diff options
Diffstat (limited to 'src/intel')
| -rw-r--r-- | src/intel/blorp/blorp_genX_exec.h | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/src/intel/blorp/blorp_genX_exec.h b/src/intel/blorp/blorp_genX_exec.h index d049eb0912e..65a981d4ce2 100644 --- a/src/intel/blorp/blorp_genX_exec.h +++ b/src/intel/blorp/blorp_genX_exec.h @@ -293,8 +293,10 @@ blorp_emit_vertex_elements(struct blorp_batch *batch, * 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. + * dw1: Render Target Array Index. Below vertex fetcher gets programmed + * to assign this with primitive instance identifier which will be + * used for layered clears. All other renders have only one instance + * and therefore the value will be effectively zero. * 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, @@ -313,7 +315,7 @@ blorp_emit_vertex_elements(struct blorp_batch *batch, * "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 + * zero and W to one. Header words dw0,2,3 are 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. @@ -327,7 +329,16 @@ blorp_emit_vertex_elements(struct blorp_batch *batch, ve[0].SourceElementFormat = ISL_FORMAT_R32G32B32A32_FLOAT; ve[0].SourceElementOffset = 0; ve[0].Component0Control = VFCOMP_STORE_0; + + /* From Gen8 onwards hardware is no more instructed to overwrite components + * using an element specifier. Instead one has separate 3DSTATE_VF_SGVS + * (System Generated Value Setup) state packet for it. + */ +#if GEN_GEN >= 8 ve[0].Component1Control = VFCOMP_STORE_0; +#else + ve[0].Component1Control = VFCOMP_STORE_IID; +#endif ve[0].Component2Control = VFCOMP_STORE_0; ve[0].Component3Control = VFCOMP_STORE_0; @@ -361,7 +372,14 @@ blorp_emit_vertex_elements(struct blorp_batch *batch, } #if GEN_GEN >= 8 - blorp_emit(batch, GENX(3DSTATE_VF_SGVS), sgvs); + /* Overwrite Render Target Array Index (2nd dword) in the VUE header with + * primitive instance identifier. This is used for layered clears. + */ + blorp_emit(batch, GENX(3DSTATE_VF_SGVS), sgvs) { + sgvs.InstanceIDEnable = true; + sgvs.InstanceIDComponentNumber = COMP_1; + sgvs.InstanceIDElementOffset = 0; + } for (unsigned i = 0; i < num_elements; i++) { blorp_emit(batch, GENX(3DSTATE_VF_INSTANCING), vf) { |