* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE. */
-
-#include "r300_hyperz.h"
#include "r300_context.h"
#include "r300_reg.h"
#include "r300_fs.h"
+#include "util/u_format.h"
+#include "util/u_mm.h"
+
+/*
+ HiZ rules - taken from various docs
+ 1. HiZ only works on depth values
+ 2. Cannot HiZ if stencil fail or zfail is !KEEP
+ 3. on R300/400, HiZ is disabled if depth test is EQUAL
+ 4. comparison changes without clears usually mean disabling HiZ
+*/
+/*****************************************************************************/
+/* The HyperZ setup */
+/*****************************************************************************/
+
+static enum r300_hiz_func r300_get_hiz_func(struct r300_context *r300)
+{
+ struct r300_dsa_state *dsa = r300->dsa_state.state;
+
+ switch (dsa->dsa.depth.func) {
+ case PIPE_FUNC_NEVER:
+ case PIPE_FUNC_EQUAL:
+ case PIPE_FUNC_NOTEQUAL:
+ case PIPE_FUNC_ALWAYS:
+ default:
+ /* Guess MAX for uncertain cases. */
+ case PIPE_FUNC_LESS:
+ case PIPE_FUNC_LEQUAL:
+ return HIZ_FUNC_MAX;
+
+ case PIPE_FUNC_GREATER:
+ case PIPE_FUNC_GEQUAL:
+ return HIZ_FUNC_MIN;
+ }
+}
+
+/* Return what's used for the depth test (either minimum or maximum). */
+static unsigned r300_get_sc_hz_max(struct r300_context *r300)
+{
+ struct r300_dsa_state *dsa = r300->dsa_state.state;
+ unsigned func = dsa->dsa.depth.func;
+
+ return func >= PIPE_FUNC_GREATER ? R300_SC_HYPERZ_MAX : R300_SC_HYPERZ_MIN;
+}
+
+static boolean r300_is_hiz_func_valid(struct r300_context *r300)
+{
+ struct r300_dsa_state *dsa = r300->dsa_state.state;
+ unsigned func = dsa->dsa.depth.func;
+
+ if (r300->hiz_func == HIZ_FUNC_NONE)
+ return TRUE;
+
+ /* func1 is less/lessthan */
+ if (r300->hiz_func == HIZ_FUNC_MAX &&
+ (func == PIPE_FUNC_GEQUAL || func == PIPE_FUNC_GREATER))
+ return FALSE;
+
+ /* func1 is greater/greaterthan */
+ if (r300->hiz_func == HIZ_FUNC_MIN &&
+ (func == PIPE_FUNC_LESS || func == PIPE_FUNC_LEQUAL))
+ return FALSE;
+
+ return TRUE;
+}
+
+static boolean r300_dsa_stencil_op_not_keep(struct pipe_stencil_state *s)
+{
+ return s->enabled && (s->fail_op != PIPE_STENCIL_OP_KEEP ||
+ s->zfail_op != PIPE_STENCIL_OP_KEEP);
+}
+
+static boolean r300_hiz_allowed(struct r300_context *r300)
+{
+ struct r300_dsa_state *dsa = r300->dsa_state.state;
+ struct r300_screen *r300screen = r300->screen;
+
+ if (r300_fragment_shader_writes_depth(r300_fs(r300)))
+ return FALSE;
+
+ if (r300->query_current)
+ return FALSE;
+
+ /* If the depth function is inverted, HiZ must be disabled. */
+ if (!r300_is_hiz_func_valid(r300))
+ return FALSE;
+
+ /* if stencil fail/zfail op is not KEEP */
+ if (r300_dsa_stencil_op_not_keep(&dsa->dsa.stencil[0]) ||
+ r300_dsa_stencil_op_not_keep(&dsa->dsa.stencil[1]))
+ return FALSE;
+
+ if (dsa->dsa.depth.enabled) {
+ /* if depth func is EQUAL pre-r500 */
+ if (dsa->dsa.depth.func == PIPE_FUNC_EQUAL && !r300screen->caps.is_r500)
+ return FALSE;
+
+ /* if depth func is NOTEQUAL */
+ if (dsa->dsa.depth.func == PIPE_FUNC_NOTEQUAL)
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static void r300_update_hyperz(struct r300_context* r300)
+{
+ struct r300_hyperz_state *z =
+ (struct r300_hyperz_state*)r300->hyperz_state.state;
+ struct pipe_framebuffer_state *fb =
+ (struct pipe_framebuffer_state*)r300->fb_state.state;
+ struct r300_dsa_state *dsa = r300->dsa_state.state;
+ struct r300_resource *zstex =
+ fb->zsbuf ? r300_resource(fb->zsbuf->texture) : NULL;
+
+ z->gb_z_peq_config = 0;
+ z->zb_bw_cntl = 0;
+ z->sc_hyperz = R300_SC_HYPERZ_ADJ_2;
+ z->flush = 0;
+
+ if (r300->cbzb_clear) {
+ z->zb_bw_cntl |= R300_ZB_CB_CLEAR_CACHE_LINE_WRITE_ONLY;
+ return;
+ }
+
+ if (!zstex || !r300->hyperz_enabled)
+ return;
+
+ /* Set the size of ZMASK tiles. */
+ if (zstex->tex.zcomp8x8[fb->zsbuf->u.tex.level]) {
+ z->gb_z_peq_config |= R300_GB_Z_PEQ_CONFIG_Z_PEQ_SIZE_8_8;
+ }
+
+ /* R500-specific features and optimizations. */
+ if (r300->screen->caps.is_r500) {
+ z->zb_bw_cntl |= R500_PEQ_PACKING_ENABLE |
+ R500_COVERED_PTR_MASKING_ENABLE;
+ }
+
+ /* Setup decompression if needed. No other HyperZ setting is required. */
+ if (r300->zmask_decompress) {
+ z->zb_bw_cntl |= R300_FAST_FILL_ENABLE |
+ R300_RD_COMP_ENABLE;
+ return;
+ }
+
+ /* Do not set anything if depth and stencil tests are off. */
+ if (!dsa->dsa.depth.enabled &&
+ !dsa->dsa.stencil[0].enabled &&
+ !dsa->dsa.stencil[1].enabled) {
+ assert(!dsa->dsa.depth.writemask);
+ return;
+ }
+
+ /* Zbuffer compression. */
+ if (r300->zmask_in_use && !r300->locked_zbuffer) {
+ z->zb_bw_cntl |= R300_FAST_FILL_ENABLE |
+ R300_RD_COMP_ENABLE |
+ R300_WR_COMP_ENABLE;
+ }
+
+ /* HiZ. */
+ if (r300->hiz_in_use && !r300->locked_zbuffer) {
+ /* HiZ cannot be used under some circumstances. */
+ if (!r300_hiz_allowed(r300)) {
+ /* If writemask is disabled, the HiZ memory will not be changed,
+ * so we can keep its content for later. */
+ if (dsa->dsa.depth.writemask) {
+ r300->hiz_in_use = FALSE;
+ }
+ return;
+ }
+ DBG(r300, DBG_HYPERZ, "r300: Z-func: %i\n", dsa->dsa.depth.func);
+
+ /* Set the HiZ function if needed. */
+ if (r300->hiz_func == HIZ_FUNC_NONE) {
+ r300->hiz_func = r300_get_hiz_func(r300);
+ }
+
+ /* Setup the HiZ bits. */
+ z->zb_bw_cntl |= R300_HIZ_ENABLE |
+ (r300->hiz_func == HIZ_FUNC_MIN ? R300_HIZ_MIN : R300_HIZ_MAX);
+
+ z->sc_hyperz |= R300_SC_HYPERZ_ENABLE |
+ r300_get_sc_hz_max(r300);
+
+ if (r300->screen->caps.is_r500) {
+ z->zb_bw_cntl |= R500_HIZ_EQUAL_REJECT_ENABLE;
+ }
+ }
+}
+
/*****************************************************************************/
/* The ZTOP state */
/*****************************************************************************/
} else {
ztop_state->z_buffer_top = R300_ZTOP_ENABLE;
}
-
if (ztop_state->z_buffer_top != old_ztop)
- r300->ztop_state.dirty = TRUE;
+ r300_mark_atom_dirty(r300, &r300->ztop_state);
}
void r300_update_hyperz_state(struct r300_context* r300)
{
r300_update_ztop(r300);
+
+ if (r300->hyperz_state.dirty) {
+ r300_update_hyperz(r300);
+ }
}
projects / mesa.git / blobdiff