convert assets to png and switch to srgb color loading

src/main.cpp

@@ -31,7 +31,7 @@ SDL_GPUShader *basic_vertex_shader;
 SDL_GPUShader *basic_pixel_shader;
 
 SDL_GPUGraphicsPipeline *basic_graphics_pipeline;
-SDL_GPUSampler 			*trilinear_sampler;
+SDL_GPUSampler 			*point_sampler;
 
 SDL_GPUBuffer *vertex_buffer;
 SDL_GPUBuffer *index_buffer;
@@ -322,8 +322,7 @@ SDL_GPUTexture *create_shader_texture(const char *path) {
 
     SDL_GPUTextureFormat format = SDL_GPU_TEXTUREFORMAT_INVALID;
     if (channels == 1) format = SDL_GPU_TEXTUREFORMAT_A8_UNORM;
-    if (channels == 4) format = SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM;
-    // if (channels == 4) format = SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM_SRGB;
+    if (channels == 4) format = SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM_SRGB;
 
     if (format == SDL_GPU_TEXTUREFORMAT_INVALID) {
         log_error("Failed to find texture format for texture (\"%s\").", path);
@@ -432,8 +431,7 @@ SDL_GPUTexture* create_shader_texture_array(Uint32 num_textures, const char **te
 
     SDL_GPUTextureCreateInfo texture_info = {
         .type   = SDL_GPU_TEXTURETYPE_2D_ARRAY,
-        .format = SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM,
-        // .format = SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM_SRGB,
+        .format = SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM_SRGB,
         .usage  = SDL_GPU_TEXTUREUSAGE_SAMPLER,
         .width  = (Uint32)width,
         .height = (Uint32)height,
@@ -696,43 +694,37 @@ int main(int argc, char **argv) {
         }
     }
 
-    const char *player_texture_array[] = { "../assets/strawberry.tga" };
+    const char *player_texture_array[] = { "../assets/strawberry.png" };
     SDL_GPUTexture *player_texture = create_shader_texture_array(SDL_arraysize(player_texture_array), player_texture_array, "player_textures");
     if (!player_texture) {
         log_error("Failed to create shader texture. Exiting.");
         return 1;
     }
 
-    SDL_GPUTexture *quad_texture = create_shader_texture("../assets/tile_grass_2.tga");
+    SDL_GPUTexture *quad_texture = create_shader_texture("../assets/tile_grass_2.png");
     if (!player_texture) {
         log_error("Failed to create shader texture. Exiting.");
         return 1;
     }
 
-    SDL_GPUTexture *glyph_texture = create_shader_texture("../assets/fonts/glyph_atlas_lexend.tga");
-    if (!player_texture) {
-        log_error("Failed to create shader texture. Exiting.");
-        return 1;
-    }
-
-    const char *tile_texture_array[] = { "../assets/tile_empty.tga", "../assets/tile_grass_2.tga" , "../assets/tile_dirt.tga" , "../assets/tile_water.tga", "../assets/tile_error.tga" };
+    const char *tile_texture_array[] = { "../assets/tile_empty.png", "../assets/tile_grass_2.png" , "../assets/tile_dirt.png" , "../assets/tile_water.png", "../assets/tile_error.png" };
     SDL_GPUTexture *tile_texture = create_shader_texture_array(SDL_arraysize(tile_texture_array), tile_texture_array, "tile_textures");
     if (!player_texture) {
         log_error("Failed to create shader texture array. Exiting.");
         return 1;
     }
 
-    SDL_GPUSamplerCreateInfo trilinear_sampler_info = {
-        .min_filter  = SDL_GPU_FILTER_LINEAR,
-        .mag_filter  = SDL_GPU_FILTER_LINEAR,
-        .mipmap_mode = SDL_GPU_SAMPLERMIPMAPMODE_LINEAR,
+    SDL_GPUSamplerCreateInfo point_sampler_info = {
+        .min_filter  = SDL_GPU_FILTER_NEAREST,
+        .mag_filter  = SDL_GPU_FILTER_NEAREST,
+        .mipmap_mode = SDL_GPU_SAMPLERMIPMAPMODE_NEAREST,
 
         .address_mode_u = SDL_GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE,
         .address_mode_v = SDL_GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE,
         .address_mode_w = SDL_GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE,
     };
 
-    trilinear_sampler = SDL_CreateGPUSampler(device, &trilinear_sampler_info);
+    point_sampler = SDL_CreateGPUSampler(device, &point_sampler_info);
 
     vertex_buffer = create_buffer(SDL_GPU_BUFFERUSAGE_VERTEX, sizeof(vertices), vertices, "vertex_buffer");
     if (!vertex_buffer) {
@@ -960,7 +952,7 @@ int main(int argc, char **argv) {
                 { .buffer = tiles_instance_buffer, .offset = 0 },
             };
             SDL_GPUTextureSamplerBinding texture_bindings[] = {
-                { .texture = tile_texture, .sampler = trilinear_sampler },
+                { .texture = tile_texture, .sampler = point_sampler },
             };
 
             SDL_BindGPUGraphicsPipeline(render_pass, basic_graphics_pipeline);
@@ -976,7 +968,7 @@ int main(int argc, char **argv) {
                 { .buffer = player_instance_buffer, .offset = 0 },
             };
             SDL_GPUTextureSamplerBinding texture_bindings[] = {
-                { .texture = player_texture, .sampler = trilinear_sampler },
+                { .texture = player_texture, .sampler = point_sampler },
             };
             SDL_BindGPUGraphicsPipeline(render_pass, basic_graphics_pipeline);
             SDL_BindGPUVertexBuffers(render_pass, 0, vertex_buffers, SDL_arraysize(vertex_buffers));