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Review mipmaps generation issue

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When changing image format, mipmaps are lost and regenerated from
scratch
This commit is contained in:
Ray 2018-01-23 13:23:34 +01:00
parent 04af83ff99
commit 2dcaddc81c
2 changed files with 20 additions and 21 deletions
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6
src/rlgl.c
View File

@ -1433,6 +1433,8 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi
int mipHeight = height;
int mipOffset = 0; // Mipmap data offset
TraceLog(LOG_DEBUG, "Load texture from data memory address: 0x%x", data);
// Load the different mipmap levels
for (int i = 0; i < mipmapCount; i++)
{
@ -1441,7 +1443,7 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi
int glInternalFormat, glFormat, glType;
GetGlFormats(format, &glInternalFormat, &glFormat, &glType);
TraceLog(LOG_INFO, "Mip level %i (%i x %i), size: %i, formats: %i - %i", i, mipWidth, mipHeight, mipSize, glInternalFormat, glFormat);
TraceLog(LOG_DEBUG, "Load mipmap level %i (%i x %i), size: %i, offset: %i", i, mipWidth, mipHeight, mipSize, mipOffset);
if (glInternalFormat != -1)
{
@ -1511,7 +1513,7 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi
// Unbind current texture
glBindTexture(GL_TEXTURE_2D, 0);
if (id > 0) TraceLog(LOG_INFO, "[TEX ID %i] Texture created successfully (%ix%i)", id, width, height);
if (id > 0) TraceLog(LOG_INFO, "[TEX ID %i] Texture created successfully (%ix%i - %i mipmaps)", id, width, height, mipmapCount);
else TraceLog(LOG_WARNING, "Texture could not be created");
return id;

35
src/textures.c
View File

@ -377,8 +377,6 @@ Texture2D LoadTextureFromImage(Image image)
texture.mipmaps = image.mipmaps;
texture.format = image.format;
TraceLog(LOG_INFO, "[TEX ID %i] Parameters: %ix%i, %i mips, format %i", texture.id, texture.width, texture.height, texture.mipmaps, texture.format);
return texture;
}
@ -678,7 +676,7 @@ void ImageFormat(Image *image, int newFormat)
{
Color *pixels = GetImageData(*image);
free(image->data);
free(image->data); // WARNING! We loose mipmaps data --> Regenerated at the end...
image->format = newFormat;
@ -700,11 +698,10 @@ void ImageFormat(Image *image, int newFormat)
{
image->data = (unsigned char *)malloc(image->width*image->height*2*sizeof(unsigned char));
for (int i = 0; i < image->width*image->height*2; i += 2)
for (int i = 0; i < image->width*image->height*2; i += 2, k++)
{
((unsigned char *)image->data)[i] = (unsigned char)((float)pixels[k].r*0.299f + (float)pixels[k].g*0.587f + (float)pixels[k].b*0.114f);
((unsigned char *)image->data)[i + 1] = pixels[k].a;
k++;
}
} break;
@ -730,12 +727,11 @@ void ImageFormat(Image *image, int newFormat)
{
image->data = (unsigned char *)malloc(image->width*image->height*3*sizeof(unsigned char));
for (int i = 0; i < image->width*image->height*3; i += 3)
for (int i = 0; i < image->width*image->height*3; i += 3, k++)
{
((unsigned char *)image->data)[i] = pixels[k].r;
((unsigned char *)image->data)[i + 1] = pixels[k].g;
((unsigned char *)image->data)[i + 2] = pixels[k].b;
k++;
}
} break;
case UNCOMPRESSED_R5G5B5A1:
@ -784,13 +780,12 @@ void ImageFormat(Image *image, int newFormat)
{
image->data = (unsigned char *)malloc(image->width*image->height*4*sizeof(unsigned char));
for (int i = 0; i < image->width*image->height*3; i += 3)
for (int i = 0; i < image->width*image->height*3; i += 3, k++)
{
((unsigned char *)image->data)[i] = pixels[k].r;
((unsigned char *)image->data)[i + 1] = pixels[k].g;
((unsigned char *)image->data)[i + 2] = pixels[k].b;
((unsigned char *)image->data)[i + 3] = pixels[k].a;
k++;
}
} break;
case UNCOMPRESSED_R32:
@ -806,25 +801,23 @@ void ImageFormat(Image *image, int newFormat)
{
image->data = (float *)malloc(image->width*image->height*3*sizeof(float));
for (int i = 0; i < image->width*image->height*3; i += 3)
for (int i = 0; i < image->width*image->height*3; i += 3, k++)
{
((float *)image->data)[i] = (float)pixels[k].r/255.0f;
((float *)image->data)[i + 1] = (float)pixels[k].g/255.0f;
((float *)image->data)[i + 2] = (float)pixels[k].b/255.0f;
k++;
}
} break;
case UNCOMPRESSED_R32G32B32A32:
{
image->data = (float *)malloc(image->width*image->height*4*sizeof(float));
for (int i = 0; i < image->width*image->height*4; i += 4)
for (int i = 0; i < image->width*image->height*4; i += 4, k++)
{
((float *)image->data)[i] = (float)pixels[k].r/255.0f;
((float *)image->data)[i + 1] = (float)pixels[k].g/255.0f;
((float *)image->data)[i + 2] = (float)pixels[k].b/255.0f;
((float *)image->data)[i + 3] = (float)pixels[k].a/255.0f;
k++;
}
} break;
default: break;
@ -834,7 +827,11 @@ void ImageFormat(Image *image, int newFormat)
// In case original image had mipmaps, generate mipmaps for formated image
// NOTE: Original mipmaps are replaced by new ones, if custom mipmaps were used, they are lost
if (image->mipmaps > 1) ImageMipmaps(image);
if (image->mipmaps > 1)
{
image->mipmaps = 1;
ImageMipmaps(image);
}
}
else TraceLog(LOG_WARNING, "Image data format is compressed, can not be converted");
}
@ -1106,9 +1103,9 @@ void ImageMipmaps(Image *image)
mipSize += GetPixelDataSize(mipWidth, mipHeight, image->format); // Add mipmap size (in bytes)
}
TraceLog(LOG_DEBUG, "Total mipmaps required: %i", mipCount);
TraceLog(LOG_DEBUG, "Total size of data required: %i", mipSize);
TraceLog(LOG_DEBUG, "Image data original memory point: %i", image->data);
TraceLog(LOG_DEBUG, "Mipmaps available: %i - Mipmaps required: %i", image->mipmaps, mipCount);
TraceLog(LOG_DEBUG, "Mipmaps total size required: %i", mipSize);
TraceLog(LOG_DEBUG, "Image data memory start address: 0x%x", image->data);
if (image->mipmaps < mipCount)
{
@ -1117,7 +1114,7 @@ void ImageMipmaps(Image *image)
if (temp != NULL)
{
image->data = temp; // Assign new pointer (new size) to store mipmaps data
TraceLog(LOG_DEBUG, "Image data memory point reallocated: %i", temp);
TraceLog(LOG_DEBUG, "Image data memory point reallocated: 0x%x", temp);
}
else TraceLog(LOG_WARNING, "Mipmaps required memory could not be allocated");
@ -1131,7 +1128,7 @@ void ImageMipmaps(Image *image)
for (int i = 1; i < mipCount; i++)
{
TraceLog(LOG_DEBUG, "Next mipmap level %i (%i x %i) - size %i - mem pos: %i", i, mipWidth, mipHeight, mipSize, nextmip);
TraceLog(LOG_DEBUG, "Gen mipmap level: %i (%i x %i) - size: %i - offset: 0x%x", i, mipWidth, mipHeight, mipSize, nextmip);
ImageResize(&imCopy, mipWidth, mipHeight); // Uses internally Mitchell cubic downscale filter