Review float pixel format textures support

src/rlgl.c

@@ -1420,9 +1420,9 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi
         case COMPRESSED_DXT5_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, mipmapCount); break;
     #endif
     #if defined(GRAPHICS_API_OPENGL_ES2)
-        case UNCOMPRESSED_R32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break;  // NOTE: Requires extension OES_texture_float
+        case UNCOMPRESSED_R32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, width, height, 0, GL_LUMINANCE, GL_FLOAT, (float *)data); break;  // NOTE: Requires extension OES_texture_float
         case UNCOMPRESSED_R32G32B32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break;  // NOTE: Requires extension OES_texture_float
-        case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break;  // NOTE: Requires extension OES_texture_float
+        case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_FLOAT, (float *)data); break;  // NOTE: Requires extension OES_texture_float
         case COMPRESSED_DXT1_RGB: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, mipmapCount); break;
         case COMPRESSED_DXT1_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, mipmapCount); break;
         case COMPRESSED_DXT3_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, mipmapCount); break;      // NOTE: Not supported by WebGL
@@ -1476,9 +1476,9 @@ unsigned int rlLoadTexture(void *data, int width, int height, int format, int mi
         case UNCOMPRESSED_R5G5B5A1: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB5_A1, width, height, 0, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, (unsigned short *)data); break;
         case UNCOMPRESSED_R4G4B4A4: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA4, width, height, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, (unsigned short *)data); break;
         case UNCOMPRESSED_R8G8B8A8: glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, (unsigned char *)data); break;
-        case UNCOMPRESSED_R32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_R32F, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break;
+        case UNCOMPRESSED_R32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_R32F, width, height, 0, GL_RED, GL_FLOAT, (float *)data); break;
         case UNCOMPRESSED_R32G32B32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB32F, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break;
-        case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, width, height, 0, GL_RGB, GL_FLOAT, (float *)data); break;
+        case UNCOMPRESSED_R32G32B32A32: if (texFloatSupported) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, width, height, 0, GL_RGBA, GL_FLOAT, (float *)data); break;
         case COMPRESSED_DXT1_RGB: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, mipmapCount); break;
         case COMPRESSED_DXT1_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, mipmapCount); break;
         case COMPRESSED_DXT3_RGBA: if (texCompDXTSupported) LoadTextureCompressed((unsigned char *)data, width, height, GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, mipmapCount); break;

src/textures.c

@@ -417,6 +417,7 @@ void UnloadRenderTexture(RenderTexture2D target)
 }
 
 // Get pixel data from image in the form of Color struct array
+// TODO: Support float pixel data retrieval
 Color *GetImageData(Image image)
 {
     Color *pixels = (Color *)malloc(image.width*image.height*sizeof(Color));
@@ -719,7 +720,7 @@ void ImageFormat(Image *image, int newFormat)
                 case UNCOMPRESSED_R32:
                 {
                     image->data = (float *)malloc(image->width*image->height*sizeof(float));
-
+                    
                     for (int i = 0; i < image->width*image->height; i++)
                     {
                         ((float *)image->data)[i] = (float)((float)pixels[i].r*0.299f/255.0f + (float)pixels[i].g*0.587f/255.0f + (float)pixels[i].b*0.114f/255.0f);