void r600_draw_rectangle(struct blitter_context *blitter,
int x1, int y1, int x2, int y2, float depth,
enum blitter_attrib_type type,
const union pipe_color_union *attrib)
{
struct r600_common_context *rctx =
(struct r600_common_context*)util_blitter_get_pipe(blitter);
struct pipe_viewport_state viewport;
struct pipe_resource *buf = NULL;
unsigned offset = 0;
float *vb;
if (type == UTIL_BLITTER_ATTRIB_TEXCOORD) {
util_blitter_draw_rectangle(blitter, x1, y1, x2, y2, depth, type, attrib);
return;
}
/* Some operations (like color resolve on r6xx) don't work
* with the conventional primitive types.
* One that works is PT_RECTLIST, which we use here. */
/* setup viewport */
viewport.scale[0] = 1.0f;
viewport.scale[1] = 1.0f;
viewport.scale[2] = 1.0f;
viewport.translate[0] = 0.0f;
viewport.translate[1] = 0.0f;
viewport.translate[2] = 0.0f;
rctx->b.set_viewport_states(&rctx->b, 0, 1, &viewport);
/* Upload vertices. The hw rectangle has only 3 vertices,
* I guess the 4th one is derived from the first 3.
* The vertex specification should match u_blitter's vertex element state. */
u_upload_alloc(rctx->uploader, 0, sizeof(float) * 24, &offset, &buf, (void**)&vb);
vb[0] = x1;
vb[1] = y1;
vb[2] = depth;
vb[3] = 1;
vb[8] = x1;
vb[9] = y2;
vb[10] = depth;
vb[11] = 1;
vb[16] = x2;
vb[17] = y1;
vb[18] = depth;
vb[19] = 1;
if (attrib) {
memcpy(vb+4, attrib->f, sizeof(float)*4);
memcpy(vb+12, attrib->f, sizeof(float)*4);
memcpy(vb+20, attrib->f, sizeof(float)*4);
}
/* draw */
util_draw_vertex_buffer(&rctx->b, NULL, buf, blitter->vb_slot, offset,
R600_PRIM_RECTANGLE_LIST, 3, 2);
pipe_resource_reference(&buf, NULL);
}
/* This functions is used to draw a rectangle for the blitter module.
*
* If we rendered a quad, the pixels on the main diagonal
* would be computed and stored twice, which makes the clear/copy codepaths
* somewhat inefficient. Instead we use a rectangular point sprite. */
void r300_blitter_draw_rectangle(struct blitter_context *blitter,
int x1, int y1, int x2, int y2,
float depth,
enum blitter_attrib_type type,
const union pipe_color_union *attrib)
{
struct r300_context *r300 = r300_context(util_blitter_get_pipe(blitter));
unsigned last_sprite_coord_enable = r300->sprite_coord_enable;
unsigned width = x2 - x1;
unsigned height = y2 - y1;
unsigned vertex_size =
type == UTIL_BLITTER_ATTRIB_COLOR || !r300->draw ? 8 : 4;
unsigned dwords = 13 + vertex_size +
(type == UTIL_BLITTER_ATTRIB_TEXCOORD ? 7 : 0);
static const union pipe_color_union zeros;
CS_LOCALS(r300);
/* XXX workaround for a lockup in MSAA resolve on SWTCL chipsets, this
* function most probably doesn't handle type=NONE correctly */
if (!r300->screen->caps.has_tcl && type == UTIL_BLITTER_ATTRIB_NONE) {
util_blitter_draw_rectangle(blitter, x1, y1, x2, y2, depth, type, attrib);
return;
}
if (r300->skip_rendering)
return;
if (type == UTIL_BLITTER_ATTRIB_TEXCOORD)
r300->sprite_coord_enable = 1;
r300_update_derived_state(r300);
/* Mark some states we don't care about as non-dirty. */
r300->viewport_state.dirty = FALSE;
if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES, NULL, dwords, 0, 0, -1))
goto done;
DBG(r300, DBG_DRAW, "r300: draw_rectangle\n");
BEGIN_CS(dwords);
/* Set up GA. */
OUT_CS_REG(R300_GA_POINT_SIZE, (height * 6) | ((width * 6) << 16));
if (type == UTIL_BLITTER_ATTRIB_TEXCOORD) {
/* Set up the GA to generate texcoords. */
OUT_CS_REG(R300_GB_ENABLE, R300_GB_POINT_STUFF_ENABLE |
(R300_GB_TEX_STR << R300_GB_TEX0_SOURCE_SHIFT));
OUT_CS_REG_SEQ(R300_GA_POINT_S0, 4);
OUT_CS_32F(attrib->f[0]);
OUT_CS_32F(attrib->f[3]);
OUT_CS_32F(attrib->f[2]);
OUT_CS_32F(attrib->f[1]);
}
/* Set up VAP controls. */
OUT_CS_REG(R300_VAP_CLIP_CNTL, R300_CLIP_DISABLE);
OUT_CS_REG(R300_VAP_VTE_CNTL, R300_VTX_XY_FMT | R300_VTX_Z_FMT);
OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size);
OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2);
OUT_CS(1);
OUT_CS(0);
/* Draw. */
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, vertex_size);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (1 << 16) |
R300_VAP_VF_CNTL__PRIM_POINTS);
OUT_CS_32F(x1 + width * 0.5f);
OUT_CS_32F(y1 + height * 0.5f);
OUT_CS_32F(depth);
OUT_CS_32F(1);
if (vertex_size == 8) {
if (!attrib)
attrib = &zeros;
OUT_CS_TABLE(attrib->f, 4);
}
END_CS;
done:
/* Restore the state. */
r300_mark_atom_dirty(r300, &r300->rs_state);
r300_mark_atom_dirty(r300, &r300->viewport_state);
r300->sprite_coord_enable = last_sprite_coord_enable;
}