diff options
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pt_so_emit.c | 2 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_vbuf.h | 8 | ||||
| -rw-r--r-- | src/gallium/docs/d3d11ddi.txt | 9 | ||||
| -rw-r--r-- | src/gallium/docs/source/context.rst | 17 | ||||
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_prim_vbuf.c | 10 | ||||
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_screen.c | 2 | ||||
| -rw-r--r-- | src/gallium/include/pipe/p_defines.h | 1 |
7 files changed, 43 insertions, 6 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pt_so_emit.c b/src/gallium/auxiliary/draw/draw_pt_so_emit.c index b982e4c529..8a065a378b 100644 --- a/src/gallium/auxiliary/draw/draw_pt_so_emit.c +++ b/src/gallium/auxiliary/draw/draw_pt_so_emit.c @@ -163,6 +163,8 @@ void draw_pt_so_emit( struct pt_so_emit *emit, stride, ~0); translate->run(translate, 0, vertex_count, draw->instance_id, so_buffer); + + render->set_stream_output_info(render, 0, vertex_count); } diff --git a/src/gallium/auxiliary/draw/draw_vbuf.h b/src/gallium/auxiliary/draw/draw_vbuf.h index 83ae26a9c2..8d9768246e 100644 --- a/src/gallium/auxiliary/draw/draw_vbuf.h +++ b/src/gallium/auxiliary/draw/draw_vbuf.h @@ -117,6 +117,14 @@ struct vbuf_render { void (*release_vertices)( struct vbuf_render * ); void (*destroy)( struct vbuf_render * ); + + + /** + * Called after writing data to the stream out buffers + */ + void (*set_stream_output_info)( struct vbuf_render *vbufr, + unsigned buffer_index, + unsigned vertices_count ); }; diff --git a/src/gallium/docs/d3d11ddi.txt b/src/gallium/docs/d3d11ddi.txt index e3368fdbd6..0954c2926d 100644 --- a/src/gallium/docs/d3d11ddi.txt +++ b/src/gallium/docs/d3d11ddi.txt @@ -177,7 +177,7 @@ CreateElementLayout -> create_vertex_elements_state ! D3D11 has an extra flag (InputSlotClass) that is the same as instance_divisor == 0 CreateGeometryShader -> create_gs_state -CreateGeometryShaderWithStreamOutput -> create_gs_state +CreateGeometryShaderWithStreamOutput -> create_gs_state + create_stream_output_state CreatePixelShader -> create_fs_state CreateVertexShader -> create_vs_state > bytecode is different (see D3d10tokenizedprogramformat.hpp) @@ -220,7 +220,6 @@ CreateResource -> texture_create or buffer_create # Note that hardware often has the implicit rule, so the D3D11 interface seems to make little sense # Also, the D3D11 API does not allow the user to specify mipmap sizes, so this really seems a dubious decision on Microsoft's part - D3D11 supports specifying initial data to write in the resource - - Gallium lacks support for stream output buffer usage - Gallium does not support unordered access buffers ! D3D11 specifies mapping flags (i.e. read/write/discard);:it's unclear what they are used for here - D3D11 supports odd things in the D3D10_DDI_RESOURCE_MISC_FLAG enum (D3D10_DDI_RESOURCE_MISC_DISCARD_ON_PRESENT, D3D11_DDI_RESOURCE_MISC_BUFFER_ALLOW_RAW_VIEWS, D3D11_DDI_RESOURCE_MISC_BUFFER_STRUCTURED) @@ -275,8 +274,7 @@ DispatchIndirect (D3D11 only) Draw -> draw_arrays ! D3D11 sets primitive modes separately with IaSetTopology: it's not obvious which is better -DrawAuto - - Gallium lacks stream out and DrawAuto +DrawAuto -> draw_auto DrawIndexed -> draw_elements ! D3D11 sets primitive modes separately with IaSetTopology: it's not obvious which is better @@ -468,8 +466,7 @@ SetViewports ShaderResourceViewReadAfterWriteHazard -> flush(PIPE_FLUSH_RENDER_CACHE) - Gallium does not support specifying this per-render-target/view -SoSetTargets - - Gallium does not support stream out +SoSetTargets -> set_stream_output_buffers VsSetConstantBuffers -> for(i = StartBuffer; i < NumBuffers; ++i) set_constant_buffer(PIPE_SHADER_VERTEX, i, phBuffers[i]) * may want to split into fragment/vertex-specific versions diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst index 27d352b7a3..0242dedbf3 100644 --- a/src/gallium/docs/source/context.rst +++ b/src/gallium/docs/source/context.rst @@ -295,6 +295,23 @@ for a driver to batch multiple blits with the same source and destination. +Stream Output +^^^^^^^^^^^^^ + +Stream output, also known as transform feedback allows writing the results of the +vertex pipeline (after the geometry shader or vertex shader if no geometry shader +is present) to be written to a buffer created with a ``PIPE_BIND_STREAM_OUTPUT`` +flag. + +First a stream output state needs to be created with the +``create_stream_output_state`` call. It specific the details of what's being written, +to which buffer and with what kind of a writemask. + +Then target buffers needs to be set with the call to ``set_stream_output_buffers`` +which sets the buffers and the offsets from the start of those buffer to where +the data will be written to. + + Transfers ^^^^^^^^^ diff --git a/src/gallium/drivers/softpipe/sp_prim_vbuf.c b/src/gallium/drivers/softpipe/sp_prim_vbuf.c index db0d175510..06691e8395 100644 --- a/src/gallium/drivers/softpipe/sp_prim_vbuf.c +++ b/src/gallium/drivers/softpipe/sp_prim_vbuf.c @@ -542,6 +542,15 @@ sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr) } } +static void +sp_vbuf_so_info(struct vbuf_render *vbr, uint buffer, uint vertices) +{ + struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr); + struct softpipe_context *softpipe = cvbr->softpipe; + + softpipe->so_target.so_count[buffer] += vertices; +} + static void sp_vbuf_destroy(struct vbuf_render *vbr) @@ -575,6 +584,7 @@ sp_create_vbuf_backend(struct softpipe_context *sp) cvbr->base.draw_elements = sp_vbuf_draw_elements; cvbr->base.draw_arrays = sp_vbuf_draw_arrays; cvbr->base.release_vertices = sp_vbuf_release_vertices; + cvbr->base.set_stream_output_info = sp_vbuf_so_info; cvbr->base.destroy = sp_vbuf_destroy; cvbr->softpipe = sp; diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c index 8abe7f50e1..fc57d3eb61 100644 --- a/src/gallium/drivers/softpipe/sp_screen.c +++ b/src/gallium/drivers/softpipe/sp_screen.c @@ -115,6 +115,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER: case PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER: return 1; + case PIPE_CAP_STREAM_OUTPUT: + return 1; case PIPE_CAP_MAX_VS_INSTRUCTIONS: case PIPE_CAP_MAX_FS_INSTRUCTIONS: diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h index be42c27222..f47db407dc 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -447,6 +447,7 @@ enum pipe_cap { PIPE_CAP_TGSI_CONT_SUPPORTED, PIPE_CAP_BLEND_EQUATION_SEPARATE, PIPE_CAP_SM3, /*< Shader Model, supported */ + PIPE_CAP_STREAM_OUTPUT, PIPE_CAP_MAX_PREDICATE_REGISTERS, /** Maximum texture image units accessible from vertex and fragment shaders * combined */ |