diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_pipe_rast.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_pipe_rast.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_pipe_rast.c b/src/gallium/drivers/i965/brw_pipe_rast.c new file mode 100644 index 0000000000..2117e91a9e --- /dev/null +++ b/src/gallium/drivers/i965/brw_pipe_rast.c @@ -0,0 +1,161 @@ + +#include "util/u_memory.h" +#include "pipe/p_defines.h" +#include "brw_context.h" +#include "brw_defines.h" +#include "brw_pipe_rast.h" +#include "brw_wm.h" + + +static unsigned translate_fill( unsigned fill ) +{ + switch (fill) { + case PIPE_POLYGON_MODE_FILL: + return CLIP_FILL; + case PIPE_POLYGON_MODE_LINE: + return CLIP_LINE; + case PIPE_POLYGON_MODE_POINT: + return CLIP_POINT; + default: + assert(0); + return CLIP_FILL; + } +} + + +/* Calculates the key for triangle-mode clipping. Non-triangle + * clipping keys use much less information and are computed on the + * fly. + */ +static void +calculate_clip_key_rast( const struct brw_context *brw, + const struct pipe_rasterizer_state *templ, + const struct brw_rasterizer_state *rast, + struct brw_clip_prog_key *key) +{ + memset(key, 0, sizeof *key); + + if (brw->chipset.is_igdng) + key->clip_mode = BRW_CLIPMODE_KERNEL_CLIP; + else + key->clip_mode = BRW_CLIPMODE_NORMAL; + + key->do_flat_shading = templ->flatshade; + + if (templ->cull_mode == PIPE_WINDING_BOTH) { + key->clip_mode = BRW_CLIPMODE_REJECT_ALL; + return; + } + + key->fill_ccw = CLIP_CULL; + key->fill_cw = CLIP_CULL; + + if (!(templ->cull_mode & PIPE_WINDING_CCW)) { + key->fill_ccw = translate_fill(templ->fill_ccw); + } + + if (!(templ->cull_mode & PIPE_WINDING_CW)) { + key->fill_cw = translate_fill(templ->fill_cw); + } + + if (key->fill_cw == CLIP_LINE || + key->fill_ccw == CLIP_LINE || + key->fill_cw == CLIP_POINT || + key->fill_ccw == CLIP_POINT) { + key->do_unfilled = 1; + key->clip_mode = BRW_CLIPMODE_CLIP_NON_REJECTED; + } + + key->offset_ccw = templ->offset_ccw; + key->offset_cw = templ->offset_cw; + + if (templ->light_twoside && key->fill_cw != CLIP_CULL) + key->copy_bfc_cw = 1; + + if (templ->light_twoside && key->fill_ccw != CLIP_CULL) + key->copy_bfc_ccw = 1; +} + + +static void +calculate_line_stipple_rast( const struct pipe_rasterizer_state *templ, + struct brw_line_stipple *bls ) +{ + GLfloat tmp = 1.0f / (templ->line_stipple_factor + 1); + GLint tmpi = tmp * (1<<13); + + bls->header.opcode = CMD_LINE_STIPPLE_PATTERN; + bls->header.length = sizeof(*bls)/4 - 2; + bls->bits0.pattern = templ->line_stipple_pattern; + bls->bits1.repeat_count = templ->line_stipple_factor + 1; + bls->bits1.inverse_repeat_count = tmpi; +} + +static void *brw_create_rasterizer_state( struct pipe_context *pipe, + const struct pipe_rasterizer_state *templ ) +{ + struct brw_context *brw = brw_context(pipe); + struct brw_rasterizer_state *rast; + + rast = CALLOC_STRUCT(brw_rasterizer_state); + if (rast == NULL) + return NULL; + + rast->templ = *templ; + + calculate_clip_key_rast( brw, templ, rast, &rast->clip_key ); + + if (templ->line_stipple_enable) + calculate_line_stipple_rast( templ, &rast->bls ); + + /* Caclculate lookup value for WM IZ table. + */ + if (templ->line_smooth) { + if (templ->fill_cw == PIPE_POLYGON_MODE_LINE && + templ->fill_ccw == PIPE_POLYGON_MODE_LINE) { + rast->unfilled_aa_line = AA_ALWAYS; + } + else if (templ->fill_cw == PIPE_POLYGON_MODE_LINE || + templ->fill_ccw == PIPE_POLYGON_MODE_LINE) { + rast->unfilled_aa_line = AA_SOMETIMES; + } + else { + rast->unfilled_aa_line = AA_NEVER; + } + } + else { + rast->unfilled_aa_line = AA_NEVER; + } + + return (void *)rast; +} + + +static void brw_bind_rasterizer_state(struct pipe_context *pipe, + void *cso) +{ + struct brw_context *brw = brw_context(pipe); + brw->curr.rast = (const struct brw_rasterizer_state *)cso; + brw->state.dirty.mesa |= PIPE_NEW_RAST; +} + +static void brw_delete_rasterizer_state(struct pipe_context *pipe, + void *cso) +{ + struct brw_context *brw = brw_context(pipe); + assert((const void *)cso != (const void *)brw->curr.rast); + FREE(cso); +} + + + +void brw_pipe_rast_init( struct brw_context *brw ) +{ + brw->base.create_rasterizer_state = brw_create_rasterizer_state; + brw->base.bind_rasterizer_state = brw_bind_rasterizer_state; + brw->base.delete_rasterizer_state = brw_delete_rasterizer_state; +} + +void brw_pipe_rast_cleanup( struct brw_context *brw ) +{ +} |