Support for large textures

Texture dimensions larger than SHRT_MAX (32767)
were not supported by SwiftShader. Used integers
instead of shorts to store texture sizes to
increase the maximum texture size to INT_MAX
(2147483647).

Tests: dEQP-VK.memory.pipeline_barrier.host_write_uniform_texel_buffer.*
Tests: dEQP-VK.memory.pipeline_barrier.transfer_dst_uniform_texel_buffer.*

Bug b/133429305

Change-Id: I7913f5f4c1f933889e74c57851a837ad7982f87a
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/31989
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>

src/Device/Sampler.hpp

diff --git a/src/Device/Sampler.hpp b/src/Device/Sampler.hpp
index 8768a19..cbe29d8 100644
--- a/src/Device/Sampler.hpp
+++ b/src/Device/Sampler.hpp
@@ -31,16 +31,12 @@
 	{
 		const void *buffer[6];
 
-		float4 fWidth;
-		float4 fHeight;
-		float4 fDepth;
-
 		short uHalf[4];
 		short vHalf[4];
 		short wHalf[4];
-		short width[4];
-		short height[4];
-		short depth[4];
+		int4 width;
+		int4 height;
+		int4 depth;
 		short onePitchP[4];
 		int4 pitchP;
 		int4 sliceP;
@@ -154,6 +150,7 @@
 		VkCompareOp compareOp;
 		VkBorderColor border;
 		bool unnormalizedCoordinates;
+		bool largeTexture;
 
 		#if PERF_PROFILE
 		bool compressedFormat;