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-rw-r--r--gfx/qcms/transform-altivec.c269
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diff --git a/gfx/qcms/transform-altivec.c b/gfx/qcms/transform-altivec.c
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+/* vim: set ts=8 sw=8 noexpandtab: */
+// qcms
+// Copyright (C) 2009 Mozilla Corporation
+// Copyright (C) 1998-2007 Marti Maria
+//
+// 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 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 <altivec.h>
+
+#include "qcmsint.h"
+
+#define FLOATSCALE (float)(PRECACHE_OUTPUT_SIZE)
+#define CLAMPMAXVAL (((float) (PRECACHE_OUTPUT_SIZE - 1)) / PRECACHE_OUTPUT_SIZE)
+static const ALIGN float floatScaleX4 = FLOATSCALE;
+static const ALIGN float clampMaxValueX4 = CLAMPMAXVAL;
+
+inline vector float load_aligned_float(float *dataPtr)
+{
+ vector float data = vec_lde(0, dataPtr);
+ vector unsigned char moveToStart = vec_lvsl(0, dataPtr);
+ return vec_perm(data, data, moveToStart);
+}
+
+void qcms_transform_data_rgb_out_lut_altivec(qcms_transform *transform,
+ unsigned char *src,
+ unsigned char *dest,
+ size_t length)
+{
+ unsigned int i;
+ float (*mat)[4] = transform->matrix;
+ char input_back[32];
+ /* Ensure we have a buffer that's 16 byte aligned regardless of the original
+ * stack alignment. We can't use __attribute__((aligned(16))) or __declspec(align(32))
+ * because they don't work on stack variables. gcc 4.4 does do the right thing
+ * on x86 but that's too new for us right now. For more info: gcc bug #16660 */
+ float const *input = (float*)(((uintptr_t)&input_back[16]) & ~0xf);
+ /* share input and output locations to save having to keep the
+ * locations in separate registers */
+ uint32_t const *output = (uint32_t*)input;
+
+ /* deref *transform now to avoid it in loop */
+ const float *igtbl_r = transform->input_gamma_table_r;
+ const float *igtbl_g = transform->input_gamma_table_g;
+ const float *igtbl_b = transform->input_gamma_table_b;
+
+ /* deref *transform now to avoid it in loop */
+ const uint8_t *otdata_r = &transform->output_table_r->data[0];
+ const uint8_t *otdata_g = &transform->output_table_g->data[0];
+ const uint8_t *otdata_b = &transform->output_table_b->data[0];
+
+ /* input matrix values never change */
+ const vector float mat0 = vec_ldl(0, (vector float*)mat[0]);
+ const vector float mat1 = vec_ldl(0, (vector float*)mat[1]);
+ const vector float mat2 = vec_ldl(0, (vector float*)mat[2]);
+
+ /* these values don't change, either */
+ const vector float max = vec_splat(vec_lde(0, (float*)&clampMaxValueX4), 0);
+ const vector float min = (vector float)vec_splat_u32(0);
+ const vector float scale = vec_splat(vec_lde(0, (float*)&floatScaleX4), 0);
+
+ /* working variables */
+ vector float vec_r, vec_g, vec_b, result;
+
+ /* CYA */
+ if (!length)
+ return;
+
+ /* one pixel is handled outside of the loop */
+ length--;
+
+ /* setup for transforming 1st pixel */
+ vec_r = load_aligned_float((float*)&igtbl_r[src[0]]);
+ vec_g = load_aligned_float((float*)&igtbl_r[src[1]]);
+ vec_b = load_aligned_float((float*)&igtbl_r[src[2]]);
+ src += 3;
+
+ /* transform all but final pixel */
+
+ for (i=0; i<length; i++)
+ {
+ /* position values from gamma tables */
+ vec_r = vec_splat(vec_r, 0);
+ vec_g = vec_splat(vec_g, 0);
+ vec_b = vec_splat(vec_b, 0);
+
+ /* gamma * matrix */
+ vec_r = vec_madd(vec_r, mat0, min);
+ vec_g = vec_madd(vec_g, mat1, min);
+ vec_b = vec_madd(vec_b, mat2, min);
+
+ /* crunch, crunch, crunch */
+ vec_r = vec_add(vec_r, vec_add(vec_g, vec_b));
+ vec_r = vec_max(min, vec_r);
+ vec_r = vec_min(max, vec_r);
+ result = vec_madd(vec_r, scale, min);
+
+ /* store calc'd output tables indices */
+ vec_st(vec_ctu(vec_round(result), 0), 0, (vector unsigned int*)output);
+
+ /* load for next loop while store completes */
+ vec_r = load_aligned_float((float*)&igtbl_r[src[0]]);
+ vec_g = load_aligned_float((float*)&igtbl_r[src[1]]);
+ vec_b = load_aligned_float((float*)&igtbl_r[src[2]]);
+ src += 3;
+
+ /* use calc'd indices to output RGB values */
+ dest[0] = otdata_r[output[0]];
+ dest[1] = otdata_g[output[1]];
+ dest[2] = otdata_b[output[2]];
+ dest += 3;
+ }
+
+ /* handle final (maybe only) pixel */
+
+ vec_r = vec_splat(vec_r, 0);
+ vec_g = vec_splat(vec_g, 0);
+ vec_b = vec_splat(vec_b, 0);
+
+ vec_r = vec_madd(vec_r, mat0, min);
+ vec_g = vec_madd(vec_g, mat1, min);
+ vec_b = vec_madd(vec_b, mat2, min);
+
+ vec_r = vec_add(vec_r, vec_add(vec_g, vec_b));
+ vec_r = vec_max(min, vec_r);
+ vec_r = vec_min(max, vec_r);
+ result = vec_madd(vec_r, scale, min);
+
+ vec_st(vec_ctu(vec_round(result),0),0,(vector unsigned int*)output);
+
+ dest[0] = otdata_r[output[0]];
+ dest[1] = otdata_g[output[1]];
+ dest[2] = otdata_b[output[2]];
+}
+
+void qcms_transform_data_rgba_out_lut_altivec(qcms_transform *transform,
+ unsigned char *src,
+ unsigned char *dest,
+ size_t length)
+{
+ unsigned int i;
+ float (*mat)[4] = transform->matrix;
+ char input_back[32];
+ /* Ensure we have a buffer that's 16 byte aligned regardless of the original
+ * stack alignment. We can't use __attribute__((aligned(16))) or __declspec(align(32))
+ * because they don't work on stack variables. gcc 4.4 does do the right thing
+ * on x86 but that's too new for us right now. For more info: gcc bug #16660 */
+ float const *input = (float*)(((uintptr_t)&input_back[16]) & ~0xf);
+ /* share input and output locations to save having to keep the
+ * locations in separate registers */
+ uint32_t const *output = (uint32_t*)input;
+
+ /* deref *transform now to avoid it in loop */
+ const float *igtbl_r = transform->input_gamma_table_r;
+ const float *igtbl_g = transform->input_gamma_table_g;
+ const float *igtbl_b = transform->input_gamma_table_b;
+
+ /* deref *transform now to avoid it in loop */
+ const uint8_t *otdata_r = &transform->output_table_r->data[0];
+ const uint8_t *otdata_g = &transform->output_table_g->data[0];
+ const uint8_t *otdata_b = &transform->output_table_b->data[0];
+
+ /* input matrix values never change */
+ const vector float mat0 = vec_ldl(0, (vector float*)mat[0]);
+ const vector float mat1 = vec_ldl(0, (vector float*)mat[1]);
+ const vector float mat2 = vec_ldl(0, (vector float*)mat[2]);
+
+ /* these values don't change, either */
+ const vector float max = vec_splat(vec_lde(0, (float*)&clampMaxValueX4), 0);
+ const vector float min = (vector float)vec_splat_u32(0);
+ const vector float scale = vec_splat(vec_lde(0, (float*)&floatScaleX4), 0);
+
+ /* working variables */
+ vector float vec_r, vec_g, vec_b, result;
+ unsigned char alpha;
+
+ /* CYA */
+ if (!length)
+ return;
+
+ /* one pixel is handled outside of the loop */
+ length--;
+
+ /* setup for transforming 1st pixel */
+ vec_r = load_aligned_float((float*)&igtbl_r[src[0]]);
+ vec_g = load_aligned_float((float*)&igtbl_r[src[1]]);
+ vec_b = load_aligned_float((float*)&igtbl_r[src[2]]);
+ alpha = src[3];
+ src += 4;
+
+ /* transform all but final pixel */
+
+ for (i=0; i<length; i++)
+ {
+ /* position values from gamma tables */
+ vec_r = vec_splat(vec_r, 0);
+ vec_g = vec_splat(vec_g, 0);
+ vec_b = vec_splat(vec_b, 0);
+
+ /* gamma * matrix */
+ vec_r = vec_madd(vec_r, mat0, min);
+ vec_g = vec_madd(vec_g, mat1, min);
+ vec_b = vec_madd(vec_b, mat2, min);
+
+ /* store alpha for this pixel; load alpha for next */
+ dest[3] = alpha;
+ alpha = src[3];
+
+ /* crunch, crunch, crunch */
+ vec_r = vec_add(vec_r, vec_add(vec_g, vec_b));
+ vec_r = vec_max(min, vec_r);
+ vec_r = vec_min(max, vec_r);
+ result = vec_madd(vec_r, scale, min);
+
+ /* store calc'd output tables indices */
+ vec_st(vec_ctu(vec_round(result), 0), 0, (vector unsigned int*)output);
+
+ /* load gamma values for next loop while store completes */
+ vec_r = load_aligned_float((float*)&igtbl_r[src[0]]);
+ vec_g = load_aligned_float((float*)&igtbl_r[src[1]]);
+ vec_b = load_aligned_float((float*)&igtbl_r[src[2]]);
+ src += 4;
+
+ /* use calc'd indices to output RGB values */
+ dest[0] = otdata_r[output[0]];
+ dest[1] = otdata_g[output[1]];
+ dest[2] = otdata_b[output[2]];
+ dest += 4;
+ }
+
+ /* handle final (maybe only) pixel */
+
+ vec_r = vec_splat(vec_r, 0);
+ vec_g = vec_splat(vec_g, 0);
+ vec_b = vec_splat(vec_b, 0);
+
+ vec_r = vec_madd(vec_r, mat0, min);
+ vec_g = vec_madd(vec_g, mat1, min);
+ vec_b = vec_madd(vec_b, mat2, min);
+
+ dest[3] = alpha;
+
+ vec_r = vec_add(vec_r, vec_add(vec_g, vec_b));
+ vec_r = vec_max(min, vec_r);
+ vec_r = vec_min(max, vec_r);
+ result = vec_madd(vec_r, scale, min);
+
+ vec_st(vec_ctu(vec_round(result), 0), 0, (vector unsigned int*)output);
+
+ dest[0] = otdata_r[output[0]];
+ dest[1] = otdata_g[output[1]];
+ dest[2] = otdata_b[output[2]];
+}
+