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path: root/src/mesa/drivers/dri/i915tex/i915_program.c
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Diffstat (limited to 'src/mesa/drivers/dri/i915tex/i915_program.c')
-rw-r--r--src/mesa/drivers/dri/i915tex/i915_program.c518
1 files changed, 518 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915tex/i915_program.c b/src/mesa/drivers/dri/i915tex/i915_program.c
new file mode 100644
index 0000000000..4fb56222c6
--- /dev/null
+++ b/src/mesa/drivers/dri/i915tex/i915_program.c
@@ -0,0 +1,518 @@
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * 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, 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 TUNGSTEN GRAPHICS AND/OR ITS 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 <strings.h>
+
+#include "glheader.h"
+#include "macros.h"
+#include "enums.h"
+
+#include "tnl/t_context.h"
+#include "intel_batchbuffer.h"
+
+#include "i915_reg.h"
+#include "i915_context.h"
+#include "i915_program.h"
+
+
+#define A0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
+#define D0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
+#define T0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
+#define A0_SRC0( reg ) (((reg)&UREG_MASK)>>UREG_A0_SRC0_SHIFT_LEFT)
+#define A1_SRC0( reg ) (((reg)&UREG_MASK)<<UREG_A1_SRC0_SHIFT_RIGHT)
+#define A1_SRC1( reg ) (((reg)&UREG_MASK)>>UREG_A1_SRC1_SHIFT_LEFT)
+#define A2_SRC1( reg ) (((reg)&UREG_MASK)<<UREG_A2_SRC1_SHIFT_RIGHT)
+#define A2_SRC2( reg ) (((reg)&UREG_MASK)>>UREG_A2_SRC2_SHIFT_LEFT)
+
+/* These are special, and don't have swizzle/negate bits.
+ */
+#define T0_SAMPLER( reg ) (GET_UREG_NR(reg)<<T0_SAMPLER_NR_SHIFT)
+#define T1_ADDRESS_REG( reg ) ((GET_UREG_NR(reg)<<T1_ADDRESS_REG_NR_SHIFT) | \
+ (GET_UREG_TYPE(reg)<<T1_ADDRESS_REG_TYPE_SHIFT))
+
+
+/* Macros for translating UREG's into the various register fields used
+ * by the I915 programmable unit.
+ */
+#define UREG_A0_DEST_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_DEST_TYPE_SHIFT)
+#define UREG_A0_SRC0_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_SRC0_TYPE_SHIFT)
+#define UREG_A1_SRC0_SHIFT_RIGHT (A1_SRC0_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
+#define UREG_A1_SRC1_SHIFT_LEFT (UREG_TYPE_SHIFT - A1_SRC1_TYPE_SHIFT)
+#define UREG_A2_SRC1_SHIFT_RIGHT (A2_SRC1_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
+#define UREG_A2_SRC2_SHIFT_LEFT (UREG_TYPE_SHIFT - A2_SRC2_TYPE_SHIFT)
+
+#define UREG_MASK 0xffffff00
+#define UREG_TYPE_NR_MASK ((REG_TYPE_MASK << UREG_TYPE_SHIFT) | \
+ (REG_NR_MASK << UREG_NR_SHIFT))
+
+
+#define I915_CONSTFLAG_PARAM 0x1f
+
+GLuint
+i915_get_temp(struct i915_fragment_program *p)
+{
+ int bit = ffs(~p->temp_flag);
+ if (!bit) {
+ fprintf(stderr, "%s: out of temporaries\n", __FILE__);
+ exit(1);
+ }
+
+ p->temp_flag |= 1 << (bit - 1);
+ return UREG(REG_TYPE_R, (bit - 1));
+}
+
+
+GLuint
+i915_get_utemp(struct i915_fragment_program * p)
+{
+ int bit = ffs(~p->utemp_flag);
+ if (!bit) {
+ fprintf(stderr, "%s: out of temporaries\n", __FILE__);
+ exit(1);
+ }
+
+ p->utemp_flag |= 1 << (bit - 1);
+ return UREG(REG_TYPE_U, (bit - 1));
+}
+
+void
+i915_release_utemps(struct i915_fragment_program *p)
+{
+ p->utemp_flag = ~0x7;
+}
+
+
+GLuint
+i915_emit_decl(struct i915_fragment_program *p,
+ GLuint type, GLuint nr, GLuint d0_flags)
+{
+ GLuint reg = UREG(type, nr);
+
+ if (type == REG_TYPE_T) {
+ if (p->decl_t & (1 << nr))
+ return reg;
+
+ p->decl_t |= (1 << nr);
+ }
+ else if (type == REG_TYPE_S) {
+ if (p->decl_s & (1 << nr))
+ return reg;
+
+ p->decl_s |= (1 << nr);
+ }
+ else
+ return reg;
+
+ *(p->decl++) = (D0_DCL | D0_DEST(reg) | d0_flags);
+ *(p->decl++) = D1_MBZ;
+ *(p->decl++) = D2_MBZ;
+
+ p->nr_decl_insn++;
+ return reg;
+}
+
+GLuint
+i915_emit_arith(struct i915_fragment_program * p,
+ GLuint op,
+ GLuint dest,
+ GLuint mask,
+ GLuint saturate, GLuint src0, GLuint src1, GLuint src2)
+{
+ GLuint c[3];
+ GLuint nr_const = 0;
+
+ assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST);
+ dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest));
+ assert(dest);
+
+ if (GET_UREG_TYPE(src0) == REG_TYPE_CONST)
+ c[nr_const++] = 0;
+ if (GET_UREG_TYPE(src1) == REG_TYPE_CONST)
+ c[nr_const++] = 1;
+ if (GET_UREG_TYPE(src2) == REG_TYPE_CONST)
+ c[nr_const++] = 2;
+
+ /* Recursively call this function to MOV additional const values
+ * into temporary registers. Use utemp registers for this -
+ * currently shouldn't be possible to run out, but keep an eye on
+ * this.
+ */
+ if (nr_const > 1) {
+ GLuint s[3], first, i, old_utemp_flag;
+
+ s[0] = src0;
+ s[1] = src1;
+ s[2] = src2;
+ old_utemp_flag = p->utemp_flag;
+
+ first = GET_UREG_NR(s[c[0]]);
+ for (i = 1; i < nr_const; i++) {
+ if (GET_UREG_NR(s[c[i]]) != first) {
+ GLuint tmp = i915_get_utemp(p);
+
+ i915_emit_arith(p, A0_MOV, tmp, A0_DEST_CHANNEL_ALL, 0,
+ s[c[i]], 0, 0);
+ s[c[i]] = tmp;
+ }
+ }
+
+ src0 = s[0];
+ src1 = s[1];
+ src2 = s[2];
+ p->utemp_flag = old_utemp_flag; /* restore */
+ }
+
+ *(p->csr++) = (op | A0_DEST(dest) | mask | saturate | A0_SRC0(src0));
+ *(p->csr++) = (A1_SRC0(src0) | A1_SRC1(src1));
+ *(p->csr++) = (A2_SRC1(src1) | A2_SRC2(src2));
+
+ p->nr_alu_insn++;
+ return dest;
+}
+
+GLuint i915_emit_texld( struct i915_fragment_program *p,
+ GLuint dest,
+ GLuint destmask,
+ GLuint sampler,
+ GLuint coord,
+ GLuint op )
+{
+ if (coord != UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord))) {
+ /* No real way to work around this in the general case - need to
+ * allocate and declare a new temporary register (a utemp won't
+ * do). Will fallback for now.
+ */
+ i915_program_error(p, "Can't (yet) swizzle TEX arguments");
+ return 0;
+ }
+
+ /* Don't worry about saturate as we only support
+ */
+ if (destmask != A0_DEST_CHANNEL_ALL) {
+ GLuint tmp = i915_get_utemp(p);
+ i915_emit_texld( p, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, op );
+ i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 );
+ return dest;
+ }
+ else {
+ assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST);
+ assert(dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest)));
+
+ if (GET_UREG_TYPE(coord) != REG_TYPE_T) {
+ p->nr_tex_indirect++;
+ }
+
+ *(p->csr++) = (op |
+ T0_DEST( dest ) |
+ T0_SAMPLER( sampler ));
+
+ *(p->csr++) = T1_ADDRESS_REG( coord );
+ *(p->csr++) = T2_MBZ;
+
+ p->nr_tex_insn++;
+ return dest;
+ }
+}
+
+
+GLuint
+i915_emit_const1f(struct i915_fragment_program * p, GLfloat c0)
+{
+ GLint reg, idx;
+
+ if (c0 == 0.0)
+ return swizzle(UREG(REG_TYPE_R, 0), ZERO, ZERO, ZERO, ZERO);
+ if (c0 == 1.0)
+ return swizzle(UREG(REG_TYPE_R, 0), ONE, ONE, ONE, ONE);
+
+ for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
+ if (p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
+ continue;
+ for (idx = 0; idx < 4; idx++) {
+ if (!(p->constant_flags[reg] & (1 << idx)) ||
+ p->constant[reg][idx] == c0) {
+ p->constant[reg][idx] = c0;
+ p->constant_flags[reg] |= 1 << idx;
+ if (reg + 1 > p->nr_constants)
+ p->nr_constants = reg + 1;
+ return swizzle(UREG(REG_TYPE_CONST, reg), idx, ZERO, ZERO, ONE);
+ }
+ }
+ }
+
+ fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
+ p->error = 1;
+ return 0;
+}
+
+GLuint
+i915_emit_const2f(struct i915_fragment_program * p, GLfloat c0, GLfloat c1)
+{
+ GLint reg, idx;
+
+ if (c0 == 0.0)
+ return swizzle(i915_emit_const1f(p, c1), ZERO, X, Z, W);
+ if (c0 == 1.0)
+ return swizzle(i915_emit_const1f(p, c1), ONE, X, Z, W);
+
+ if (c1 == 0.0)
+ return swizzle(i915_emit_const1f(p, c0), X, ZERO, Z, W);
+ if (c1 == 1.0)
+ return swizzle(i915_emit_const1f(p, c0), X, ONE, Z, W);
+
+ for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
+ if (p->constant_flags[reg] == 0xf ||
+ p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
+ continue;
+ for (idx = 0; idx < 3; idx++) {
+ if (!(p->constant_flags[reg] & (3 << idx))) {
+ p->constant[reg][idx] = c0;
+ p->constant[reg][idx + 1] = c1;
+ p->constant_flags[reg] |= 3 << idx;
+ if (reg + 1 > p->nr_constants)
+ p->nr_constants = reg + 1;
+ return swizzle(UREG(REG_TYPE_CONST, reg), idx, idx + 1, ZERO,
+ ONE);
+ }
+ }
+ }
+
+ fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
+ p->error = 1;
+ return 0;
+}
+
+
+
+GLuint
+i915_emit_const4f(struct i915_fragment_program * p,
+ GLfloat c0, GLfloat c1, GLfloat c2, GLfloat c3)
+{
+ GLint reg;
+
+ for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
+ if (p->constant_flags[reg] == 0xf &&
+ p->constant[reg][0] == c0 &&
+ p->constant[reg][1] == c1 &&
+ p->constant[reg][2] == c2 && p->constant[reg][3] == c3) {
+ return UREG(REG_TYPE_CONST, reg);
+ }
+ else if (p->constant_flags[reg] == 0) {
+ p->constant[reg][0] = c0;
+ p->constant[reg][1] = c1;
+ p->constant[reg][2] = c2;
+ p->constant[reg][3] = c3;
+ p->constant_flags[reg] = 0xf;
+ if (reg + 1 > p->nr_constants)
+ p->nr_constants = reg + 1;
+ return UREG(REG_TYPE_CONST, reg);
+ }
+ }
+
+ fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
+ p->error = 1;
+ return 0;
+}
+
+
+GLuint
+i915_emit_const4fv(struct i915_fragment_program * p, const GLfloat * c)
+{
+ return i915_emit_const4f(p, c[0], c[1], c[2], c[3]);
+}
+
+
+GLuint
+i915_emit_param4fv(struct i915_fragment_program * p, const GLfloat * values)
+{
+ GLint reg, i;
+
+ for (i = 0; i < p->nr_params; i++) {
+ if (p->param[i].values == values)
+ return UREG(REG_TYPE_CONST, p->param[i].reg);
+ }
+
+
+ for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
+ if (p->constant_flags[reg] == 0) {
+ p->constant_flags[reg] = I915_CONSTFLAG_PARAM;
+ i = p->nr_params++;
+
+ p->param[i].values = values;
+ p->param[i].reg = reg;
+ p->params_uptodate = 0;
+
+ if (reg + 1 > p->nr_constants)
+ p->nr_constants = reg + 1;
+ return UREG(REG_TYPE_CONST, reg);
+ }
+ }
+
+ fprintf(stderr, "%s: out of constants\n", __FUNCTION__);
+ p->error = 1;
+ return 0;
+}
+
+
+
+
+void
+i915_program_error(struct i915_fragment_program *p, const char *msg)
+{
+ /* XXX we shouldn't print anything to stdout, record GL error or
+ * call _mesa_problem()
+ */
+ fprintf(stderr, "%s\n", msg);
+ p->error = 1;
+}
+
+void
+i915_init_program(struct i915_context *i915, struct i915_fragment_program *p)
+{
+ GLcontext *ctx = &i915->intel.ctx;
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+
+ p->translated = 0;
+ p->params_uptodate = 0;
+ p->on_hardware = 0;
+ p->error = 0;
+
+ p->nr_tex_indirect = 1; /* correct? */
+ p->nr_tex_insn = 0;
+ p->nr_alu_insn = 0;
+ p->nr_decl_insn = 0;
+
+ p->ctx = ctx;
+ memset(p->constant_flags, 0, sizeof(p->constant_flags));
+
+ p->nr_constants = 0;
+ p->csr = p->program;
+ p->decl = p->declarations;
+ p->decl_s = 0;
+ p->decl_t = 0;
+ p->temp_flag = 0xffff000;
+ p->utemp_flag = ~0x7;
+ p->wpos_tex = -1;
+ p->depth_written = 0;
+ p->nr_params = 0;
+
+ p->src_texture = UREG_BAD;
+ p->src_previous = UREG(REG_TYPE_T, T_DIFFUSE);
+ p->last_tex_stage = 0;
+ p->VB = &tnl->vb;
+
+ *(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM;
+}
+
+
+void
+i915_fini_program(struct i915_fragment_program *p)
+{
+ GLuint program_size = p->csr - p->program;
+ GLuint decl_size = p->decl - p->declarations;
+
+ if (p->nr_tex_indirect > I915_MAX_TEX_INDIRECT)
+ i915_program_error(p, "Exceeded max nr indirect texture lookups");
+
+ if (p->nr_tex_insn > I915_MAX_TEX_INSN)
+ i915_program_error(p, "Exceeded max TEX instructions");
+
+ if (p->nr_alu_insn > I915_MAX_ALU_INSN)
+ i915_program_error(p, "Exceeded max ALU instructions");
+
+ if (p->nr_decl_insn > I915_MAX_DECL_INSN)
+ i915_program_error(p, "Exceeded max DECL instructions");
+
+ if (p->error) {
+ p->FragProg.Base.NumNativeInstructions = 0;
+ p->FragProg.NumNativeAluInstructions = 0;
+ p->FragProg.NumNativeTexInstructions = 0;
+ p->FragProg.NumNativeTexIndirections = 0;
+ }
+ else {
+ p->FragProg.Base.NumNativeInstructions = (p->nr_alu_insn +
+ p->nr_tex_insn +
+ p->nr_decl_insn);
+ p->FragProg.NumNativeAluInstructions = p->nr_alu_insn;
+ p->FragProg.NumNativeTexInstructions = p->nr_tex_insn;
+ p->FragProg.NumNativeTexIndirections = p->nr_tex_indirect;
+ }
+
+ p->declarations[0] |= program_size + decl_size - 2;
+}
+
+void
+i915_upload_program(struct i915_context *i915,
+ struct i915_fragment_program *p)
+{
+ GLuint program_size = p->csr - p->program;
+ GLuint decl_size = p->decl - p->declarations;
+
+ FALLBACK(&i915->intel, I915_FALLBACK_PROGRAM, p->error);
+
+ /* Could just go straight to the batchbuffer from here:
+ */
+ if (i915->state.ProgramSize != (program_size + decl_size) ||
+ memcmp(i915->state.Program + decl_size, p->program,
+ program_size * sizeof(int)) != 0) {
+ I915_STATECHANGE(i915, I915_UPLOAD_PROGRAM);
+ memcpy(i915->state.Program, p->declarations, decl_size * sizeof(int));
+ memcpy(i915->state.Program + decl_size, p->program,
+ program_size * sizeof(int));
+ i915->state.ProgramSize = decl_size + program_size;
+ }
+
+ /* Always seemed to get a failure if I used memcmp() to
+ * shortcircuit this state upload. Needs further investigation?
+ */
+ if (p->nr_constants) {
+ GLuint nr = p->nr_constants;
+
+ I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 1);
+ I915_STATECHANGE(i915, I915_UPLOAD_CONSTANTS);
+
+ i915->state.Constant[0] = _3DSTATE_PIXEL_SHADER_CONSTANTS | ((nr) * 4);
+ i915->state.Constant[1] = (1 << (nr - 1)) | ((1 << (nr - 1)) - 1);
+
+ memcpy(&i915->state.Constant[2], p->constant, 4 * sizeof(int) * (nr));
+ i915->state.ConstantSize = 2 + (nr) * 4;
+
+ if (0) {
+ GLuint i;
+ for (i = 0; i < nr; i++) {
+ fprintf(stderr, "const[%d]: %f %f %f %f\n", i,
+ p->constant[i][0],
+ p->constant[i][1], p->constant[i][2], p->constant[i][3]);
+ }
+ }
+ }
+ else {
+ I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 0);
+ }
+
+ p->on_hardware = 1;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 08:17:02 +0000