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-rw-r--r--src/textures.c179
1 files changed, 133 insertions, 46 deletions
diff --git a/src/textures.c b/src/textures.c
index 19eb09b4..ee073e9a 100644
--- a/src/textures.c
+++ b/src/textures.c
@@ -32,6 +32,8 @@
#include <stdlib.h> // Declares malloc() and free() for memory management
#include "stb_image.h" // Used to read image data (multiple formats support)
+#include "utils.h" // rRES data decompression utility function
+
//----------------------------------------------------------------------------------
// Defines and Macros
//----------------------------------------------------------------------------------
@@ -95,10 +97,121 @@ Image LoadImage(const char *fileName)
return image;
}
-// Unload image from CPU memory (RAM)
-void UnloadImage(Image image)
+// Load an image from rRES file (raylib Resource)
+Image LoadImageFromRES(const char *rresName, int resId)
{
- free(image.pixels);
+ // NOTE: rresName could be directly a char array with all the data!!! ---> TODO!
+ Image image;
+ bool found = false;
+
+ char id[4]; // rRES file identifier
+ unsigned char version; // rRES file version and subversion
+ char useless; // rRES header reserved data
+ short numRes;
+
+ ResInfoHeader infoHeader;
+
+ FILE *rresFile = fopen(rresName, "rb");
+
+ if (!rresFile) printf("Error opening raylib Resource file\n");
+
+ // Read rres file (basic file check - id)
+ fread(&id[0], sizeof(char), 1, rresFile);
+ fread(&id[1], sizeof(char), 1, rresFile);
+ fread(&id[2], sizeof(char), 1, rresFile);
+ fread(&id[3], sizeof(char), 1, rresFile);
+ fread(&version, sizeof(char), 1, rresFile);
+ fread(&useless, sizeof(char), 1, rresFile);
+
+ if ((id[0] != 'r') && (id[1] != 'R') && (id[2] != 'E') &&(id[3] != 'S'))
+ {
+ printf("This is not a valid raylib Resource file!\n");
+ exit(1);
+ }
+
+ // Read number of resources embedded
+ fread(&numRes, sizeof(short), 1, rresFile);
+
+ for (int i = 0; i < numRes; i++)
+ {
+ fread(&infoHeader, sizeof(ResInfoHeader), 1, rresFile);
+
+ if (infoHeader.id == resId)
+ {
+ found = true;
+
+ // Check data is of valid IMAGE type
+ if (infoHeader.type == 0) // IMAGE data type
+ {
+ // TODO: Check data compression type
+
+ // NOTE: We suppose compression type 2 (DEFLATE - default)
+ short imgWidth, imgHeight;
+ char colorFormat, mipmaps;
+
+ fread(&imgWidth, sizeof(short), 1, rresFile); // Image width
+ fread(&imgHeight, sizeof(short), 1, rresFile); // Image height
+ fread(&colorFormat, 1, 1, rresFile); // Image data color format (default: RGBA 32 bit)
+ fread(&mipmaps, 1, 1, rresFile); // Mipmap images included (default: 0)
+
+ printf("Image width: %i\n", (int)imgWidth);
+ printf("Image height: %i\n", (int)imgHeight);
+
+ image.width = (int)imgWidth;
+ image.height = (int)imgHeight;
+
+ unsigned char *data = malloc(infoHeader.size);
+
+ fread(data, infoHeader.size, 1, rresFile);
+
+ unsigned char *imgData = DecompressData(data, infoHeader.size, infoHeader.srcSize);
+
+ image.pixels = (Color *)malloc(sizeof(Color)*imgWidth*imgHeight);
+
+ int pix = 0;
+
+ for (int i = 0; i < (imgWidth*imgHeight*4); i += 4)
+ {
+ image.pixels[pix].r = imgData[i];
+ image.pixels[pix].g = imgData[i+1];
+ image.pixels[pix].b = imgData[i+2];
+ image.pixels[pix].a = imgData[i+3];
+ pix++;
+ }
+
+ free(imgData);
+
+ free(data);
+ }
+ else
+ {
+ printf("Required resource do not seem to be a valid IMAGE resource\n");
+ exit(2);
+ }
+ }
+ else
+ {
+ // Depending on type, skip the right amount of parameters
+ switch (infoHeader.type)
+ {
+ case 0: fseek(rresFile, 6, SEEK_CUR); break; // IMAGE: Jump 6 bytes of parameters
+ case 1: fseek(rresFile, 6, SEEK_CUR); break; // SOUND: Jump 6 bytes of parameters
+ case 2: fseek(rresFile, 5, SEEK_CUR); break; // MODEL: Jump 5 bytes of parameters (TODO: Review)
+ case 3: break; // TEXT: No parameters
+ case 4: break; // RAW: No parameters
+ default: break;
+ }
+
+ // Jump DATA to read next infoHeader
+ fseek(rresFile, infoHeader.size, SEEK_CUR);
+ }
+ }
+
+ fclose(rresFile);
+
+ if (!found) printf("Required resource id could not be found in the raylib Resource file!\n");
+
+ return image;
}
// Load an image as texture into GPU memory
@@ -140,6 +253,17 @@ Texture2D LoadTexture(const char *fileName)
return texture;
}
+// Load an image as texture from rRES file (raylib Resource)
+Texture2D LoadTextureFromRES(const char *rresName, int resId)
+{
+ Texture2D texture;
+
+ Image image = LoadImageFromRES(rresName, resId);
+ texture = CreateTexture2D(image);
+
+ return texture;
+}
+
// Load an image as texture (and convert to POT with mipmaps)
Texture2D LoadTextureEx(const char *fileName, bool createPOT, bool mipmaps)
{
@@ -187,6 +311,12 @@ Texture2D CreateTexture2D(Image image)
return texture;
}
+// Unload image from CPU memory (RAM)
+void UnloadImage(Image image)
+{
+ free(image.pixels);
+}
+
// Unload texture from GPU memory
void UnloadTexture(Texture2D texture)
{
@@ -299,47 +429,4 @@ void DrawTexturePro(Texture2D texture, Rectangle sourceRec, Rectangle destRec, V
glPopMatrix();
glDisable(GL_TEXTURE_2D); // Disable textures usage
-}
-
-// Creates a bitmap (BMP) file from an array of pixel data
-// NOTE: This function is only used by module [core], not explicitly available to raylib users
-extern void WriteBitmap(const char *fileName, const Color *imgDataPixel, int width, int height)
-{
- int filesize = 54 + 3*width*height;
-
- unsigned char bmpFileHeader[14] = {'B','M', 0,0,0,0, 0,0, 0,0, 54,0,0,0}; // Standard BMP file header
- unsigned char bmpInfoHeader[40] = {40,0,0,0, 0,0,0,0, 0,0,0,0, 1,0, 24,0}; // Standard BMP info header
-
- bmpFileHeader[2] = (unsigned char)(filesize);
- bmpFileHeader[3] = (unsigned char)(filesize>>8);
- bmpFileHeader[4] = (unsigned char)(filesize>>16);
- bmpFileHeader[5] = (unsigned char)(filesize>>24);
-
- bmpInfoHeader[4] = (unsigned char)(width);
- bmpInfoHeader[5] = (unsigned char)(width>>8);
- bmpInfoHeader[6] = (unsigned char)(width>>16);
- bmpInfoHeader[7] = (unsigned char)(width>>24);
- bmpInfoHeader[8] = (unsigned char)(height);
- bmpInfoHeader[9] = (unsigned char)(height>>8);
- bmpInfoHeader[10] = (unsigned char)(height>>16);
- bmpInfoHeader[11] = (unsigned char)(height>>24);
-
- FILE *bmpFile = fopen(fileName, "wb"); // Define a pointer to bitmap file and open it in write-binary mode
-
- // NOTE: fwrite parameters are: data pointer, size in bytes of each element to be written, number of elements, file-to-write pointer
- fwrite(bmpFileHeader, sizeof(unsigned char), 14, bmpFile); // Write BMP file header data
- fwrite(bmpInfoHeader, sizeof(unsigned char), 40, bmpFile); // Write BMP info header data
-
- // Write pixel data to file
- for (int y = 0; y < height ; y++)
- {
- for (int x = 0; x < width; x++)
- {
- fputc(imgDataPixel[x + y*width].b, bmpFile);
- fputc(imgDataPixel[x + y*width].g, bmpFile);
- fputc(imgDataPixel[x + y*width].r, bmpFile);
- }
- }
-
- fclose(bmpFile); // Close bitmap file
} \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-16 20:54:08 +0000