diff options
Diffstat (limited to 'src/gallium/aux/draw/draw_vertex_fetch.c')
| -rw-r--r-- | src/gallium/aux/draw/draw_vertex_fetch.c | 510 |
1 files changed, 510 insertions, 0 deletions
diff --git a/src/gallium/aux/draw/draw_vertex_fetch.c b/src/gallium/aux/draw/draw_vertex_fetch.c new file mode 100644 index 0000000000..e13df04605 --- /dev/null +++ b/src/gallium/aux/draw/draw_vertex_fetch.c @@ -0,0 +1,510 @@ +/************************************************************************** + * + * 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 "pipe/p_util.h" +#include "pipe/p_shader_tokens.h" +#include "draw_private.h" +#include "draw_context.h" + + +#define DRAW_DBG 0 + + +/** + * 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 FETCH_ATTRIB( NAME, SZ, CVT ) \ +static void \ +fetch_##NAME(const void *ptr, float *attrib) \ +{ \ + static const float defaults[4] = { 0,0,0,1 }; \ + int i; \ + \ + for (i = 0; i < SZ; i++) { \ + attrib[i] = CVT; \ + } \ + \ + for (; i < 4; i++) { \ + attrib[i] = defaults[i]; \ + } \ +} + +#define CVT_64_FLOAT (float) ((double *) ptr)[i] +#define CVT_32_FLOAT ((float *) ptr)[i] + +#define CVT_8_USCALED (float) ((unsigned char *) ptr)[i] +#define CVT_16_USCALED (float) ((unsigned short *) ptr)[i] +#define CVT_32_USCALED (float) ((unsigned int *) ptr)[i] + +#define CVT_8_SSCALED (float) ((char *) ptr)[i] +#define CVT_16_SSCALED (float) ((short *) ptr)[i] +#define CVT_32_SSCALED (float) ((int *) ptr)[i] + +#define CVT_8_UNORM (float) ((unsigned char *) ptr)[i] / 255.0f +#define CVT_16_UNORM (float) ((unsigned short *) ptr)[i] / 65535.0f +#define CVT_32_UNORM (float) ((unsigned int *) ptr)[i] / 4294967295.0f + +#define CVT_8_SNORM (float) ((char *) ptr)[i] / 127.0f +#define CVT_16_SNORM (float) ((short *) ptr)[i] / 32767.0f +#define CVT_32_SNORM (float) ((int *) ptr)[i] / 2147483647.0f + +FETCH_ATTRIB( R64G64B64A64_FLOAT, 4, CVT_64_FLOAT ) +FETCH_ATTRIB( R64G64B64_FLOAT, 3, CVT_64_FLOAT ) +FETCH_ATTRIB( R64G64_FLOAT, 2, CVT_64_FLOAT ) +FETCH_ATTRIB( R64_FLOAT, 1, CVT_64_FLOAT ) + +FETCH_ATTRIB( R32G32B32A32_FLOAT, 4, CVT_32_FLOAT ) +FETCH_ATTRIB( R32G32B32_FLOAT, 3, CVT_32_FLOAT ) +FETCH_ATTRIB( R32G32_FLOAT, 2, CVT_32_FLOAT ) +FETCH_ATTRIB( R32_FLOAT, 1, CVT_32_FLOAT ) + +FETCH_ATTRIB( R32G32B32A32_USCALED, 4, CVT_32_USCALED ) +FETCH_ATTRIB( R32G32B32_USCALED, 3, CVT_32_USCALED ) +FETCH_ATTRIB( R32G32_USCALED, 2, CVT_32_USCALED ) +FETCH_ATTRIB( R32_USCALED, 1, CVT_32_USCALED ) + +FETCH_ATTRIB( R32G32B32A32_SSCALED, 4, CVT_32_SSCALED ) +FETCH_ATTRIB( R32G32B32_SSCALED, 3, CVT_32_SSCALED ) +FETCH_ATTRIB( R32G32_SSCALED, 2, CVT_32_SSCALED ) +FETCH_ATTRIB( R32_SSCALED, 1, CVT_32_SSCALED ) + +FETCH_ATTRIB( R32G32B32A32_UNORM, 4, CVT_32_UNORM ) +FETCH_ATTRIB( R32G32B32_UNORM, 3, CVT_32_UNORM ) +FETCH_ATTRIB( R32G32_UNORM, 2, CVT_32_UNORM ) +FETCH_ATTRIB( R32_UNORM, 1, CVT_32_UNORM ) + +FETCH_ATTRIB( R32G32B32A32_SNORM, 4, CVT_32_SNORM ) +FETCH_ATTRIB( R32G32B32_SNORM, 3, CVT_32_SNORM ) +FETCH_ATTRIB( R32G32_SNORM, 2, CVT_32_SNORM ) +FETCH_ATTRIB( R32_SNORM, 1, CVT_32_SNORM ) + +FETCH_ATTRIB( R16G16B16A16_USCALED, 4, CVT_16_USCALED ) +FETCH_ATTRIB( R16G16B16_USCALED, 3, CVT_16_USCALED ) +FETCH_ATTRIB( R16G16_USCALED, 2, CVT_16_USCALED ) +FETCH_ATTRIB( R16_USCALED, 1, CVT_16_USCALED ) + +FETCH_ATTRIB( R16G16B16A16_SSCALED, 4, CVT_16_SSCALED ) +FETCH_ATTRIB( R16G16B16_SSCALED, 3, CVT_16_SSCALED ) +FETCH_ATTRIB( R16G16_SSCALED, 2, CVT_16_SSCALED ) +FETCH_ATTRIB( R16_SSCALED, 1, CVT_16_SSCALED ) + +FETCH_ATTRIB( R16G16B16A16_UNORM, 4, CVT_16_UNORM ) +FETCH_ATTRIB( R16G16B16_UNORM, 3, CVT_16_UNORM ) +FETCH_ATTRIB( R16G16_UNORM, 2, CVT_16_UNORM ) +FETCH_ATTRIB( R16_UNORM, 1, CVT_16_UNORM ) + +FETCH_ATTRIB( R16G16B16A16_SNORM, 4, CVT_16_SNORM ) +FETCH_ATTRIB( R16G16B16_SNORM, 3, CVT_16_SNORM ) +FETCH_ATTRIB( R16G16_SNORM, 2, CVT_16_SNORM ) +FETCH_ATTRIB( R16_SNORM, 1, CVT_16_SNORM ) + +FETCH_ATTRIB( R8G8B8A8_USCALED, 4, CVT_8_USCALED ) +FETCH_ATTRIB( R8G8B8_USCALED, 3, CVT_8_USCALED ) +FETCH_ATTRIB( R8G8_USCALED, 2, CVT_8_USCALED ) +FETCH_ATTRIB( R8_USCALED, 1, CVT_8_USCALED ) + +FETCH_ATTRIB( R8G8B8A8_SSCALED, 4, CVT_8_SSCALED ) +FETCH_ATTRIB( R8G8B8_SSCALED, 3, CVT_8_SSCALED ) +FETCH_ATTRIB( R8G8_SSCALED, 2, CVT_8_SSCALED ) +FETCH_ATTRIB( R8_SSCALED, 1, CVT_8_SSCALED ) + +FETCH_ATTRIB( R8G8B8A8_UNORM, 4, CVT_8_UNORM ) +FETCH_ATTRIB( R8G8B8_UNORM, 3, CVT_8_UNORM ) +FETCH_ATTRIB( R8G8_UNORM, 2, CVT_8_UNORM ) +FETCH_ATTRIB( R8_UNORM, 1, CVT_8_UNORM ) + +FETCH_ATTRIB( R8G8B8A8_SNORM, 4, CVT_8_SNORM ) +FETCH_ATTRIB( R8G8B8_SNORM, 3, CVT_8_SNORM ) +FETCH_ATTRIB( R8G8_SNORM, 2, CVT_8_SNORM ) +FETCH_ATTRIB( R8_SNORM, 1, CVT_8_SNORM ) + +FETCH_ATTRIB( A8R8G8B8_UNORM, 4, CVT_8_UNORM ) +//FETCH_ATTRIB( R8G8B8A8_UNORM, 4, CVT_8_UNORM ) + + + +static fetch_func get_fetch_func( enum pipe_format format ) +{ +#if 0 + { + char tmp[80]; + pf_sprint_name(tmp, format); + debug_printf("%s: %s\n", __FUNCTION__, tmp); + } +#endif + + 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 0: + return NULL; /* not sure why this is needed */ + + default: + assert(0); + return NULL; + } +} + + +static void +transpose_4x4( float *out, const float *in ) +{ + /* This can be achieved in 12 sse instructions, plus the final + * stores I guess. This is probably a bit more than that - maybe + * 32 or so? + */ + out[0] = in[0]; out[1] = in[4]; out[2] = in[8]; out[3] = in[12]; + out[4] = in[1]; out[5] = in[5]; out[6] = in[9]; out[7] = in[13]; + out[8] = in[2]; out[9] = in[6]; out[10] = in[10]; out[11] = in[14]; + out[12] = in[3]; out[13] = in[7]; out[14] = in[11]; out[15] = in[15]; +} + + + +static void fetch_xyz_rgb( struct draw_context *draw, + struct tgsi_exec_machine *machine, + const unsigned *elts, + unsigned count ) +{ + const unsigned *pitch = draw->vertex_fetch.pitch; + const ubyte **src = draw->vertex_fetch.src_ptr; + int i; + + assert(count <= 4); + +// debug_printf("%s\n", __FUNCTION__); + + /* loop over vertex attributes (vertex shader inputs) + */ + + for (i = 0; i < 4; i++) { + { + const float *in = (const float *)(src[0] + elts[i] * pitch[0]); + float *out = &machine->Inputs[0].xyzw[0].f[i]; + out[0] = in[0]; + out[4] = in[1]; + out[8] = in[2]; + out[12] = 1.0f; + } + + { + const float *in = (const float *)(src[1] + elts[i] * pitch[1]); + float *out = &machine->Inputs[1].xyzw[0].f[i]; + out[0] = in[0]; + out[4] = in[1]; + out[8] = in[2]; + out[12] = 1.0f; + } + } +} + + + + +static void fetch_xyz_rgb_st( struct draw_context *draw, + struct tgsi_exec_machine *machine, + const unsigned *elts, + unsigned count ) +{ + const unsigned *pitch = draw->vertex_fetch.pitch; + const ubyte **src = draw->vertex_fetch.src_ptr; + int i; + + assert(count <= 4); + + /* loop over vertex attributes (vertex shader inputs) + */ + + for (i = 0; i < 4; i++) { + { + const float *in = (const float *)(src[0] + elts[i] * pitch[0]); + float *out = &machine->Inputs[0].xyzw[0].f[i]; + out[0] = in[0]; + out[4] = in[1]; + out[8] = in[2]; + out[12] = 1.0f; + } + + { + const float *in = (const float *)(src[1] + elts[i] * pitch[1]); + float *out = &machine->Inputs[1].xyzw[0].f[i]; + out[0] = in[0]; + out[4] = in[1]; + out[8] = in[2]; + out[12] = 1.0f; + } + + { + const float *in = (const float *)(src[2] + elts[i] * pitch[2]); + float *out = &machine->Inputs[2].xyzw[0].f[i]; + out[0] = in[0]; + out[4] = in[1]; + out[8] = 0.0f; + out[12] = 1.0f; + } + } +} + + + + +/** + * Fetch vertex attributes for 'count' vertices. + */ +static void generic_vertex_fetch( struct draw_context *draw, + struct tgsi_exec_machine *machine, + const unsigned *elts, + unsigned count ) +{ + unsigned nr_attrs = draw->vertex_fetch.nr_attrs; + unsigned attr; + + assert(count <= 4); + +// debug_printf("%s %d\n", __FUNCTION__, count); + + /* loop over vertex attributes (vertex shader inputs) + */ + for (attr = 0; attr < nr_attrs; attr++) { + + const unsigned pitch = draw->vertex_fetch.pitch[attr]; + const ubyte *src = draw->vertex_fetch.src_ptr[attr]; + const fetch_func fetch = draw->vertex_fetch.fetch[attr]; + unsigned i; + float p[4][4]; + + + /* Fetch four attributes for four vertices. + * + * Could fetch directly into AOS format, but this is meant to be + * a prototype for an sse implementation, which would have + * difficulties doing that. + */ + for (i = 0; i < count; i++) + fetch( src + elts[i] * pitch, p[i] ); + + /* Be nice and zero out any missing vertices: + */ + for ( ; i < 4; i++) + p[i][0] = p[i][1] = p[i][2] = p[i][3] = 0; + + /* Transpose/swizzle into sse-friendly format. Currently + * assuming that all vertex shader inputs are float[4], but this + * isn't true -- if the vertex shader only wants tex0.xy, we + * could optimize for that. + * + * To do so fully without codegen would probably require an + * excessive number of fetch functions, but we could at least + * minimize the transpose step: + */ + transpose_4x4( (float *)&machine->Inputs[attr].xyzw[0].f[0], (float *)p ); + } +} + + + +void draw_update_vertex_fetch( struct draw_context *draw ) +{ + unsigned nr_attrs, i; + +// debug_printf("%s\n", __FUNCTION__); + + /* this may happend during context init */ + if (!draw->vertex_shader) + return; + + nr_attrs = draw->vertex_shader->state->num_inputs; + + for (i = 0; i < nr_attrs; i++) { + unsigned buf = draw->vertex_element[i].vertex_buffer_index; + enum pipe_format format = draw->vertex_element[i].src_format; + + draw->vertex_fetch.src_ptr[i] = (const ubyte *) draw->user.vbuffer[buf] + + draw->vertex_buffer[buf].buffer_offset + + draw->vertex_element[i].src_offset; + + draw->vertex_fetch.pitch[i] = draw->vertex_buffer[buf].pitch; + draw->vertex_fetch.fetch[i] = get_fetch_func( format ); + } + + draw->vertex_fetch.nr_attrs = nr_attrs; + + draw->vertex_fetch.fetch_func = generic_vertex_fetch; + + switch (nr_attrs) { + case 2: + if (draw->vertex_element[0].src_format == PIPE_FORMAT_R32G32B32_FLOAT && + draw->vertex_element[1].src_format == PIPE_FORMAT_R32G32B32_FLOAT) + draw->vertex_fetch.fetch_func = fetch_xyz_rgb; + break; + case 3: + if (draw->vertex_element[0].src_format == PIPE_FORMAT_R32G32B32_FLOAT && + draw->vertex_element[1].src_format == PIPE_FORMAT_R32G32B32_FLOAT && + draw->vertex_element[2].src_format == PIPE_FORMAT_R32G32_FLOAT) + draw->vertex_fetch.fetch_func = fetch_xyz_rgb_st; + break; + default: + break; + } + +} |