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authorMarek Olšák <maraeo@gmail.com>2010-06-13 00:31:04 +0200
committerMarek Olšák <maraeo@gmail.com>2010-06-13 17:43:38 +0200
commita062156bb27d604abb19b4ad6a3668c42b1334ab (patch)
tree3fbe00aa905a4294157f18f883240088f2d91d9e /src
parent7ca24dfa6daead4722d03d9a947f1e049b9c7d38 (diff)
r300g: add API for building command buffers
The idea is to build a hardware command buffer for every CSO and memcpy the buffer to a command stream at bind time (or dirty-state-emission time, to be precise).
Diffstat (limited to 'src')
-rw-r--r--src/gallium/drivers/r300/r300_cb.h133
-rw-r--r--src/gallium/drivers/r300/r300_cs.h12
2 files changed, 145 insertions, 0 deletions
diff --git a/src/gallium/drivers/r300/r300_cb.h b/src/gallium/drivers/r300/r300_cb.h
new file mode 100644
index 0000000000..934526323c
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_cb.h
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
+ * Copyright 2010 Marek Olšák <maraeo@gmail.com>
+ *
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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. */
+
+/**
+ * This file contains macros for building command buffers in memory.
+ *
+ * Use NEW_CB for buffers with a varying size and it will also allocate
+ * the buffer.
+ * Use BEGIN_CB for arrays with a static size.
+ *
+ * Example:
+ *
+ * uint32_t cb[3];
+ * CB_LOCALS;
+ *
+ * BEGIN_CB(cb, 3);
+ * OUT_CB_REG_SEQ(R500_RB3D_CONSTANT_COLOR_AR, 2);
+ * OUT_CB(blend_color_red_alpha);
+ * OUT_CB(blend_color_green_blue);
+ * END_CB;
+ *
+ * And later:
+ *
+ * CS_LOCALS;
+ * WRITE_CS_TABLE(cb, 3);
+ *
+ * Or using a little slower variant:
+ *
+ * CS_LOCALS;
+ * BEGIN_CS(cb, 3);
+ * OUT_CS_TABLE(cb, 3);
+ * END_CS;
+ */
+
+#ifndef R300_CB_H
+#define R300_CB_H
+
+#include "r300_reg.h"
+
+/* Yes, I know macros are ugly. However, they are much prettier than the code
+ * that they neatly hide away, and don't have the cost of function setup, so
+ * we're going to use them. */
+
+
+/**
+ * Command buffer setup.
+ */
+
+#define CB_LOCALS \
+ int cs_count = 0; \
+ uint32_t *cs_ptr = NULL; \
+ (void) cs_count; (void) cs_ptr;
+
+#define NEW_CB(ptr, size) do { \
+ assert(sizeof(*ptr) == sizeof(uint32_t)); \
+ cs_ptr = (ptr) = (uint32_t*)malloc((size) * sizeof(uint32_t)); \
+ cs_count = size; \
+} while (0)
+
+#define BEGIN_CB(ptr, size) do { \
+ assert(sizeof(*ptr) == sizeof(uint32_t)); \
+ cs_ptr = ptr; \
+ cs_count = size; \
+} while (0)
+
+#define END_CB do { \
+ if (cs_count != 0) \
+ debug_printf("r300: Warning: cs_count off by %d at (%s, %s:%i)\n", \
+ cs_count, __FUNCTION__, __FILE__, __LINE__); \
+} while (0)
+
+
+/**
+ * Storing pure DWORDs.
+ */
+
+#define OUT_CB(value) do { \
+ *cs_ptr = (value); \
+ cs_ptr++; \
+ cs_count--; \
+} while (0)
+
+#define OUT_CB_TABLE(values, count) do { \
+ memcpy(cs_ptr, values, count * sizeof(uint32_t)); \
+ cs_ptr += count; \
+ cs_count -= count; \
+} while (0)
+
+#define OUT_CB_32F(value) \
+ OUT_CB(fui(value));
+
+#define OUT_CB_REG(register, value) do { \
+ assert(register); \
+ OUT_CB(CP_PACKET0(register, 0)); \
+ OUT_CB(value); \
+} while (0)
+
+/* Note: This expects count to be the number of registers,
+ * not the actual packet0 count! */
+#define OUT_CB_REG_SEQ(register, count) do { \
+ assert(register); \
+ OUT_CB(CP_PACKET0(register, (count) - 1)); \
+} while (0)
+
+#define OUT_CB_ONE_REG(register, count) do { \
+ assert(register); \
+ OUT_CB(CP_PACKET0(register, (count) - 1) | RADEON_ONE_REG_WR); \
+} while (0)
+
+#define OUT_CB_PKT3(op, count) \
+ OUT_CB(CP_PACKET3(op, count))
+
+#endif /* R300_CB_H */
diff --git a/src/gallium/drivers/r300/r300_cs.h b/src/gallium/drivers/r300/r300_cs.h
index 1cdd4b82ca..1649766989 100644
--- a/src/gallium/drivers/r300/r300_cs.h
+++ b/src/gallium/drivers/r300/r300_cs.h
@@ -56,6 +56,7 @@
if (cs_count != 0) \
debug_printf("r300: Warning: cs_count off by %d\n", cs_count); \
cs_winsys->end_cs(cs_winsys, __FILE__, __FUNCTION__, __LINE__); \
+ cs_count = 0; \
} while (0)
@@ -137,4 +138,15 @@
cs_count -= 4; \
} while (0)
+
+/**
+ * Command buffer emission.
+ */
+
+/* It's recommended not to call begin_cs/end_cs before/after this macro. */
+#define WRITE_CS_TABLE(values, count) do { \
+ assert(cs_count == 0); \
+ cs_winsys->write_cs_table(cs_winsys, values, count); \
+} while (0)
+
#endif /* R300_CS_H */