNORM: + return emit_A8R8G8B8_UNORM; + + case PIPE_FORMAT_B8G8R8A8_UNORM: + return emit_B8G8R8A8_UNORM; + + default: + assert(0); + return emit_NULL; + } +} + + + +/** + * Fetch vertex attributes for 'count' vertices. + */ +static void generic_run_elts( struct translate *translate, + const unsigned *elts, + unsigned count, + void *output_buffer ) +{ + struct translate_generic *tg = translate_generic(translate); + char *vert = output_buffer; + unsigned nr_attrs = tg->nr_attrib; + unsigned attr; + unsigned i; + + /* loop over vertex attributes (vertex shader inputs) + */ + for (i = 0; i < count; i++) { + unsigned elt = *elts++; + + for (attr = 0; attr < nr_attrs; attr++) { + float data[4]; + + const char *src = (tg->attrib[attr].input_ptr + + tg->attrib[attr].input_stride * elt); + + char *dst = (vert + + tg->attrib[attr].output_offset); + + tg->attrib[attr].fetch( src, data ); + tg->attrib[attr].emit( data, dst ); + } + + vert += tg->output_stride; + } +} + + + +static void generic_set_buffer( struct translate *translate, + unsigned buf, + const void *ptr, + unsigned stride ) +{ + 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 = ((char *)ptr + + tg->attrib[i].input_offset); + tg->attrib[i].input_stride = stride; + } + } +} + + +static void generic_destroy( struct translate *translate ) +{ + FREE(translate); +} + +struct translate *translate_generic_create( unsigned output_stride, + const struct translate_element *elements, + unsigned nr_elements ) +{ + struct translate_generic *tg = CALLOC_STRUCT(translate_generic); + unsigned i; + + if (tg == NULL) + return NULL; + + tg->translate.destroy = generic_destroy; + tg->translate.set_buffer = generic_set_buffer; + tg->translate.run_elts = generic_run_elts; + + for (i = 0; i < nr_elements; i++) { + tg->attrib[i].fetch = get_fetch_func(elements[i].input_format); + tg->attrib[i].buffer = elements[i].input_buffer; + tg->attrib[i].input_offset = elements[i].input_offset; + + tg->attrib[i].emit = get_emit_func(elements[i].output_format); + tg->attrib[i].output_offset = elements[i].output_offset; + } + + tg->nr_attrib = nr_elements; + + + return &tg->translate; +} |