233 lines
7.3 KiB
C
233 lines
7.3 KiB
C
/**************************************************************************
|
|
*
|
|
* Copyright 2003 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.
|
|
*
|
|
**************************************************************************/
|
|
|
|
#include "util/u_math.h"
|
|
#include "util/u_memory.h"
|
|
#include "pipe/p_shader_tokens.h"
|
|
#include "draw/draw_context.h"
|
|
#include "draw/draw_vertex.h"
|
|
#include "draw/draw_private.h"
|
|
#include "lp_context.h"
|
|
#include "lp_screen.h"
|
|
#include "lp_state.h"
|
|
|
|
|
|
/**
|
|
* Mark the current vertex layout as "invalid".
|
|
* We'll validate the vertex layout later, when we start to actually
|
|
* render a point or line or tri.
|
|
*/
|
|
static void
|
|
invalidate_vertex_layout(struct llvmpipe_context *llvmpipe)
|
|
{
|
|
llvmpipe->vertex_info.num_attribs = 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* The vertex info describes how to convert the post-transformed vertices
|
|
* (simple float[][4]) used by the 'draw' module into vertices for
|
|
* rasterization.
|
|
*
|
|
* This function validates the vertex layout and returns a pointer to a
|
|
* vertex_info object.
|
|
*/
|
|
struct vertex_info *
|
|
llvmpipe_get_vertex_info(struct llvmpipe_context *llvmpipe)
|
|
{
|
|
struct vertex_info *vinfo = &llvmpipe->vertex_info;
|
|
|
|
if (vinfo->num_attribs == 0) {
|
|
/* compute vertex layout now */
|
|
const struct lp_fragment_shader *lpfs = llvmpipe->fs;
|
|
struct vertex_info *vinfo_vbuf = &llvmpipe->vertex_info_vbuf;
|
|
const uint num = draw_current_shader_outputs(llvmpipe->draw);
|
|
uint i;
|
|
|
|
/* Tell draw_vbuf to simply emit the whole post-xform vertex
|
|
* as-is. No longer any need to try and emit draw vertex_header
|
|
* info.
|
|
*/
|
|
vinfo_vbuf->num_attribs = 0;
|
|
for (i = 0; i < num; i++) {
|
|
draw_emit_vertex_attr(vinfo_vbuf, EMIT_4F, INTERP_PERSPECTIVE, i);
|
|
}
|
|
draw_compute_vertex_size(vinfo_vbuf);
|
|
|
|
/*
|
|
* Loop over fragment shader inputs, searching for the matching output
|
|
* from the vertex shader.
|
|
*/
|
|
vinfo->num_attribs = 0;
|
|
for (i = 0; i < lpfs->info.num_inputs; i++) {
|
|
int src;
|
|
enum interp_mode interp;
|
|
|
|
switch (lpfs->info.input_interpolate[i]) {
|
|
case TGSI_INTERPOLATE_CONSTANT:
|
|
interp = INTERP_CONSTANT;
|
|
break;
|
|
case TGSI_INTERPOLATE_LINEAR:
|
|
interp = INTERP_LINEAR;
|
|
break;
|
|
case TGSI_INTERPOLATE_PERSPECTIVE:
|
|
interp = INTERP_PERSPECTIVE;
|
|
break;
|
|
default:
|
|
assert(0);
|
|
interp = INTERP_LINEAR;
|
|
}
|
|
|
|
switch (lpfs->info.input_semantic_name[i]) {
|
|
case TGSI_SEMANTIC_POSITION:
|
|
interp = INTERP_POS;
|
|
break;
|
|
|
|
case TGSI_SEMANTIC_COLOR:
|
|
if (llvmpipe->rasterizer->flatshade) {
|
|
interp = INTERP_CONSTANT;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* this includes texcoords and varying vars */
|
|
src = draw_find_shader_output(llvmpipe->draw,
|
|
lpfs->info.input_semantic_name[i],
|
|
lpfs->info.input_semantic_index[i]);
|
|
draw_emit_vertex_attr(vinfo, EMIT_4F, interp, src);
|
|
}
|
|
|
|
llvmpipe->psize_slot = draw_find_shader_output(llvmpipe->draw,
|
|
TGSI_SEMANTIC_PSIZE, 0);
|
|
if (llvmpipe->psize_slot > 0) {
|
|
draw_emit_vertex_attr(vinfo, EMIT_4F, INTERP_CONSTANT,
|
|
llvmpipe->psize_slot);
|
|
}
|
|
|
|
draw_compute_vertex_size(vinfo);
|
|
}
|
|
|
|
return vinfo;
|
|
}
|
|
|
|
|
|
/**
|
|
* Called from vbuf module.
|
|
*
|
|
* Note that there's actually two different vertex layouts in llvmpipe.
|
|
*
|
|
* The normal one is computed in llvmpipe_get_vertex_info() above and is
|
|
* used by the point/line/tri "setup" code.
|
|
*
|
|
* The other one (this one) is only used by the vbuf module (which is
|
|
* not normally used by default but used in testing). For the vbuf module,
|
|
* we basically want to pass-through the draw module's vertex layout as-is.
|
|
* When the llvmpipe vbuf code begins drawing, the normal vertex layout
|
|
* will come into play again.
|
|
*/
|
|
struct vertex_info *
|
|
llvmpipe_get_vbuf_vertex_info(struct llvmpipe_context *llvmpipe)
|
|
{
|
|
(void) llvmpipe_get_vertex_info(llvmpipe);
|
|
return &llvmpipe->vertex_info_vbuf;
|
|
}
|
|
|
|
|
|
/**
|
|
* Recompute cliprect from scissor bounds, scissor enable and surface size.
|
|
*/
|
|
static void
|
|
compute_cliprect(struct llvmpipe_context *lp)
|
|
{
|
|
/* LP_NEW_FRAMEBUFFER
|
|
*/
|
|
uint surfWidth = lp->framebuffer.width;
|
|
uint surfHeight = lp->framebuffer.height;
|
|
|
|
/* LP_NEW_RASTERIZER
|
|
*/
|
|
if (lp->rasterizer->scissor) {
|
|
|
|
/* LP_NEW_SCISSOR
|
|
*
|
|
* clip to scissor rect:
|
|
*/
|
|
lp->cliprect.minx = MAX2(lp->scissor.minx, 0);
|
|
lp->cliprect.miny = MAX2(lp->scissor.miny, 0);
|
|
lp->cliprect.maxx = MIN2(lp->scissor.maxx, surfWidth);
|
|
lp->cliprect.maxy = MIN2(lp->scissor.maxy, surfHeight);
|
|
}
|
|
else {
|
|
/* clip to surface bounds */
|
|
lp->cliprect.minx = 0;
|
|
lp->cliprect.miny = 0;
|
|
lp->cliprect.maxx = surfWidth;
|
|
lp->cliprect.maxy = surfHeight;
|
|
}
|
|
}
|
|
|
|
|
|
/* Hopefully this will remain quite simple, otherwise need to pull in
|
|
* something like the state tracker mechanism.
|
|
*/
|
|
void llvmpipe_update_derived( struct llvmpipe_context *llvmpipe )
|
|
{
|
|
struct llvmpipe_screen *lp_screen = llvmpipe_screen(llvmpipe->pipe.screen);
|
|
|
|
/* Check for updated textures.
|
|
*/
|
|
if (llvmpipe->tex_timestamp != lp_screen->timestamp) {
|
|
llvmpipe->tex_timestamp = lp_screen->timestamp;
|
|
llvmpipe->dirty |= LP_NEW_TEXTURE;
|
|
}
|
|
|
|
if (llvmpipe->dirty & (LP_NEW_SAMPLER |
|
|
LP_NEW_TEXTURE)) {
|
|
/* TODO */
|
|
}
|
|
|
|
if (llvmpipe->dirty & (LP_NEW_RASTERIZER |
|
|
LP_NEW_FS |
|
|
LP_NEW_VS))
|
|
invalidate_vertex_layout( llvmpipe );
|
|
|
|
if (llvmpipe->dirty & (LP_NEW_SCISSOR |
|
|
LP_NEW_RASTERIZER |
|
|
LP_NEW_FRAMEBUFFER))
|
|
compute_cliprect(llvmpipe);
|
|
|
|
if (llvmpipe->dirty & (LP_NEW_FS |
|
|
LP_NEW_BLEND |
|
|
LP_NEW_DEPTH_STENCIL_ALPHA |
|
|
LP_NEW_SAMPLER |
|
|
LP_NEW_TEXTURE))
|
|
llvmpipe_update_fs( llvmpipe );
|
|
|
|
|
|
llvmpipe->dirty = 0;
|
|
}
|