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-rw-r--r--modules/tinyexr/image_loader_tinyexr.cpp158
1 files changed, 105 insertions, 53 deletions
diff --git a/modules/tinyexr/image_loader_tinyexr.cpp b/modules/tinyexr/image_loader_tinyexr.cpp
index 9e7266b95a..5bdcb84244 100644
--- a/modules/tinyexr/image_loader_tinyexr.cpp
+++ b/modules/tinyexr/image_loader_tinyexr.cpp
@@ -73,8 +73,10 @@ Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_f
}
// Read HALF channel as FLOAT. (GH-13490)
+ bool use_float16 = false;
for (int i = 0; i < exr_header.num_channels; i++) {
if (exr_header.pixel_types[i] == TINYEXR_PIXELTYPE_HALF) {
+ use_float16 = true;
exr_header.requested_pixel_types[i] = TINYEXR_PIXELTYPE_FLOAT;
}
}
@@ -102,33 +104,10 @@ Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_f
idxB = c;
} else if (strcmp(exr_header.channels[c].name, "A") == 0) {
idxA = c;
- }
- }
-
- if (exr_header.num_channels == 1) {
- // Grayscale channel only.
- idxR = 0;
- idxG = 0;
- idxB = 0;
- idxA = 0;
- } else {
- // Assume RGB(A)
- if (idxR == -1) {
- ERR_PRINT("TinyEXR: R channel not found.");
- // @todo { free exr_image }
- return ERR_FILE_CORRUPT;
- }
-
- if (idxG == -1) {
- ERR_PRINT("TinyEXR: G channel not found.");
- // @todo { free exr_image }
- return ERR_FILE_CORRUPT;
- }
-
- if (idxB == -1) {
- ERR_PRINT("TinyEXR: B channel not found.");
- // @todo { free exr_image }
- return ERR_FILE_CORRUPT;
+ } else if (strcmp(exr_header.channels[c].name, "Y") == 0) {
+ idxR = c;
+ idxG = c;
+ idxB = c;
}
}
@@ -138,14 +117,27 @@ Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_f
Image::Format format;
int output_channels = 0;
+ int channel_size = use_float16 ? 2 : 4;
if (idxA != -1) {
- imgdata.resize(exr_image.width * exr_image.height * 8); //RGBA16
- format = Image::FORMAT_RGBAH;
+ imgdata.resize(exr_image.width * exr_image.height * 4 * channel_size); //RGBA
+ format = use_float16 ? Image::FORMAT_RGBAH : Image::FORMAT_RGBAF;
output_channels = 4;
- } else {
- imgdata.resize(exr_image.width * exr_image.height * 6); //RGB16
- format = Image::FORMAT_RGBH;
+ } else if (idxB != -1) {
+ ERR_FAIL_COND_V(idxG == -1, ERR_FILE_CORRUPT);
+ ERR_FAIL_COND_V(idxR == -1, ERR_FILE_CORRUPT);
+ imgdata.resize(exr_image.width * exr_image.height * 3 * channel_size); //RGB
+ format = use_float16 ? Image::FORMAT_RGBH : Image::FORMAT_RGBF;
output_channels = 3;
+ } else if (idxG != -1) {
+ ERR_FAIL_COND_V(idxR == -1, ERR_FILE_CORRUPT);
+ imgdata.resize(exr_image.width * exr_image.height * 2 * channel_size); //RG
+ format = use_float16 ? Image::FORMAT_RGH : Image::FORMAT_RGF;
+ output_channels = 2;
+ } else {
+ ERR_FAIL_COND_V(idxR == -1, ERR_FILE_CORRUPT);
+ imgdata.resize(exr_image.width * exr_image.height * 1 * channel_size); //R
+ format = use_float16 ? Image::FORMAT_RH : Image::FORMAT_RF;
+ output_channels = 1;
}
EXRTile single_image_tile;
@@ -175,9 +167,11 @@ Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_f
exr_tiles = exr_image.tiles;
}
+ //print_line("reading format: " + Image::get_format_name(format));
{
uint8_t *wd = imgdata.ptrw();
- uint16_t *iw = (uint16_t *)wd;
+ uint16_t *iw16 = (uint16_t *)wd;
+ float *iw32 = (float *)wd;
// Assume `out_rgba` have enough memory allocated.
for (int tile_index = 0; tile_index < num_tiles; tile_index++) {
@@ -187,41 +181,99 @@ Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_f
int th = tile.height;
const float *r_channel_start = reinterpret_cast<const float *>(tile.images[idxR]);
- const float *g_channel_start = reinterpret_cast<const float *>(tile.images[idxG]);
- const float *b_channel_start = reinterpret_cast<const float *>(tile.images[idxB]);
+ const float *g_channel_start = nullptr;
+ const float *b_channel_start = nullptr;
const float *a_channel_start = nullptr;
+ if (idxG != -1) {
+ g_channel_start = reinterpret_cast<const float *>(tile.images[idxG]);
+ }
+ if (idxB != -1) {
+ b_channel_start = reinterpret_cast<const float *>(tile.images[idxB]);
+ }
if (idxA != -1) {
a_channel_start = reinterpret_cast<const float *>(tile.images[idxA]);
}
- uint16_t *first_row_w = iw + (tile.offset_y * tile_height * exr_image.width + tile.offset_x * tile_width) * output_channels;
+ uint16_t *first_row_w16 = iw16 + (tile.offset_y * tile_height * exr_image.width + tile.offset_x * tile_width) * output_channels;
+ float *first_row_w32 = iw32 + (tile.offset_y * tile_height * exr_image.width + tile.offset_x * tile_width) * output_channels;
for (int y = 0; y < th; y++) {
const float *r_channel = r_channel_start + y * tile_width;
- const float *g_channel = g_channel_start + y * tile_width;
- const float *b_channel = b_channel_start + y * tile_width;
+ const float *g_channel = nullptr;
+ const float *b_channel = nullptr;
const float *a_channel = nullptr;
-
+ if (g_channel_start) {
+ g_channel = g_channel_start + y * tile_width;
+ }
+ if (b_channel_start) {
+ b_channel = b_channel_start + y * tile_width;
+ }
if (a_channel_start) {
a_channel = a_channel_start + y * tile_width;
}
- uint16_t *row_w = first_row_w + (y * exr_image.width * output_channels);
-
- for (int x = 0; x < tw; x++) {
- Color color(*r_channel++, *g_channel++, *b_channel++);
-
- if (p_force_linear) {
- color = color.to_linear();
+ if (use_float16) {
+ uint16_t *row_w = first_row_w16 + (y * exr_image.width * output_channels);
+
+ for (int x = 0; x < tw; x++) {
+ Color color;
+ color.r = *r_channel++;
+ if (g_channel) {
+ color.g = *g_channel++;
+ }
+ if (b_channel) {
+ color.b = *b_channel++;
+ }
+ if (a_channel) {
+ color.a = *a_channel++;
+ }
+
+ if (p_force_linear) {
+ color = color.to_linear();
+ }
+
+ *row_w++ = Math::make_half_float(color.r);
+ if (g_channel) {
+ *row_w++ = Math::make_half_float(color.g);
+ }
+ if (b_channel) {
+ *row_w++ = Math::make_half_float(color.b);
+ }
+ if (a_channel) {
+ *row_w++ = Math::make_half_float(color.a);
+ }
}
-
- *row_w++ = Math::make_half_float(color.r);
- *row_w++ = Math::make_half_float(color.g);
- *row_w++ = Math::make_half_float(color.b);
-
- if (idxA != -1) {
- *row_w++ = Math::make_half_float(*a_channel++);
+ } else {
+ float *row_w = first_row_w32 + (y * exr_image.width * output_channels);
+
+ for (int x = 0; x < tw; x++) {
+ Color color;
+ color.r = *r_channel++;
+ if (g_channel) {
+ color.g = *g_channel++;
+ }
+ if (b_channel) {
+ color.b = *b_channel++;
+ }
+ if (a_channel) {
+ color.a = *a_channel++;
+ }
+
+ if (p_force_linear) {
+ color = color.to_linear();
+ }
+
+ *row_w++ = color.r;
+ if (g_channel) {
+ *row_w++ = color.g;
+ }
+ if (b_channel) {
+ *row_w++ = color.b;
+ }
+ if (a_channel) {
+ *row_w++ = color.a;
+ }
}
}
}
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