diff options
| -rw-r--r-- | src/gallium/auxiliary/util/u_blitter.c | 87 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_blitter.h | 11 |
2 files changed, 96 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c index c0c477b6a18..3c501814ed6 100644 --- a/src/gallium/auxiliary/util/u_blitter.c +++ b/src/gallium/auxiliary/util/u_blitter.c @@ -63,6 +63,7 @@ struct blitter_context_priv /* Constant state objects. */ /* Vertex shaders. */ void *vs; /**< Vertex shader which passes {pos, generic} to the output.*/ + void *vs_pos_only; /**< Vertex shader which passes pos to the output.*/ /* Fragment shaders. */ /* The shader at index i outputs color to color buffers 0,1,...,i-1. */ @@ -87,15 +88,18 @@ struct blitter_context_priv void *dsa_keep_depth_stencil; void *dsa_keep_depth_write_stencil; + /* Vertex elements states. */ void *velem_state; void *velem_uint_state; void *velem_sint_state; + void *velem_state_readbuf; /* Sampler state. */ void *sampler_state; /* Rasterizer state. */ void *rs_state; + void *rs_discard_state; /* Viewport state. */ struct pipe_viewport_state viewport; @@ -210,7 +214,12 @@ struct blitter_context *util_blitter_create(struct pipe_context *pipe) rs_state.flatshade = 1; ctx->rs_state = pipe->create_rasterizer_state(pipe, &rs_state); - /* vertex elements state */ + if (ctx->has_stream_out) { + rs_state.rasterizer_discard = 1; + ctx->rs_discard_state = pipe->create_rasterizer_state(pipe, &rs_state); + } + + /* vertex elements states */ memset(&velem[0], 0, sizeof(velem[0]) * 2); for (i = 0; i < 2; i++) { velem[i].src_offset = i * 4 * sizeof(float); @@ -234,9 +243,14 @@ struct blitter_context *util_blitter_create(struct pipe_context *pipe) ctx->velem_uint_state = pipe->create_vertex_elements_state(pipe, 2, &velem[0]); } + if (ctx->has_stream_out) { + velem[0].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT; + ctx->velem_state_readbuf = pipe->create_vertex_elements_state(pipe, 1, &velem[0]); + } + /* fragment shaders are created on-demand */ - /* vertex shader */ + /* vertex shaders */ { const uint semantic_names[] = { TGSI_SEMANTIC_POSITION, TGSI_SEMANTIC_GENERIC }; @@ -245,6 +259,20 @@ struct blitter_context *util_blitter_create(struct pipe_context *pipe) util_make_vertex_passthrough_shader(pipe, 2, semantic_names, semantic_indices); } + if (ctx->has_stream_out) { + struct pipe_stream_output_info so; + const uint semantic_names[] = { TGSI_SEMANTIC_POSITION }; + const uint semantic_indices[] = { 0 }; + + memset(&so, 0, sizeof(so)); + so.num_outputs = 1; + so.output[0].register_mask = TGSI_WRITEMASK_XYZW; + so.stride = 4; + + ctx->vs_pos_only = + util_make_vertex_passthrough_shader_with_so(pipe, 1, semantic_names, + semantic_indices, &so); + } /* set invariant vertex coordinates */ for (i = 0; i < 4; i++) @@ -274,12 +302,18 @@ void util_blitter_destroy(struct blitter_context *blitter) pipe->delete_depth_stencil_alpha_state(pipe, ctx->dsa_keep_depth_write_stencil); pipe->delete_rasterizer_state(pipe, ctx->rs_state); + if (ctx->rs_discard_state) + pipe->delete_rasterizer_state(pipe, ctx->rs_discard_state); pipe->delete_vs_state(pipe, ctx->vs); + if (ctx->vs_pos_only) + pipe->delete_vs_state(pipe, ctx->vs_pos_only); pipe->delete_vertex_elements_state(pipe, ctx->velem_state); if (ctx->vertex_has_integers) { pipe->delete_vertex_elements_state(pipe, ctx->velem_sint_state); pipe->delete_vertex_elements_state(pipe, ctx->velem_uint_state); } + if (ctx->velem_state_readbuf) + pipe->delete_vertex_elements_state(pipe, ctx->velem_state_readbuf); for (i = 0; i < PIPE_MAX_TEXTURE_TYPES; i++) { if (ctx->fs_texfetch_col[i]) @@ -1178,3 +1212,52 @@ void util_blitter_custom_depth_stencil(struct blitter_context *blitter, blitter_restore_fb_state(ctx); blitter_unset_running_flag(ctx); } + +void util_blitter_copy_buffer(struct blitter_context *blitter, + struct pipe_resource *dst, + unsigned dstx, + struct pipe_resource *src, + unsigned srcx, + unsigned size) +{ + struct blitter_context_priv *ctx = (struct blitter_context_priv*)blitter; + struct pipe_context *pipe = ctx->base.pipe; + struct pipe_vertex_buffer vb; + struct pipe_stream_output_target *so_target; + + /* Drivers not capable of Stream Out should not call this function + * in the first place. */ + assert(ctx->has_stream_out); + + /* Some alignment is required. */ + if (srcx % 4 != 0 || dstx % 4 != 0 || size % 16 != 0 || + !ctx->has_stream_out) { + struct pipe_box box; + u_box_1d(srcx, size, &box); + util_resource_copy_region(pipe, dst, 0, dstx, 0, 0, src, 0, &box); + return; + } + + blitter_set_running_flag(ctx); + blitter_check_saved_vertex_states(ctx); + + vb.buffer = src; + vb.buffer_offset = srcx; + vb.stride = 4; + + pipe->set_vertex_buffers(pipe, 1, &vb); + pipe->bind_vertex_elements_state(pipe, ctx->velem_state_readbuf); + pipe->bind_vs_state(pipe, ctx->vs_pos_only); + if (ctx->has_geometry_shader) + pipe->bind_gs_state(pipe, NULL); + pipe->bind_rasterizer_state(pipe, ctx->rs_discard_state); + + so_target = pipe->create_stream_output_target(pipe, dst, dstx, size); + pipe->set_stream_output_targets(pipe, 1, &so_target, 0); + + util_draw_arrays(pipe, PIPE_PRIM_POINTS, 0, size / 16); + + blitter_restore_vertex_states(ctx); + blitter_unset_running_flag(ctx); + pipe_so_target_reference(&so_target, NULL); +} diff --git a/src/gallium/auxiliary/util/u_blitter.h b/src/gallium/auxiliary/util/u_blitter.h index d02cfafc17f..f605a7e7a2a 100644 --- a/src/gallium/auxiliary/util/u_blitter.h +++ b/src/gallium/auxiliary/util/u_blitter.h @@ -218,6 +218,17 @@ void util_blitter_copy_texture_view(struct blitter_context *blitter, unsigned src_width0, unsigned src_height0); /** + * Copy data from one buffer to another using the Stream Output functionality. + * Some alignment is required, otherwise software fallback is used. + */ +void util_blitter_copy_buffer(struct blitter_context *blitter, + struct pipe_resource *dst, + unsigned dstx, + struct pipe_resource *src, + unsigned srcx, + unsigned size); + +/** * Clear a region of a (color) surface to a constant value. * * These states must be saved in the blitter in addition to the state objects |