[Mesa-dev] [PATCH 13/22] i965/gs: Implement support for geometry shader surfaces.
Paul Berry
stereotype441 at gmail.com
Wed Aug 28 10:33:33 PDT 2013
On 26 August 2013 15:12, Paul Berry <stereotype441 at gmail.com> wrote:
> This patch implements pull constant upload, binding table upload, and
> surface setup for geometry shaders, by re-using vertex shader code
> that was generalized in previous patches.
>
> Based on work by Eric Anholt <eric at anholt.net>.
> ---
> src/mesa/drivers/dri/i965/Makefile.sources | 1 +
> src/mesa/drivers/dri/i965/brw_context.h | 2 +
> src/mesa/drivers/dri/i965/brw_gs_surface_state.c | 123
> +++++++++++++++++++++++
> src/mesa/drivers/dri/i965/brw_state.h | 3 +
> src/mesa/drivers/dri/i965/brw_state_upload.c | 3 +
> 5 files changed, 132 insertions(+)
> create mode 100644 src/mesa/drivers/dri/i965/brw_gs_surface_state.c
>
> diff --git a/src/mesa/drivers/dri/i965/Makefile.sources
> b/src/mesa/drivers/dri/i965/Makefile.sources
> index 290cd93..81a16ff 100644
> --- a/src/mesa/drivers/dri/i965/Makefile.sources
> +++ b/src/mesa/drivers/dri/i965/Makefile.sources
> @@ -63,6 +63,7 @@ i965_FILES = \
> brw_gs.c \
> brw_gs_emit.c \
> brw_gs_state.c \
> + brw_gs_surface_state.c \
> brw_interpolation_map.c \
> brw_lower_texture_gradients.cpp \
> brw_misc_state.c \
> diff --git a/src/mesa/drivers/dri/i965/brw_context.h
> b/src/mesa/drivers/dri/i965/brw_context.h
> index 35193a6..622b5c8 100644
> --- a/src/mesa/drivers/dri/i965/brw_context.h
> +++ b/src/mesa/drivers/dri/i965/brw_context.h
> @@ -148,6 +148,7 @@ enum brw_state_id {
> BRW_STATE_BATCH,
> BRW_STATE_INDEX_BUFFER,
> BRW_STATE_VS_CONSTBUF,
> + BRW_STATE_GS_CONSTBUF,
> BRW_STATE_PROGRAM_CACHE,
> BRW_STATE_STATE_BASE_ADDRESS,
> BRW_STATE_VUE_MAP_VS,
> @@ -185,6 +186,7 @@ enum brw_state_id {
> /** \see brw.state.depth_region */
> #define BRW_NEW_INDEX_BUFFER (1 << BRW_STATE_INDEX_BUFFER)
> #define BRW_NEW_VS_CONSTBUF (1 << BRW_STATE_VS_CONSTBUF)
> +#define BRW_NEW_GS_CONSTBUF (1 << BRW_STATE_GS_CONSTBUF)
> #define BRW_NEW_PROGRAM_CACHE (1 << BRW_STATE_PROGRAM_CACHE)
> #define BRW_NEW_STATE_BASE_ADDRESS (1 << BRW_STATE_STATE_BASE_ADDRESS)
> #define BRW_NEW_VUE_MAP_VS (1 << BRW_STATE_VUE_MAP_VS)
> diff --git a/src/mesa/drivers/dri/i965/brw_gs_surface_state.c
> b/src/mesa/drivers/dri/i965/brw_gs_surface_state.c
> new file mode 100644
> index 0000000..d3d48ff
> --- /dev/null
> +++ b/src/mesa/drivers/dri/i965/brw_gs_surface_state.c
> @@ -0,0 +1,123 @@
> +/*
> + * Copyright © 2013 Intel Corporation
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the
> "Software"),
> + * to deal in the Software without restriction, including without
> limitation
> + * the rights to use, copy, modify, merge, publish, distribute,
> sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the
> next
> + * paragraph) shall be included in all copies or substantial portions of
> the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
> SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> DEALINGS
> + * IN THE SOFTWARE.
> + */
> +
> +#include "main/mtypes.h"
> +#include "program/prog_parameter.h"
> +
> +#include "brw_context.h"
> +#include "brw_state.h"
> +
> +
> +/* Creates a new GS constant buffer reflecting the current GS program's
> + * constants, if needed by the GS program.
> + *
> + * Otherwise, constants go through the CURBEs using the
> brw_constant_buffer
> + * state atom.
> + */
> +static void
> +brw_upload_gs_pull_constants(struct brw_context *brw)
> +{
> + struct brw_vec4_context_base *vec4_ctx = &brw->gs.base;
> +
> + /* BRW_NEW_GEOMETRY_PROGRAM */
> + struct brw_geometry_program *gp =
> + (struct brw_geometry_program *) brw->geometry_program;
> +
> + if (!gp)
> + return;
> +
> + /* CACHE_NEW_GS_PROG */
> + const struct brw_vec4_prog_data *prog_data = &brw->gs.prog_data->base;
> +
> + /* _NEW_PROGRAM_CONSTANTS */
> + brw_upload_vec4_pull_constants(brw, BRW_NEW_GS_CONSTBUF,
> &gp->program.Base,
> + vec4_ctx, prog_data);
> +}
> +
> +const struct brw_tracked_state brw_gs_pull_constants = {
> + .dirty = {
> + .mesa = (_NEW_PROGRAM_CONSTANTS),
> + .brw = (BRW_NEW_BATCH | BRW_NEW_GEOMETRY_PROGRAM),
> + .cache = CACHE_NEW_GS_PROG,
> + },
> + .emit = brw_upload_gs_pull_constants,
> +};
> +
> +static void
> +brw_upload_gs_ubo_surfaces(struct brw_context *brw)
> +{
> + struct gl_context *ctx = &brw->ctx;
> + struct brw_vec4_context_base *vec4_ctx = &brw->gs.base;
> +
> + /* _NEW_PROGRAM */
> + struct gl_shader_program *prog = ctx->Shader.CurrentGeometryProgram;
> +
> + if (!prog)
> + return;
> +
> + brw_upload_ubo_surfaces(brw,
> prog->_LinkedShaders[MESA_SHADER_GEOMETRY],
> + &vec4_ctx->surf_offset[SURF_INDEX_VEC4_UBO(0)]);
> +}
> +
> +const struct brw_tracked_state brw_gs_ubo_surfaces = {
> + .dirty = {
> + .mesa = (_NEW_PROGRAM |
> + _NEW_BUFFER_OBJECT),
> + .brw = BRW_NEW_BATCH,
> + .cache = 0,
>
Whoops, I neglected to account for commit 77d8fbc (mesa: add & use a new
driver flag for UBO updates instead of _NEW_BUFFER_OBJECT). This should be:
.dirty = {
.mesa = _NEW_PROGRAM,
.brw = BRW_NEW_BATCH | BRW_NEW_UNIFORM_BUFFER,
.cache = 0,
},
I've fixed it in my "gs" branch.
> + },
> + .emit = brw_upload_gs_ubo_surfaces,
> +};
> +
> +
> +/**
> + * Constructs the binding table for the WM surface state, which maps unit
> + * numbers to surface state objects.
> + */
> +static void
> +brw_gs_upload_binding_table(struct brw_context *brw)
> +{
> + struct brw_vec4_context_base *vec4_ctx = &brw->gs.base;
> +
> + /* If there's no GS, skip changing anything. */
> + if (!brw->gs.prog_data)
> + return;
> +
> + /* CACHE_NEW_GS_PROG */
> + const struct brw_vec4_prog_data *prog_data = &brw->gs.prog_data->base;
> +
> + /* BRW_NEW_SURFACES and BRW_NEW_GS_CONSTBUF */
> + brw_vec4_upload_binding_table(brw, BRW_NEW_GS_BINDING_TABLE, vec4_ctx,
> + prog_data);
> +}
> +
> +const struct brw_tracked_state brw_gs_binding_table = {
> + .dirty = {
> + .mesa = 0,
> + .brw = (BRW_NEW_BATCH |
> + BRW_NEW_GS_CONSTBUF |
> + BRW_NEW_SURFACES),
> + .cache = CACHE_NEW_GS_PROG
> + },
> + .emit = brw_gs_upload_binding_table,
> +};
> diff --git a/src/mesa/drivers/dri/i965/brw_state.h
> b/src/mesa/drivers/dri/i965/brw_state.h
> index 3a2f54f..72ac84c 100644
> --- a/src/mesa/drivers/dri/i965/brw_state.h
> +++ b/src/mesa/drivers/dri/i965/brw_state.h
> @@ -47,6 +47,7 @@ extern const struct brw_tracked_state brw_cc_unit;
> extern const struct brw_tracked_state brw_clip_prog;
> extern const struct brw_tracked_state brw_clip_unit;
> extern const struct brw_tracked_state brw_vs_pull_constants;
> +extern const struct brw_tracked_state brw_gs_pull_constants;
> extern const struct brw_tracked_state brw_wm_pull_constants;
> extern const struct brw_tracked_state brw_constant_buffer;
> extern const struct brw_tracked_state brw_curbe_offsets;
> @@ -69,11 +70,13 @@ extern const struct brw_tracked_state brw_urb_fence;
> extern const struct brw_tracked_state brw_vs_prog;
> extern const struct brw_tracked_state brw_vs_samplers;
> extern const struct brw_tracked_state brw_vs_ubo_surfaces;
> +extern const struct brw_tracked_state brw_gs_ubo_surfaces;
> extern const struct brw_tracked_state brw_vs_unit;
> extern const struct brw_tracked_state brw_wm_prog;
> extern const struct brw_tracked_state brw_renderbuffer_surfaces;
> extern const struct brw_tracked_state brw_texture_surfaces;
> extern const struct brw_tracked_state brw_wm_binding_table;
> +extern const struct brw_tracked_state brw_gs_binding_table;
> extern const struct brw_tracked_state brw_vs_binding_table;
> extern const struct brw_tracked_state brw_wm_ubo_surfaces;
> extern const struct brw_tracked_state brw_wm_unit;
> diff --git a/src/mesa/drivers/dri/i965/brw_state_upload.c
> b/src/mesa/drivers/dri/i965/brw_state_upload.c
> index 9638c69..0d77c9e 100644
> --- a/src/mesa/drivers/dri/i965/brw_state_upload.c
> +++ b/src/mesa/drivers/dri/i965/brw_state_upload.c
> @@ -202,11 +202,14 @@ static const struct brw_tracked_state *gen7_atoms[] =
> */
> &brw_vs_pull_constants,
> &brw_vs_ubo_surfaces,
> + &brw_gs_pull_constants,
> + &brw_gs_ubo_surfaces,
> &brw_wm_pull_constants,
> &brw_wm_ubo_surfaces,
> &gen6_renderbuffer_surfaces,
> &brw_texture_surfaces,
> &brw_vs_binding_table,
> + &brw_gs_binding_table,
> &brw_wm_binding_table,
>
> &brw_fs_samplers,
> --
> 1.8.4
>
>
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