diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_blorp.cpp | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_blorp.cpp b/src/mesa/drivers/dri/i965/gen6_blorp.cpp index b741e19abc4..cf30f71ea51 100644 --- a/src/mesa/drivers/dri/i965/gen6_blorp.cpp +++ b/src/mesa/drivers/dri/i965/gen6_blorp.cpp @@ -159,14 +159,21 @@ gen6_blorp_emit_vertices(struct brw_context *brw, * * For details, see the Sandybridge PRM, Volume 2, Part 1, Section 1.5.1 * "Vertex URB Entry (VUE) Formats". + * + * Only vertex position X and Y are going to be variable, Z is fixed to + * zero and W to one. Header words dw0-3 are all zero. There is no need to + * include the fixed values in the vertex buffer. Vertex fetcher can be + * instructed to fill vertex elements with constant values of one and zero + * instead of reading them from the buffer. See the vertex element setup + * below. */ { float *vertex_data; const float vertices[] = { - /* v0 */ 0, 0, 0, 0, (float)params->x0, (float)params->y1, 0, 1, - /* v1 */ 0, 0, 0, 0, (float)params->x1, (float)params->y1, 0, 1, - /* v2 */ 0, 0, 0, 0, (float)params->x0, (float)params->y0, 0, 1, + /* v0 */ (float)params->x0, (float)params->y1, + /* v1 */ (float)params->x1, (float)params->y1, + /* v2 */ (float)params->x0, (float)params->y0, }; vertex_data = (float *) brw_state_batch(brw, AUB_TRACE_VERTEX_BUFFER, @@ -174,7 +181,7 @@ gen6_blorp_emit_vertices(struct brw_context *brw, &vertex_offset); memcpy(vertex_data, vertices, sizeof(vertices)); - const unsigned blorp_num_vue_elems = 8; + const unsigned blorp_num_vue_elems = 2; gen6_blorp_emit_vertex_buffer_state(brw, blorp_num_vue_elems, sizeof(vertices), vertex_offset); } @@ -194,18 +201,18 @@ gen6_blorp_emit_vertices(struct brw_context *brw, OUT_BATCH(GEN6_VE0_VALID | BRW_SURFACEFORMAT_R32G32B32A32_FLOAT << BRW_VE0_FORMAT_SHIFT | 0 << BRW_VE0_SRC_OFFSET_SHIFT); - OUT_BATCH(BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_0_SHIFT | - BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_1_SHIFT | - BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_2_SHIFT | - BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_3_SHIFT); + OUT_BATCH(BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_0_SHIFT | + BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_1_SHIFT | + BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_2_SHIFT | + BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_3_SHIFT); /* Element 1 */ OUT_BATCH(GEN6_VE0_VALID | - BRW_SURFACEFORMAT_R32G32B32A32_FLOAT << BRW_VE0_FORMAT_SHIFT | - 16 << BRW_VE0_SRC_OFFSET_SHIFT); + BRW_SURFACEFORMAT_R32G32_FLOAT << BRW_VE0_FORMAT_SHIFT | + 0 << BRW_VE0_SRC_OFFSET_SHIFT); OUT_BATCH(BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_0_SHIFT | BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_1_SHIFT | - BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_2_SHIFT | - BRW_VE1_COMPONENT_STORE_SRC << BRW_VE1_COMPONENT_3_SHIFT); + BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_2_SHIFT | + BRW_VE1_COMPONENT_STORE_1_FLT << BRW_VE1_COMPONENT_3_SHIFT); ADVANCE_BATCH(); } } |