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/*
* Copyright (C) 2009-2010 Francisco Jerez.
* 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, sublicense, 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 NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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.
*
*/
/*
* Vertex submission helper definitions shared among the software and
* hardware TnL paths.
*/
#include "nouveau_gldefs.h"
#include "main/light.h"
#include "vbo/vbo.h"
#include "tnl/tnl.h"
#define OUT_INDICES_L(r, i, d, n) \
BATCH_OUT_L(i + d, n); \
(void)r
#define OUT_INDICES_I16(r, i, d, n) \
BATCH_OUT_I16(r->ib.extract_u(&r->ib, 0, i) + d, \
r->ib.extract_u(&r->ib, 0, i + 1) + d)
#define OUT_INDICES_I32(r, i, d, n) \
BATCH_OUT_I32(r->ib.extract_u(&r->ib, 0, i) + d)
/*
* Emit <n> vertices using BATCH_OUT_<out>, MAX_OUT_<out> at a time,
* grouping them in packets of length MAX_PACKET.
*
* out: hardware index data type.
* ctx: GL context.
* start: element within the index buffer to begin with.
* delta: integer correction that will be added to each index found in
* the index buffer.
*/
#define EMIT_VBO(out, ctx, start, delta, n) do { \
struct nouveau_render_state *render = to_render_state(ctx); \
int _npush = n; \
\
while (_npush) { \
int _npack = MIN2(_npush, MAX_PACKET * MAX_OUT_##out); \
_npush -= _npack; \
\
BATCH_PACKET_##out((_npack + MAX_OUT_##out - 1) \
/ MAX_OUT_##out); \
while (_npack) { \
int _nout = MIN2(_npack, MAX_OUT_##out);\
_npack -= _nout; \
\
OUT_INDICES_##out(render, start, delta, \
_nout); \
start += _nout; \
} \
} \
} while (0)
/*
* Emit the <n>-th element of the array <a>, using IMM_OUT.
*/
#define EMIT_IMM(ctx, a, n) do { \
struct nouveau_attr_info *info = \
&TAG(vertex_attrs)[(a)->attr]; \
int m; \
\
if (!info->emit) { \
IMM_PACKET(info->imm_method, info->imm_fields); \
\
for (m = 0; m < (a)->fields; m++) \
IMM_OUT((a)->extract_f(a, n, m)); \
\
for (m = (a)->fields; m < info->imm_fields; m++) \
IMM_OUT(((float []){0, 0, 0, 1})[m]); \
\
} else { \
info->emit(ctx, a, (a)->buf + n * (a)->stride); \
} \
} while (0)
static void
dispatch_l(struct gl_context *ctx, unsigned int start, int delta,
unsigned int n)
{
struct nouveau_pushbuf *push = context_push(ctx);
RENDER_LOCALS(ctx);
EMIT_VBO(L, ctx, start, delta, n);
}
static void
dispatch_i32(struct gl_context *ctx, unsigned int start, int delta,
unsigned int n)
{
struct nouveau_pushbuf *push = context_push(ctx);
RENDER_LOCALS(ctx);
EMIT_VBO(I32, ctx, start, delta, n);
}
static void
dispatch_i16(struct gl_context *ctx, unsigned int start, int delta,
unsigned int n)
{
struct nouveau_pushbuf *push = context_push(ctx);
RENDER_LOCALS(ctx);
EMIT_VBO(I32, ctx, start, delta, n & 1);
EMIT_VBO(I16, ctx, start, delta, n & ~1);
}
/*
* Select an appropriate dispatch function for the given index buffer.
*/
static dispatch_t
get_array_dispatch(struct nouveau_array *a)
{
if (!a->fields)
return dispatch_l;
else if (a->type == GL_UNSIGNED_INT)
return dispatch_i32;
else
return dispatch_i16;
}
/*
* Returns how many vertices you can draw using <n> pushbuf dwords.
*/
static inline unsigned
get_max_vertices(struct gl_context *ctx, const struct _mesa_index_buffer *ib,
int n)
{
struct nouveau_render_state *render = to_render_state(ctx);
if (render->mode == IMM) {
return MAX2(0, n - 4) / (render->vertex_size / 4 +
render->attr_count);
} else {
unsigned max_out;
if (ib) {
switch (ib->type) {
case GL_UNSIGNED_INT:
max_out = MAX_OUT_I32;
break;
case GL_UNSIGNED_SHORT:
max_out = MAX_OUT_I16;
break;
case GL_UNSIGNED_BYTE:
max_out = MAX_OUT_I16;
break;
default:
assert(0);
max_out = 0;
break;
}
} else {
max_out = MAX_OUT_L;
}
return MAX2(0, n - 7) * max_out * MAX_PACKET / (1 + MAX_PACKET);
}
}
static void
TAG(emit_material)(struct gl_context *ctx, struct nouveau_array *a,
const void *v)
{
int attr = a->attr - VERT_ATTRIB_GENERIC0;
int state = ((int []) {
NOUVEAU_STATE_MATERIAL_FRONT_AMBIENT,
NOUVEAU_STATE_MATERIAL_BACK_AMBIENT,
NOUVEAU_STATE_MATERIAL_FRONT_DIFFUSE,
NOUVEAU_STATE_MATERIAL_BACK_DIFFUSE,
NOUVEAU_STATE_MATERIAL_FRONT_SPECULAR,
NOUVEAU_STATE_MATERIAL_BACK_SPECULAR,
NOUVEAU_STATE_MATERIAL_FRONT_AMBIENT,
NOUVEAU_STATE_MATERIAL_BACK_AMBIENT,
NOUVEAU_STATE_MATERIAL_FRONT_SHININESS,
NOUVEAU_STATE_MATERIAL_BACK_SHININESS
}) [attr];
COPY_4V(ctx->Light.Material.Attrib[attr], (float *)v);
_mesa_update_material(ctx, 1 << attr);
context_drv(ctx)->emit[state](ctx, state);
}
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