/**
* Polygon stipple stage: implement polygon stipple with texture map and
- * fragment program. The fragment program samples the texture and does
- * a fragment kill for the stipple-failing fragments.
+ * fragment program. The fragment program samples the texture using the
+ * fragment window coordinate register and does a fragment kill for the
+ * stipple-failing fragments.
*
* Authors: Brian Paul
*/
/**
* Subclass of tgsi_transform_context, used for transforming the
- * user's fragment shader to add the special AA instructions.
+ * user's fragment shader to add the extra texture sample and fragment kill
+ * instructions.
*/
struct pstip_transform_context {
struct tgsi_transform_context base;
}
+/**
+ * TGSI immediate declaration transform callback.
+ * We're just counting the number of immediates here.
+ */
static void
pstip_transform_immed(struct tgsi_transform_context *ctx,
struct tgsi_full_immediate *immed)
{
struct pstip_transform_context *pctx = (struct pstip_transform_context *) ctx;
+ ctx->emit_immediate(ctx, immed); /* emit to output shader */
pctx->numImmed++;
}
/* declare new position input reg */
decl = tgsi_default_full_declaration();
decl.Declaration.File = TGSI_FILE_INPUT;
- decl.Declaration.Interpolate = TGSI_INTERPOLATE_LINEAR; /* XXX? */
+ decl.Declaration.Interpolate = 1;
decl.Declaration.Semantic = 1;
decl.Semantic.Name = TGSI_SEMANTIC_POSITION;
decl.Semantic.Index = 0;
decl.Range.First =
decl.Range.Last = wincoordInput;
+ decl.Interp.Interpolate = TGSI_INTERPOLATE_LINEAR; /* XXX? */
ctx->emit_declaration(ctx, &decl);
}
/*
- * Insert new MUL/TEX/KILP instructions at start of program
+ * Insert new MUL/TEX/KILL_IF instructions at start of program
* Take gl_FragCoord, divide by 32 (stipple size), sample the
* texture and kill fragment if needed.
*
newInst.Src[1].Register.Index = pctx->freeSampler;
ctx->emit_instruction(ctx, &newInst);
- /* KIL -texTemp; # if -texTemp < 0, KILL fragment */
+ /* KILL_IF -texTemp; # if -texTemp < 0, KILL fragment */
newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_KIL;
+ newInst.Instruction.Opcode = TGSI_OPCODE_KILL_IF;
newInst.Instruction.NumDstRegs = 0;
newInst.Instruction.NumSrcRegs = 1;
newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
tgsi_dump(pstip_fs.tokens, 0);
#endif
+ assert(pstip->fs);
+
pstip->fs->sampler_unit = transform.freeSampler;
assert(pstip->fs->sampler_unit < PIPE_MAX_SAMPLERS);
pstip->fs->pstip_fs = pstip->driver_create_fs_state(pstip->pipe, &pstip_fs);
-
+
FREE((void *)pstip_fs.tokens);
+
+ if (!pstip->fs->pstip_fs)
+ return FALSE;
+
return TRUE;
}
uint i, j;
ubyte *data;
- /* XXX: want to avoid flushing just because we use stipple:
- *
- * Flush should no longer be necessary if driver is properly
- * interleaving drawing and transfers on a given context:
- */
- pipe->flush( pipe, PIPE_FLUSH_TEXTURE_CACHE, NULL );
-
- transfer = pipe_get_transfer(pipe, pstip->texture, 0, 0, 0,
- PIPE_TRANSFER_WRITE, 0, 0, 32, 32);
- data = pipe->transfer_map(pipe, transfer);
+ data = pipe_transfer_map(pipe, pstip->texture, 0, 0,
+ PIPE_TRANSFER_WRITE, 0, 0, 32, 32, &transfer);
/*
* Load alpha texture.
* Note: 0 means keep the fragment, 255 means kill it.
- * We'll negate the texel value and use KILP which kills if value
+ * We'll negate the texel value and use KILL_IF which kills if value
* is negative.
*/
for (i = 0; i < 32; i++) {
}
/* unmap */
- pipe->transfer_unmap(pipe, transfer);
- pipe->transfer_destroy(pipe, transfer);
+ pipe_transfer_unmap(pipe, transfer);
}
texTemp.width0 = 32;
texTemp.height0 = 32;
texTemp.depth0 = 1;
+ texTemp.array_size = 1;
texTemp.bind = PIPE_BIND_SAMPLER_VIEW;
pstip->texture = screen->resource_create(screen, &texTemp);
/* restore original frag shader, texture, sampler state */
draw->suspend_flushing = TRUE;
- pstip->driver_bind_fs_state(pipe, pstip->fs->driver_fs);
+ pstip->driver_bind_fs_state(pipe, pstip->fs ? pstip->fs->driver_fs : NULL);
pstip->driver_bind_sampler_states(pipe, pstip->num_samplers,
pstip->state.samplers);
pstip->driver_set_sampler_views(pipe,
}
+/** Create a new polygon stipple drawing stage object */
static struct pstip_stage *
-draw_pstip_stage(struct draw_context *draw)
+draw_pstip_stage(struct draw_context *draw, struct pipe_context *pipe)
{
struct pstip_stage *pstip = CALLOC_STRUCT(pstip_stage);
+ if (pstip == NULL)
+ goto fail;
- draw_alloc_temp_verts( &pstip->stage, 8 );
+ pstip->pipe = pipe;
pstip->stage.draw = draw;
pstip->stage.name = "pstip";
pstip->stage.reset_stipple_counter = pstip_reset_stipple_counter;
pstip->stage.destroy = pstip_destroy;
+ if (!draw_alloc_temp_verts( &pstip->stage, 8 ))
+ goto fail;
+
return pstip;
+
+fail:
+ if (pstip)
+ pstip->stage.destroy( &pstip->stage );
+
+ return NULL;
}
const struct pipe_shader_state *fs)
{
struct pstip_stage *pstip = pstip_stage_from_pipe(pipe);
- struct pstip_fragment_shader *aafs = CALLOC_STRUCT(pstip_fragment_shader);
+ struct pstip_fragment_shader *pstipfs = CALLOC_STRUCT(pstip_fragment_shader);
- if (aafs) {
- aafs->state = *fs;
+ if (pstipfs) {
+ pstipfs->state = *fs;
/* pass-through */
- aafs->driver_fs = pstip->driver_create_fs_state(pstip->pipe, fs);
+ pstipfs->driver_fs = pstip->driver_create_fs_state(pstip->pipe, fs);
}
- return aafs;
+ return pstipfs;
}
pstip_bind_fs_state(struct pipe_context *pipe, void *fs)
{
struct pstip_stage *pstip = pstip_stage_from_pipe(pipe);
- struct pstip_fragment_shader *aafs = (struct pstip_fragment_shader *) fs;
+ struct pstip_fragment_shader *pstipfs = (struct pstip_fragment_shader *) fs;
/* save current */
- pstip->fs = aafs;
+ pstip->fs = pstipfs;
/* pass-through */
pstip->driver_bind_fs_state(pstip->pipe,
- (aafs ? aafs->driver_fs : NULL));
+ (pstipfs ? pstipfs->driver_fs : NULL));
}
pstip_delete_fs_state(struct pipe_context *pipe, void *fs)
{
struct pstip_stage *pstip = pstip_stage_from_pipe(pipe);
- struct pstip_fragment_shader *aafs = (struct pstip_fragment_shader *) fs;
+ struct pstip_fragment_shader *pstipfs = (struct pstip_fragment_shader *) fs;
/* pass-through */
- pstip->driver_delete_fs_state(pstip->pipe, aafs->driver_fs);
+ pstip->driver_delete_fs_state(pstip->pipe, pstipfs->driver_fs);
- if (aafs->pstip_fs)
- pstip->driver_delete_fs_state(pstip->pipe, aafs->pstip_fs);
+ if (pstipfs->pstip_fs)
+ pstip->driver_delete_fs_state(pstip->pipe, pstipfs->pstip_fs);
- FREE(aafs);
+ FREE(pstipfs);
}
/*
* Create / install pgon stipple drawing / prim stage
*/
- pstip = draw_pstip_stage( draw );
+ pstip = draw_pstip_stage( draw, pipe );
if (pstip == NULL)
goto fail;
draw->pipeline.pstipple = &pstip->stage;
- pstip->pipe = pipe;
-
/* create special texture, sampler state */
if (!pstip_create_texture(pstip))
goto fail;
projects / mesa.git / blobdiff