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#include "util/u_debug.h"
#include "pipe/p_inlines.h"
#include "pipe/internal/p_winsys_screen.h"
#include "pipe/p_compiler.h"
#include "draw/draw_vbuf.h"
#include "nv04_context.h"
#include "nv04_state.h"
#define VERTEX_SIZE 40
#define VERTEX_BUFFER_SIZE (4096*VERTEX_SIZE) // 4096 vertices of 40 bytes each
/**
* Primitive renderer for nv04.
*/
struct nv04_vbuf_render {
struct vbuf_render base;
struct nv04_context *nv04;
/** Vertex buffer */
unsigned char* buffer;
/** Vertex size in bytes */
unsigned vertex_size;
/** Current primitive */
unsigned prim;
};
/**
* Basically a cast wrapper.
*/
static INLINE struct nv04_vbuf_render *
nv04_vbuf_render( struct vbuf_render *render )
{
assert(render);
return (struct nv04_vbuf_render *)render;
}
static const struct vertex_info *
nv04_vbuf_render_get_vertex_info( struct vbuf_render *render )
{
struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
struct nv04_context *nv04 = nv04_render->nv04;
return &nv04->vertex_info;
}
static boolean
nv04_vbuf_render_allocate_vertices( struct vbuf_render *render,
ushort vertex_size,
ushort nr_vertices )
{
struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
nv04_render->buffer = (unsigned char*) MALLOC(VERTEX_BUFFER_SIZE);
assert(!nv04_render->buffer);
return nv04_render->buffer ? TRUE : FALSE;
}
static void *
nv04_vbuf_render_map_vertices( struct vbuf_render *render )
{
struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
return nv04_render->buffer;
}
static void
nv04_vbuf_render_unmap_vertices( struct vbuf_render *render,
ushort min_index,
ushort max_index )
{
}
static boolean
nv04_vbuf_render_set_primitive( struct vbuf_render *render,
unsigned prim )
{
struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
if (prim <= PIPE_PRIM_LINE_STRIP)
return FALSE;
nv04_render->prim = prim;
return TRUE;
}
static INLINE void nv04_2triangles(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2, ushort v3, ushort v4, ushort v5)
{
BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xA),49);
OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
OUT_RINGp(buffer + VERTEX_SIZE * v3,8);
OUT_RINGp(buffer + VERTEX_SIZE * v4,8);
OUT_RINGp(buffer + VERTEX_SIZE * v5,8);
OUT_RING(0xFEDCBA);
}
static INLINE void nv04_1triangle(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2)
{
BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xD),25);
OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
OUT_RING(0xFED);
}
static INLINE void nv04_1quad(struct nv04_context* nv04, unsigned char* buffer, ushort v0, ushort v1, ushort v2, ushort v3)
{
BEGIN_RING(fahrenheit,NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0xC),33);
OUT_RINGp(buffer + VERTEX_SIZE * v0,8);
OUT_RINGp(buffer + VERTEX_SIZE * v1,8);
OUT_RINGp(buffer + VERTEX_SIZE * v2,8);
OUT_RINGp(buffer + VERTEX_SIZE * v3,8);
OUT_RING(0xFECEDC);
}
static void nv04_vbuf_render_triangles_elts(struct nv04_vbuf_render * render, const ushort * indices, uint nr_indices)
{
unsigned char* buffer = render->buffer;
struct nv04_context* nv04 = render->nv04;
int i;
for( i=0; i< nr_indices-5; i+=6)
nv04_2triangles(nv04,
buffer,
indices[i+0],
indices[i+1],
indices[i+2],
indices[i+3],
indices[i+4],
indices[i+5]
);
if (i != nr_indices)
{
nv04_1triangle(nv04,
buffer,
indices[i+0],
indices[i+1],
indices[i+2]
);
i+=3;
}
if (i != nr_indices)
NOUVEAU_ERR("Houston, we have lost some vertices\n");
}
static void nv04_vbuf_render_tri_strip_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
{
const uint32_t striptbl[]={0x321210,0x543432,0x765654,0x987876,0xBA9A98,0xDCBCBA,0xFEDEDC};
unsigned char* buffer = render->buffer;
struct nv04_context* nv04 = render->nv04;
int i,j;
for(i = 0; i<nr_indices; i+=14)
{
int numvert = MIN2(16, nr_indices - i);
int numtri = numvert - 2;
if (numvert<3)
break;
BEGIN_RING( fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x0), numvert*8 );
for(j = 0; j<numvert; j++)
OUT_RINGp( buffer + VERTEX_SIZE * indices [i+j], 8 );
BEGIN_RING_NI( fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_DRAWPRIMITIVE(0), (numtri+1)/2 );
for(j = 0; j<numtri/2; j++ )
OUT_RING(striptbl[j]);
if (numtri%2)
OUT_RING(striptbl[numtri/2]&0xFFF);
}
}
static void nv04_vbuf_render_tri_fan_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
{
const uint32_t fantbl[]={0x320210,0x540430,0x760650,0x980870,0xBA0A90,0xDC0CB0,0xFE0ED0};
unsigned char* buffer = render->buffer;
struct nv04_context* nv04 = render->nv04;
int i,j;
BEGIN_RING(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x0), 8);
OUT_RINGp(buffer + VERTEX_SIZE * indices[0], 8);
for(i = 1; i<nr_indices; i+=14)
{
int numvert=MIN2(15, nr_indices - i);
int numtri=numvert-2;
if (numvert < 3)
break;
BEGIN_RING(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_SX(0x1), numvert*8);
for(j=0;j<numvert;j++)
OUT_RINGp( buffer + VERTEX_SIZE * indices[ i+j ], 8 );
BEGIN_RING_NI(fahrenheit, NV04_DX5_TEXTURED_TRIANGLE_TLVERTEX_DRAWPRIMITIVE(0), (numtri+1)/2);
for(j = 0; j<numtri/2; j++)
OUT_RING(fantbl[j]);
if (numtri%2)
OUT_RING(fantbl[numtri/2]&0xFFF);
}
}
static void nv04_vbuf_render_quads_elts(struct nv04_vbuf_render* render, const ushort* indices, uint nr_indices)
{
unsigned char* buffer = render->buffer;
struct nv04_context* nv04 = render->nv04;
int i;
for(i = 0; i < nr_indices; i += 4)
nv04_1quad(nv04,
buffer,
indices[i+0],
indices[i+1],
indices[i+2],
indices[i+3]
);
}
static void
nv04_vbuf_render_draw( struct vbuf_render *render,
const ushort *indices,
uint nr_indices)
{
struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
// emit the indices
switch( nv04_render->prim )
{
case PIPE_PRIM_TRIANGLES:
nv04_vbuf_render_triangles_elts(nv04_render, indices, nr_indices);
break;
case PIPE_PRIM_QUAD_STRIP:
case PIPE_PRIM_TRIANGLE_STRIP:
nv04_vbuf_render_tri_strip_elts(nv04_render, indices, nr_indices);
break;
case PIPE_PRIM_TRIANGLE_FAN:
case PIPE_PRIM_POLYGON:
nv04_vbuf_render_tri_fan_elts(nv04_render, indices, nr_indices);
break;
case PIPE_PRIM_QUADS:
nv04_vbuf_render_quads_elts(nv04_render, indices, nr_indices);
break;
default:
NOUVEAU_ERR("You have to implement primitive %d, young padawan\n", nv04_render->prim);
break;
}
}
static void
nv04_vbuf_render_release_vertices( struct vbuf_render *render )
{
struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
free(nv04_render->buffer);
nv04_render->buffer = NULL;
}
static void
nv04_vbuf_render_destroy( struct vbuf_render *render )
{
struct nv04_vbuf_render *nv04_render = nv04_vbuf_render(render);
FREE(nv04_render);
}
/**
* Create a new primitive render.
*/
static struct vbuf_render *
nv04_vbuf_render_create( struct nv04_context *nv04 )
{
struct nv04_vbuf_render *nv04_render = CALLOC_STRUCT(nv04_vbuf_render);
nv04_render->nv04 = nv04;
nv04_render->base.max_vertex_buffer_bytes = VERTEX_BUFFER_SIZE;
nv04_render->base.max_indices = 65536;
nv04_render->base.get_vertex_info = nv04_vbuf_render_get_vertex_info;
nv04_render->base.allocate_vertices = nv04_vbuf_render_allocate_vertices;
nv04_render->base.map_vertices = nv04_vbuf_render_map_vertices;
nv04_render->base.unmap_vertices = nv04_vbuf_render_unmap_vertices;
nv04_render->base.set_primitive = nv04_vbuf_render_set_primitive;
nv04_render->base.draw = nv04_vbuf_render_draw;
nv04_render->base.release_vertices = nv04_vbuf_render_release_vertices;
nv04_render->base.destroy = nv04_vbuf_render_destroy;
return &nv04_render->base;
}
/**
* Create a new primitive vbuf/render stage.
*/
struct draw_stage *nv04_draw_vbuf_stage( struct nv04_context *nv04 )
{
struct vbuf_render *render;
struct draw_stage *stage;
render = nv04_vbuf_render_create(nv04);
if(!render)
return NULL;
stage = draw_vbuf_stage( nv04->draw, render );
if(!stage) {
render->destroy(render);
return NULL;
}
return stage;
}
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