For newer hardware we disable the VBO module's software handling
of primitive restart. We now handle primitive restarts in
brw_handle_primitive_restart.
The initial version of brw_handle_primitive_restart simply calls
vbo_sw_primitive_restart, and therefore still uses the VBO
module software primitive restart support.
Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com>
Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>
---
docs/GL3.txt | 2 +-
src/mesa/drivers/dri/i965/Makefile.sources | 1 +
src/mesa/drivers/dri/i965/brw_context.c | 2 +
src/mesa/drivers/dri/i965/brw_context.h | 5 ++
src/mesa/drivers/dri/i965/brw_draw.c | 6 ++
src/mesa/drivers/dri/i965/brw_draw.h | 7 ++
src/mesa/drivers/dri/i965/brw_primitive_restart.c | 87 +++++++++++++++++++++
src/mesa/drivers/dri/intel/intel_extensions.c | 4 +
8 files changed, 113 insertions(+), 1 deletion(-)
create mode 100644 src/mesa/drivers/dri/i965/brw_primitive_restart.c
mode change 100644 => 100755 src/mesa/drivers/dri/intel/intel_extensions.c
diff --git a/docs/GL3.txt b/docs/GL3.txt
index 5fc6c69..5651d6e 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -46,7 +46,7 @@ GLSL 1.40
missing: UBOS, inverse(),
highp change
Instanced drawing (GL_ARB_draw_instanced) DONE (i965, gallium,
swrast)
Buffer copying (GL_ARB_copy_buffer) DONE (i965, r300, r600,
swrast)
-Primitive restart (GL_NV_primitive_restart) DONE (r600)
+Primitive restart (GL_NV_primitive_restart) DONE (i965, r600)
16 vertex texture image units DONE
Texture buffer objs (GL_ARB_texture_buffer_object) needs GL3.1 enabling
(i965)
Rectangular textures (GL_ARB_texture_rectangle) DONE (i965, r300, r600,
swrast)
diff --git a/src/mesa/drivers/dri/i965/Makefile.sources
b/src/mesa/drivers/dri/i965/Makefile.sources
index 3847f91..f09c296 100644
--- a/src/mesa/drivers/dri/i965/Makefile.sources
+++ b/src/mesa/drivers/dri/i965/Makefile.sources
@@ -55,6 +55,7 @@ i965_C_FILES = \
brw_misc_state.c \
brw_optimize.c \
brw_program.c \
+ brw_primitive_restart.c \
brw_queryobj.c \
brw_sf.c \
brw_sf_emit.c \
diff --git a/src/mesa/drivers/dri/i965/brw_context.c
b/src/mesa/drivers/dri/i965/brw_context.c
index 65de260..3ef5a57 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -295,6 +295,8 @@ brwCreateContext(int api,
brw->has_negative_rhw_bug = true;
}
+ brw->prim_restart.in_progress = false;
+
brw_init_state( brw );
brw->curbe.last_buf = calloc(1, 4096);
diff --git a/src/mesa/drivers/dri/i965/brw_context.h
b/src/mesa/drivers/dri/i965/brw_context.h
index a768416..920fdaa 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1001,6 +1001,11 @@ struct brw_context
uint32_t render_target_format[MESA_FORMAT_COUNT];
bool format_supported_as_render_target[MESA_FORMAT_COUNT];
+
+ /* PrimitiveRestart */
+ struct {
+ bool in_progress;
+ } prim_restart;
};
diff --git a/src/mesa/drivers/dri/i965/brw_draw.c
b/src/mesa/drivers/dri/i965/brw_draw.c
index 813f7c8..16ce994 100644
--- a/src/mesa/drivers/dri/i965/brw_draw.c
+++ b/src/mesa/drivers/dri/i965/brw_draw.c
@@ -545,6 +545,12 @@ void brw_draw_prims( struct gl_context *ctx,
if (!_mesa_check_conditional_render(ctx))
return;
+ /* Handle primitive restart if needed */
+ if (brw_handle_primitive_restart(ctx, prim, nr_prims, ib)) {
+ /* The draw was handled, so we can exit now */
+ return;
+ }
+
if (!vbo_all_varyings_in_vbos(arrays)) {
if (!index_bounds_valid)
vbo_get_minmax_indices(ctx, prim, ib, &min_index, &max_index,
nr_prims);
diff --git a/src/mesa/drivers/dri/i965/brw_draw.h
b/src/mesa/drivers/dri/i965/brw_draw.h
index 2cc4cb3..d86a9e7 100644
--- a/src/mesa/drivers/dri/i965/brw_draw.h
+++ b/src/mesa/drivers/dri/i965/brw_draw.h
@@ -51,4 +51,11 @@ void brw_draw_destroy( struct brw_context *brw );
void brw_init_current_values(struct gl_context *ctx,
struct gl_client_array *arrays);
+/* brw_primitive_restart.c */
+GLboolean
+brw_handle_primitive_restart(struct gl_context *ctx,
+ const struct _mesa_prim *prim,
+ GLuint nr_prims,
+ const struct _mesa_index_buffer *ib);
+
#endif
diff --git a/src/mesa/drivers/dri/i965/brw_primitive_restart.c
b/src/mesa/drivers/dri/i965/brw_primitive_restart.c
new file mode 100644
index 0000000..d7136ed
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_primitive_restart.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright © 2012 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.
+ *
+ * Authors:
+ * Jordan Justen <jordan.l.jus...@intel.com>
+ *
+ */
+
+#include "main/imports.h"
+#include "main/bufferobj.h"
+
+#include "brw_context.h"
+#include "brw_draw.h"
+
+/**
+ * Check if primitive restart is enabled, and if so, handle it properly.
+ *
+ * In some cases the support will be handled in software. When available
+ * hardware will handle primitive restart.
+ */
+GLboolean
+brw_handle_primitive_restart(struct gl_context *ctx,
+ const struct _mesa_prim *prim,
+ GLuint nr_prims,
+ const struct _mesa_index_buffer *ib)
+{
+ struct brw_context *brw = brw_context(ctx);
+
+ /* We only need to handle cases where there is an index buffer. */
+ if (ib == NULL) {
+ return GL_FALSE;
+ }
+
+ /* If the driver has requested software handling of primitive restarts,
+ * then the VBO module has already taken care of things, and we can
+ * just draw as normal.
+ */
+ if (ctx->Const.PrimitiveRestartInSoftware) {
+ return GL_FALSE;
+ }
+
+ /* If we have set the in_progress flag, then we are in the middle
+ * of handling the primitive restart draw.
+ */
+ if (brw->prim_restart.in_progress) {
+ return GL_FALSE;
+ }
+
+ /* If PrimitiveRestart is not enabled, then we aren't concerned about
+ * handling this draw.
+ */
+ if (!(ctx->Array.PrimitiveRestart)) {
+ return GL_FALSE;
+ }
+
+ /* Signal that we are in the process of handling the
+ * primitive restart draw
+ */
+ brw->prim_restart.in_progress = true;
+
+ vbo_sw_primitive_restart(ctx, prim, nr_prims, ib);
+
+ brw->prim_restart.in_progress = false;
+
+ /* The primitive restart draw was completed, so return true. */
+ return GL_TRUE;
+}
+
diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c
b/src/mesa/drivers/dri/intel/intel_extensions.c
old mode 100644
new mode 100755
index d4713c9..1710c6d
--- a/src/mesa/drivers/dri/intel/intel_extensions.c
+++ b/src/mesa/drivers/dri/intel/intel_extensions.c
@@ -167,4 +167,8 @@ intelInitExtensions(struct gl_context *ctx)
else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
ctx->Extensions.EXT_texture_compression_s3tc = true;
}
+
+ if (intel->gen >= 4) {
+ ctx->Extensions.NV_primitive_restart = true;
+ }
}
--
1.7.9.5
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