[Mesa-dev] [PATCH 13/22] i965/gs: Implement support for geometry shader surfaces.
Paul Berry
stereotype441 at gmail.com
Mon Aug 26 15:12:44 PDT 2013
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,
+ },
+ .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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