#include "r300_context.h"
#include "r300_reg.h"
#include "r300_fs.h"
-#include "r300_winsys.h"
#include "util/u_format.h"
#include "util/u_mm.h"
/* The HyperZ setup */
/*****************************************************************************/
-static bool r300_get_sc_hz_max(struct r300_context *r300)
+static enum r300_hiz_func r300_get_hiz_func(struct r300_context *r300)
{
- struct r300_dsa_state *dsa_state = r300->dsa_state.state;
- int func = dsa_state->z_stencil_control & R300_ZS_MASK;
- int ret = R300_SC_HYPERZ_MIN;
+ 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;
- if (func >= R300_ZS_GEQUAL && func <= R300_ZS_ALWAYS)
- ret = R300_SC_HYPERZ_MAX;
- return ret;
+ return func >= PIPE_FUNC_GREATER ? R300_SC_HYPERZ_MAX : R300_SC_HYPERZ_MIN;
}
-static bool r300_zfunc_same_direction(int func1, int func2)
+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 ((func1 == R300_ZS_LESS || func1 == R300_ZS_LEQUAL) &&
- (func2 == R300_ZS_EQUAL || func2 == R300_ZS_GEQUAL ||
- func2 == R300_ZS_GREATER))
- return FALSE;
+ if (r300->hiz_func == HIZ_FUNC_MAX &&
+ (func == PIPE_FUNC_GEQUAL || func == PIPE_FUNC_GREATER))
+ return FALSE;
/* func1 is greater/greaterthan */
- if ((func1 == R300_ZS_GEQUAL || func1 == R300_ZS_GREATER) &&
- (func2 == R300_ZS_LESS || func2 == R300_ZS_LEQUAL))
- return FALSE;
+ if (r300->hiz_func == HIZ_FUNC_MIN &&
+ (func == PIPE_FUNC_LESS || func == PIPE_FUNC_LEQUAL))
+ return FALSE;
return TRUE;
}
-static int r300_get_hiz_min(struct r300_context *r300)
-{
- struct r300_dsa_state *dsa_state = r300->dsa_state.state;
- int func = dsa_state->z_stencil_control & R300_ZS_MASK;
- int ret = R300_HIZ_MIN;
-
- if (func == R300_ZS_LESS || func == R300_ZS_LEQUAL)
- ret = R300_HIZ_MAX;
- return ret;
-}
-
static boolean r300_dsa_stencil_op_not_keep(struct pipe_stencil_state *s)
{
- if (s->enabled && (s->fail_op != PIPE_STENCIL_OP_KEEP ||
- s->zfail_op != PIPE_STENCIL_OP_KEEP))
- return TRUE;
- return FALSE;
+ return s->enabled && (s->fail_op != PIPE_STENCIL_OP_KEEP ||
+ s->zfail_op != PIPE_STENCIL_OP_KEEP);
}
-static boolean r300_can_hiz(struct r300_context *r300)
+static boolean r300_hiz_allowed(struct r300_context *r300)
{
- struct r300_dsa_state *dsa_state = r300->dsa_state.state;
- struct pipe_depth_stencil_alpha_state *dsa = &dsa_state->dsa;
- struct r300_screen* r300screen = r300->screen;
- struct r300_hyperz_state *z = r300->hyperz_state.state;
+ struct r300_dsa_state *dsa = r300->dsa_state.state;
+ struct r300_screen *r300screen = r300->screen;
- /* shader writes depth - no HiZ */
- if (r300_fragment_shader_writes_depth(r300_fs(r300))) /* (5) */
+ 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->stencil[0]) ||
- r300_dsa_stencil_op_not_keep(&dsa->stencil[1]))
+ 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->depth.enabled) {
+ if (dsa->dsa.depth.enabled) {
/* if depth func is EQUAL pre-r500 */
- if (dsa->depth.func == PIPE_FUNC_EQUAL && !r300screen->caps.is_r500)
+ if (dsa->dsa.depth.func == PIPE_FUNC_EQUAL && !r300screen->caps.is_r500)
return FALSE;
+
/* if depth func is NOTEQUAL */
- if (dsa->depth.func == PIPE_FUNC_NOTEQUAL)
+ if (dsa->dsa.depth.func == PIPE_FUNC_NOTEQUAL)
return FALSE;
}
- /* depth comparison function - if just cleared save and return okay */
- if (z->current_func == -1) {
- int func = dsa_state->z_stencil_control & R300_ZS_MASK;
- if (func != 0 && func != 7)
- z->current_func = dsa_state->z_stencil_control & R300_ZS_MASK;
- } else {
- /* simple don't change */
- if (!r300_zfunc_same_direction(z->current_func,
- (dsa_state->z_stencil_control & R300_ZS_MASK))) {
- DBG(r300, DBG_HYPERZ,
- "z func changed direction - disabling hyper-z %d -> %d\n",
- z->current_func, dsa_state->z_stencil_control);
- return FALSE;
- }
- }
return TRUE;
}
(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;
return;
}
- if (!zstex)
+ if (!zstex || !r300->hyperz_enabled)
return;
- if (!r300->rws->get_value(r300->rws, R300_CAN_HYPERZ))
- 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;
+ }
- /* Zbuffer compression. */
- if (r300->zmask_in_use && !r300->hyperz_locked) {
+ /* 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_FORCE_COMPRESSED_STENCIL_VALUE_ENABLE |*/
R300_RD_COMP_ENABLE;
+ return;
+ }
- if (!r300->zmask_decompress) {
- z->zb_bw_cntl |= R300_WR_COMP_ENABLE;
- }
+ /* 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;
}
- if (zstex->tex.zcomp8x8[fb->zsbuf->u.tex.level]) {
- z->gb_z_peq_config |= R300_GB_Z_PEQ_CONFIG_Z_PEQ_SIZE_8_8;
+ /* 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;
}
- /* XXX Use can_hiz to disable hyperz for good, instead of turning it off/on. */
- if (r300->hiz_in_use && !r300->hyperz_locked && r300_can_hiz(r300)) {
+ /* 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_get_hiz_min(r300);
+ (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_FP_EXP_BITS_3 |
- R500_HIZ_EQUAL_REJECT_ENABLE;
+ z->zb_bw_cntl |= R500_HIZ_EQUAL_REJECT_ENABLE;
}
}
-
- /* R500-specific features and optimizations. */
- if (r300->screen->caps.is_r500) {
- z->zb_bw_cntl |= R500_PEQ_PACKING_ENABLE |
- R500_COVERED_PTR_MASKING_ENABLE;
- }
}
/*****************************************************************************/
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