#include "u_memory.h"
#include "u_rect.h"
#include "u_format.h"
+#include "u_format_s3tc.h"
+
+#include "pipe/p_defines.h"
+
+
+boolean
+util_format_is_float(enum pipe_format format)
+{
+ const struct util_format_description *desc = util_format_description(format);
+ unsigned i;
+
+ assert(desc);
+ if (!desc) {
+ return FALSE;
+ }
+
+ /* Find the first non-void channel. */
+ for (i = 0; i < 4; i++) {
+ if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
+ break;
+ }
+ }
+
+ if (i == 4) {
+ return FALSE;
+ }
+
+ return desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT ? TRUE : FALSE;
+}
+
+
+boolean
+util_format_is_supported(enum pipe_format format, unsigned bind)
+{
+ if (util_format_is_s3tc(format) && !util_format_s3tc_enabled) {
+ return FALSE;
+ }
+
+#ifndef TEXTURE_FLOAT_ENABLED
+ if ((bind & PIPE_BIND_RENDER_TARGET) &&
+ format != PIPE_FORMAT_R9G9B9E5_FLOAT &&
+ format != PIPE_FORMAT_R11G11B10_FLOAT &&
+ util_format_is_float(format)) {
+ return FALSE;
+ }
+#endif
+
+ return TRUE;
+}
void
}
-static INLINE boolean
+boolean
+util_is_format_compatible(const struct util_format_description *src_desc,
+ const struct util_format_description *dst_desc)
+{
+ unsigned chan;
+
+ if (src_desc->format == dst_desc->format) {
+ return TRUE;
+ }
+
+ if (src_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN ||
+ dst_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN) {
+ return FALSE;
+ }
+
+ if (src_desc->block.bits != dst_desc->block.bits ||
+ src_desc->nr_channels != dst_desc->nr_channels ||
+ src_desc->colorspace != dst_desc->colorspace) {
+ return FALSE;
+ }
+
+ for (chan = 0; chan < 4; ++chan) {
+ if (src_desc->channel[chan].size !=
+ dst_desc->channel[chan].size) {
+ return FALSE;
+ }
+ }
+
+ for (chan = 0; chan < 4; ++chan) {
+ enum util_format_swizzle swizzle = dst_desc->swizzle[chan];
+
+ if (swizzle < 4) {
+ if (src_desc->swizzle[chan] != swizzle) {
+ return FALSE;
+ }
+ if ((src_desc->channel[swizzle].type !=
+ dst_desc->channel[swizzle].type) ||
+ (src_desc->channel[swizzle].normalized !=
+ dst_desc->channel[swizzle].normalized)) {
+ return FALSE;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+
+boolean
util_format_fits_8unorm(const struct util_format_description *format_desc)
{
unsigned chan;
+ /*
+ * After linearized sRGB values require more than 8bits.
+ */
+
+ if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) {
+ return FALSE;
+ }
+
switch (format_desc->layout) {
case UTIL_FORMAT_LAYOUT_S3TC:
const struct util_format_description *src_format_desc;
uint8_t *dst_row;
const uint8_t *src_row;
- unsigned y_step;
+ unsigned x_step, y_step;
unsigned dst_step;
unsigned src_step;
- if (dst_format == src_format) {
+ dst_format_desc = util_format_description(dst_format);
+ src_format_desc = util_format_description(src_format);
+
+ if (util_is_format_compatible(src_format_desc, dst_format_desc)) {
/*
* Trivial case.
*/
return;
}
- dst_format_desc = util_format_description(dst_format);
- src_format_desc = util_format_description(src_format);
-
assert(dst_x % dst_format_desc->block.width == 0);
assert(dst_y % dst_format_desc->block.height == 0);
assert(src_x % src_format_desc->block.width == 0);
*/
y_step = MAX2(dst_format_desc->block.height, src_format_desc->block.height);
+ x_step = MAX2(dst_format_desc->block.width, src_format_desc->block.width);
assert(y_step % dst_format_desc->block.height == 0);
assert(y_step % src_format_desc->block.height == 0);
unsigned tmp_stride;
uint8_t *tmp_row;
- tmp_stride = width * 4 * sizeof *tmp_row;
+ tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
tmp_row = MALLOC(y_step * tmp_stride);
if (!tmp_row)
return;
unsigned tmp_stride;
float *tmp_row;
- tmp_stride = width * 4 * sizeof *tmp_row;
+ tmp_stride = MAX2(width, x_step) * 4 * sizeof *tmp_row;
tmp_row = MALLOC(y_step * tmp_stride);
if (!tmp_row)
return;
FREE(tmp_row);
}
}
+
+void util_format_compose_swizzles(const unsigned char swz1[4],
+ const unsigned char swz2[4],
+ unsigned char dst[4])
+{
+ unsigned i;
+
+ for (i = 0; i < 4; i++) {
+ dst[i] = swz2[i] <= UTIL_FORMAT_SWIZZLE_W ?
+ swz1[swz2[i]] : swz2[i];
+ }
+}
+
+void util_format_swizzle_4f(float *dst, const float *src,
+ const unsigned char swz[4])
+{
+ unsigned i;
+
+ for (i = 0; i < 4; i++) {
+ if (swz[i] < UTIL_FORMAT_SWIZZLE_W)
+ dst[i] = src[swz[i]];
+ else if (swz[i] == UTIL_FORMAT_SWIZZLE_0)
+ dst[i] = 0;
+ else if (swz[i] == UTIL_FORMAT_SWIZZLE_1)
+ dst[i] = 1;
+ }
+}
+
+void util_format_unswizzle_4f(float *dst, const float *src,
+ const unsigned char swz[4])
+{
+ unsigned i;
+
+ for (i = 0; i < 4; i++) {
+ switch (swz[i]) {
+ case UTIL_FORMAT_SWIZZLE_X:
+ dst[0] = src[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_Y:
+ dst[1] = src[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_Z:
+ dst[2] = src[i];
+ break;
+ case UTIL_FORMAT_SWIZZLE_W:
+ dst[3] = src[i];
+ break;
+ }
+ }
+}