diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/genX_blorp_exec.c | 213 |
1 files changed, 212 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/genX_blorp_exec.c b/src/mesa/drivers/dri/i965/genX_blorp_exec.c index 283b1525067..d19e2358090 100644 --- a/src/mesa/drivers/dri/i965/genX_blorp_exec.c +++ b/src/mesa/drivers/dri/i965/genX_blorp_exec.c @@ -85,6 +85,7 @@ __gen_combine_address(struct brw_context *brw, void *location, #include "genxml/genX_pack.h" #define _blorp_cmd_length(cmd) cmd ## _length +#define _blorp_cmd_length_bias(cmd) cmd ## _length_bias #define _blorp_cmd_header(cmd) cmd ## _header #define _blorp_cmd_pack(cmd) cmd ## _pack @@ -95,6 +96,215 @@ __gen_combine_address(struct brw_context *brw, void *location, _blorp_cmd_pack(cmd)(brw, (void *)_dst, &name), \ _dst = NULL) +#define blorp_emitn(batch, cmd, n) ({ \ + uint32_t *_dw = blorp_emit_dwords(batch, n); \ + struct cmd template = { \ + _blorp_cmd_header(cmd), \ + .DWordLength = n - _blorp_cmd_length_bias(cmd), \ + }; \ + _blorp_cmd_pack(cmd)(batch, _dw, &template); \ + _dw + 1; /* Array starts at dw[1] */ \ + }) + +static void +blorp_emit_vertex_data(struct brw_context *brw, + const struct brw_blorp_params *params, + struct blorp_address *addr, + uint32_t *size) +{ + const float vertices[] = { + /* v0 */ (float)params->x0, (float)params->y1, + /* v1 */ (float)params->x1, (float)params->y1, + /* v2 */ (float)params->x0, (float)params->y0, + }; + + uint32_t offset; + void *data = brw_state_batch(brw, AUB_TRACE_VERTEX_BUFFER, + sizeof(vertices), 32, &offset); + memcpy(data, vertices, sizeof(vertices)); + + *addr = (struct blorp_address) { + .buffer = brw->batch.bo, + .read_domains = I915_GEM_DOMAIN_VERTEX, + .write_domain = 0, + .offset = offset, + }; + *size = sizeof(vertices); +} + +static void +blorp_emit_input_varying_data(struct brw_context *brw, + const struct brw_blorp_params *params, + struct blorp_address *addr, + uint32_t *size) +{ + const unsigned vec4_size_in_bytes = 4 * sizeof(float); + const unsigned max_num_varyings = + DIV_ROUND_UP(sizeof(params->wm_inputs), vec4_size_in_bytes); + const unsigned num_varyings = params->wm_prog_data->num_varying_inputs; + + *size = num_varyings * vec4_size_in_bytes; + + const float *const inputs_src = (const float *)¶ms->wm_inputs; + uint32_t offset; + float *inputs = brw_state_batch(brw, AUB_TRACE_VERTEX_BUFFER, + *size, 32, &offset); + + /* Walk over the attribute slots, determine if the attribute is used by + * the program and when necessary copy the values from the input storage to + * the vertex data buffer. + */ + for (unsigned i = 0; i < max_num_varyings; i++) { + const gl_varying_slot attr = VARYING_SLOT_VAR0 + i; + + if (!(params->wm_prog_data->inputs_read & BITFIELD64_BIT(attr))) + continue; + + memcpy(inputs, inputs_src + i * 4, vec4_size_in_bytes); + + inputs += 4; + } + + *addr = (struct blorp_address) { + .buffer = brw->batch.bo, + .read_domains = I915_GEM_DOMAIN_VERTEX, + .write_domain = 0, + .offset = offset, + }; +} + +static void +blorp_emit_vertex_buffers(struct brw_context *brw, + const struct brw_blorp_params *params) +{ + struct GENX(VERTEX_BUFFER_STATE) vb[2]; + memset(vb, 0, sizeof(vb)); + + unsigned num_buffers = 1; + + uint32_t size; + blorp_emit_vertex_data(brw, params, &vb[0].BufferStartingAddress, &size); + vb[0].VertexBufferIndex = 0; + vb[0].BufferPitch = 2 * sizeof(float); + vb[0].BufferAccessType = VERTEXDATA; + vb[0].EndAddress = vb[0].BufferStartingAddress; + vb[0].EndAddress.offset += size - 1; + + if (params->wm_prog_data && params->wm_prog_data->num_varying_inputs) { + blorp_emit_input_varying_data(brw, params, + &vb[1].BufferStartingAddress, &size); + vb[1].VertexBufferIndex = 1; + vb[1].BufferPitch = 0; + vb[1].BufferAccessType = INSTANCEDATA; + vb[1].EndAddress = vb[1].BufferStartingAddress; + vb[1].EndAddress.offset += size; + num_buffers++; + } + + const unsigned num_dwords = + 1 + GENX(VERTEX_BUFFER_STATE_length) * num_buffers; + uint32_t *dw = blorp_emitn(brw, GENX(3DSTATE_VERTEX_BUFFERS), num_dwords); + + for (unsigned i = 0; i < num_buffers; i++) { + GENX(VERTEX_BUFFER_STATE_pack)(brw, dw, &vb[i]); + dw += GENX(VERTEX_BUFFER_STATE_length); + } +} + +static void +blorp_emit_vertex_elements(struct brw_context *brw, + const struct brw_blorp_params *params) +{ + const unsigned num_varyings = + params->wm_prog_data ? params->wm_prog_data->num_varying_inputs : 0; + const unsigned num_elements = 2 + num_varyings; + + struct GENX(VERTEX_ELEMENT_STATE) ve[num_elements]; + memset(ve, 0, num_elements * sizeof(*ve)); + + /* Setup VBO for the rectangle primitive.. + * + * A rectangle primitive (3DPRIM_RECTLIST) consists of only three + * vertices. The vertices reside in screen space with DirectX + * coordinates (that is, (0, 0) is the upper left corner). + * + * v2 ------ implied + * | | + * | | + * v0 ----- v1 + * + * Since the VS is disabled, the clipper loads each VUE directly from + * the URB. This is controlled by the 3DSTATE_VERTEX_BUFFERS and + * 3DSTATE_VERTEX_ELEMENTS packets below. The VUE contents are as follows: + * dw0: Reserved, MBZ. + * dw1: Render Target Array Index. The HiZ op does not use indexed + * vertices, so set the dword to 0. + * dw2: Viewport Index. The HiZ op disables viewport mapping and + * scissoring, so set the dword to 0. + * dw3: Point Width: The HiZ op does not emit the POINTLIST primitive, + * so set the dword to 0. + * dw4: Vertex Position X. + * dw5: Vertex Position Y. + * dw6: Vertex Position Z. + * dw7: Vertex Position W. + * + * dw8: Flat vertex input 0 + * dw9: Flat vertex input 1 + * ... + * dwn: Flat vertex input n - 8 + * + * 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. + * Flat inputs are program constants that are not interpolated. Moreover + * their values will be the same between vertices. + * + * See the vertex element setup below. + */ + ve[0].VertexBufferIndex = 0; + ve[0].Valid = true; + ve[0].SourceElementFormat = ISL_FORMAT_R32G32B32A32_FLOAT; + ve[0].SourceElementOffset = 0; + ve[0].Component0Control = VFCOMP_STORE_0; + ve[0].Component1Control = VFCOMP_STORE_0; + ve[0].Component2Control = VFCOMP_STORE_0; + ve[0].Component3Control = VFCOMP_STORE_0; + + ve[1].VertexBufferIndex = 0; + ve[1].Valid = true; + ve[1].SourceElementFormat = ISL_FORMAT_R32G32_FLOAT; + ve[1].SourceElementOffset = 0; + ve[1].Component0Control = VFCOMP_STORE_SRC; + ve[1].Component1Control = VFCOMP_STORE_SRC; + ve[1].Component2Control = VFCOMP_STORE_0; + ve[1].Component3Control = VFCOMP_STORE_1_FP; + + for (unsigned i = 0; i < num_varyings; ++i) { + ve[i + 2].VertexBufferIndex = 1; + ve[i + 2].Valid = true; + ve[i + 2].SourceElementFormat = ISL_FORMAT_R32G32B32A32_FLOAT; + ve[i + 2].SourceElementOffset = i * 4 * sizeof(float); + ve[i + 2].Component0Control = VFCOMP_STORE_SRC; + ve[i + 2].Component1Control = VFCOMP_STORE_SRC; + ve[i + 2].Component2Control = VFCOMP_STORE_SRC; + ve[i + 2].Component3Control = VFCOMP_STORE_SRC; + } + + const unsigned num_dwords = + 1 + GENX(VERTEX_ELEMENT_STATE_length) * num_elements; + uint32_t *dw = blorp_emitn(brw, GENX(3DSTATE_VERTEX_ELEMENTS), num_dwords); + + for (unsigned i = 0; i < num_elements; i++) { + GENX(VERTEX_ELEMENT_STATE_pack)(brw, dw, &ve[i]); + dw += GENX(VERTEX_ELEMENT_STATE_length); + } +} + static void blorp_emit_sf_config(struct brw_context *brw, const struct brw_blorp_params *params) @@ -439,7 +649,8 @@ genX(blorp_exec)(struct brw_context *brw, brw_upload_state_base_address(brw); - gen6_blorp_emit_vertices(brw, params); + blorp_emit_vertex_buffers(brw, params); + blorp_emit_vertex_elements(brw, params); /* 3DSTATE_URB * |