implement support for loading textures from uncompressed TGA files

Makefile

@@ -25,7 +25,7 @@ CFLAGS += -I./data
 CFLAGS += -I../SDL3-dist/include
 CFLAGS += -fpic
 
-#FLAGS += -fstack-protector -fstack-protector-all -fno-omit-frame-pointer -fsanitize=address
+FLAGS += -fstack-protector -fstack-protector-all -fno-omit-frame-pointer -fsanitize=address
 
 LDFLAGS += -lm
 ifeq ($(UNAME),Linux)
@@ -42,6 +42,7 @@ OBJS = \
 	src/file.o \
 	src/pack.o \
 	src/dds/validate.o \
+	src/tga/tga.o \
 	src/vulkan_helper.o \
 	src/collada/scene/vulkan.o \
 	src/collada/scene.o \

include/dds/validate.h

@@ -10,4 +10,18 @@ struct DDS_FILE {
 
 namespace dds {
   DDS_FILE const * validate(void const * data, uint32_t size, uint32_t ** out_offsets, void ** out_data, uint32_t * out_size);
+
+  static inline bool isDDSExtension(const char * filename, size_t length)
+  {
+    char a = filename[length - 4];
+    char b = filename[length - 3];
+    char c = filename[length - 2];
+    char d = filename[length - 1];
+
+    return
+      (a == '.') &&
+      (b == 'd' || b == 'D') &&
+      (c == 'd' || c == 'D') &&
+      (d == 's' || d == 'S');
+  }
 }

include/tga/tga.h

@@ -0,0 +1,43 @@
+#include <stdint.h>
+
+#define PACKED __attribute__((packed))
+
+namespace tga {
+  struct PACKED header {
+    uint8_t idLength;
+    uint8_t colorMapType;
+    uint8_t imageTypeCode;
+    struct PACKED {
+      uint16_t origin;
+      uint16_t length;
+      uint8_t depth;
+    } colorMap;
+    struct PACKED {
+      uint16_t xOrigin;
+      uint16_t yOrigin;
+      uint16_t width;
+      uint16_t height;
+      uint8_t bitsPerPixel;
+    } image;
+    uint8_t descriptor;
+  };
+  static_assert((sizeof (header)) == 18);
+
+  header const * validate(void const * data, uint32_t size, void ** outData, uint32_t * outSize);
+
+  static inline bool isTGAExtension(const char * filename, size_t length)
+  {
+    char a = filename[length - 4];
+    char b = filename[length - 3];
+    char c = filename[length - 2];
+    char d = filename[length - 1];
+
+    return
+      (a == '.') &&
+      (b == 't' || b == 'T') &&
+      (c == 'g' || c == 'G') &&
+      (d == 'a' || d == 'A');
+  }
+}
+
+#undef PACKED

include/vulkan_helper.h

@@ -62,3 +62,14 @@ void createImageFromFilenameDDS(VkDevice device,
                                 VkImage * outImage,
                                 VkDeviceMemory * outMemory,
                                 VkImageView * outImageView);
+
+void createImageFromFilenameTGA(VkDevice device,
+                                VkQueue queue,
+                                VkCommandBuffer commandBuffer,
+                                VkFence fence,
+                                VkDeviceSize nonCoherentAtomSize,
+                                VkPhysicalDeviceMemoryProperties const & physicalDeviceMemoryProperties,
+                                char const * const filename,
+                                VkImage * outImage,
+                                VkDeviceMemory * outMemory,
+                                VkImageView * outImageView);

src/collada/scene/vulkan.cpp

@@ -13,6 +13,7 @@
 #include "vulkan_helper.h"
 #include "dds/validate.h"
 #include "dds/vulkan.h"
+#include "tga/tga.h"
 
 #include "check.h"
 #include "new.h"
@@ -670,16 +671,34 @@ namespace collada::scene {
     images = NewM<Image>(descriptor->images_count);
 
     for (int i = 0; i < descriptor->images_count; i++) {
+      char const * filename = descriptor->images[i]->uri;
+      size_t length = strlen(filename);
+      if (dds::isDDSExtension(filename, length)) {
         createImageFromFilenameDDS(device,
                                    queue,
                                    commandBuffer,
                                    fence,
                                    physicalDeviceProperties.limits.nonCoherentAtomSize,
                                    physicalDeviceMemoryProperties,
-                                 descriptor->images[i]->uri,
+                                   filename,
                                    &images[i].image,
                                    &images[i].memory,
                                    &images[i].imageView);
+      } else if (tga::isTGAExtension(filename, length)) {
+        createImageFromFilenameTGA(device,
+                                   queue,
+                                   commandBuffer,
+                                   fence,
+                                   physicalDeviceProperties.limits.nonCoherentAtomSize,
+                                   physicalDeviceMemoryProperties,
+                                   filename,
+                                   &images[i].image,
+                                   &images[i].memory,
+                                   &images[i].imageView);
+      } else {
+        fprintf(stderr, "filename: %s\n", filename);
+        ASSERT(false, "invalid image filename extension");
+      }
     }
 
     // cleanup

src/tga/tga.cpp

@@ -0,0 +1,25 @@
+#include <assert.h>
+#include <stddef.h>
+
+#include "tga/tga.h"
+
+namespace tga {
+  header const * validate(void const * data, uint32_t size, void ** outData, uint32_t * outSize)
+  {
+    header const * const tga = (tga::header const *)data;
+
+    assert(tga->colorMapType == 0);
+    assert(tga->imageTypeCode == 2);
+    assert(tga->image.xOrigin == 0);
+    assert(tga->image.yOrigin == 0);
+    assert(tga->image.bitsPerPixel == 32);
+
+
+    uint32_t bytesPerPixel = tga->image.bitsPerPixel / 8;
+    size_t imageOffset = (sizeof (header)) + tga->idLength;
+    *outData = (void *)(((size_t)data) + imageOffset);
+    *outSize = tga->image.width * tga->image.width * bytesPerPixel;
+
+    return tga;
+  }
+}

src/vulkan_helper.cpp

@@ -13,6 +13,7 @@
 
 #include "dds/validate.h"
 #include "dds/vulkan.h"
+#include "tga/tga.h"
 
 #include "vulkan_helper.h"
 
@@ -115,85 +116,25 @@ VkDeviceSize allocateFromMemoryRequirements2(VkDevice device,
   return memoryAllocateInfo.allocationSize;
 }
 
-void createImageFromFilenameDDS(VkDevice device,
+// ddsFile->header.dwWidth
+// ddsFile->header.dwHeight
+// ddsFile->header.dwMipMapCount
+// uint32_t * mipOffsets;
+
+void textureTransfer(VkDevice device,
                      VkQueue queue,
                      VkCommandBuffer commandBuffer,
                      VkFence fence,
                      VkDeviceSize nonCoherentAtomSize,
                      VkPhysicalDeviceMemoryProperties const & physicalDeviceMemoryProperties,
-                                char const * const filename,
+                     uint32_t imageDataSize,
-                                VkImage * outImage,
+                     void * imageData,
-                                VkDeviceMemory * outMemory,
+                     VkImage image,
-                                VkImageView * outImageView)
+                     uint32_t width,
+                     uint32_t height,
+                     uint32_t levelCount,
+                     uint32_t * levelOffsets)
 {
-  uint32_t imageSize;
-  void const * imageStart = file::open(filename, &imageSize);
-  void * imageData;
-  uint32_t * mipOffsets;
-  uint32_t imageDataSize;
-  DDS_FILE const * ddsFile = dds::validate(imageStart, imageSize, &mipOffsets, &imageData, &imageDataSize);
-
-  VkFormat format = dds::dxgi_to_vulkan(ddsFile->header10.dxgiFormat);
-
-  // image
-
-  VkImage image;
-  VkImageCreateInfo imageCreateInfo{
-    .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
-    .imageType = VK_IMAGE_TYPE_2D,
-    .format = format,
-    .extent = {
-      .width = ddsFile->header.dwWidth,
-      .height = ddsFile->header.dwHeight,
-      .depth = 1
-    },
-    .mipLevels = ddsFile->header.dwMipMapCount,
-    .arrayLayers = 1,
-    .samples = VK_SAMPLE_COUNT_1_BIT,
-    .tiling = VK_IMAGE_TILING_OPTIMAL,
-    .usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
-    .initialLayout = VK_IMAGE_LAYOUT_UNDEFINED
-  };
-  VK_CHECK(vkCreateImage(device, &imageCreateInfo, nullptr, &image));
-  *outImage = image;
-
-  // image view
-
-  VkDeviceMemory imageMemory;
-  VkMemoryRequirements imageMemoryRequirements;
-  vkGetImageMemoryRequirements(device, image, &imageMemoryRequirements);
-  VkMemoryPropertyFlags imageMemoryPropertyFlags{ VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT };
-  VkMemoryAllocateFlags imageMemoryAllocateFlags{ };
-  VkDeviceSize stride;
-  allocateFromMemoryRequirements(device,
-                                 nonCoherentAtomSize,
-                                 physicalDeviceMemoryProperties,
-                                 imageMemoryRequirements,
-                                 imageMemoryPropertyFlags,
-                                 imageMemoryAllocateFlags,
-                                 1,
-                                 &imageMemory,
-                                 &stride);
-  *outMemory = imageMemory;
-  VK_CHECK(vkBindImageMemory(device, image, imageMemory, 0));
-
-  VkImageView imageView;
-  VkImageViewCreateInfo textureViewCreateInfo{
-    .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
-    .image = image,
-    .viewType = VK_IMAGE_VIEW_TYPE_2D,
-    .format = format,
-    .subresourceRange{
-      .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
-      .levelCount = ddsFile->header.dwMipMapCount,
-      .layerCount = 1
-    }
-  };
-  VK_CHECK(vkCreateImageView(device, &textureViewCreateInfo, nullptr, &imageView));
-  *outImageView = imageView;
-
-  // texture transfer: source buffer
-
   VkBuffer sourceBuffer{};
   VkBufferCreateInfo sourceBufferCreateInfo{
     .sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
@@ -243,7 +184,7 @@ void createImageFromFilenameDDS(VkDevice device,
     .image = image,
     .subresourceRange = {
       .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
-      .levelCount = ddsFile->header.dwMipMapCount,
+      .levelCount = levelCount,
       .layerCount = 1
     }
   };
@@ -253,24 +194,23 @@ void createImageFromFilenameDDS(VkDevice device,
     .pImageMemoryBarriers = &imageBarrier
   };
   vkCmdPipelineBarrier2(commandBuffer, &imageDependencyInfo);
-  VkBufferImageCopy * copyRegions = NewM<VkBufferImageCopy>(ddsFile->header.dwMipMapCount);
+  VkBufferImageCopy * copyRegions = NewM<VkBufferImageCopy>(levelCount);
-  for (uint32_t level = 0; level < ddsFile->header.dwMipMapCount; level++) {
+  for (uint32_t level = 0; level < levelCount; level++) {
     copyRegions[level] = {
-      .bufferOffset = mipOffsets[level],
+      .bufferOffset = levelOffsets[level],
       .imageSubresource{
         .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
         .mipLevel = level,
         .layerCount = 1
       },
       .imageExtent{
-        .width = max(1u, ddsFile->header.dwWidth >> level),
+        .width = max(1u, width >> level),
-        .height = max(1u, ddsFile->header.dwHeight >> level),
+        .height = max(1u, height >> level),
         .depth = 1
       },
     };
   }
-  vkCmdCopyBufferToImage(commandBuffer, sourceBuffer, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, ddsFile->header.dwMipMapCount, copyRegions);
+  vkCmdCopyBufferToImage(commandBuffer, sourceBuffer, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, levelCount, copyRegions);
-  free(mipOffsets);
   free(copyRegions);
 
   VkImageMemoryBarrier2 readBarrier{
@@ -282,7 +222,7 @@ void createImageFromFilenameDDS(VkDevice device,
     .oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
     .newLayout = VK_IMAGE_LAYOUT_READ_ONLY_OPTIMAL,
     .image = image,
-    .subresourceRange = { .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, .levelCount = ddsFile->header.dwMipMapCount, .layerCount = 1 }
+    .subresourceRange = { .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT, .levelCount = levelCount, .layerCount = 1 }
   };
   VkDependencyInfo readDependencyInfo{
     .sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
@@ -305,3 +245,175 @@ void createImageFromFilenameDDS(VkDevice device,
   vkDestroyBuffer(device, sourceBuffer, nullptr);
   vkFreeMemory(device, sourceBufferMemory, nullptr);
 }
+
+void createImage(VkDevice device,
+                 VkDeviceSize nonCoherentAtomSize,
+                 VkPhysicalDeviceMemoryProperties const & physicalDeviceMemoryProperties,
+                 VkFormat format,
+                 uint32_t width,
+                 uint32_t height,
+                 uint32_t levelCount,
+                 VkImage * outImage,
+                 VkDeviceMemory * outMemory,
+                 VkImageView * outImageView)
+{
+  // image
+
+  VkImage image;
+  VkImageCreateInfo imageCreateInfo{
+    .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
+    .imageType = VK_IMAGE_TYPE_2D,
+    .format = format,
+    .extent = {
+      .width = width,
+      .height = height,
+      .depth = 1
+    },
+    .mipLevels = levelCount,
+    .arrayLayers = 1,
+    .samples = VK_SAMPLE_COUNT_1_BIT,
+    .tiling = VK_IMAGE_TILING_OPTIMAL,
+    .usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
+    .initialLayout = VK_IMAGE_LAYOUT_UNDEFINED
+  };
+  VK_CHECK(vkCreateImage(device, &imageCreateInfo, nullptr, &image));
+  *outImage = image;
+
+  // image view
+
+  VkDeviceMemory imageMemory;
+  VkMemoryRequirements imageMemoryRequirements;
+  vkGetImageMemoryRequirements(device, image, &imageMemoryRequirements);
+  VkMemoryPropertyFlags imageMemoryPropertyFlags{ VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT };
+  VkMemoryAllocateFlags imageMemoryAllocateFlags{ };
+  VkDeviceSize stride;
+  allocateFromMemoryRequirements(device,
+                                 nonCoherentAtomSize,
+                                 physicalDeviceMemoryProperties,
+                                 imageMemoryRequirements,
+                                 imageMemoryPropertyFlags,
+                                 imageMemoryAllocateFlags,
+                                 1,
+                                 &imageMemory,
+                                 &stride);
+  *outMemory = imageMemory;
+  VK_CHECK(vkBindImageMemory(device, image, imageMemory, 0));
+
+  VkImageView imageView;
+  VkImageViewCreateInfo textureViewCreateInfo{
+    .sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
+    .image = image,
+    .viewType = VK_IMAGE_VIEW_TYPE_2D,
+    .format = format,
+    .subresourceRange{
+      .aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+      .levelCount = levelCount,
+      .layerCount = 1
+    }
+  };
+  VK_CHECK(vkCreateImageView(device, &textureViewCreateInfo, nullptr, &imageView));
+  *outImageView = imageView;
+}
+
+void createImageFromFilenameDDS(VkDevice device,
+                                VkQueue queue,
+                                VkCommandBuffer commandBuffer,
+                                VkFence fence,
+                                VkDeviceSize nonCoherentAtomSize,
+                                VkPhysicalDeviceMemoryProperties const & physicalDeviceMemoryProperties,
+                                char const * const filename,
+                                VkImage * outImage,
+                                VkDeviceMemory * outMemory,
+                                VkImageView * outImageView)
+{
+  uint32_t imageSize;
+  void const * imageStart = file::open(filename, &imageSize);
+  void * imageData;
+  uint32_t * levelOffsets;
+  uint32_t imageDataSize;
+  DDS_FILE const * ddsFile = dds::validate(imageStart, imageSize, &levelOffsets, &imageData, &imageDataSize);
+
+  VkFormat format = dds::dxgi_to_vulkan(ddsFile->header10.dxgiFormat);
+  uint32_t width = ddsFile->header.dwWidth;
+  uint32_t height = ddsFile->header.dwHeight;
+  uint32_t levelCount = ddsFile->header.dwMipMapCount;
+
+  createImage(device,
+              nonCoherentAtomSize,
+              physicalDeviceMemoryProperties,
+              format,
+              width,
+              height,
+              levelCount,
+              outImage,
+              outMemory,
+              outImageView);
+
+  textureTransfer(device,
+                  queue,
+                  commandBuffer,
+                  fence,
+                  nonCoherentAtomSize,
+                  physicalDeviceMemoryProperties,
+                  imageDataSize,
+                  imageData,
+                  *outImage,
+                  width,
+                  height,
+                  levelCount,
+                  levelOffsets);
+
+  free(levelOffsets);
+  // imageData is not malloc'ed, it is a pointer to file:: data, which is also not malloc'ed
+}
+
+void createImageFromFilenameTGA(VkDevice device,
+                                VkQueue queue,
+                                VkCommandBuffer commandBuffer,
+                                VkFence fence,
+                                VkDeviceSize nonCoherentAtomSize,
+                                VkPhysicalDeviceMemoryProperties const & physicalDeviceMemoryProperties,
+                                char const * const filename,
+                                VkImage * outImage,
+                                VkDeviceMemory * outMemory,
+                                VkImageView * outImageView)
+{
+  uint32_t imageSize;
+  void const * imageStart = file::open(filename, &imageSize);
+  void * imageData;
+  uint32_t imageDataSize;
+  tga::header const * tga = tga::validate(imageStart, imageSize, &imageData, &imageDataSize);
+
+  VkFormat format = VK_FORMAT_B8G8R8A8_UNORM;
+  uint32_t width = tga->image.width;
+  uint32_t height = tga->image.height;
+  uint32_t levelCount = 1;
+  uint32_t levelOffset = 0;
+
+  createImage(device,
+              nonCoherentAtomSize,
+              physicalDeviceMemoryProperties,
+              format,
+              width,
+              height,
+              levelCount,
+              outImage,
+              outMemory,
+              outImageView);
+
+  textureTransfer(device,
+                  queue,
+                  commandBuffer,
+                  fence,
+                  nonCoherentAtomSize,
+                  physicalDeviceMemoryProperties,
+                  imageDataSize,
+                  imageData,
+                  *outImage,
+                  width,
+                  height,
+                  levelCount,
+                  &levelOffset);
+
+  // imageData is not malloc'ed, it is a pointer to file:: data, which is also not malloc'ed
+}