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Split out vertex shader/cache/fetch functionality from draw_prim.c

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This commit is contained in:
Keith Whitwell 2007-08-27 19:30:11 +01:00
parent b0455958cc
commit 874b926560
7 changed files with 513 additions and 410 deletions
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6
src/mesa/pipe/draw/draw_arrays.c
View file

@ -55,7 +55,11 @@ draw_arrays(struct draw_context *draw, unsigned prim,
/* tell drawing pipeline we're beginning drawing */
draw->pipeline.first->begin( draw->pipeline.first );
draw_invalidate_vcache( draw );
/* XXX: Shouldn't really be needed - cache should be invalidated
* after setting new vertex buffers, vertex elements, but not
* between draws.
*/
draw_vertex_cache_invalidate( draw );
draw_set_prim( draw, prim );

416
src/mesa/pipe/draw/draw_prim.c
View file

@ -58,299 +58,6 @@ static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = {
};
static INLINE unsigned
compute_clipmask(float cx, float cy, float cz, float cw)
{
unsigned mask;
#if defined(macintosh) || defined(__powerpc__)
/* on powerpc cliptest is 17% faster in this way. */
mask = (((cw < cx) << CLIP_RIGHT_SHIFT));
mask |= (((cw < -cx) << CLIP_LEFT_SHIFT));
mask |= (((cw < cy) << CLIP_TOP_SHIFT));
mask |= (((cw < -cy) << CLIP_BOTTOM_SHIFT));
mask |= (((cw < cz) << CLIP_FAR_SHIFT));
mask |= (((cw < -cz) << CLIP_NEAR_SHIFT));
#else /* !defined(macintosh)) */
mask = 0x0;
if (-cx + cw < 0) mask |= CLIP_RIGHT_BIT;
if ( cx + cw < 0) mask |= CLIP_LEFT_BIT;
if (-cy + cw < 0) mask |= CLIP_TOP_BIT;
if ( cy + cw < 0) mask |= CLIP_BOTTOM_BIT;
if (-cz + cw < 0) mask |= CLIP_FAR_BIT;
if ( cz + cw < 0) mask |= CLIP_NEAR_BIT;
#endif /* defined(macintosh) */
return mask;
}
/**
* Fetch a float[4] vertex attribute from memory, doing format/type
* conversion as needed.
* XXX this might be a temporary thing.
*/
static void
fetch_attrib4(const void *ptr, unsigned format, float attrib[4])
{
/* defaults */
attrib[1] = 0.0;
attrib[2] = 0.0;
attrib[3] = 1.0;
switch (format) {
case PIPE_FORMAT_R32G32B32A32_FLOAT:
attrib[3] = ((float *) ptr)[3];
/* fall-through */
case PIPE_FORMAT_R32G32B32_FLOAT:
attrib[2] = ((float *) ptr)[2];
/* fall-through */
case PIPE_FORMAT_R32G32_FLOAT:
attrib[1] = ((float *) ptr)[1];
/* fall-through */
case PIPE_FORMAT_R32_FLOAT:
attrib[0] = ((float *) ptr)[0];
break;
default:
assert(0);
}
}
#if !defined(XSTDCALL)
#if defined(WIN32)
#define XSTDCALL __stdcall
#else
#define XSTDCALL
#endif
#endif
#if defined(USE_X86_ASM) || defined(SLANG_X86)
typedef void (XSTDCALL *sse2_function)(
const struct tgsi_exec_vector *input,
struct tgsi_exec_vector *output,
float (*constant)[4],
struct tgsi_exec_vector *temporary );
#endif
/**
* Transform vertices with the current vertex program/shader
* Up to four vertices can be shaded at a time.
* \param vbuffer the input vertex data
* \param elts indexes of four input vertices
* \param count number of vertices to shade [1..4]
* \param vOut array of pointers to four output vertices
*/
static void
run_vertex_program(struct draw_context *draw,
unsigned elts[4], unsigned count,
struct vertex_header *vOut[])
{
struct tgsi_exec_machine machine;
unsigned int j;
#if 0
FILE *file = stdout;
#endif
ALIGN16_DECL(struct tgsi_exec_vector, inputs, PIPE_ATTRIB_MAX);
ALIGN16_DECL(struct tgsi_exec_vector, outputs, PIPE_ATTRIB_MAX);
const float *scale = draw->viewport.scale;
const float *trans = draw->viewport.translate;
assert(count <= 4);
assert(draw->vertex_shader.outputs_written & (1 << TGSI_ATTRIB_POS));
#if 0
if( file == NULL ) {
file = fopen( "vs-exec.txt", "wt" );
}
#endif
#ifdef DEBUG
memset( &machine, 0, sizeof( machine ) );
#endif
/* init machine state */
tgsi_exec_machine_init(&machine,
draw->vertex_shader.tokens,
PIPE_MAX_SAMPLERS,
NULL /*samplers*/ );
/* Consts does not require 16 byte alignment. */
machine.Consts = (float (*)[4]) draw->mapped_constants;
machine.Inputs = ALIGN16_ASSIGN(inputs);
machine.Outputs = ALIGN16_ASSIGN(outputs);
#if 0
{
unsigned attr;
for (attr = 0; attr < 16; attr++) {
if (draw->vertex_shader.inputs_read & (1 << attr)) {
unsigned buf = draw->vertex_element[attr].vertex_buffer_index;
fprintf(file, "attr %d: buf_off %d src_off %d pitch %d\n",
attr,
draw->vertex_buffer[buf].buffer_offset,
draw->vertex_element[attr].src_offset,
draw->vertex_buffer[buf].pitch);
}
}
}
#endif
/* load machine inputs */
for (j = 0; j < count; j++) {
unsigned attr;
for (attr = 0; attr < 16; attr++) {
if (draw->vertex_shader.inputs_read & (1 << attr)) {
unsigned buf = draw->vertex_element[attr].vertex_buffer_index;
const void *src
= (const void *) ((const ubyte *) draw->mapped_vbuffer[buf]
+ draw->vertex_buffer[buf].buffer_offset
+ draw->vertex_element[attr].src_offset
+ elts[j] * draw->vertex_buffer[buf].pitch);
float p[4];
fetch_attrib4(src, draw->vertex_element[attr].src_format, p);
machine.Inputs[attr].xyzw[0].f[j] = p[0]; /*X*/
machine.Inputs[attr].xyzw[1].f[j] = p[1]; /*Y*/
machine.Inputs[attr].xyzw[2].f[j] = p[2]; /*Z*/
machine.Inputs[attr].xyzw[3].f[j] = p[3]; /*W*/
#if 0
fprintf(file, "Input vertex %d: attr %d: %f %f %f %f\n",
j, attr, p[0], p[1], p[2], p[3]);
fflush( file );
#endif
}
}
}
#if 0
printf("Vertex shader Constants:\n");
{
int i;
for (i = 0; i < 4; i++) {
printf(" %d: %f %f %f %f\n", i,
machine.Consts[i][0],
machine.Consts[i][1],
machine.Consts[i][2],
machine.Consts[i][3]);
}
}
#endif
/* run shader */
if( draw->vertex_shader.executable != NULL ) {
#if defined(USE_X86_ASM) || defined(SLANG_X86)
sse2_function func = (sse2_function) draw->vertex_shader.executable;
func(
machine.Inputs,
machine.Outputs,
machine.Consts,
machine.Temps );
#else
assert( 0 );
#endif
}
else {
tgsi_exec_machine_run( &machine );
}
#if 0
for (i = 0; i < 4; i++) {
fprintf(file, "VS result: %f %f %f %f\n",
machine.Outputs[0].xyzw[0].f[i],
machine.Outputs[0].xyzw[1].f[i],
machine.Outputs[0].xyzw[2].f[i],
machine.Outputs[0].xyzw[3].f[i]);
}
fflush( file );
#endif
/* store machine results */
for (j = 0; j < count; j++) {
unsigned slot;
float x, y, z, w;
/* Handle attr[0] (position) specially: */
x = vOut[j]->clip[0] = machine.Outputs[0].xyzw[0].f[j];
y = vOut[j]->clip[1] = machine.Outputs[0].xyzw[1].f[j];
z = vOut[j]->clip[2] = machine.Outputs[0].xyzw[2].f[j];
w = vOut[j]->clip[3] = machine.Outputs[0].xyzw[3].f[j];
vOut[j]->clipmask = compute_clipmask(x, y, z, w) | draw->user_clipmask;
vOut[j]->edgeflag = 1;
/* divide by w */
w = 1.0f / w;
x *= w;
y *= w;
z *= w;
/* Viewport mapping */
vOut[j]->data[0][0] = x * scale[0] + trans[0];
vOut[j]->data[0][1] = y * scale[1] + trans[1];
vOut[j]->data[0][2] = z * scale[2] + trans[2];
vOut[j]->data[0][3] = w;
#if 0
fprintf(file, "Vert %d: wincoord: %f %f %f %f\n", j,
vOut[j]->data[0][0],
vOut[j]->data[0][1],
vOut[j]->data[0][2],
vOut[j]->data[0][3]);
fflush( file );
#endif
/* remaining attributes are packed into sequential post-transform
* vertex attrib slots.
*/
for (slot = 1; slot < draw->vertex_info.num_attribs; slot++) {
vOut[j]->data[slot][0] = machine.Outputs[slot].xyzw[0].f[j];
vOut[j]->data[slot][1] = machine.Outputs[slot].xyzw[1].f[j];
vOut[j]->data[slot][2] = machine.Outputs[slot].xyzw[2].f[j];
vOut[j]->data[slot][3] = machine.Outputs[slot].xyzw[3].f[j];
#if 0
fprintf(file, "output attrib slot %d: %f %f %f %f vert %p\n",
slot,
vOut[j]->data[slot][0],
vOut[j]->data[slot][1],
vOut[j]->data[slot][2],
vOut[j]->data[slot][3], vOut[j]);
#endif
}
} /* loop over vertices */
}
/**
* Called by the draw module when the vertx cache needs to be flushed.
* This involves running the vertex shader.
*/
static void transform_vertices( struct draw_context *draw )
{
unsigned i, j;
/* run vertex shader on vertex cache entries, four per invokation */
for (i = 0; i < draw->vs.queue_nr; i += 4) {
struct vertex_header *dests[4];
unsigned elts[4];
int n;
for (j = 0; j < 4; j++) {
elts[j] = draw->vs.queue[i + j].elt;
dests[j] = draw->vs.queue[i + j].dest;
}
n = MIN2(4, draw->vs.queue_nr - i);
assert(n > 0);
assert(n <= 4);
run_vertex_program(draw, elts, n, dests);
}
draw->vs.queue_nr = 0;
}
void draw_flush( struct draw_context *draw )
{
struct draw_stage *first = draw->pipeline.first;
@ -358,7 +65,7 @@ void draw_flush( struct draw_context *draw )
/* Make sure all vertices are available:
*/
transform_vertices(draw);
draw_vertex_cache_validate(draw);
switch (draw->reduced_prim) {
case RP_TRI:
@ -385,23 +92,11 @@ void draw_flush( struct draw_context *draw )
}
draw->pq.queue_nr = 0;
draw->vcache.referenced = 0;
draw->vcache.overflow = 0;
draw_vertex_cache_unreference( draw );
}
void draw_invalidate_vcache( struct draw_context *draw )
{
unsigned i;
assert(draw->pq.queue_nr == 0);
assert(draw->vs.queue_nr == 0);
assert(draw->vcache.referenced == 0);
for (i = 0; i < Elements( draw->vcache.idx ); i++)
draw->vcache.idx[i] = ~0;
}
/* Return a pointer to a freshly queued primitive header. Ensure that
* there is room in the vertex cache for a maximum of "nr_verts" new
@ -412,76 +107,15 @@ static struct prim_header *get_queued_prim( struct draw_context *draw,
unsigned nr_verts )
{
if (draw->pq.queue_nr + 1 >= PRIM_QUEUE_LENGTH ||
draw->vcache.overflow + nr_verts >= VCACHE_OVERFLOW)
draw_vertex_cache_check_space( draw, nr_verts ))
{
draw_flush( draw );
/* The vs queue is sized so that this can never happen:
*/
assert(draw->vs.queue_nr + nr_verts < VS_QUEUE_LENGTH);
}
return &draw->pq.queue[draw->pq.queue_nr++];
}
/* Check if vertex is in cache, otherwise add it. It won't go through
* VS yet, not until there is a flush operation or the VS queue fills up.
*/
static struct vertex_header *get_vertex( struct draw_context *draw,
unsigned i )
{
unsigned slot = (i + (i>>5)) & 31;
/* Cache miss?
*/
if (draw->vcache.idx[slot] != i) {
/* If slot is in use, use the overflow area:
*/
if (draw->vcache.referenced & (1 << slot))
slot = VCACHE_SIZE + draw->vcache.overflow++;
else
draw->vcache.referenced |= (1 << slot); /* slot now in use */
draw->vcache.idx[slot] = i;
/* Add to vertex shader queue:
*/
draw->vs.queue[draw->vs.queue_nr].dest = draw->vcache.vertex[slot];
draw->vs.queue[draw->vs.queue_nr].elt = i;
draw->vs.queue_nr++;
/* Need to set the vertex's edge flag here. If we're being called
* by do_ef_triangle(), that function needs edge flag info!
*/
draw->vcache.vertex[slot]->edgeflag = 1; /*XXX use user's edge flag! */
}
return draw->vcache.vertex[slot];
}
static struct vertex_header *get_uint_elt_vertex( struct draw_context *draw,
unsigned i )
{
const unsigned *elts = (const unsigned *) draw->mapped_elts;
return get_vertex( draw, elts[i] );
}
static struct vertex_header *get_ushort_elt_vertex( struct draw_context *draw,
unsigned i )
{
const ushort *elts = (const ushort *) draw->mapped_elts;
return get_vertex( draw, elts[i] );
}
static struct vertex_header *get_ubyte_elt_vertex( struct draw_context *draw,
unsigned i )
{
const ubyte *elts = (const ubyte *) draw->mapped_elts;
return get_vertex( draw, elts[i] );
}
static void do_point( struct draw_context *draw,
@ -536,7 +170,7 @@ static void do_ef_triangle( struct draw_context *draw,
struct vertex_header *v0 = draw->get_vertex( draw, i0 );
struct vertex_header *v1 = draw->get_vertex( draw, i1 );
struct vertex_header *v2 = draw->get_vertex( draw, i2 );
prim->reset_line_stipple = reset_stipple;
prim->edgeflags = ef_mask & ((v0->edgeflag << 0) |
@ -719,42 +353,6 @@ draw_set_prim( struct draw_context *draw, unsigned prim )
}
/**
* Tell the drawing context about the index/element buffer to use
* (ala glDrawElements)
* If no element buffer is to be used (i.e. glDrawArrays) then this
* should be called with eltSize=0 and elements=NULL.
*
* \param draw the drawing context
* \param eltSize size of each element (1, 2 or 4 bytes)
* \param elements the element buffer ptr
*/
void
draw_set_mapped_element_buffer( struct draw_context *draw,
unsigned eltSize, void *elements )
{
/* choose the get_vertex() function to use */
switch (eltSize) {
case 0:
draw->get_vertex = get_vertex;
break;
case 1:
draw->get_vertex = get_ubyte_elt_vertex;
break;
case 2:
draw->get_vertex = get_ushort_elt_vertex;
break;
case 4:
draw->get_vertex = get_uint_elt_vertex;
break;
default:
assert(0);
}
draw->mapped_elts = elements;
draw->eltSize = eltSize;
}
/**
* Tell drawing context where to find mapped vertex buffers.
*/

19
src/mesa/pipe/draw/draw_vertex.h
View file

@ -61,4 +61,23 @@ struct vertex_info
struct draw_context;
extern int draw_vertex_cache_check_space( struct draw_context *draw,
unsigned nr_verts );
extern void draw_vertex_cache_validate( struct draw_context *draw );
extern void draw_vertex_cache_invalidate( struct draw_context *draw );
extern void draw_vertex_cache_unreference( struct draw_context *draw );
extern void draw_vertex_shader_queue_flush( struct draw_context *draw );
struct tgsi_exec_machine;
extern void draw_vertex_fetch( struct draw_context *draw,
struct tgsi_exec_machine *machine,
const unsigned *elts,
unsigned count );
#endif /* DRAW_VERTEX_H */

175
src/mesa/pipe/draw/draw_vertex_cache.c Normal file
View file

@ -0,0 +1,175 @@
/**************************************************************************
*
* 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 "draw_private.h"
#include "draw_context.h"
#include "draw_vertex.h"
void draw_vertex_cache_invalidate( struct draw_context *draw )
{
unsigned i;
assert(draw->pq.queue_nr == 0);
assert(draw->vs.queue_nr == 0);
assert(draw->vcache.referenced == 0);
for (i = 0; i < Elements( draw->vcache.idx ); i++)
draw->vcache.idx[i] = ~0;
}
/* Check if vertex is in cache, otherwise add it. It won't go through
* VS yet, not until there is a flush operation or the VS queue fills up.
*/
static struct vertex_header *get_vertex( struct draw_context *draw,
unsigned i )
{
unsigned slot = (i + (i>>5)) & 31;
/* Cache miss?
*/
if (draw->vcache.idx[slot] != i) {
/* If slot is in use, use the overflow area:
*/
if (draw->vcache.referenced & (1 << slot))
slot = VCACHE_SIZE + draw->vcache.overflow++;
else
draw->vcache.referenced |= (1 << slot); /* slot now in use */
draw->vcache.idx[slot] = i;
/* Add to vertex shader queue:
*/
draw->vs.queue[draw->vs.queue_nr].dest = draw->vcache.vertex[slot];
draw->vs.queue[draw->vs.queue_nr].elt = i;
draw->vs.queue_nr++;
/* Need to set the vertex's edge flag here. If we're being called
* by do_ef_triangle(), that function needs edge flag info!
*/
draw->vcache.vertex[slot]->edgeflag = 1; /*XXX use user's edge flag! */
}
return draw->vcache.vertex[slot];
}
static struct vertex_header *get_uint_elt_vertex( struct draw_context *draw,
unsigned i )
{
const unsigned *elts = (const unsigned *) draw->mapped_elts;
return get_vertex( draw, elts[i] );
}
static struct vertex_header *get_ushort_elt_vertex( struct draw_context *draw,
unsigned i )
{
const ushort *elts = (const ushort *) draw->mapped_elts;
return get_vertex( draw, elts[i] );
}
static struct vertex_header *get_ubyte_elt_vertex( struct draw_context *draw,
unsigned i )
{
const ubyte *elts = (const ubyte *) draw->mapped_elts;
return get_vertex( draw, elts[i] );
}
void draw_vertex_cache_validate( struct draw_context *draw )
{
draw_vertex_shader_queue_flush( draw );
}
void draw_vertex_cache_unreference( struct draw_context *draw )
{
draw->vcache.referenced = 0;
draw->vcache.overflow = 0;
}
int draw_vertex_cache_check_space( struct draw_context *draw,
unsigned nr_verts )
{
if (draw->vcache.overflow + nr_verts < VCACHE_OVERFLOW) {
/* The vs queue is sized so that this can never happen:
*/
assert(draw->vs.queue_nr + nr_verts < VS_QUEUE_LENGTH);
return TRUE;
}
else
return FALSE;
}
/**
* Tell the drawing context about the index/element buffer to use
* (ala glDrawElements)
* If no element buffer is to be used (i.e. glDrawArrays) then this
* should be called with eltSize=0 and elements=NULL.
*
* \param draw the drawing context
* \param eltSize size of each element (1, 2 or 4 bytes)
* \param elements the element buffer ptr
*/
void
draw_set_mapped_element_buffer( struct draw_context *draw,
unsigned eltSize, void *elements )
{
/* choose the get_vertex() function to use */
switch (eltSize) {
case 0:
draw->get_vertex = get_vertex;
break;
case 1:
draw->get_vertex = get_ubyte_elt_vertex;
break;
case 2:
draw->get_vertex = get_ushort_elt_vertex;
break;
case 4:
draw->get_vertex = get_uint_elt_vertex;
break;
default:
assert(0);
}
draw->mapped_elts = elements;
draw->eltSize = eltSize;
}

101
src/mesa/pipe/draw/draw_vertex_fetch.c Normal file
View file

@ -0,0 +1,101 @@
/**************************************************************************
*
* 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 "draw_private.h"
#include "draw_context.h"
#include "draw_vertex.h"
#include "pipe/tgsi/exec/tgsi_core.h"
/**
* Fetch a float[4] vertex attribute from memory, doing format/type
* conversion as needed.
* XXX this might be a temporary thing.
*/
static void
fetch_attrib4(const void *ptr, unsigned format, float attrib[4])
{
/* defaults */
attrib[1] = 0.0;
attrib[2] = 0.0;
attrib[3] = 1.0;
switch (format) {
case PIPE_FORMAT_R32G32B32A32_FLOAT:
attrib[3] = ((float *) ptr)[3];
/* fall-through */
case PIPE_FORMAT_R32G32B32_FLOAT:
attrib[2] = ((float *) ptr)[2];
/* fall-through */
case PIPE_FORMAT_R32G32_FLOAT:
attrib[1] = ((float *) ptr)[1];
/* fall-through */
case PIPE_FORMAT_R32_FLOAT:
attrib[0] = ((float *) ptr)[0];
break;
default:
assert(0);
}
}
void draw_vertex_fetch( struct draw_context *draw,
struct tgsi_exec_machine *machine,
const unsigned *elts,
unsigned count )
{
unsigned j;
/* load machine inputs */
for (j = 0; j < count; j++) {
unsigned attr;
for (attr = 0; attr < 16; attr++) {
if (draw->vertex_shader.inputs_read & (1 << attr)) {
unsigned buf = draw->vertex_element[attr].vertex_buffer_index;
const void *src
= (const void *) ((const ubyte *) draw->mapped_vbuffer[buf]
+ draw->vertex_buffer[buf].buffer_offset
+ draw->vertex_element[attr].src_offset
+ elts[j] * draw->vertex_buffer[buf].pitch);
float p[4];
fetch_attrib4(src, draw->vertex_element[attr].src_format, p);
machine->Inputs[attr].xyzw[0].f[j] = p[0]; /*X*/
machine->Inputs[attr].xyzw[1].f[j] = p[1]; /*Y*/
machine->Inputs[attr].xyzw[2].f[j] = p[2]; /*Z*/
machine->Inputs[attr].xyzw[3].f[j] = p[3]; /*W*/
}
}
}
}

203
src/mesa/pipe/draw/draw_vertex_shader.c Normal file
View file

@ -0,0 +1,203 @@
/**************************************************************************
*
* 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>
* Brian Paul
*/
#include "pipe/p_util.h"
#include "draw_private.h"
#include "draw_context.h"
#include "draw_vertex.h"
#include "pipe/tgsi/exec/tgsi_core.h"
static INLINE unsigned
compute_clipmask(float cx, float cy, float cz, float cw)
{
unsigned mask = 0;
if (-cx + cw < 0) mask |= CLIP_RIGHT_BIT;
if ( cx + cw < 0) mask |= CLIP_LEFT_BIT;
if (-cy + cw < 0) mask |= CLIP_TOP_BIT;
if ( cy + cw < 0) mask |= CLIP_BOTTOM_BIT;
if (-cz + cw < 0) mask |= CLIP_FAR_BIT;
if ( cz + cw < 0) mask |= CLIP_NEAR_BIT;
return mask;
}
#if !defined(XSTDCALL)
#if defined(WIN32)
#define XSTDCALL __stdcall
#else
#define XSTDCALL
#endif
#endif
#if defined(USE_X86_ASM) || defined(SLANG_X86)
typedef void (XSTDCALL *sse2_function)(
const struct tgsi_exec_vector *input,
struct tgsi_exec_vector *output,
float (*constant)[4],
struct tgsi_exec_vector *temporary );
#endif
/**
* Transform vertices with the current vertex program/shader
* Up to four vertices can be shaded at a time.
* \param vbuffer the input vertex data
* \param elts indexes of four input vertices
* \param count number of vertices to shade [1..4]
* \param vOut array of pointers to four output vertices
*/
static void
run_vertex_program(struct draw_context *draw,
unsigned elts[4], unsigned count,
struct vertex_header *vOut[])
{
struct tgsi_exec_machine machine;
unsigned int j;
ALIGN16_DECL(struct tgsi_exec_vector, inputs, PIPE_ATTRIB_MAX);
ALIGN16_DECL(struct tgsi_exec_vector, outputs, PIPE_ATTRIB_MAX);
const float *scale = draw->viewport.scale;
const float *trans = draw->viewport.translate;
assert(count <= 4);
assert(draw->vertex_shader.outputs_written & (1 << TGSI_ATTRIB_POS));
#ifdef DEBUG
memset( &machine, 0, sizeof( machine ) );
#endif
/* init machine state */
tgsi_exec_machine_init(&machine,
draw->vertex_shader.tokens,
PIPE_MAX_SAMPLERS,
NULL /*samplers*/ );
/* Consts does not require 16 byte alignment. */
machine.Consts = (float (*)[4]) draw->mapped_constants;
machine.Inputs = ALIGN16_ASSIGN(inputs);
machine.Outputs = ALIGN16_ASSIGN(outputs);
draw_vertex_fetch( draw, &machine, elts, count );
/* run shader */
if( draw->vertex_shader.executable != NULL ) {
#if defined(USE_X86_ASM) || defined(SLANG_X86)
sse2_function func = (sse2_function) draw->vertex_shader.executable;
func(
machine.Inputs,
machine.Outputs,
machine.Consts,
machine.Temps );
#else
assert( 0 );
#endif
}
else {
tgsi_exec_machine_run( &machine );
}
/* store machine results */
for (j = 0; j < count; j++) {
unsigned slot;
float x, y, z, w;
/* Handle attr[0] (position) specially: */
x = vOut[j]->clip[0] = machine.Outputs[0].xyzw[0].f[j];
y = vOut[j]->clip[1] = machine.Outputs[0].xyzw[1].f[j];
z = vOut[j]->clip[2] = machine.Outputs[0].xyzw[2].f[j];
w = vOut[j]->clip[3] = machine.Outputs[0].xyzw[3].f[j];
vOut[j]->clipmask = compute_clipmask(x, y, z, w) | draw->user_clipmask;
vOut[j]->edgeflag = 1;
/* divide by w */
w = 1.0f / w;
x *= w;
y *= w;
z *= w;
/* Viewport mapping */
vOut[j]->data[0][0] = x * scale[0] + trans[0];
vOut[j]->data[0][1] = y * scale[1] + trans[1];
vOut[j]->data[0][2] = z * scale[2] + trans[2];
vOut[j]->data[0][3] = w;
/* remaining attributes are packed into sequential post-transform
* vertex attrib slots.
*/
for (slot = 1; slot < draw->vertex_info.num_attribs; slot++) {
vOut[j]->data[slot][0] = machine.Outputs[slot].xyzw[0].f[j];
vOut[j]->data[slot][1] = machine.Outputs[slot].xyzw[1].f[j];
vOut[j]->data[slot][2] = machine.Outputs[slot].xyzw[2].f[j];
vOut[j]->data[slot][3] = machine.Outputs[slot].xyzw[3].f[j];
}
} /* loop over vertices */
}
/**
* Called by the draw module when the vertx cache needs to be flushed.
* This involves running the vertex shader.
*/
void draw_vertex_shader_queue_flush( struct draw_context *draw )
{
unsigned i, j;
/* run vertex shader on vertex cache entries, four per invokation */
for (i = 0; i < draw->vs.queue_nr; i += 4) {
struct vertex_header *dests[4];
unsigned elts[4];
int n;
for (j = 0; j < 4; j++) {
elts[j] = draw->vs.queue[i + j].elt;
dests[j] = draw->vs.queue[i + j].dest;
}
n = MIN2(4, draw->vs.queue_nr - i);
assert(n > 0);
assert(n <= 4);
run_vertex_program(draw, elts, n, dests);
}
draw->vs.queue_nr = 0;
}

3
src/mesa/sources
View file

@ -164,6 +164,9 @@ DRAW_SOURCES = \
pipe/draw/draw_offset.c \
pipe/draw/draw_prim.c \
pipe/draw/draw_twoside.c \
pipe/draw/draw_vertex_cache.c \
pipe/draw/draw_vertex_fetch.c \
pipe/draw/draw_vertex_shader.c \
pipe/draw/draw_unfilled.c
TGSIEXEC_SOURCES = \