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Add infrastructure for t_vertex.c codegen. Add an example driver 

for this which spits out C code for the generated functions.
This commit is contained in:
Keith Whitwell 2004-06-30 11:48:21 +00:00
parent 8e77da1cd7
commit 009aa3ef5e
7 changed files with 869 additions and 19 deletions
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4
src/mesa/glapi/glapi.c
View File

@ -291,8 +291,8 @@ _glapi_set_dispatch(struct _glapi_table *dispatch)
/* Use the no-op functions if a NULL dispatch table was requested.
*/
old_style_dispatch = (struct _glapi_table *) (dispatch == NULL)
? __glapi_noop_table : dispatch;
old_style_dispatch = (dispatch == NULL)
? (struct _glapi_table *) __glapi_noop_table : dispatch;
#ifdef DEBUG
if (dispatch != NULL) {

2
src/mesa/sources
View File

@ -125,6 +125,8 @@ TNL_SOURCES = \
tnl/t_vb_texmat.c \
tnl/t_vb_vertex.c \
tnl/t_vertex.c \
tnl/t_vertex_c.c \
tnl/t_vertex_codegen.c \
tnl/t_vtx_api.c \
tnl/t_vtx_generic.c \
tnl/t_vtx_x86.c \

43
src/mesa/tnl/t_context.h
View File

@ -524,6 +524,7 @@ struct tnl_pipeline {
GLuint nr_stages;
};
struct tnl_clipspace;
struct tnl_clipspace_attr;
typedef void (*extract_func)( const struct tnl_clipspace_attr *a, GLfloat *out,
@ -532,6 +533,9 @@ typedef void (*extract_func)( const struct tnl_clipspace_attr *a, GLfloat *out,
typedef void (*insert_func)( const struct tnl_clipspace_attr *a, GLubyte *v,
const GLfloat *in );
typedef void (*emit_func)( GLcontext *ctx, GLuint start,
GLuint end, void *dest );
/**
* Describes how to convert/move a vertex attribute from a vertex array
@ -540,6 +544,7 @@ typedef void (*insert_func)( const struct tnl_clipspace_attr *a, GLubyte *v,
struct tnl_clipspace_attr
{
GLuint attrib; /* which vertex attrib (0=position, etc) */
GLuint format;
GLuint vertoffset; /* position of the attrib in the vertex struct */
GLuint vertattrsize; /* size of the attribute in bytes */
GLubyte *inputptr;
@ -551,6 +556,40 @@ struct tnl_clipspace_attr
};
struct tnl_clipspace_codegen {
GLboolean (*emit_header)( struct tnl_clipspace_codegen *,
struct tnl_clipspace *);
GLboolean (*emit_footer)( struct tnl_clipspace_codegen * );
GLboolean (*emit_attr_header)( struct tnl_clipspace_codegen *,
struct tnl_clipspace_attr *,
GLint j, GLenum out_type,
GLboolean need_vp );
GLboolean (*emit_attr_footer)( struct tnl_clipspace_codegen * );
GLboolean (*emit_mov)( struct tnl_clipspace_codegen *,
GLint, GLint );
GLboolean (*emit_const)( struct tnl_clipspace_codegen *,
GLint, GLfloat );
GLboolean (*emit_mad)( struct tnl_clipspace_codegen *,
GLint, GLint, GLint, GLint );
GLboolean (*emit_float_to_chan)( struct tnl_clipspace_codegen *,
GLint, GLint );
GLboolean (*emit_const_chan)( struct tnl_clipspace_codegen *,
GLint, GLchan );
GLboolean (*emit_float_to_ubyte)( struct tnl_clipspace_codegen *,
GLint, GLint );
GLboolean (*emit_const_ubyte)( struct tnl_clipspace_codegen *,
GLint, GLubyte );
emit_func (*emit_store_func)( struct tnl_clipspace_codegen * );
struct _tnl_dynfn codegen_list;
char *buf;
int buf_size;
int buf_used;
int out_offset;
};
typedef void (*points_func)( GLcontext *ctx, GLuint first, GLuint last );
typedef void (*line_func)( GLcontext *ctx, GLuint v1, GLuint v2 );
@ -586,9 +625,11 @@ struct tnl_clipspace
struct tnl_clipspace_attr attr[_TNL_ATTRIB_MAX];
GLuint attr_count;
void (*emit)( GLcontext *ctx, GLuint start, GLuint end, void *dest );
emit_func emit;
interp_func interp;
copy_pv_func copy_pv;
struct tnl_clipspace_codegen codegen;
};

54
src/mesa/tnl/t_vertex.c
View File

@ -43,7 +43,6 @@
#define GET_VERTEX_STATE(ctx) &(TNL_CONTEXT(ctx)->clipspace)
/*
@ -587,7 +586,7 @@ static void extract_1ub_1f( const struct tnl_clipspace_attr *a, GLfloat *out, co
}
struct {
static struct {
const char *name;
extract_func extract;
insert_func insert[4];
@ -859,16 +858,36 @@ static void generic_copy_pv_extras( GLcontext *ctx,
*/
static void choose_emit_func( GLcontext *ctx,
GLuint start, GLuint end,
void *dest )
static void do_emit( GLcontext *ctx, GLuint start, GLuint end,
void *dest)
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->emit = generic_emit;
struct tnl_clipspace_attr *a = vtx->attr;
const GLuint count = vtx->attr_count;
GLuint j;
for (j = 0; j < count; j++) {
GLvector4f *vptr = VB->AttribPtr[a[j].attrib];
a[j].inputstride = vptr->stride;
a[j].inputptr = ((GLubyte *)vptr->data) + start * vptr->stride;
a[j].emit = a[j].insert[vptr->size - 1];
}
vtx->emit = 0;
if (0)
vtx->emit = _tnl_codegen_emit(ctx);
if (!vtx->emit)
vtx->emit = generic_emit;
vtx->emit( ctx, start, end, dest );
}
static void choose_interp_func( GLcontext *ctx,
GLfloat t,
GLuint edst, GLuint eout, GLuint ein,
@ -1000,7 +1019,7 @@ GLuint _tnl_install_attrs( GLcontext *ctx, const struct tnl_attr_map *map,
assert(nr < _TNL_ATTRIB_MAX);
assert(nr == 0 || map[0].attrib == VERT_ATTRIB_POS);
vtx->emit = choose_emit_func;
vtx->emit = 0;
vtx->interp = choose_interp_func;
vtx->copy_pv = choose_copy_pv_func;
vtx->new_inputs = ~0;
@ -1008,14 +1027,15 @@ GLuint _tnl_install_attrs( GLcontext *ctx, const struct tnl_attr_map *map,
for (j = 0, i = 0; i < nr; i++) {
const GLuint format = map[i].format;
if (format == EMIT_PAD) {
offset += map[i].offset;
fprintf(stderr, "%d: pad %d, offset %d\n", i,
map[i].offset, offset);
/* fprintf(stderr, "%d: pad %d, offset now %d\n", i, */
/* map[i].offset, offset); */
offset += map[i].offset;
}
else {
vtx->attr[j].attrib = map[i].attrib;
vtx->attr[j].format = format;
vtx->attr[j].vp = vp;
vtx->attr[j].insert = format_info[format].insert;
vtx->attr[j].extract = format_info[format].extract;
@ -1026,8 +1046,9 @@ GLuint _tnl_install_attrs( GLcontext *ctx, const struct tnl_attr_map *map,
else
vtx->attr[j].vertoffset = offset;
/* fprintf(stderr, "%d: %s offset %d\n", i, */
/* format_info[format].name, vtx->attr[j].vertoffset); */
fprintf(stderr, "%d: %s, vp %p, offset %d\n", i,
format_info[format].name, (void *)vp,
vtx->attr[j].vertoffset);
offset += format_info[format].attrsize;
j++;
@ -1055,7 +1076,6 @@ void _tnl_invalidate_vertices( GLcontext *ctx, GLuint newinputs )
}
void _tnl_build_vertices( GLcontext *ctx,
GLuint start,
GLuint end,
@ -1068,8 +1088,8 @@ void _tnl_build_vertices( GLcontext *ctx,
newinputs |= vtx->new_inputs;
vtx->new_inputs = 0;
if (newinputs)
vtx->emit( ctx, start, end, vDest );
if (newinputs)
do_emit( ctx, start, end, vDest );
}
@ -1079,7 +1099,7 @@ void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
void *dest )
{
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
vtx->emit( ctx, start, end, dest );
do_emit( ctx, start, end, dest );
return (void *)((GLubyte *)dest + vtx->vertex_size * (end - start));
}
@ -1098,6 +1118,8 @@ void _tnl_init_vertices( GLcontext *ctx,
vtx->max_vertex_size = max_vertex_size;
vtx->vertex_buf = (GLubyte *)ALIGN_CALLOC(vb_size * max_vertex_size, 32 );
}
_tnl_init_c_codegen( &vtx->codegen );
}

19
src/mesa/tnl/t_vertex.h
View File

@ -124,5 +124,24 @@ extern void _tnl_invalidate_vertices( GLcontext *ctx, GLuint newinputs );
extern void _tnl_invalidate_vertex_state( GLcontext *ctx, GLuint new_state );
extern emit_func _tnl_codegen_emit( GLcontext *ctx );
#define REG_IN (0<<16)
#define REG_OUT (1<<16)
#define REG_VP (2<<16)
#define REG_TMP (3<<16)
#define REG_MASK (3<<16)
#define REG_OFFSET_MASK 0xffff
#define in( offset ) (REG_IN | (offset))
#define out( offset ) (REG_OUT | (offset))
#define vp( offset ) (REG_VP | (offset))
#define tmp( offset ) (REG_TMP | (offset))
extern void _tnl_init_c_codegen( struct tnl_clipspace_codegen *p );
#define GET_VERTEX_STATE(ctx) &(TNL_CONTEXT(ctx)->clipspace)
#endif

257
src/mesa/tnl/t_vertex_c.c Normal file
View File

@ -0,0 +1,257 @@
/*
* Copyright 2003 Tungsten Graphics, inc.
* 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
* on 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 THEIR 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 <keithw@tungstengraphics.com>
*/
#include "glheader.h"
#include "context.h"
#include "colormac.h"
#include "t_context.h"
#include "t_vertex.h"
#include "simple_list.h"
/* A version of code generation for t_clipspace_codegen.c which prints
* out 'c' code to implement the generated function. A useful
* debugging tool, and in concert with something like tcc or a
* library-ized gcc, could do the whole job.
*/
static GLboolean emit( struct tnl_clipspace_codegen *p,
const char *fmt,
... )
{
if (p->buf_used < p->buf_size) {
va_list ap;
va_start( ap, fmt );
p->buf_used += vsnprintf( p->buf + p->buf_used,
p->buf_size - p->buf_used,
fmt, ap );
va_end( ap );
}
return p->buf_used < p->buf_size;
}
static GLboolean print_header( struct tnl_clipspace_codegen *p,
struct tnl_clipspace *vtx )
{
p->buf_used = 0;
p->out_offset = 0;
return
emit(p,
"struct tnl_clipspace_attr\n"
"{\n"
" unsigned int attrib; \n"
" unsigned int format;\n"
" unsigned int vertoffset; \n"
" unsigned int vertattrsize; \n"
" char *inputptr;\n"
" unsigned int inputstride;\n"
" void *insert;\n"
" void *emit;\n"
" void * extract;\n"
" const float *vp; \n"
"};\n"
"\n"
) &&
emit(p,
"void emit_vertices( int start, int end, char *dest, \n"
" struct tnl_clipspace_attr *a) \n"
"{\n"
" int i;"
" for (i = start ; i < end ; i++, dest += %d) {\n",
vtx->vertex_size);
}
static GLboolean print_footer( struct tnl_clipspace_codegen *p )
{
return
emit(p,
" }\n"
"}\n"
);
}
static GLboolean emit_reg( struct tnl_clipspace_codegen *p, GLint reg )
{
int idx = reg & REG_OFFSET_MASK;
switch (reg & REG_MASK) {
case REG_IN: return emit(p, "in[%d]", idx);
case REG_VP: return emit(p, "vp[%d]", idx);
case REG_TMP: return emit(p, "temp[%d]", idx); /* not used? */
case REG_OUT: return emit(p, "out[%d]", idx);
}
return GL_FALSE;
}
static GLboolean print_mov( struct tnl_clipspace_codegen *p, GLint dest, GLint src )
{
return
emit(p, " ") &&
emit_reg(p, dest) &&
emit(p, " = ") &&
emit_reg(p, src) &&
emit(p, ";\n");
}
static GLboolean print_const( struct tnl_clipspace_codegen *p,
GLint dest, GLfloat c )
{
return
emit(p, " ") &&
emit_reg(p, dest) &&
emit(p, " = %g;\n", c);
}
static GLboolean print_const_chan( struct tnl_clipspace_codegen *p,
GLint dest, GLchan c )
{
return
emit(p, " ") &&
emit_reg(p, dest) &&
emit(p, " = ") &&
#if CHAN_TYPE == GL_FLOAT
emit(p, "%f", c) &&
#else
emit(p, "%d", c) &&
#endif
emit(p, ";\n");
}
static GLboolean print_const_ubyte( struct tnl_clipspace_codegen *p,
GLint dest, GLubyte c )
{
return
emit(p, " ") &&
emit_reg(p, dest) &&
emit(p, " = %x;\n", c);
}
static GLboolean print_mad( struct tnl_clipspace_codegen *p,
GLint dest, GLint src0, GLint src1, GLint src2 )
{
return
emit(p, " ") &&
emit_reg(p, dest) &&
emit(p, " = ") &&
emit_reg(p, src0) &&
emit(p, " * ") &&
emit_reg(p, src1) &&
emit(p, " + ") &&
emit_reg(p, src2) &&
emit(p, ";\n");
}
static GLboolean print_float_to_ubyte( struct tnl_clipspace_codegen *p,
GLint dest, GLint src )
{
return
emit(p, " ") &&
emit(p, "UNCLAMPED_FLOAT_TO_UBYTE(") &&
emit_reg(p, dest) &&
emit(p, ", ") &&
emit_reg(p, src) &&
emit(p, ");\n");
}
static GLboolean print_float_to_chan( struct tnl_clipspace_codegen *p,
GLint dest, GLint src )
{
return
emit(p, " ") &&
emit(p, "UNCLAMPED_FLOAT_TO_CHAN(") &&
emit_reg(p, dest) &&
emit(p, ", ") &&
emit_reg(p, src) &&
emit(p, ");\n");
}
static GLboolean print_attr_header( struct tnl_clipspace_codegen *p,
struct tnl_clipspace_attr *a,
GLint j,
GLenum out_type,
GLboolean need_vp)
{
char *out_type_str = "void";
switch(out_type) {
case GL_FLOAT: out_type_str = "float"; break;
case GL_UNSIGNED_BYTE: out_type_str = "unsigned char"; break;
case GL_UNSIGNED_SHORT: out_type_str = "unsigned short"; break;
}
return
emit(p, " {\n") &&
(need_vp ? emit(p, " const float *vp = a[%d].vp;\n", j) : 1) &&
emit(p, " %s *out = (%s *)(dest + %d);\n",
out_type_str, out_type_str, a[j].vertoffset) &&
emit(p, " const float *in = (const float *)a[%d].inputptr;\n",
j) &&
emit(p, " a[%d].inputptr += a[%d].inputstride;\n", j, j);
}
static GLboolean print_attr_footer( struct tnl_clipspace_codegen *p )
{
return
emit(p, " }\n");
}
static emit_func print_store_func( struct tnl_clipspace_codegen *p )
{
fprintf(stderr, "%s: emitted:\n%s\n", __FUNCTION__, p->buf);
return 0;
}
void _tnl_init_c_codegen( struct tnl_clipspace_codegen *p )
{
p->emit_header = print_header;
p->emit_footer = print_footer;
p->emit_attr_header = print_attr_header;
p->emit_attr_footer = print_attr_footer;
p->emit_mov = print_mov;
p->emit_const = print_const;
p->emit_mad = print_mad;
p->emit_float_to_chan = print_float_to_chan;
p->emit_const_chan = print_const_chan;
p->emit_float_to_ubyte = print_float_to_ubyte;
p->emit_const_ubyte = print_const_ubyte;
p->emit_store_func = print_store_func;
make_empty_list(&p->codegen_list);
p->buf_size = 2048;
p->buf = MALLOC(p->buf_size);
}

509
src/mesa/tnl/t_vertex_codegen.c Normal file
View File

@ -0,0 +1,509 @@
/*
* Copyright 2003 Tungsten Graphics, inc.
* 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
* on 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 THEIR 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 <keithw@tungstengraphics.com>
*/
#include "glheader.h"
#include "context.h"
#include "colormac.h"
#include "t_context.h"
#include "t_vertex.h"
#include "simple_list.h"
/* Another codegen scheme, hopefully portable to a few different
* architectures without too much work.
*/
static GLboolean emit_4f_viewport_4( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mad(p, out(1), vp(5), in(1), vp(13)) &&
p->emit_mad(p, out(2), vp(10), in(2), vp(14)) &&
p->emit_mov(p, out(3), in(3));
}
static GLboolean emit_4f_viewport_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mad(p, out(1), vp(5), in(1), vp(13)) &&
p->emit_mad(p, out(2), vp(10), in(2), vp(14)) &&
p->emit_const(p, out(3), 1.0);
}
static GLboolean emit_4f_viewport_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mad(p, out(1), vp(5), in(1), vp(13)) &&
p->emit_mov(p, out(2), vp(14)) &&
p->emit_const(p, out(3), 1.0);
}
static GLboolean emit_4f_viewport_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mov(p, out(1), vp(13)) &&
p->emit_mov(p, out(2), vp(14)) &&
p->emit_const(p, out(3), 1.0);
}
static GLboolean emit_3f_viewport_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mad(p, out(1), vp(5), in(1), vp(13)) &&
p->emit_mad(p, out(2), vp(10), in(2), vp(14));
}
static GLboolean emit_3f_viewport_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mad(p, out(1), vp(5), in(1), vp(13)) &&
p->emit_mov(p, out(2), vp(14));
}
static GLboolean emit_3f_viewport_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mov(p, out(1), vp(13)) &&
p->emit_mov(p, out(2), vp(14));
}
static GLboolean emit_2f_viewport_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12)) &&
p->emit_mad(p, out(1), vp(5), in(1), vp(13));
}
static GLboolean emit_2f_viewport_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_mad(p, out(0), vp(0), in(0), vp(12));
}
static GLboolean emit_4f_4( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_mov(p, out(1), in(1)) &&
p->emit_mov(p, out(2), in(2)) &&
p->emit_mov(p, out(3), in(3));
}
static GLboolean emit_4f_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_mov(p, out(1), in(1)) &&
p->emit_mov(p, out(2), in(2)) &&
p->emit_const(p, out(3), 1.0);
}
static GLboolean emit_4f_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_mov(p, out(1), in(1)) &&
p->emit_const(p, out(2), 0.0) &&
p->emit_const(p, out(3), 1.0);
}
static GLboolean emit_4f_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_const(p, out(1), 0.0) &&
p->emit_const(p, out(2), 0.0) &&
p->emit_const(p, out(3), 1.0);
}
static GLboolean emit_3f_xyw_4( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_mov(p, out(1), in(1)) &&
p->emit_mov(p, out(2), in(3));
}
static GLboolean emit_3f_xyw_err( struct tnl_clipspace_codegen *p )
{
assert(0);
return GL_FALSE;
}
static GLboolean emit_3f_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_mov(p, out(1), in(1)) &&
p->emit_mov(p, out(2), in(2));
}
static GLboolean emit_3f_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_mov(p, out(1), in(1)) &&
p->emit_const(p, out(2), 0.0);
}
static GLboolean emit_3f_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_const(p, out(1), 0.0) &&
p->emit_const(p, out(2), 0.0);
}
static GLboolean emit_2f_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_mov(p, out(1), in(1));
}
static GLboolean emit_2f_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0)) &&
p->emit_const(p, out(1), 0.0);
}
static GLboolean emit_1f_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_mov(p, out(0), in(0));
}
static GLboolean emit_4chan_4f_rgba_4( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_chan(p, out(0), in(0)) &&
p->emit_float_to_chan(p, out(1), in(1)) &&
p->emit_float_to_chan(p, out(2), in(2)) &&
p->emit_float_to_chan(p, out(3), in(3));
}
static GLboolean emit_4chan_4f_rgba_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_chan(p, out(0), in(0)) &&
p->emit_float_to_chan(p, out(1), in(1)) &&
p->emit_float_to_chan(p, out(2), in(2)) &&
p->emit_const_chan(p, out(3), CHAN_MAX);
}
static GLboolean emit_4chan_4f_rgba_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_chan(p, out(0), in(0)) &&
p->emit_float_to_chan(p, out(1), in(1)) &&
p->emit_const_chan(p, out(2), 0) &&
p->emit_const_chan(p, out(3), CHAN_MAX);
}
static GLboolean emit_4chan_4f_rgba_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_chan(p, out(0), in(0)) &&
p->emit_const_chan(p, out(1), 0) &&
p->emit_const_chan(p, out(2), 0) &&
p->emit_const_chan(p, out(3), CHAN_MAX);
}
static GLboolean emit_4ub_4f_rgba_4( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_float_to_ubyte(p, out(2), in(2)) &&
p->emit_float_to_ubyte(p, out(3), in(3));
}
static GLboolean emit_4ub_4f_rgba_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_float_to_ubyte(p, out(2), in(2)) &&
p->emit_const_ubyte(p, out(3), 0xff);
}
static GLboolean emit_4ub_4f_rgba_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_const_ubyte(p, out(2), 0) &&
p->emit_const_ubyte(p, out(3), 0xff);
}
static GLboolean emit_4ub_4f_rgba_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0)) &&
p->emit_const_ubyte(p, out(1), 0) &&
p->emit_const_ubyte(p, out(2), 0) &&
p->emit_const_ubyte(p, out(3), 0xff);
}
static GLboolean emit_4ub_4f_bgra_4( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(2), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_float_to_ubyte(p, out(0), in(2)) &&
p->emit_float_to_ubyte(p, out(3), in(3));
}
static GLboolean emit_4ub_4f_bgra_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(2), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_float_to_ubyte(p, out(0), in(2)) &&
p->emit_const_ubyte(p, out(3), 0xff);
}
static GLboolean emit_4ub_4f_bgra_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(2), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_const_ubyte(p, out(0), 0) &&
p->emit_const_ubyte(p, out(3), 0xff);
}
static GLboolean emit_4ub_4f_bgra_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(2), in(0)) &&
p->emit_const_ubyte(p, out(1), 0) &&
p->emit_const_ubyte(p, out(0), 0) &&
p->emit_const_ubyte(p, out(3), 0xff);
}
static GLboolean emit_3ub_3f_rgb_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_float_to_ubyte(p, out(2), in(2));
}
static GLboolean emit_3ub_3f_rgb_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_const_ubyte(p, out(2), 0);
}
static GLboolean emit_3ub_3f_rgb_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0)) &&
p->emit_const_ubyte(p, out(1), 0) &&
p->emit_const_ubyte(p, out(2), 0);
}
static GLboolean emit_3ub_3f_bgr_3( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(2), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_float_to_ubyte(p, out(0), in(2));
}
static GLboolean emit_3ub_3f_bgr_2( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(2), in(0)) &&
p->emit_float_to_ubyte(p, out(1), in(1)) &&
p->emit_const_ubyte(p, out(0), 0);
}
static GLboolean emit_3ub_3f_bgr_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(2), in(0)) &&
p->emit_const_ubyte(p, out(1), 0) &&
p->emit_const_ubyte(p, out(0), 0);
}
static GLboolean emit_1ub_1f_1( struct tnl_clipspace_codegen *p )
{
return
p->emit_float_to_ubyte(p, out(0), in(0));
}
static struct {
const char *name;
GLenum out_type;
GLboolean need_vp;
GLboolean (*emit[4])( struct tnl_clipspace_codegen * );
} emit_info[EMIT_MAX] = {
{ "1f", GL_FLOAT, GL_FALSE,
{ emit_1f_1, emit_1f_1, emit_1f_1, emit_1f_1 } },
{ "2f", GL_FLOAT, GL_FALSE,
{ emit_2f_1, emit_2f_2, emit_2f_2, emit_2f_2 } },
{ "3f", GL_FLOAT, GL_FALSE,
{ emit_3f_1, emit_3f_2, emit_3f_3, emit_3f_3 } },
{ "4f", GL_FLOAT, GL_FALSE,
{ emit_4f_1, emit_4f_2, emit_4f_3, emit_4f_4 } },
{ "2f_viewport", GL_FLOAT, GL_TRUE,
{ emit_2f_viewport_1, emit_2f_viewport_2, emit_2f_viewport_2,
emit_2f_viewport_2 } },
{ "3f_viewport", GL_FLOAT, GL_TRUE,
{ emit_3f_viewport_1, emit_3f_viewport_2, emit_3f_viewport_3,
emit_3f_viewport_3 } },
{ "4f_viewport", GL_FLOAT, GL_TRUE,
{ emit_4f_viewport_1, emit_4f_viewport_2, emit_4f_viewport_3,
emit_4f_viewport_4 } },
{ "3f_xyw", GL_FLOAT, GL_FALSE,
{ emit_3f_xyw_err, emit_3f_xyw_err, emit_3f_xyw_err,
emit_3f_xyw_4 } },
{ "1ub_1f", GL_UNSIGNED_BYTE, GL_FALSE,
{ emit_1ub_1f_1, emit_1ub_1f_1, emit_1ub_1f_1, emit_1ub_1f_1 } },
{ "3ub_3f_rgb", GL_UNSIGNED_BYTE, GL_FALSE,
{ emit_3ub_3f_rgb_1, emit_3ub_3f_rgb_2, emit_3ub_3f_rgb_3,
emit_3ub_3f_rgb_3 } },
{ "3ub_3f_bgr", GL_UNSIGNED_BYTE, GL_FALSE,
{ emit_3ub_3f_bgr_1, emit_3ub_3f_bgr_2, emit_3ub_3f_bgr_3,
emit_3ub_3f_bgr_3 } },
{ "4ub_4f_rgba", GL_UNSIGNED_BYTE, GL_FALSE,
{ emit_4ub_4f_rgba_1, emit_4ub_4f_rgba_2, emit_4ub_4f_rgba_3,
emit_4ub_4f_rgba_4 } },
{ "4ub_4f_bgra", GL_UNSIGNED_BYTE, GL_FALSE,
{ emit_4ub_4f_bgra_1, emit_4ub_4f_bgra_2, emit_4ub_4f_bgra_3,
emit_4ub_4f_bgra_4 } },
{ "4chan_4f_rgba", CHAN_TYPE, GL_FALSE,
{ emit_4chan_4f_rgba_1, emit_4chan_4f_rgba_2, emit_4chan_4f_rgba_3,
emit_4chan_4f_rgba_4 } },
{ "pad", 0, 0,
{ 0, 0, 0, 0 } }
};
/***********************************************************************
* list(attrib, size) --> function
*
* Because of the dependence of size, this all has to take place after
* the pipeline has been run.
*/
emit_func _tnl_codegen_emit( GLcontext *ctx )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
struct tnl_clipspace_attr *a = vtx->attr;
struct tnl_clipspace_codegen *p = &vtx->codegen;
const GLuint count = vtx->attr_count;
GLuint j;
/* Need a faster lookup, or is this linear scan of an MRU list good
* enough? MRU chosen based on the guess that consecutive VB's are
* likely to be of the same format. A hash of attributes and sizes
* might be a better technique.
*
* With the vtx code now in place, it should be possible to track
* changes to the sizes of input arrays (and state, of course) and
* only invalidate this function when those sizes have changed.
*/
#if 0
foreach (l, p->codegen_list) {
if (l->attr_count != count)
continue;
/* Assumptions:
* a[j].vp will not change for a given attrib
* a[j].vertex_offset will not change nothing else has changed.
*/
for (j = 0; j < count; j++)
if (a[j].attrib != l->a[j].attrib ||
a[j].sz != l->a[j].sz)
break;
if (j == count) {
move_to_head(l, p->codegen_list);
return l->func;
}
}
#endif
p->emit_header( p, vtx );
for (j = 0; j < count; j++) {
GLuint sz = VB->AttribPtr[a[j].attrib]->size - 1;
p->emit_attr_header( p, a, j,
emit_info[a[j].format].out_type,
emit_info[a[j].format].need_vp );
if (!emit_info[a[j].format].emit[sz]( p )) {
fprintf(stderr, "codegen failed\n");
return 0;
}
p->emit_attr_footer( p );
}
p->emit_footer( p );
return p->emit_store_func( p );
}