[Mesa-dev] [PATCH 3/6] r600g: rework state emission of constant buffers
Marek Olšák
maraeo at gmail.com
Mon Apr 2 08:10:55 PDT 2012
Framerate in ipers:
before: 43.6 FPS
after: 46.6 FPS
---
src/gallium/drivers/r600/evergreen_hw_context.c | 16 ----
src/gallium/drivers/r600/evergreen_state.c | 71 +++++++++++++++++
src/gallium/drivers/r600/r600_hw_context.c | 13 +--
src/gallium/drivers/r600/r600_pipe.h | 24 +++++--
src/gallium/drivers/r600/r600_state.c | 64 ++++++++++++++++
src/gallium/drivers/r600/r600_state_common.c | 93 +++++++---------------
6 files changed, 188 insertions(+), 93 deletions(-)
diff --git a/src/gallium/drivers/r600/evergreen_hw_context.c b/src/gallium/drivers/r600/evergreen_hw_context.c
index 010b5f3..2ab29c9 100644
--- a/src/gallium/drivers/r600/evergreen_hw_context.c
+++ b/src/gallium/drivers/r600/evergreen_hw_context.c
@@ -63,10 +63,6 @@ static const struct r600_reg evergreen_context_reg_list[] = {
{GROUP_FORCE_NEW_BLOCK, 0, 0},
{R_028058_DB_DEPTH_SIZE, 0, 0},
{R_02805C_DB_DEPTH_SLICE, 0, 0},
- {R_028140_ALU_CONST_BUFFER_SIZE_PS_0, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028144_ALU_CONST_BUFFER_SIZE_PS_1, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028180_ALU_CONST_BUFFER_SIZE_VS_0, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028184_ALU_CONST_BUFFER_SIZE_VS_1, REG_FLAG_DIRTY_ALWAYS, 0},
{R_028204_PA_SC_WINDOW_SCISSOR_TL, 0, 0},
{R_028208_PA_SC_WINDOW_SCISSOR_BR, 0, 0},
{R_028234_PA_SU_HARDWARE_SCREEN_OFFSET, 0, 0},
@@ -193,10 +189,6 @@ static const struct r600_reg evergreen_context_reg_list[] = {
{R_028860_SQ_PGM_RESOURCES_VS, 0, 0},
{R_0288A4_SQ_PGM_START_FS, REG_FLAG_NEED_BO, 0},
{R_0288EC_SQ_LDS_ALLOC_PS, 0, 0},
- {R_028940_ALU_CONST_CACHE_PS_0, REG_FLAG_NEED_BO, 0},
- {R_028944_ALU_CONST_CACHE_PS_1, REG_FLAG_NEED_BO, 0},
- {R_028980_ALU_CONST_CACHE_VS_0, REG_FLAG_NEED_BO, 0},
- {R_028984_ALU_CONST_CACHE_VS_1, REG_FLAG_NEED_BO, 0},
{R_028A00_PA_SU_POINT_SIZE, 0, 0},
{R_028A04_PA_SU_POINT_MINMAX, 0, 0},
{R_028A08_PA_SU_LINE_CNTL, 0, 0},
@@ -331,10 +323,6 @@ static const struct r600_reg cayman_context_reg_list[] = {
{GROUP_FORCE_NEW_BLOCK, 0, 0},
{R_028058_DB_DEPTH_SIZE, 0, 0},
{R_02805C_DB_DEPTH_SLICE, 0, 0},
- {R_028140_ALU_CONST_BUFFER_SIZE_PS_0, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028144_ALU_CONST_BUFFER_SIZE_PS_1, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028180_ALU_CONST_BUFFER_SIZE_VS_0, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028184_ALU_CONST_BUFFER_SIZE_VS_1, REG_FLAG_DIRTY_ALWAYS, 0},
{R_028204_PA_SC_WINDOW_SCISSOR_TL, 0, 0},
{R_028208_PA_SC_WINDOW_SCISSOR_BR, 0, 0},
{R_028234_PA_SU_HARDWARE_SCREEN_OFFSET, 0, 0},
@@ -468,10 +456,6 @@ static const struct r600_reg cayman_context_reg_list[] = {
{R_028920_SQ_GS_VERT_ITEMSIZE_1, 0, 0},
{R_028924_SQ_GS_VERT_ITEMSIZE_2, 0, 0},
{R_028928_SQ_GS_VERT_ITEMSIZE_3, 0, 0},
- {R_028940_ALU_CONST_CACHE_PS_0, REG_FLAG_NEED_BO, 0},
- {R_028944_ALU_CONST_CACHE_PS_1, REG_FLAG_NEED_BO, 0},
- {R_028980_ALU_CONST_CACHE_VS_0, REG_FLAG_NEED_BO, 0},
- {R_028984_ALU_CONST_CACHE_VS_1, REG_FLAG_NEED_BO, 0},
{R_028A00_PA_SU_POINT_SIZE, 0, 0},
{R_028A04_PA_SU_POINT_MINMAX, 0, 0},
{R_028A08_PA_SU_LINE_CNTL, 0, 0},
diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index 00d2d0d..e97f8e3 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -1763,11 +1763,82 @@ static void evergreen_emit_vertex_buffers(struct r600_context *rctx, struct r600
}
}
+static void evergreen_emit_constant_buffer(struct r600_context *rctx,
+ struct r600_constbuf_state *state,
+ unsigned buffer_id_base,
+ unsigned reg_alu_constbuf_size,
+ unsigned reg_alu_const_cache)
+{
+ struct radeon_winsys_cs *cs = rctx->cs;
+ uint32_t dirty_mask = state->dirty_mask;
+
+ while (dirty_mask) {
+ struct r600_constant_buffer *cb;
+ struct r600_resource *rbuffer;
+ uint64_t va;
+ unsigned buffer_index = ffs(dirty_mask) - 1;
+
+ cb = &state->cb[buffer_index];
+ rbuffer = (struct r600_resource*)cb->buffer;
+ assert(rbuffer);
+
+ va = r600_resource_va(&rctx->screen->screen, &rbuffer->b.b.b);
+ va += cb->buffer_offset;
+
+ r600_write_context_reg(cs, reg_alu_constbuf_size + buffer_index * 4,
+ ALIGN_DIVUP(cb->buffer_size >> 4, 16));
+ r600_write_context_reg(cs, reg_alu_const_cache + buffer_index * 4, va >> 8);
+
+ r600_write_value(cs, PKT3(PKT3_NOP, 0, 0));
+ r600_write_value(cs, r600_context_bo_reloc(rctx, rbuffer, RADEON_USAGE_READ));
+
+ r600_write_value(cs, PKT3(PKT3_SET_RESOURCE, 8, 0));
+ r600_write_value(cs, (buffer_id_base + buffer_index) * 8);
+ r600_write_value(cs, va); /* RESOURCEi_WORD0 */
+ r600_write_value(cs, rbuffer->buf->size - cb->buffer_offset - 1); /* RESOURCEi_WORD1 */
+ r600_write_value(cs, /* RESOURCEi_WORD2 */
+ S_030008_ENDIAN_SWAP(r600_endian_swap(32)) |
+ S_030008_STRIDE(16) |
+ S_030008_BASE_ADDRESS_HI(va >> 32UL));
+ r600_write_value(cs, /* RESOURCEi_WORD3 */
+ S_03000C_DST_SEL_X(V_03000C_SQ_SEL_X) |
+ S_03000C_DST_SEL_Y(V_03000C_SQ_SEL_Y) |
+ S_03000C_DST_SEL_Z(V_03000C_SQ_SEL_Z) |
+ S_03000C_DST_SEL_W(V_03000C_SQ_SEL_W));
+ r600_write_value(cs, 0); /* RESOURCEi_WORD4 */
+ r600_write_value(cs, 0); /* RESOURCEi_WORD5 */
+ r600_write_value(cs, 0); /* RESOURCEi_WORD6 */
+ r600_write_value(cs, 0xc0000000); /* RESOURCEi_WORD7 */
+
+ r600_write_value(cs, PKT3(PKT3_NOP, 0, 0));
+ r600_write_value(cs, r600_context_bo_reloc(rctx, rbuffer, RADEON_USAGE_READ));
+
+ dirty_mask &= ~(1 << buffer_index);
+ }
+ state->dirty_mask = 0;
+}
+
+static void evergreen_emit_vs_constant_buffer(struct r600_context *rctx, struct r600_atom *atom)
+{
+ evergreen_emit_constant_buffer(rctx, &rctx->vs_constbuf_state, 176,
+ R_028180_ALU_CONST_BUFFER_SIZE_VS_0,
+ R_028980_ALU_CONST_CACHE_VS_0);
+}
+
+static void evergreen_emit_ps_constant_buffer(struct r600_context *rctx, struct r600_atom *atom)
+{
+ evergreen_emit_constant_buffer(rctx, &rctx->ps_constbuf_state, 0,
+ R_028140_ALU_CONST_BUFFER_SIZE_PS_0,
+ R_028940_ALU_CONST_CACHE_PS_0);
+}
+
void evergreen_init_state_functions(struct r600_context *rctx)
{
r600_init_atom(&rctx->db_misc_state.atom, evergreen_emit_db_misc_state, 6, 0);
r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
r600_init_atom(&rctx->vertex_buffer_state, evergreen_emit_vertex_buffers, 0, 0);
+ r600_init_atom(&rctx->vs_constbuf_state.atom, evergreen_emit_vs_constant_buffer, 0, 0);
+ r600_init_atom(&rctx->ps_constbuf_state.atom, evergreen_emit_ps_constant_buffer, 0, 0);
rctx->context.create_blend_state = evergreen_create_blend_state;
rctx->context.create_depth_stencil_alpha_state = evergreen_create_dsa_state;
diff --git a/src/gallium/drivers/r600/r600_hw_context.c b/src/gallium/drivers/r600/r600_hw_context.c
index 29e4d23..1717295 100644
--- a/src/gallium/drivers/r600/r600_hw_context.c
+++ b/src/gallium/drivers/r600/r600_hw_context.c
@@ -335,14 +335,6 @@ static const struct r600_reg r600_context_reg_list[] = {
{R_028124_CB_CLEAR_GREEN, 0, 0},
{R_028128_CB_CLEAR_BLUE, 0, 0},
{R_02812C_CB_CLEAR_ALPHA, 0, 0},
- {R_028140_ALU_CONST_BUFFER_SIZE_PS_0, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028144_ALU_CONST_BUFFER_SIZE_PS_1, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028180_ALU_CONST_BUFFER_SIZE_VS_0, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028184_ALU_CONST_BUFFER_SIZE_VS_1, REG_FLAG_DIRTY_ALWAYS, 0},
- {R_028940_ALU_CONST_CACHE_PS_0, REG_FLAG_NEED_BO, 0},
- {R_028944_ALU_CONST_CACHE_PS_1, REG_FLAG_NEED_BO, 0},
- {R_028980_ALU_CONST_CACHE_VS_0, REG_FLAG_NEED_BO, 0},
- {R_028984_ALU_CONST_CACHE_VS_1, REG_FLAG_NEED_BO, 0},
{R_02823C_CB_SHADER_MASK, 0, 0},
{R_028238_CB_TARGET_MASK, 0, 0},
{R_028410_SX_ALPHA_TEST_CONTROL, 0, 0},
@@ -1235,6 +1227,11 @@ void r600_context_flush(struct r600_context *ctx, unsigned flags)
r600_atom_dirty(ctx, &ctx->db_misc_state.atom);
r600_atom_dirty(ctx, &ctx->vertex_buffer_state);
+ ctx->vs_constbuf_state.dirty_mask = ctx->vs_constbuf_state.enabled_mask;
+ ctx->ps_constbuf_state.dirty_mask = ctx->ps_constbuf_state.enabled_mask;
+ r600_constant_buffers_dirty(ctx, &ctx->vs_constbuf_state);
+ r600_constant_buffers_dirty(ctx, &ctx->ps_constbuf_state);
+
if (streamout_suspended) {
ctx->streamout_start = TRUE;
ctx->streamout_append_bitmask = ~0;
diff --git a/src/gallium/drivers/r600/r600_pipe.h b/src/gallium/drivers/r600/r600_pipe.h
index 6de33cb..21bb535 100644
--- a/src/gallium/drivers/r600/r600_pipe.h
+++ b/src/gallium/drivers/r600/r600_pipe.h
@@ -225,6 +225,21 @@ struct r600_stencil_ref
ubyte writemask[2];
};
+struct r600_constant_buffer
+{
+ struct pipe_resource *buffer;
+ unsigned buffer_offset;
+ unsigned buffer_size;
+};
+
+struct r600_constbuf_state
+{
+ struct r600_atom atom;
+ struct r600_constant_buffer cb[PIPE_MAX_CONSTANT_BUFFERS];
+ uint32_t enabled_mask;
+ uint32_t dirty_mask;
+};
+
struct r600_context {
struct pipe_context context;
struct blitter_context *blitter;
@@ -248,10 +263,6 @@ struct r600_context {
struct pipe_clip_state clip;
struct r600_pipe_shader *ps_shader;
struct r600_pipe_shader *vs_shader;
- struct r600_pipe_state vs_const_buffer;
- struct r600_pipe_resource_state vs_const_buffer_resource[R600_MAX_CONST_BUFFERS];
- struct r600_pipe_state ps_const_buffer;
- struct r600_pipe_resource_state ps_const_buffer_resource[R600_MAX_CONST_BUFFERS];
struct r600_pipe_rasterizer *rasterizer;
struct r600_pipe_state vgt;
struct r600_pipe_state spi;
@@ -282,9 +293,9 @@ struct r600_context {
struct r600_atom r6xx_flush_and_inv_cmd;
struct r600_db_misc_state db_misc_state;
struct r600_atom vertex_buffer_state;
+ struct r600_constbuf_state vs_constbuf_state;
+ struct r600_constbuf_state ps_constbuf_state;
- /* Below are variables from the old r600_context.
- */
struct radeon_winsys_cs *cs;
struct r600_range *range;
@@ -488,6 +499,7 @@ void r600_bind_ps_shader(struct pipe_context *ctx, void *state);
void r600_bind_vs_shader(struct pipe_context *ctx, void *state);
void r600_delete_ps_shader(struct pipe_context *ctx, void *state);
void r600_delete_vs_shader(struct pipe_context *ctx, void *state);
+void r600_constant_buffers_dirty(struct r600_context *rctx, struct r600_constbuf_state *state);
void r600_set_constant_buffer(struct pipe_context *ctx, uint shader, uint index,
struct pipe_resource *buffer);
struct pipe_stream_output_target *
diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index 96df9cb..3a304d3 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -1733,11 +1733,75 @@ static void r600_emit_vertex_buffers(struct r600_context *rctx, struct r600_atom
}
}
+static void r600_emit_constant_buffers(struct r600_context *rctx,
+ struct r600_constbuf_state *state,
+ unsigned buffer_id_base,
+ unsigned reg_alu_constbuf_size,
+ unsigned reg_alu_const_cache)
+{
+ struct radeon_winsys_cs *cs = rctx->cs;
+ uint32_t dirty_mask = state->dirty_mask;
+
+ while (dirty_mask) {
+ struct r600_constant_buffer *cb;
+ struct r600_resource *rbuffer;
+ unsigned offset;
+ unsigned buffer_index = ffs(dirty_mask) - 1;
+
+ cb = &state->cb[buffer_index];
+ rbuffer = (struct r600_resource*)cb->buffer;
+ assert(rbuffer);
+
+ offset = cb->buffer_offset;
+
+ r600_write_context_reg(cs, reg_alu_constbuf_size + buffer_index * 4,
+ ALIGN_DIVUP(cb->buffer_size >> 4, 16));
+ r600_write_context_reg(cs, reg_alu_const_cache + buffer_index * 4, offset >> 8);
+
+ r600_write_value(cs, PKT3(PKT3_NOP, 0, 0));
+ r600_write_value(cs, r600_context_bo_reloc(rctx, rbuffer, RADEON_USAGE_READ));
+
+ r600_write_value(cs, PKT3(PKT3_SET_RESOURCE, 7, 0));
+ r600_write_value(cs, (buffer_id_base + buffer_index) * 7);
+ r600_write_value(cs, offset); /* RESOURCEi_WORD0 */
+ r600_write_value(cs, rbuffer->buf->size - offset - 1); /* RESOURCEi_WORD1 */
+ r600_write_value(cs, /* RESOURCEi_WORD2 */
+ S_038008_ENDIAN_SWAP(r600_endian_swap(32)) |
+ S_038008_STRIDE(16));
+ r600_write_value(cs, 0); /* RESOURCEi_WORD3 */
+ r600_write_value(cs, 0); /* RESOURCEi_WORD4 */
+ r600_write_value(cs, 0); /* RESOURCEi_WORD5 */
+ r600_write_value(cs, 0xc0000000); /* RESOURCEi_WORD6 */
+
+ r600_write_value(cs, PKT3(PKT3_NOP, 0, 0));
+ r600_write_value(cs, r600_context_bo_reloc(rctx, rbuffer, RADEON_USAGE_READ));
+
+ dirty_mask &= ~(1 << buffer_index);
+ }
+ state->dirty_mask = 0;
+}
+
+static void r600_emit_vs_constant_buffer(struct r600_context *rctx, struct r600_atom *atom)
+{
+ r600_emit_constant_buffers(rctx, &rctx->vs_constbuf_state, 160,
+ R_028180_ALU_CONST_BUFFER_SIZE_VS_0,
+ R_028980_ALU_CONST_CACHE_VS_0);
+}
+
+static void r600_emit_ps_constant_buffer(struct r600_context *rctx, struct r600_atom *atom)
+{
+ r600_emit_constant_buffers(rctx, &rctx->ps_constbuf_state, 0,
+ R_028140_ALU_CONST_BUFFER_SIZE_PS_0,
+ R_028940_ALU_CONST_CACHE_PS_0);
+}
+
void r600_init_state_functions(struct r600_context *rctx)
{
r600_init_atom(&rctx->db_misc_state.atom, r600_emit_db_misc_state, 4, 0);
r600_atom_dirty(rctx, &rctx->db_misc_state.atom);
r600_init_atom(&rctx->vertex_buffer_state, r600_emit_vertex_buffers, 0, 0);
+ r600_init_atom(&rctx->vs_constbuf_state.atom, r600_emit_vs_constant_buffer, 0, 0);
+ r600_init_atom(&rctx->ps_constbuf_state.atom, r600_emit_ps_constant_buffer, 0, 0);
rctx->context.create_blend_state = r600_create_blend_state;
rctx->context.create_depth_stencil_alpha_state = r600_create_dsa_state;
diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
index c906e9f..22deb47 100644
--- a/src/gallium/drivers/r600/r600_state_common.c
+++ b/src/gallium/drivers/r600/r600_state_common.c
@@ -519,87 +519,54 @@ static void r600_update_alpha_ref(struct r600_context *rctx)
rctx->alpha_ref_dirty = false;
}
+void r600_constant_buffers_dirty(struct r600_context *rctx, struct r600_constbuf_state *state)
+{
+ state->atom.num_dw = rctx->chip_class >= EVERGREEN ? util_bitcount(state->dirty_mask)*20
+ : util_bitcount(state->dirty_mask)*19;
+ r600_atom_dirty(rctx, &state->atom);
+}
+
void r600_set_constant_buffer(struct pipe_context *ctx, uint shader, uint index,
struct pipe_resource *buffer)
{
struct r600_context *rctx = (struct r600_context *)ctx;
struct r600_resource *rbuffer = r600_resource(buffer);
- struct r600_pipe_resource_state *rstate;
- uint64_t va_offset;
+ struct r600_constbuf_state *state;
+ struct r600_constant_buffer *cb;
uint32_t offset;
+ switch (shader) {
+ case PIPE_SHADER_VERTEX:
+ state = &rctx->vs_constbuf_state;
+ break;
+ case PIPE_SHADER_FRAGMENT:
+ state = &rctx->ps_constbuf_state;
+ break;
+ default:
+ return;
+ }
+
/* Note that the state tracker can unbind constant buffers by
* passing NULL here.
*/
if (buffer == NULL) {
+ state->enabled_mask &= ~(1 << index);
+ state->dirty_mask &= ~(1 << index);
+ pipe_resource_reference(&state->cb[index].buffer, NULL);
return;
}
r600_inval_shader_cache(rctx);
-
r600_upload_const_buffer(rctx, &rbuffer, &offset);
- va_offset = r600_resource_va(ctx->screen, (void*)rbuffer);
- va_offset += offset;
- va_offset >>= 8;
- switch (shader) {
- case PIPE_SHADER_VERTEX:
- rctx->vs_const_buffer.nregs = 0;
- r600_pipe_state_add_reg(&rctx->vs_const_buffer,
- R_028180_ALU_CONST_BUFFER_SIZE_VS_0 + index * 4,
- ALIGN_DIVUP(buffer->width0 >> 4, 16),
- NULL, 0);
- r600_pipe_state_add_reg(&rctx->vs_const_buffer,
- R_028980_ALU_CONST_CACHE_VS_0 + index * 4,
- va_offset, rbuffer, RADEON_USAGE_READ);
- r600_context_pipe_state_set(rctx, &rctx->vs_const_buffer);
-
- rstate = &rctx->vs_const_buffer_resource[index];
- if (!rstate->id) {
- if (rctx->chip_class >= EVERGREEN) {
- evergreen_pipe_init_buffer_resource(rctx, rstate);
- } else {
- r600_pipe_init_buffer_resource(rctx, rstate);
- }
- }
+ cb = &state->cb[index];
+ pipe_resource_reference(&cb->buffer, &rbuffer->b.b.b);
+ cb->buffer_offset = offset;
+ cb->buffer_size = buffer->width0;
- if (rctx->chip_class >= EVERGREEN) {
- evergreen_pipe_mod_buffer_resource(ctx, rstate, rbuffer, offset, 16, RADEON_USAGE_READ);
- } else {
- r600_pipe_mod_buffer_resource(rstate, rbuffer, offset, 16, RADEON_USAGE_READ);
- }
- r600_context_pipe_state_set_vs_resource(rctx, rstate, index);
- break;
- case PIPE_SHADER_FRAGMENT:
- rctx->ps_const_buffer.nregs = 0;
- r600_pipe_state_add_reg(&rctx->ps_const_buffer,
- R_028140_ALU_CONST_BUFFER_SIZE_PS_0,
- ALIGN_DIVUP(buffer->width0 >> 4, 16),
- NULL, 0);
- r600_pipe_state_add_reg(&rctx->ps_const_buffer,
- R_028940_ALU_CONST_CACHE_PS_0,
- va_offset, rbuffer, RADEON_USAGE_READ);
- r600_context_pipe_state_set(rctx, &rctx->ps_const_buffer);
-
- rstate = &rctx->ps_const_buffer_resource[index];
- if (!rstate->id) {
- if (rctx->chip_class >= EVERGREEN) {
- evergreen_pipe_init_buffer_resource(rctx, rstate);
- } else {
- r600_pipe_init_buffer_resource(rctx, rstate);
- }
- }
- if (rctx->chip_class >= EVERGREEN) {
- evergreen_pipe_mod_buffer_resource(ctx, rstate, rbuffer, offset, 16, RADEON_USAGE_READ);
- } else {
- r600_pipe_mod_buffer_resource(rstate, rbuffer, offset, 16, RADEON_USAGE_READ);
- }
- r600_context_pipe_state_set_ps_resource(rctx, rstate, index);
- break;
- default:
- R600_ERR("unsupported %d\n", shader);
- return;
- }
+ state->enabled_mask |= 1 << index;
+ state->dirty_mask |= 1 << index;
+ r600_constant_buffers_dirty(rctx, state);
if (buffer != &rbuffer->b.b.b)
pipe_resource_reference((struct pipe_resource**)&rbuffer, NULL);
--
1.7.5.4
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