1 files changed, 262 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.c b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.c
new file mode 100644
index 0000000000..da950d5289
--- /dev/null
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.c
@@ -0,0 +1,262 @@
+/*
+ * Copyright 2009 Nicolai Hähnle <nhaehnle@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. */
+
+#include "radeon_compiler.h"
+
+#include <stdarg.h>
+
+#include "radeon_program.h"
+
+
+void rc_init(struct radeon_compiler * c)
+{
+	memset(c, 0, sizeof(*c));
+
+	memory_pool_init(&c->Pool);
+	c->Program.Instructions.Prev = &c->Program.Instructions;
+	c->Program.Instructions.Next = &c->Program.Instructions;
+	c->Program.Instructions.I.Opcode = OPCODE_END;
+}
+
+void rc_destroy(struct radeon_compiler * c)
+{
+	rc_constants_destroy(&c->Program.Constants);
+	memory_pool_destroy(&c->Pool);
+	free(c->ErrorMsg);
+}
+
+void rc_debug(struct radeon_compiler * c, const char * fmt, ...)
+{
+	va_list ap;
+
+	if (!c->Debug)
+		return;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	va_end(ap);
+}
+
+void rc_error(struct radeon_compiler * c, const char * fmt, ...)
+{
+	va_list ap;
+
+	c->Error = GL_TRUE;
+
+	if (!c->ErrorMsg) {
+		/* Only remember the first error */
+		char buf[1024];
+		int written;
+
+		va_start(ap, fmt);
+		written = vsnprintf(buf, sizeof(buf), fmt, ap);
+		va_end(ap);
+
+		if (written < sizeof(buf)) {
+			c->ErrorMsg = strdup(buf);
+		} else {
+			c->ErrorMsg = malloc(written + 1);
+
+			va_start(ap, fmt);
+			vsnprintf(c->ErrorMsg, written + 1, fmt, ap);
+			va_end(ap);
+		}
+	}
+
+	if (c->Debug) {
+		fprintf(stderr, "r300compiler error: ");
+
+		va_start(ap, fmt);
+		vfprintf(stderr, fmt, ap);
+		va_end(ap);
+	}
+}
+
+/**
+ * Rewrite the program such that everything that source the given input
+ * register will source new_input instead.
+ */
+void rc_move_input(struct radeon_compiler * c, unsigned input, struct prog_src_register new_input)
+{
+	struct rc_instruction * inst;
+
+	c->Program.InputsRead &= ~(1 << input);
+
+	for(inst = c->Program.Instructions.Next; inst != &c->Program.Instructions; inst = inst->Next) {
+		const unsigned numsrcs = _mesa_num_inst_src_regs(inst->I.Opcode);
+		unsigned i;
+
+		for(i = 0; i < numsrcs; ++i) {
+			if (inst->I.SrcReg[i].File == PROGRAM_INPUT && inst->I.SrcReg[i].Index == input) {
+				inst->I.SrcReg[i].File = new_input.File;
+				inst->I.SrcReg[i].Index = new_input.Index;
+				inst->I.SrcReg[i].Swizzle = combine_swizzles(new_input.Swizzle, inst->I.SrcReg[i].Swizzle);
+				if (!inst->I.SrcReg[i].Abs) {
+					inst->I.SrcReg[i].Negate ^= new_input.Negate;
+					inst->I.SrcReg[i].Abs = new_input.Abs;
+				}
+
+				c->Program.InputsRead |= 1 << new_input.Index;
+			}
+		}
+	}
+}
+
+
+/**
+ * Rewrite the program such that everything that writes into the given
+ * output register will instead write to new_output. The new_output
+ * writemask is honoured.
+ */
+void rc_move_output(struct radeon_compiler * c, unsigned output, unsigned new_output, unsigned writemask)
+{
+	struct rc_instruction * inst;
+
+	c->Program.OutputsWritten &= ~(1 << output);
+
+	for(inst = c->Program.Instructions.Next; inst != &c->Program.Instructions; inst = inst->Next) {
+		const unsigned numdsts = _mesa_num_inst_dst_regs(inst->I.Opcode);
+
+		if (numdsts) {
+			if (inst->I.DstReg.File == PROGRAM_OUTPUT && inst->I.DstReg.Index == output) {
+				inst->I.DstReg.Index = new_output;
+				inst->I.DstReg.WriteMask &= writemask;
+
+				c->Program.OutputsWritten |= 1 << new_output;
+			}
+		}
+	}
+}
+
+
+/**
+ * Rewrite the program such that a given output is duplicated.
+ */
+void rc_copy_output(struct radeon_compiler * c, unsigned output, unsigned dup_output)
+{
+	unsigned tempreg = rc_find_free_temporary(c);
+	struct rc_instruction * inst;
+
+	for(inst = c->Program.Instructions.Next; inst != &c->Program.Instructions; inst = inst->Next) {
+		const unsigned numdsts = _mesa_num_inst_dst_regs(inst->I.Opcode);
+
+		if (numdsts) {
+			if (inst->I.DstReg.File == PROGRAM_OUTPUT && inst->I.DstReg.Index == output) {
+				inst->I.DstReg.File = PROGRAM_TEMPORARY;
+				inst->I.DstReg.Index = tempreg;
+			}
+		}
+	}
+
+	inst = rc_insert_new_instruction(c, c->Program.Instructions.Prev);
+	inst->I.Opcode = OPCODE_MOV;
+	inst->I.DstReg.File = PROGRAM_OUTPUT;
+	inst->I.DstReg.Index = output;
+
+	inst->I.SrcReg[0].File = PROGRAM_TEMPORARY;
+	inst->I.SrcReg[0].Index = tempreg;
+	inst->I.SrcReg[0].Swizzle = SWIZZLE_XYZW;
+
+	inst = rc_insert_new_instruction(c, c->Program.Instructions.Prev);
+	inst->I.Opcode = OPCODE_MOV;
+	inst->I.DstReg.File = PROGRAM_OUTPUT;
+	inst->I.DstReg.Index = dup_output;
+
+	inst->I.SrcReg[0].File = PROGRAM_TEMPORARY;
+	inst->I.SrcReg[0].Index = tempreg;
+	inst->I.SrcReg[0].Swizzle = SWIZZLE_XYZW;
+
+	c->Program.OutputsWritten |= 1 << dup_output;
+}
+
+
+/**
+ * Introduce standard code fragment to deal with fragment.position.
+ */
+void rc_transform_fragment_wpos(struct radeon_compiler * c, unsigned wpos, unsigned new_input)
+{
+	unsigned tempregi = rc_find_free_temporary(c);
+
+	c->Program.InputsRead &= ~(1 << wpos);
+	c->Program.InputsRead |= 1 << new_input;
+
+	/* perspective divide */
+	struct rc_instruction * inst_rcp = rc_insert_new_instruction(c, &c->Program.Instructions);
+	inst_rcp->I.Opcode = OPCODE_RCP;
+
+	inst_rcp->I.DstReg.File = PROGRAM_TEMPORARY;
+	inst_rcp->I.DstReg.Index = tempregi;
+	inst_rcp->I.DstReg.WriteMask = WRITEMASK_W;
+
+	inst_rcp->I.SrcReg[0].File = PROGRAM_INPUT;
+	inst_rcp->I.SrcReg[0].Index = new_input;
+	inst_rcp->I.SrcReg[0].Swizzle = SWIZZLE_WWWW;
+
+	struct rc_instruction * inst_mul = rc_insert_new_instruction(c, inst_rcp);
+	inst_mul->I.Opcode = OPCODE_MUL;
+
+	inst_mul->I.DstReg.File = PROGRAM_TEMPORARY;
+	inst_mul->I.DstReg.Index = tempregi;
+	inst_mul->I.DstReg.WriteMask = WRITEMASK_XYZ;
+
+	inst_mul->I.SrcReg[0].File = PROGRAM_INPUT;
+	inst_mul->I.SrcReg[0].Index = new_input;
+
+	inst_mul->I.SrcReg[1].File = PROGRAM_TEMPORARY;
+	inst_mul->I.SrcReg[1].Index = tempregi;
+	inst_mul->I.SrcReg[1].Swizzle = SWIZZLE_WWWW;
+
+	/* viewport transformation */
+	struct rc_instruction * inst_mad = rc_insert_new_instruction(c, inst_mul);
+	inst_mad->I.Opcode = OPCODE_MAD;
+
+	inst_mad->I.DstReg.File = PROGRAM_TEMPORARY;
+	inst_mad->I.DstReg.Index = tempregi;
+	inst_mad->I.DstReg.WriteMask = WRITEMASK_XYZ;
+
+	inst_mad->I.SrcReg[0].File = PROGRAM_TEMPORARY;
+	inst_mad->I.SrcReg[0].Index = tempregi;
+	inst_mad->I.SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
+
+	inst_mad->I.SrcReg[1].File = PROGRAM_STATE_VAR;
+	inst_mad->I.SrcReg[1].Index = rc_constants_add_state(&c->Program.Constants, RC_STATE_R300_WINDOW_DIMENSION, 0);
+	inst_mad->I.SrcReg[1].Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
+
+	inst_mad->I.SrcReg[2].File = PROGRAM_STATE_VAR;
+	inst_mad->I.SrcReg[2].Index = inst_mad->I.SrcReg[1].Index;
+	inst_mad->I.SrcReg[2].Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO);
+
+	struct rc_instruction * inst;
+	for (inst = inst_mad->Next; inst != &c->Program.Instructions; inst = inst->Next) {
+		const unsigned numsrcs = _mesa_num_inst_src_regs(inst->I.Opcode);
+		unsigned i;
+
+		for(i = 0; i < numsrcs; i++) {
+			if (inst->I.SrcReg[i].File == PROGRAM_INPUT &&
+			    inst->I.SrcReg[i].Index == wpos) {
+				inst->I.SrcReg[i].File = PROGRAM_TEMPORARY;
+				inst->I.SrcReg[i].Index = tempregi;
+			}
+		}
+	}
+}
+