Remove support for PVRTC texture encoding and decoding

On the only platform where PVRTC is supported (iOS),
ETC2 generally supersedes PVRTC in every possible way. The increased
memory usage is not really a problem thanks to modern iOS' devices
processing power being higher than its Android counterparts.

1 files changed, 0 insertions, 57 deletions

diff --git a/drivers/vulkan/rendering_device_vulkan.cpp b/drivers/vulkan/rendering_device_vulkan.cpp
index f6d2427b5c..4d742a36d9 100644
--- a/drivers/vulkan/rendering_device_vulkan.cpp
+++ b/drivers/vulkan/rendering_device_vulkan.cpp
@@ -387,14 +387,6 @@ const VkFormat RenderingDeviceVulkan::vulkan_formats[RenderingDevice::DATA_FORMA
 	VK_FORMAT_G16_B16_R16_3PLANE_422_UNORM,
 	VK_FORMAT_G16_B16R16_2PLANE_422_UNORM,
 	VK_FORMAT_G16_B16_R16_3PLANE_444_UNORM,
-	VK_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG,
-	VK_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG,
-	VK_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG,
-	VK_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG,
-	VK_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG,
-	VK_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG,
-	VK_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG,
-	VK_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG,
 };
 
 const char *RenderingDeviceVulkan::named_formats[RenderingDevice::DATA_FORMAT_MAX] = {
@@ -616,14 +608,6 @@ const char *RenderingDeviceVulkan::named_formats[RenderingDevice::DATA_FORMAT_MA
 	"G16_B16_R16_3Plane_422_Unorm",
 	"G16_B16R16_2Plane_422_Unorm",
 	"G16_B16_R16_3Plane_444_Unorm",
-	"Pvrtc1_2Bpp_Unorm_Block_Img",
-	"Pvrtc1_4Bpp_Unorm_Block_Img",
-	"Pvrtc2_2Bpp_Unorm_Block_Img",
-	"Pvrtc2_4Bpp_Unorm_Block_Img",
-	"Pvrtc1_2Bpp_Srgb_Block_Img",
-	"Pvrtc1_4Bpp_Srgb_Block_Img",
-	"Pvrtc2_2Bpp_Srgb_Block_Img",
-	"Pvrtc2_4Bpp_Srgb_Block_Img"
 };
 
 int RenderingDeviceVulkan::get_format_vertex_size(DataFormat p_format) {
@@ -970,15 +954,6 @@ uint32_t RenderingDeviceVulkan::get_image_format_pixel_size(DataFormat p_format)
 		case DATA_FORMAT_G16_B16R16_2PLANE_422_UNORM:
 		case DATA_FORMAT_G16_B16_R16_3PLANE_444_UNORM:
 			return 8;
-		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG:
-			return 1;
 		default: {
 			ERR_PRINT("Format not handled, bug");
 		}
@@ -1048,20 +1023,6 @@ void RenderingDeviceVulkan::get_compressed_image_format_block_dimensions(DataFor
 			r_w = 4;
 			r_h = 4;
 			return;
-		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG:
-			r_w = 4;
-			r_h = 4;
-			return;
-		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG:
-			r_w = 8;
-			r_h = 4;
-			return;
 		default: {
 			r_w = 1;
 			r_h = 1;
@@ -1138,15 +1099,6 @@ uint32_t RenderingDeviceVulkan::get_compressed_image_format_block_byte_size(Data
 		case DATA_FORMAT_ASTC_12x12_UNORM_BLOCK:
 		case DATA_FORMAT_ASTC_12x12_SRGB_BLOCK:
 			return 8; //wrong
-		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG:
-			return 8; //what varies is resolution
 		default: {
 		}
 	}
@@ -1167,16 +1119,7 @@ uint32_t RenderingDeviceVulkan::get_compressed_image_format_pixel_rshift(DataFor
 		case DATA_FORMAT_ETC2_R8G8B8A1_SRGB_BLOCK:
 		case DATA_FORMAT_EAC_R11_UNORM_BLOCK:
 		case DATA_FORMAT_EAC_R11_SNORM_BLOCK:
-		case DATA_FORMAT_PVRTC1_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_4BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_4BPP_SRGB_BLOCK_IMG:
 			return 1;
-		case DATA_FORMAT_PVRTC1_2BPP_UNORM_BLOCK_IMG: //these formats are quarter byte size, so rshift is 1
-		case DATA_FORMAT_PVRTC2_2BPP_UNORM_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC1_2BPP_SRGB_BLOCK_IMG:
-		case DATA_FORMAT_PVRTC2_2BPP_SRGB_BLOCK_IMG:
-			return 2;
 		default: {
 		}
 	}