if (rctx->chip_class == CAYMAN) {
r600_store_context_reg(&rs->buffer, CM_R_028BE4_PA_SU_VTX_CNTL,
- S_028C08_PIX_CENTER_HALF(state->gl_rasterization_rules) |
+ S_028C08_PIX_CENTER_HALF(state->half_pixel_center) |
S_028C08_QUANT_MODE(V_028C08_X_1_256TH));
} else {
r600_store_context_reg(&rs->buffer, R_028C08_PA_SU_VTX_CNTL,
- S_028C08_PIX_CENTER_HALF(state->gl_rasterization_rules) |
+ S_028C08_PIX_CENTER_HALF(state->half_pixel_center) |
S_028C08_QUANT_MODE(V_028C08_X_1_256TH));
}
unsigned swizzle_res;
unsigned char swizzle[4];
const struct util_format_description *desc;
+ unsigned offset = view->base.u.buf.first_element * stride;
+ unsigned size = (view->base.u.buf.last_element - view->base.u.buf.first_element + 1) * stride;
swizzle[0] = view->base.swizzle_r;
swizzle[1] = view->base.swizzle_g;
swizzle_res = r600_get_swizzle_combined(desc->swizzle, swizzle, TRUE);
- va = r600_resource_va(ctx->screen, view->base.texture);
+ va = r600_resource_va(ctx->screen, view->base.texture) + offset;
view->tex_resource = &tmp->resource;
view->skip_mip_address_reloc = true;
view->tex_resource_words[0] = va;
- view->tex_resource_words[1] = width0 - 1;
+ view->tex_resource_words[1] = size - 1;
view->tex_resource_words[2] = S_030008_BASE_ADDRESS_HI(va >> 32UL) |
S_030008_STRIDE(stride) |
S_030008_DATA_FORMAT(format) |
surf->db_htile_data_base = va >> 8;
surf->db_htile_surface = S_028ABC_HTILE_WIDTH(1) |
S_028ABC_HTILE_HEIGHT(1) |
+ S_028ABC_FULL_CACHE(1) |
S_028ABC_LINEAR(1);
surf->db_depth_info |= S_028040_TILE_SURFACE_ENABLE(1);
surf->db_preload_control = 0;
(((s2x) & 0xf) << 16) | (((s2y) & 0xf) << 20) | \
(((s3x) & 0xf) << 24) | (((s3y) & 0xf) << 28))
+/* 2xMSAA
+ * There are two locations (-4, 4), (4, -4). */
+static uint32_t sample_locs_2x[] = {
+ FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
+ FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
+ FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
+ FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
+};
+static unsigned max_dist_2x = 4;
+/* 4xMSAA
+ * There are 4 locations: (-2, -2), (2, 2), (-6, 6), (6, -6). */
+static uint32_t sample_locs_4x[] = {
+ FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
+ FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
+ FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
+ FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
+};
+static unsigned max_dist_4x = 6;
+/* 8xMSAA */
+static uint32_t sample_locs_8x[] = {
+ FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
+ FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
+ FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
+ FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
+ FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
+ FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
+ FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
+ FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
+};
+static unsigned max_dist_8x = 7;
+
+static void evergreen_get_sample_position(struct pipe_context *ctx,
+ unsigned sample_count,
+ unsigned sample_index,
+ float *out_value)
+{
+ int offset, index;
+ struct {
+ int idx:4;
+ } val;
+ switch (sample_count) {
+ case 1:
+ default:
+ out_value[0] = out_value[1] = 0.5;
+ break;
+ case 2:
+ offset = 4 * (sample_index * 2);
+ val.idx = (sample_locs_2x[0] >> offset) & 0xf;
+ out_value[0] = (float)(val.idx + 8) / 16.0f;
+ val.idx = (sample_locs_2x[0] >> (offset + 4)) & 0xf;
+ out_value[1] = (float)(val.idx + 8) / 16.0f;
+ break;
+ case 4:
+ offset = 4 * (sample_index * 2);
+ val.idx = (sample_locs_4x[0] >> offset) & 0xf;
+ out_value[0] = (float)(val.idx + 8) / 16.0f;
+ val.idx = (sample_locs_4x[0] >> (offset + 4)) & 0xf;
+ out_value[1] = (float)(val.idx + 8) / 16.0f;
+ break;
+ case 8:
+ offset = 4 * (sample_index % 4 * 2);
+ index = (sample_index / 4);
+ val.idx = (sample_locs_8x[index] >> offset) & 0xf;
+ out_value[0] = (float)(val.idx + 8) / 16.0f;
+ val.idx = (sample_locs_8x[index] >> (offset + 4)) & 0xf;
+ out_value[1] = (float)(val.idx + 8) / 16.0f;
+ break;
+ }
+}
+
static void evergreen_emit_msaa_state(struct r600_context *rctx, int nr_samples)
{
- /* 2xMSAA
- * There are two locations (-4, 4), (4, -4). */
- static uint32_t sample_locs_2x[] = {
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- };
- static unsigned max_dist_2x = 4;
- /* 4xMSAA
- * There are 4 locations: (-2, -2), (2, 2), (-6, 6), (6, -6). */
- static uint32_t sample_locs_4x[] = {
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- };
- static unsigned max_dist_4x = 6;
- /* 8xMSAA */
- static uint32_t sample_locs_8x[] = {
- FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
- FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
- FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
- FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
- FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
- FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
- FILL_SREG(-1, 1, 1, 5, 3, -5, 5, 3),
- FILL_SREG(-7, -1, -3, -7, 7, -3, -5, 7),
- };
- static unsigned max_dist_8x = 7;
struct radeon_winsys_cs *cs = rctx->rings.gfx.cs;
unsigned max_dist = 0;
}
}
+/* Cayman 8xMSAA */
+static uint32_t cm_sample_locs_8x[] = {
+ FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
+ FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
+ FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
+ FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
+ FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
+ FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
+ FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
+ FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
+};
+static unsigned cm_max_dist_8x = 8;
+/* Cayman 16xMSAA */
+static uint32_t cm_sample_locs_16x[] = {
+ FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
+ FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
+ FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
+ FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
+ FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
+ FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
+ FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
+ FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
+ FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
+ FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
+ FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
+ FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
+ FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
+ FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
+ FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
+ FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
+};
+static unsigned cm_max_dist_16x = 8;
+static void cayman_get_sample_position(struct pipe_context *ctx,
+ unsigned sample_count,
+ unsigned sample_index,
+ float *out_value)
+{
+ int offset, index;
+ struct {
+ int idx:4;
+ } val;
+ switch (sample_count) {
+ case 1:
+ default:
+ out_value[0] = out_value[1] = 0.5;
+ break;
+ case 2:
+ offset = 4 * (sample_index * 2);
+ val.idx = (sample_locs_2x[0] >> offset) & 0xf;
+ out_value[0] = (float)(val.idx + 8) / 16.0f;
+ val.idx = (sample_locs_2x[0] >> (offset + 4)) & 0xf;
+ out_value[1] = (float)(val.idx + 8) / 16.0f;
+ break;
+ case 4:
+ offset = 4 * (sample_index * 2);
+ val.idx = (sample_locs_4x[0] >> offset) & 0xf;
+ out_value[0] = (float)(val.idx + 8) / 16.0f;
+ val.idx = (sample_locs_4x[0] >> (offset + 4)) & 0xf;
+ out_value[1] = (float)(val.idx + 8) / 16.0f;
+ break;
+ case 8:
+ offset = 4 * (sample_index % 4 * 2);
+ index = (sample_index / 4) * 4;
+ val.idx = (cm_sample_locs_8x[index] >> offset) & 0xf;
+ out_value[0] = (float)(val.idx + 8) / 16.0f;
+ val.idx = (cm_sample_locs_8x[index] >> (offset + 4)) & 0xf;
+ out_value[1] = (float)(val.idx + 8) / 16.0f;
+ break;
+ case 16:
+ offset = 4 * (sample_index % 4 * 2);
+ index = (sample_index / 4) * 4;
+ val.idx = (cm_sample_locs_16x[index] >> offset) & 0xf;
+ out_value[0] = (float)(val.idx + 8) / 16.0f;
+ val.idx = (cm_sample_locs_16x[index] >> (offset + 4)) & 0xf;
+ out_value[1] = (float)(val.idx + 8) / 16.0f;
+ break;
+ }
+}
+
static void cayman_emit_msaa_state(struct r600_context *rctx, int nr_samples)
{
- /* 2xMSAA
- * There are two locations (-4, 4), (4, -4). */
- static uint32_t sample_locs_2x[] = {
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- FILL_SREG(-4, 4, 4, -4, -4, 4, 4, -4),
- };
- static unsigned max_dist_2x = 4;
- /* 4xMSAA
- * There are 4 locations: (-2, -2), (2, 2), (-6, 6), (6, -6). */
- static uint32_t sample_locs_4x[] = {
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- FILL_SREG(-2, -2, 2, 2, -6, 6, 6, -6),
- };
- static unsigned max_dist_4x = 6;
- /* 8xMSAA */
- static uint32_t sample_locs_8x[] = {
- FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
- FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
- FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
- FILL_SREG(-2, -5, 3, -4, -1, 5, -6, -2),
- FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
- FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
- FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
- FILL_SREG( 6, 0, 0, 0, -5, 3, 4, 4),
- };
- static unsigned max_dist_8x = 8;
- /* 16xMSAA */
- static uint32_t sample_locs_16x[] = {
- FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
- FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
- FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
- FILL_SREG(-7, -3, 7, 3, 1, -5, -5, 5),
- FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
- FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
- FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
- FILL_SREG(-3, -7, 3, 7, 5, -1, -1, 1),
- FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
- FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
- FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
- FILL_SREG(-8, -6, 4, 2, 2, -8, -2, 6),
- FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
- FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
- FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
- FILL_SREG(-4, -2, 0, 4, 6, -4, -6, 0),
- };
- static unsigned max_dist_16x = 8;
+
struct radeon_winsys_cs *cs = rctx->rings.gfx.cs;
unsigned max_dist = 0;
break;
case 8:
r600_write_context_reg_seq(cs, CM_R_028BF8_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0, 14);
- r600_write_value(cs, sample_locs_8x[0]);
- r600_write_value(cs, sample_locs_8x[4]);
+ r600_write_value(cs, cm_sample_locs_8x[0]);
+ r600_write_value(cs, cm_sample_locs_8x[4]);
r600_write_value(cs, 0);
r600_write_value(cs, 0);
- r600_write_value(cs, sample_locs_8x[1]);
- r600_write_value(cs, sample_locs_8x[5]);
+ r600_write_value(cs, cm_sample_locs_8x[1]);
+ r600_write_value(cs, cm_sample_locs_8x[5]);
r600_write_value(cs, 0);
r600_write_value(cs, 0);
- r600_write_value(cs, sample_locs_8x[2]);
- r600_write_value(cs, sample_locs_8x[6]);
+ r600_write_value(cs, cm_sample_locs_8x[2]);
+ r600_write_value(cs, cm_sample_locs_8x[6]);
r600_write_value(cs, 0);
r600_write_value(cs, 0);
- r600_write_value(cs, sample_locs_8x[3]);
- r600_write_value(cs, sample_locs_8x[7]);
- max_dist = max_dist_8x;
+ r600_write_value(cs, cm_sample_locs_8x[3]);
+ r600_write_value(cs, cm_sample_locs_8x[7]);
+ max_dist = cm_max_dist_8x;
break;
case 16:
r600_write_context_reg_seq(cs, CM_R_028BF8_PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0, 16);
- r600_write_value(cs, sample_locs_16x[0]);
- r600_write_value(cs, sample_locs_16x[4]);
- r600_write_value(cs, sample_locs_16x[8]);
- r600_write_value(cs, sample_locs_16x[12]);
- r600_write_value(cs, sample_locs_16x[1]);
- r600_write_value(cs, sample_locs_16x[5]);
- r600_write_value(cs, sample_locs_16x[9]);
- r600_write_value(cs, sample_locs_16x[13]);
- r600_write_value(cs, sample_locs_16x[2]);
- r600_write_value(cs, sample_locs_16x[6]);
- r600_write_value(cs, sample_locs_16x[10]);
- r600_write_value(cs, sample_locs_16x[14]);
- r600_write_value(cs, sample_locs_16x[3]);
- r600_write_value(cs, sample_locs_16x[7]);
- r600_write_value(cs, sample_locs_16x[11]);
- r600_write_value(cs, sample_locs_16x[15]);
- max_dist = max_dist_16x;
+ r600_write_value(cs, cm_sample_locs_16x[0]);
+ r600_write_value(cs, cm_sample_locs_16x[4]);
+ r600_write_value(cs, cm_sample_locs_16x[8]);
+ r600_write_value(cs, cm_sample_locs_16x[12]);
+ r600_write_value(cs, cm_sample_locs_16x[1]);
+ r600_write_value(cs, cm_sample_locs_16x[5]);
+ r600_write_value(cs, cm_sample_locs_16x[9]);
+ r600_write_value(cs, cm_sample_locs_16x[13]);
+ r600_write_value(cs, cm_sample_locs_16x[2]);
+ r600_write_value(cs, cm_sample_locs_16x[6]);
+ r600_write_value(cs, cm_sample_locs_16x[10]);
+ r600_write_value(cs, cm_sample_locs_16x[14]);
+ r600_write_value(cs, cm_sample_locs_16x[3]);
+ r600_write_value(cs, cm_sample_locs_16x[7]);
+ r600_write_value(cs, cm_sample_locs_16x[11]);
+ r600_write_value(cs, cm_sample_locs_16x[15]);
+ max_dist = cm_max_dist_16x;
break;
}
struct r600_constbuf_state *state,
unsigned buffer_id_base,
unsigned reg_alu_constbuf_size,
- unsigned reg_alu_const_cache)
+ unsigned reg_alu_const_cache,
+ unsigned pkt_flags)
{
struct radeon_winsys_cs *cs = rctx->rings.gfx.cs;
uint32_t dirty_mask = state->dirty_mask;
va = r600_resource_va(&rctx->screen->screen, &rbuffer->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_context_reg_flag(cs, reg_alu_constbuf_size + buffer_index * 4,
+ ALIGN_DIVUP(cb->buffer_size >> 4, 16), pkt_flags);
+ r600_write_context_reg_flag(cs, reg_alu_const_cache + buffer_index * 4, va >> 8,
+ pkt_flags);
- r600_write_value(cs, PKT3(PKT3_NOP, 0, 0));
+ r600_write_value(cs, PKT3(PKT3_NOP, 0, 0) | pkt_flags);
r600_write_value(cs, r600_context_bo_reloc(rctx, &rctx->rings.gfx, rbuffer, RADEON_USAGE_READ));
- r600_write_value(cs, PKT3(PKT3_SET_RESOURCE, 8, 0));
+ r600_write_value(cs, PKT3(PKT3_SET_RESOURCE, 8, 0) | pkt_flags);
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, 0); /* RESOURCEi_WORD6 */
r600_write_value(cs, 0xc0000000); /* RESOURCEi_WORD7 */
- r600_write_value(cs, PKT3(PKT3_NOP, 0, 0));
+ r600_write_value(cs, PKT3(PKT3_NOP, 0, 0) | pkt_flags);
r600_write_value(cs, r600_context_bo_reloc(rctx, &rctx->rings.gfx, rbuffer, RADEON_USAGE_READ));
dirty_mask &= ~(1 << buffer_index);
{
evergreen_emit_constant_buffers(rctx, &rctx->constbuf_state[PIPE_SHADER_VERTEX], 176,
R_028180_ALU_CONST_BUFFER_SIZE_VS_0,
- R_028980_ALU_CONST_CACHE_VS_0);
+ R_028980_ALU_CONST_CACHE_VS_0,
+ 0 /* PKT3 flags */);
}
static void evergreen_emit_gs_constant_buffers(struct r600_context *rctx, struct r600_atom *atom)
{
evergreen_emit_constant_buffers(rctx, &rctx->constbuf_state[PIPE_SHADER_GEOMETRY], 336,
R_0281C0_ALU_CONST_BUFFER_SIZE_GS_0,
- R_0289C0_ALU_CONST_CACHE_GS_0);
+ R_0289C0_ALU_CONST_CACHE_GS_0,
+ 0 /* PKT3 flags */);
}
static void evergreen_emit_ps_constant_buffers(struct r600_context *rctx, struct r600_atom *atom)
{
evergreen_emit_constant_buffers(rctx, &rctx->constbuf_state[PIPE_SHADER_FRAGMENT], 0,
R_028140_ALU_CONST_BUFFER_SIZE_PS_0,
- R_028940_ALU_CONST_CACHE_PS_0);
+ R_028940_ALU_CONST_CACHE_PS_0,
+ 0 /* PKT3 flags */);
+}
+
+static void evergreen_emit_cs_constant_buffers(struct r600_context *rctx, struct r600_atom *atom)
+{
+ evergreen_emit_constant_buffers(rctx, &rctx->constbuf_state[PIPE_SHADER_COMPUTE], 816,
+ R_028FC0_ALU_CONST_BUFFER_SIZE_LS_0,
+ R_028F40_ALU_CONST_CACHE_LS_0,
+ RADEON_CP_PACKET3_COMPUTE_MODE);
}
static void evergreen_emit_sampler_views(struct r600_context *rctx,
r600_init_atom(rctx, &rctx->constbuf_state[PIPE_SHADER_VERTEX].atom, id++, evergreen_emit_vs_constant_buffers, 0);
r600_init_atom(rctx, &rctx->constbuf_state[PIPE_SHADER_GEOMETRY].atom, id++, evergreen_emit_gs_constant_buffers, 0);
r600_init_atom(rctx, &rctx->constbuf_state[PIPE_SHADER_FRAGMENT].atom, id++, evergreen_emit_ps_constant_buffers, 0);
+ r600_init_atom(rctx, &rctx->constbuf_state[PIPE_SHADER_COMPUTE].atom, id++, evergreen_emit_cs_constant_buffers, 0);
/* shader program */
r600_init_atom(rctx, &rctx->cs_shader_state.atom, id++, evergreen_emit_cs_shader, 0);
/* sampler */
rctx->context.set_framebuffer_state = evergreen_set_framebuffer_state;
rctx->context.set_polygon_stipple = evergreen_set_polygon_stipple;
rctx->context.set_scissor_state = evergreen_set_scissor_state;
+
+ if (rctx->chip_class == EVERGREEN)
+ rctx->context.get_sample_position = evergreen_get_sample_position;
+ else
+ rctx->context.get_sample_position = cayman_get_sample_position;
evergreen_init_compute_state_functions(rctx);
}