Mesa (master): r300g: rewrite occlusion queries
Marek Olšák
mareko at kemper.freedesktop.org
Mon Jun 14 10:47:41 UTC 2010
Module: Mesa
Branch: master
Commit: cf3778bae03460325960d2aec0cd4cdf325299eb
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=cf3778bae03460325960d2aec0cd4cdf325299eb
Author: Marek Olšák <maraeo at gmail.com>
Date: Mon Jun 14 05:18:47 2010 +0200
r300g: rewrite occlusion queries
The previous implementation had issues with queries spanning over several
command streams as well as using a very large number of queries.
This fixes flickering in Enemy Territory: Quake Wars. The driver now renders
everything correctly in this game and the graphics is awesome.
---
src/gallium/drivers/r300/r300_blit.c | 130 ++++++++++++++----------
src/gallium/drivers/r300/r300_context.c | 8 +--
src/gallium/drivers/r300/r300_context.h | 29 ++++--
src/gallium/drivers/r300/r300_defines.h | 6 -
src/gallium/drivers/r300/r300_emit.c | 41 +++++---
src/gallium/drivers/r300/r300_query.c | 109 +++++++++------------
src/gallium/drivers/r300/r300_screen_buffer.c | 4 -
7 files changed, 168 insertions(+), 159 deletions(-)
diff --git a/src/gallium/drivers/r300/r300_blit.c b/src/gallium/drivers/r300/r300_blit.c
index 3bb1cae..2a47701 100644
--- a/src/gallium/drivers/r300/r300_blit.c
+++ b/src/gallium/drivers/r300/r300_blit.c
@@ -25,8 +25,23 @@
#include "util/u_format.h"
-static void r300_blitter_save_states(struct r300_context* r300)
+enum r300_blitter_op
{
+ R300_CLEAR,
+ R300_CLEAR_SURFACE,
+ R300_COPY
+};
+
+static void r300_blitter_begin(struct r300_context* r300, enum r300_blitter_op op)
+{
+ if (r300->query_current) {
+ r300->blitter_saved_query = r300->query_current;
+ r300_stop_query(r300);
+ }
+
+ /* Yeah we have to save all those states to ensure the blitter operation
+ * is really transparent. The states will be restored by the blitter once
+ * copying is done. */
util_blitter_save_blend(r300->blitter, r300->blend_state.state);
util_blitter_save_depth_stencil_alpha(r300->blitter, r300->dsa_state.state);
util_blitter_save_stencil_ref(r300->blitter, &(r300->stencil_ref));
@@ -38,6 +53,30 @@ static void r300_blitter_save_states(struct r300_context* r300)
util_blitter_save_vertex_elements(r300->blitter, r300->velems);
util_blitter_save_vertex_buffers(r300->blitter, r300->vertex_buffer_count,
r300->vertex_buffer);
+
+ if (op & (R300_CLEAR_SURFACE | R300_COPY))
+ util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
+
+ if (op & R300_COPY) {
+ struct r300_textures_state* state =
+ (struct r300_textures_state*)r300->textures_state.state;
+
+ util_blitter_save_fragment_sampler_states(
+ r300->blitter, state->sampler_state_count,
+ (void**)state->sampler_states);
+
+ util_blitter_save_fragment_sampler_views(
+ r300->blitter, state->sampler_view_count,
+ (struct pipe_sampler_view**)state->sampler_views);
+ }
+}
+
+static void r300_blitter_end(struct r300_context *r300)
+{
+ if (r300->blitter_saved_query) {
+ r300_resume_query(r300, r300->blitter_saved_query);
+ r300->blitter_saved_query = NULL;
+ }
}
/* Clear currently bound buffers. */
@@ -73,13 +112,45 @@ static void r300_clear(struct pipe_context* pipe,
struct pipe_framebuffer_state* fb =
(struct pipe_framebuffer_state*)r300->fb_state.state;
- r300_blitter_save_states(r300);
-
+ r300_blitter_begin(r300, R300_CLEAR);
util_blitter_clear(r300->blitter,
fb->width,
fb->height,
fb->nr_cbufs,
buffers, rgba, depth, stencil);
+ r300_blitter_end(r300);
+}
+
+/* Clear a region of a color surface to a constant value. */
+static void r300_clear_render_target(struct pipe_context *pipe,
+ struct pipe_surface *dst,
+ const float *rgba,
+ unsigned dstx, unsigned dsty,
+ unsigned width, unsigned height)
+{
+ struct r300_context *r300 = r300_context(pipe);
+
+ r300_blitter_begin(r300, R300_CLEAR_SURFACE);
+ util_blitter_clear_render_target(r300->blitter, dst, rgba,
+ dstx, dsty, width, height);
+ r300_blitter_end(r300);
+}
+
+/* Clear a region of a depth stencil surface. */
+static void r300_clear_depth_stencil(struct pipe_context *pipe,
+ struct pipe_surface *dst,
+ unsigned clear_flags,
+ double depth,
+ unsigned stencil,
+ unsigned dstx, unsigned dsty,
+ unsigned width, unsigned height)
+{
+ struct r300_context *r300 = r300_context(pipe);
+
+ r300_blitter_begin(r300, R300_CLEAR_SURFACE);
+ util_blitter_clear_depth_stencil(r300->blitter, dst, clear_flags, depth, stencil,
+ dstx, dsty, width, height);
+ r300_blitter_end(r300);
}
/* Copy a block of pixels from one surface to another using HW. */
@@ -93,27 +164,12 @@ static void r300_hw_copy_region(struct pipe_context* pipe,
unsigned width, unsigned height)
{
struct r300_context* r300 = r300_context(pipe);
- struct r300_textures_state* state =
- (struct r300_textures_state*)r300->textures_state.state;
-
- /* Yeah we have to save all those states to ensure this blitter operation
- * is really transparent. The states will be restored by the blitter once
- * copying is done. */
- r300_blitter_save_states(r300);
- util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
-
- util_blitter_save_fragment_sampler_states(
- r300->blitter, state->sampler_state_count,
- (void**)state->sampler_states);
- util_blitter_save_fragment_sampler_views(
- r300->blitter, state->sampler_view_count,
- (struct pipe_sampler_view**)state->sampler_views);
-
- /* Do a copy */
+ r300_blitter_begin(r300, R300_COPY);
util_blitter_copy_region(r300->blitter, dst, subdst, dstx, dsty, dstz,
src, subsrc, srcx, srcy, srcz, width, height,
TRUE);
+ r300_blitter_end(r300);
}
/* Copy a block of pixels from one surface to another. */
@@ -187,40 +243,6 @@ static void r300_resource_copy_region(struct pipe_context *pipe,
}
}
-/* Clear a region of a color surface to a constant value. */
-static void r300_clear_render_target(struct pipe_context *pipe,
- struct pipe_surface *dst,
- const float *rgba,
- unsigned dstx, unsigned dsty,
- unsigned width, unsigned height)
-{
- struct r300_context *r300 = r300_context(pipe);
-
- r300_blitter_save_states(r300);
- util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
-
- util_blitter_clear_render_target(r300->blitter, dst, rgba,
- dstx, dsty, width, height);
-}
-
-/* Clear a region of a depth stencil surface. */
-static void r300_clear_depth_stencil(struct pipe_context *pipe,
- struct pipe_surface *dst,
- unsigned clear_flags,
- double depth,
- unsigned stencil,
- unsigned dstx, unsigned dsty,
- unsigned width, unsigned height)
-{
- struct r300_context *r300 = r300_context(pipe);
-
- r300_blitter_save_states(r300);
- util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state);
-
- util_blitter_clear_depth_stencil(r300->blitter, dst, clear_flags, depth, stencil,
- dstx, dsty, width, height);
-}
-
void r300_init_blit_functions(struct r300_context *r300)
{
r300->context.clear = r300_clear;
diff --git a/src/gallium/drivers/r300/r300_context.c b/src/gallium/drivers/r300/r300_context.c
index 57cf68f..1139426 100644
--- a/src/gallium/drivers/r300/r300_context.c
+++ b/src/gallium/drivers/r300/r300_context.c
@@ -39,7 +39,7 @@
static void r300_destroy_context(struct pipe_context* context)
{
struct r300_context* r300 = r300_context(context);
- struct r300_query* query, * temp;
+ struct r300_query *query, *temp;
struct r300_atom *atom;
util_blitter_destroy(r300->blitter);
@@ -55,9 +55,6 @@ static void r300_destroy_context(struct pipe_context* context)
}
}
- /* Free the OQ BO. */
- context->screen->resource_destroy(context->screen, r300->oqbo);
-
/* If there are any queries pending or not destroyed, remove them now. */
foreach_s(query, temp, &r300->query_list) {
remove_from_list(query);
@@ -221,9 +218,6 @@ struct pipe_context* r300_create_context(struct pipe_screen* screen,
r300_setup_atoms(r300);
- /* Open up the OQ BO. */
- r300->oqbo = pipe_buffer_create(screen,
- R300_BIND_OQBO, 4096);
make_empty_list(&r300->query_list);
r300_init_blit_functions(r300);
diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index 4869083..90de53e 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -241,14 +241,23 @@ struct r300_constant_buffer {
struct r300_query {
/* The kind of query. Currently only OQ is supported. */
unsigned type;
- /* The current count of this query. Required to be at least 32 bits. */
- unsigned int count;
- /* The offset of this query into the query buffer, in bytes. */
- unsigned offset;
+ /* The number of pipes where query results are stored. */
+ unsigned num_pipes;
+ /* How many results have been written, in dwords. It's incremented
+ * after end_query and flush. */
+ unsigned num_results;
/* if we've flushed the query */
boolean flushed;
/* if begin has been emitted */
boolean begin_emitted;
+
+ /* The buffer where query results are stored. */
+ struct r300_winsys_buffer *buffer;
+ /* The size of the buffer. */
+ unsigned buffer_size;
+ /* The domain of the buffer. */
+ enum r300_buffer_domain domain;
+
/* Linked list members. */
struct r300_query* prev;
struct r300_query* next;
@@ -388,10 +397,11 @@ struct r300_context {
/* Offset into the VBO. */
size_t vbo_offset;
- /* Occlusion query buffer. */
- struct pipe_resource* oqbo;
- /* Query list. */
+ /* The currently active query. */
struct r300_query *query_current;
+ /* The saved query for blitter operations. */
+ struct r300_query *blitter_saved_query;
+ /* Query list. */
struct r300_query query_list;
/* Various CSO state objects. */
@@ -522,6 +532,11 @@ void r300_init_render_functions(struct r300_context *r300);
void r300_init_state_functions(struct r300_context* r300);
void r300_init_resource_functions(struct r300_context* r300);
+/* r300_query.c */
+void r300_resume_query(struct r300_context *r300,
+ struct r300_query *query);
+void r300_stop_query(struct r300_context *r300);
+
/* r300_render_translate.c */
void r300_begin_vertex_translate(struct r300_context *r300);
void r300_end_vertex_translate(struct r300_context *r300);
diff --git a/src/gallium/drivers/r300/r300_defines.h b/src/gallium/drivers/r300/r300_defines.h
index 565a2f3..d510d80 100644
--- a/src/gallium/drivers/r300/r300_defines.h
+++ b/src/gallium/drivers/r300/r300_defines.h
@@ -32,12 +32,6 @@
#define R300_INVALID_FORMAT 0xffff
-/* XXX: this is just a bandaid on larger problems in
- * r300_screen_buffer.h which doesn't seem to be fully ported to
- * gallium-resources.
- */
-#define R300_BIND_OQBO (1<<21)
-
/* Tiling flags. */
enum r300_buffer_tiling {
R300_BUFFER_LINEAR = 0,
diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index 96caf46..46b958b 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -353,13 +353,14 @@ void r300_emit_query_start(struct r300_context *r300, unsigned size, void*state)
OUT_CS_REG(R300_ZB_ZPASS_DATA, 0);
END_CS;
query->begin_emitted = TRUE;
+ query->flushed = FALSE;
}
-
static void r300_emit_query_end_frag_pipes(struct r300_context *r300,
struct r300_query *query)
{
struct r300_capabilities* caps = &r300->screen->caps;
+ struct r300_winsys_buffer *buf = r300->query_current->buffer;
CS_LOCALS(r300);
assert(caps->num_frag_pipes);
@@ -378,28 +379,28 @@ static void r300_emit_query_end_frag_pipes(struct r300_context *r300,
/* pipe 3 only */
OUT_CS_REG(R300_SU_REG_DEST, 1 << 3);
OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
- OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 3),
- 0, r300_buffer(r300->oqbo)->domain, 0);
+ OUT_CS_RELOC(buf, (query->num_results + 3) * 4,
+ 0, query->domain, 0);
case 3:
/* pipe 2 only */
OUT_CS_REG(R300_SU_REG_DEST, 1 << 2);
OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
- OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 2),
- 0, r300_buffer(r300->oqbo)->domain, 0);
+ OUT_CS_RELOC(buf, (query->num_results + 2) * 4,
+ 0, query->domain, 0);
case 2:
/* pipe 1 only */
/* As mentioned above, accomodate RV380 and older. */
OUT_CS_REG(R300_SU_REG_DEST,
1 << (caps->high_second_pipe ? 3 : 1));
OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
- OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 1),
- 0, r300_buffer(r300->oqbo)->domain, 0);
+ OUT_CS_RELOC(buf, (query->num_results + 1) * 4,
+ 0, query->domain, 0);
case 1:
/* pipe 0 only */
OUT_CS_REG(R300_SU_REG_DEST, 1 << 0);
OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
- OUT_CS_BUF_RELOC(r300->oqbo, query->offset + (sizeof(uint32_t) * 0),
- 0, r300_buffer(r300->oqbo)->domain, 0);
+ OUT_CS_RELOC(buf, (query->num_results + 0) * 4,
+ 0, query->domain, 0);
break;
default:
fprintf(stderr, "r300: Implementation error: Chipset reports %d"
@@ -415,12 +416,13 @@ static void r300_emit_query_end_frag_pipes(struct r300_context *r300,
static void rv530_emit_query_end_single_z(struct r300_context *r300,
struct r300_query *query)
{
+ struct r300_winsys_buffer *buf = r300->query_current->buffer;
CS_LOCALS(r300);
BEGIN_CS(8);
OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
- OUT_CS_BUF_RELOC(r300->oqbo, query->offset, 0, r300_buffer(r300->oqbo)->domain, 0);
+ OUT_CS_RELOC(buf, query->num_results * 4, 0, query->domain, 0);
OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
END_CS;
}
@@ -428,15 +430,16 @@ static void rv530_emit_query_end_single_z(struct r300_context *r300,
static void rv530_emit_query_end_double_z(struct r300_context *r300,
struct r300_query *query)
{
+ struct r300_winsys_buffer *buf = r300->query_current->buffer;
CS_LOCALS(r300);
BEGIN_CS(14);
OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_0);
OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
- OUT_CS_BUF_RELOC(r300->oqbo, query->offset, 0, r300_buffer(r300->oqbo)->domain, 0);
+ OUT_CS_RELOC(buf, (query->num_results + 0) * 4, 0, query->domain, 0);
OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_1);
OUT_CS_REG_SEQ(R300_ZB_ZPASS_ADDR, 1);
- OUT_CS_BUF_RELOC(r300->oqbo, query->offset + sizeof(uint32_t), 0, r300_buffer(r300->oqbo)->domain, 0);
+ OUT_CS_RELOC(buf, (query->num_results + 1) * 4, 0, query->domain, 0);
OUT_CS_REG(RV530_FG_ZBREG_DEST, RV530_FG_ZBREG_DEST_PIPE_SELECT_ALL);
END_CS;
}
@@ -461,6 +464,13 @@ void r300_emit_query_end(struct r300_context* r300)
r300_emit_query_end_frag_pipes(r300, query);
query->begin_emitted = FALSE;
+ query->num_results += query->num_pipes;
+
+ /* XXX grab all the results and reset the counter. */
+ if (query->num_results >= query->buffer_size / 4 - 4) {
+ query->num_results = (query->buffer_size / 4) / 2;
+ fprintf(stderr, "r300: Rewinding OQBO...\n");
+ }
}
void r300_emit_rs_state(struct r300_context* r300, unsigned size, void* state)
@@ -895,10 +905,9 @@ validate:
}
}
/* ...occlusion query buffer... */
- if (r300->query_start.dirty ||
- (r300->query_current && r300->query_current->begin_emitted)) {
- if (!r300_add_buffer(r300->rws, r300->oqbo,
- 0, r300_buffer(r300->oqbo)->domain)) {
+ if (r300->query_current) {
+ if (!r300->rws->add_buffer(r300->rws, r300->query_current->buffer,
+ 0, r300->query_current->domain)) {
r300->context.flush(&r300->context, 0, NULL);
goto validate;
}
diff --git a/src/gallium/drivers/r300/r300_query.c b/src/gallium/drivers/r300/r300_query.c
index 7c08806..42cb6ad 100644
--- a/src/gallium/drivers/r300/r300_query.c
+++ b/src/gallium/drivers/r300/r300_query.c
@@ -26,6 +26,7 @@
#include "r300_context.h"
#include "r300_screen.h"
#include "r300_emit.h"
+#include "r300_winsys.h"
#include <stdio.h>
@@ -34,30 +35,27 @@ static struct pipe_query *r300_create_query(struct pipe_context *pipe,
{
struct r300_context *r300 = r300_context(pipe);
struct r300_screen *r300screen = r300->screen;
- unsigned query_size;
- struct r300_query *q, *qptr;
+ struct r300_query *q;
+
+ assert(query_type == PIPE_QUERY_OCCLUSION_COUNTER);
q = CALLOC_STRUCT(r300_query);
+ if (!q)
+ return NULL;
q->type = query_type;
- assert(q->type == PIPE_QUERY_OCCLUSION_COUNTER);
+ q->domain = R300_DOMAIN_GTT;
+ q->buffer_size = 4096;
if (r300screen->caps.family == CHIP_FAMILY_RV530)
- query_size = r300screen->caps.num_z_pipes * sizeof(uint32_t);
+ q->num_pipes = r300screen->caps.num_z_pipes;
else
- query_size = r300screen->caps.num_frag_pipes * sizeof(uint32_t);
+ q->num_pipes = r300screen->caps.num_frag_pipes;
- if (!is_empty_list(&r300->query_list)) {
- qptr = last_elem(&r300->query_list);
- q->offset = qptr->offset + query_size;
- }
insert_at_tail(&r300->query_list, q);
- /* XXX */
- if (q->offset >= 4096) {
- q->offset = 0;
- fprintf(stderr, "r300: Rewinding OQBO...\n");
- }
+ /* Open up the occlusion query buffer. */
+ q->buffer = r300->rws->buffer_create(r300->rws, 4096, 0, q->domain, q->buffer_size);
return (struct pipe_query*)q;
}
@@ -65,18 +63,26 @@ static struct pipe_query *r300_create_query(struct pipe_context *pipe,
static void r300_destroy_query(struct pipe_context* pipe,
struct pipe_query* query)
{
- struct r300_query* q = (struct r300_query*)query;
+ struct r300_context *r300 = r300_context(pipe);
+ struct r300_query* q = r300_query(query);
+ r300->rws->buffer_reference(r300->rws, &q->buffer, NULL);
remove_from_list(q);
FREE(query);
}
+void r300_resume_query(struct r300_context *r300,
+ struct r300_query *query)
+{
+ r300->query_current = query;
+ r300->query_start.dirty = TRUE;
+}
+
static void r300_begin_query(struct pipe_context* pipe,
struct pipe_query* query)
{
- uint32_t value = ~0U;
struct r300_context* r300 = r300_context(pipe);
- struct r300_query* q = (struct r300_query*)query;
+ struct r300_query* q = r300_query(query);
if (r300->query_current != NULL) {
fprintf(stderr, "r300: begin_query: "
@@ -85,30 +91,29 @@ static void r300_begin_query(struct pipe_context* pipe,
return;
}
- pipe_buffer_write(pipe,
- r300->oqbo,
- q->offset,
- sizeof value,
- &value);
+ q->num_results = 0;
+ r300_resume_query(r300, q);
+}
- q->flushed = FALSE;
- r300->query_current = q;
- r300->query_start.dirty = TRUE;
+void r300_stop_query(struct r300_context *r300)
+{
+ r300_emit_query_end(r300);
+ r300->query_current = NULL;
}
static void r300_end_query(struct pipe_context* pipe,
struct pipe_query* query)
{
struct r300_context* r300 = r300_context(pipe);
+ struct r300_query *q = r300_query(query);
- if ((struct r300_query*)query != r300->query_current) {
+ if (q != r300->query_current) {
fprintf(stderr, "r300: end_query: Got invalid query.\n");
assert(0);
return;
}
- r300_emit_query_end(r300);
- r300->query_current = NULL;
+ r300_stop_query(r300);
}
static boolean r300_get_query_result(struct pipe_context* pipe,
@@ -117,54 +122,28 @@ static boolean r300_get_query_result(struct pipe_context* pipe,
void* vresult)
{
struct r300_context* r300 = r300_context(pipe);
- struct r300_screen* r300screen = r300->screen;
- struct r300_query *q = (struct r300_query*)query;
- struct pipe_transfer *transfer;
- unsigned flags = PIPE_TRANSFER_READ;
- uint32_t* map;
- uint32_t temp = 0;
- unsigned i, num_results;
+ struct r300_query *q = r300_query(query);
+ unsigned flags, i;
+ uint32_t temp, *map;
uint64_t *result = (uint64_t*)vresult;
- if (q->flushed == FALSE)
+ if (!q->flushed)
pipe->flush(pipe, 0, NULL);
- if (!wait) {
- flags |= PIPE_TRANSFER_DONTBLOCK;
- }
- map = pipe_buffer_map(pipe, r300->oqbo, flags, &transfer);
+ flags = PIPE_TRANSFER_READ | (!wait ? PIPE_TRANSFER_DONTBLOCK : 0);
+
+ map = r300->rws->buffer_map(r300->rws, q->buffer, flags);
if (!map)
return FALSE;
- map += q->offset / 4;
- if (r300screen->caps.family == CHIP_FAMILY_RV530)
- num_results = r300screen->caps.num_z_pipes;
- else
- num_results = r300screen->caps.num_frag_pipes;
-
- for (i = 0; i < num_results; i++) {
- if (*map == ~0U) {
- /* Looks like our results aren't ready yet. */
- if (wait) {
- fprintf(stderr, "r300: Despite waiting, OQ results haven't "
- "come in yet. This is a driver bug.\n"
- "r300: Returning bogus results to avoid "
- "a possible infinite loop...\n");
- temp = 987654321;
- } else {
- temp = ~0U;
- }
- break;
- }
+ /* Sum up the results. */
+ temp = 0;
+ for (i = 0; i < q->num_results; i++) {
temp += *map;
map++;
}
- pipe_buffer_unmap(pipe, r300->oqbo, transfer);
- if (temp == ~0U) {
- /* Our results haven't been written yet... */
- return FALSE;
- }
+ r300->rws->buffer_unmap(r300->rws, q->buffer);
*result = temp;
return TRUE;
diff --git a/src/gallium/drivers/r300/r300_screen_buffer.c b/src/gallium/drivers/r300/r300_screen_buffer.c
index fe53f30..7959e6a 100644
--- a/src/gallium/drivers/r300/r300_screen_buffer.c
+++ b/src/gallium/drivers/r300/r300_screen_buffer.c
@@ -264,10 +264,6 @@ struct pipe_resource *r300_buffer_create(struct pipe_screen *screen,
rbuf->b.vtbl = &r300_buffer_vtbl;
pipe_reference_init(&rbuf->b.b.reference, 1);
rbuf->b.b.screen = screen;
-
- if (rbuf->b.b.bind & R300_BIND_OQBO)
- alignment = 4096;
-
rbuf->domain = R300_DOMAIN_GTT;
rbuf->buf = r300screen->rws->buffer_create(r300screen->rws,
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