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/**********************************************************
* Copyright 2008-2009 VMware, 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 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 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 AUTHORS OR COPYRIGHT HOLDERS
* 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.
*
**********************************************************/
#include "draw/draw_context.h"
#include "draw/draw_vbuf.h"
#include "util/u_inlines.h"
#include "pipe/p_state.h"
#include "svga_context.h"
#include "svga_swtnl.h"
#include "svga_state.h"
#include "svga_swtnl_private.h"
#define SVGA_POINT_ADJ_X -0.375
#define SVGA_POINT_ADJ_Y -0.5
#define SVGA_LINE_ADJ_X -0.5
#define SVGA_LINE_ADJ_Y -0.5
#define SVGA_TRIANGLE_ADJ_X -0.375
#define SVGA_TRIANGLE_ADJ_Y -0.5
static void set_draw_viewport( struct svga_context *svga )
{
struct pipe_viewport_state vp = svga->curr.viewport;
float adjx = 0;
float adjy = 0;
switch (svga->curr.reduced_prim) {
case PIPE_PRIM_POINTS:
adjx = SVGA_POINT_ADJ_X;
adjy = SVGA_POINT_ADJ_Y;
break;
case PIPE_PRIM_LINES:
/* XXX: This is to compensate for the fact that wide lines are
* going to be drawn with triangles, but we're not catching all
* cases where that will happen.
*/
if (svga->curr.rast->templ.line_width > 1.0)
{
adjx = SVGA_LINE_ADJ_X + 0.175;
adjy = SVGA_LINE_ADJ_Y - 0.175;
}
else {
adjx = SVGA_LINE_ADJ_X;
adjy = SVGA_LINE_ADJ_Y;
}
break;
case PIPE_PRIM_TRIANGLES:
adjx += SVGA_TRIANGLE_ADJ_X;
adjy += SVGA_TRIANGLE_ADJ_Y;
break;
}
vp.translate[0] += adjx;
vp.translate[1] += adjy;
draw_set_viewport_state(svga->swtnl.draw, &vp);
}
static int update_swtnl_draw( struct svga_context *svga,
unsigned dirty )
{
draw_flush( svga->swtnl.draw );
if (dirty & SVGA_NEW_VS)
draw_bind_vertex_shader(svga->swtnl.draw,
svga->curr.vs->draw_shader);
if (dirty & SVGA_NEW_VBUFFER)
draw_set_vertex_buffers(svga->swtnl.draw,
svga->curr.num_vertex_buffers,
svga->curr.vb);
if (dirty & SVGA_NEW_VELEMENT)
draw_set_vertex_elements(svga->swtnl.draw,
svga->curr.num_vertex_elements,
svga->curr.ve );
if (dirty & SVGA_NEW_CLIP)
draw_set_clip_state(svga->swtnl.draw,
&svga->curr.clip);
if (dirty & (SVGA_NEW_VIEWPORT |
SVGA_NEW_REDUCED_PRIMITIVE |
SVGA_NEW_RAST))
set_draw_viewport( svga );
if (dirty & SVGA_NEW_RAST)
draw_set_rasterizer_state(svga->swtnl.draw,
&svga->curr.rast->templ);
if (dirty & SVGA_NEW_FRAME_BUFFER)
draw_set_mrd(svga->swtnl.draw,
svga->curr.depthscale);
return 0;
}
struct svga_tracked_state svga_update_swtnl_draw =
{
"update draw module state",
(SVGA_NEW_VS |
SVGA_NEW_VBUFFER |
SVGA_NEW_VELEMENT |
SVGA_NEW_CLIP |
SVGA_NEW_VIEWPORT |
SVGA_NEW_RAST |
SVGA_NEW_FRAME_BUFFER |
SVGA_NEW_REDUCED_PRIMITIVE),
update_swtnl_draw
};
int svga_swtnl_update_vdecl( struct svga_context *svga )
{
struct svga_vbuf_render *svga_render = svga_vbuf_render(svga->swtnl.backend);
struct draw_context *draw = svga->swtnl.draw;
struct vertex_info *vinfo = &svga_render->vertex_info;
SVGA3dVertexDecl vdecl[PIPE_MAX_ATTRIBS];
const enum interp_mode colorInterp =
svga->curr.rast->templ.flatshade ? INTERP_CONSTANT : INTERP_LINEAR;
const struct svga_fragment_shader *fs = svga->curr.fs;
int offset = 0;
int nr_decls = 0;
int src, i;
memset(vinfo, 0, sizeof(*vinfo));
memset(vdecl, 0, sizeof(vdecl));
/* always add position */
src = draw_find_shader_output(draw, TGSI_SEMANTIC_POSITION, 0);
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_LINEAR, src);
vinfo->attrib[0].emit = EMIT_4F;
vdecl[0].array.offset = offset;
vdecl[0].identity.type = SVGA3D_DECLTYPE_FLOAT4;
vdecl[0].identity.usage = SVGA3D_DECLUSAGE_POSITIONT;
vdecl[0].identity.usageIndex = 0;
offset += 16;
nr_decls++;
for (i = 0; i < fs->base.info.num_inputs; i++) {
unsigned name = fs->base.info.input_semantic_name[i];
unsigned index = fs->base.info.input_semantic_index[i];
src = draw_find_shader_output(draw, name, index);
vdecl[nr_decls].array.offset = offset;
vdecl[nr_decls].identity.usageIndex = fs->base.info.input_semantic_index[i];
switch (name) {
case TGSI_SEMANTIC_COLOR:
draw_emit_vertex_attr(vinfo, EMIT_4F, colorInterp, src);
vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_COLOR;
vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
offset += 16;
nr_decls++;
break;
case TGSI_SEMANTIC_GENERIC:
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_PERSPECTIVE, src);
vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT4;
vdecl[nr_decls].identity.usageIndex += 1;
offset += 16;
nr_decls++;
break;
case TGSI_SEMANTIC_FOG:
draw_emit_vertex_attr(vinfo, EMIT_1F, INTERP_PERSPECTIVE, src);
vdecl[nr_decls].identity.usage = SVGA3D_DECLUSAGE_TEXCOORD;
vdecl[nr_decls].identity.type = SVGA3D_DECLTYPE_FLOAT1;
assert(vdecl[nr_decls].identity.usageIndex == 0);
offset += 4;
nr_decls++;
break;
case TGSI_SEMANTIC_POSITION:
/* generated internally, not a vertex shader output */
break;
default:
assert(0);
}
}
draw_compute_vertex_size(vinfo);
svga_render->vdecl_count = nr_decls;
for (i = 0; i < svga_render->vdecl_count; i++)
vdecl[i].array.stride = offset;
if (memcmp(svga_render->vdecl, vdecl, sizeof(vdecl)) == 0)
return 0;
memcpy(svga_render->vdecl, vdecl, sizeof(vdecl));
svga->swtnl.new_vdecl = TRUE;
return 0;
}
static int update_swtnl_vdecl( struct svga_context *svga,
unsigned dirty )
{
return svga_swtnl_update_vdecl( svga );
}
struct svga_tracked_state svga_update_swtnl_vdecl =
{
"update draw module vdecl",
(SVGA_NEW_VS |
SVGA_NEW_FS),
update_swtnl_vdecl
};
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