summaryrefslogtreecommitdiffstats
path: root/gfx/qcms/transform-sse2.c
diff options
context:
space:
mode:
Diffstat (limited to 'gfx/qcms/transform-sse2.c')
-rw-r--r--gfx/qcms/transform-sse2.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/gfx/qcms/transform-sse2.c b/gfx/qcms/transform-sse2.c
new file mode 100644
index 000000000..dc9f495e7
--- /dev/null
+++ b/gfx/qcms/transform-sse2.c
@@ -0,0 +1,243 @@
+#include <emmintrin.h>
+
+#include "qcmsint.h"
+
+/* pre-shuffled: just load these into XMM reg instead of load-scalar/shufps sequence */
+#define FLOATSCALE (float)(PRECACHE_OUTPUT_SIZE)
+#define CLAMPMAXVAL ( ((float) (PRECACHE_OUTPUT_SIZE - 1)) / PRECACHE_OUTPUT_SIZE )
+static const ALIGN float floatScaleX4[4] =
+ { FLOATSCALE, FLOATSCALE, FLOATSCALE, FLOATSCALE};
+static const ALIGN float clampMaxValueX4[4] =
+ { CLAMPMAXVAL, CLAMPMAXVAL, CLAMPMAXVAL, CLAMPMAXVAL};
+
+void qcms_transform_data_rgb_out_lut_sse2(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 __m128 mat0 = _mm_load_ps(mat[0]);
+ const __m128 mat1 = _mm_load_ps(mat[1]);
+ const __m128 mat2 = _mm_load_ps(mat[2]);
+
+ /* these values don't change, either */
+ const __m128 max = _mm_load_ps(clampMaxValueX4);
+ const __m128 min = _mm_setzero_ps();
+ const __m128 scale = _mm_load_ps(floatScaleX4);
+
+ /* working variables */
+ __m128 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 = _mm_load_ss(&igtbl_r[src[0]]);
+ vec_g = _mm_load_ss(&igtbl_g[src[1]]);
+ vec_b = _mm_load_ss(&igtbl_b[src[2]]);
+ src += 3;
+
+ /* transform all but final pixel */
+
+ for (i=0; i<length; i++)
+ {
+ /* position values from gamma tables */
+ vec_r = _mm_shuffle_ps(vec_r, vec_r, 0);
+ vec_g = _mm_shuffle_ps(vec_g, vec_g, 0);
+ vec_b = _mm_shuffle_ps(vec_b, vec_b, 0);
+
+ /* gamma * matrix */
+ vec_r = _mm_mul_ps(vec_r, mat0);
+ vec_g = _mm_mul_ps(vec_g, mat1);
+ vec_b = _mm_mul_ps(vec_b, mat2);
+
+ /* crunch, crunch, crunch */
+ vec_r = _mm_add_ps(vec_r, _mm_add_ps(vec_g, vec_b));
+ vec_r = _mm_max_ps(min, vec_r);
+ vec_r = _mm_min_ps(max, vec_r);
+ result = _mm_mul_ps(vec_r, scale);
+
+ /* store calc'd output tables indices */
+ _mm_store_si128((__m128i*)output, _mm_cvtps_epi32(result));
+
+ /* load for next loop while store completes */
+ vec_r = _mm_load_ss(&igtbl_r[src[0]]);
+ vec_g = _mm_load_ss(&igtbl_g[src[1]]);
+ vec_b = _mm_load_ss(&igtbl_b[src[2]]);
+ src += 3;
+
+ /* use calc'd indices to output RGB values */
+ dest[OUTPUT_R_INDEX] = otdata_r[output[0]];
+ dest[OUTPUT_G_INDEX] = otdata_g[output[1]];
+ dest[OUTPUT_B_INDEX] = otdata_b[output[2]];
+ dest += RGB_OUTPUT_COMPONENTS;
+ }
+
+ /* handle final (maybe only) pixel */
+
+ vec_r = _mm_shuffle_ps(vec_r, vec_r, 0);
+ vec_g = _mm_shuffle_ps(vec_g, vec_g, 0);
+ vec_b = _mm_shuffle_ps(vec_b, vec_b, 0);
+
+ vec_r = _mm_mul_ps(vec_r, mat0);
+ vec_g = _mm_mul_ps(vec_g, mat1);
+ vec_b = _mm_mul_ps(vec_b, mat2);
+
+ vec_r = _mm_add_ps(vec_r, _mm_add_ps(vec_g, vec_b));
+ vec_r = _mm_max_ps(min, vec_r);
+ vec_r = _mm_min_ps(max, vec_r);
+ result = _mm_mul_ps(vec_r, scale);
+
+ _mm_store_si128((__m128i*)output, _mm_cvtps_epi32(result));
+
+ dest[OUTPUT_R_INDEX] = otdata_r[output[0]];
+ dest[OUTPUT_G_INDEX] = otdata_g[output[1]];
+ dest[OUTPUT_B_INDEX] = otdata_b[output[2]];
+}
+
+void qcms_transform_data_rgba_out_lut_sse2(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 __m128 mat0 = _mm_load_ps(mat[0]);
+ const __m128 mat1 = _mm_load_ps(mat[1]);
+ const __m128 mat2 = _mm_load_ps(mat[2]);
+
+ /* these values don't change, either */
+ const __m128 max = _mm_load_ps(clampMaxValueX4);
+ const __m128 min = _mm_setzero_ps();
+ const __m128 scale = _mm_load_ps(floatScaleX4);
+
+ /* working variables */
+ __m128 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 = _mm_load_ss(&igtbl_r[src[0]]);
+ vec_g = _mm_load_ss(&igtbl_g[src[1]]);
+ vec_b = _mm_load_ss(&igtbl_b[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 = _mm_shuffle_ps(vec_r, vec_r, 0);
+ vec_g = _mm_shuffle_ps(vec_g, vec_g, 0);
+ vec_b = _mm_shuffle_ps(vec_b, vec_b, 0);
+
+ /* gamma * matrix */
+ vec_r = _mm_mul_ps(vec_r, mat0);
+ vec_g = _mm_mul_ps(vec_g, mat1);
+ vec_b = _mm_mul_ps(vec_b, mat2);
+
+ /* store alpha for this pixel; load alpha for next */
+ dest[OUTPUT_A_INDEX] = alpha;
+ alpha = src[3];
+
+ /* crunch, crunch, crunch */
+ vec_r = _mm_add_ps(vec_r, _mm_add_ps(vec_g, vec_b));
+ vec_r = _mm_max_ps(min, vec_r);
+ vec_r = _mm_min_ps(max, vec_r);
+ result = _mm_mul_ps(vec_r, scale);
+
+ /* store calc'd output tables indices */
+ _mm_store_si128((__m128i*)output, _mm_cvtps_epi32(result));
+
+ /* load gamma values for next loop while store completes */
+ vec_r = _mm_load_ss(&igtbl_r[src[0]]);
+ vec_g = _mm_load_ss(&igtbl_g[src[1]]);
+ vec_b = _mm_load_ss(&igtbl_b[src[2]]);
+ src += 4;
+
+ /* use calc'd indices to output RGB values */
+ dest[OUTPUT_R_INDEX] = otdata_r[output[0]];
+ dest[OUTPUT_G_INDEX] = otdata_g[output[1]];
+ dest[OUTPUT_B_INDEX] = otdata_b[output[2]];
+ dest += RGBA_OUTPUT_COMPONENTS;
+ }
+
+ /* handle final (maybe only) pixel */
+
+ vec_r = _mm_shuffle_ps(vec_r, vec_r, 0);
+ vec_g = _mm_shuffle_ps(vec_g, vec_g, 0);
+ vec_b = _mm_shuffle_ps(vec_b, vec_b, 0);
+
+ vec_r = _mm_mul_ps(vec_r, mat0);
+ vec_g = _mm_mul_ps(vec_g, mat1);
+ vec_b = _mm_mul_ps(vec_b, mat2);
+
+ dest[OUTPUT_A_INDEX] = alpha;
+
+ vec_r = _mm_add_ps(vec_r, _mm_add_ps(vec_g, vec_b));
+ vec_r = _mm_max_ps(min, vec_r);
+ vec_r = _mm_min_ps(max, vec_r);
+ result = _mm_mul_ps(vec_r, scale);
+
+ _mm_store_si128((__m128i*)output, _mm_cvtps_epi32(result));
+
+ dest[OUTPUT_R_INDEX] = otdata_r[output[0]];
+ dest[OUTPUT_G_INDEX] = otdata_g[output[1]];
+ dest[OUTPUT_B_INDEX] = otdata_b[output[2]];
+}
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 11:11:19 +0000