[video_core/host_shaders] add Snapdragon GSRv1 fragment shaders

Signed-off-by: lizzie <lizzie@eden-emu.dev>

.patch/snapdragon_gsr/0001-glslang-fix.patch

@@ -0,0 +1,61 @@
+diff --git a/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag b/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag
+index 7074999..69927af 100644
+--- a/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag
++++ b/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag
+@@ -1,4 +1,4 @@
+-#version 300 es
++#version 320 es
+ 
+ //============================================================================================================
+ //
+@@ -63,9 +63,9 @@ vec2 weightY(float dx, float dy,float c, float std)
+ 
+ void main()
+ {
+-	int mode = OperationMode;
+-	float edgeThreshold = EdgeThreshold;
+-	float edgeSharpness = EdgeSharpness;
++	const int mode = OperationMode;
++	const float edgeThreshold = EdgeThreshold;
++	const float edgeSharpness = EdgeSharpness;
+ 
+ 	vec4 color;
+ 	if(mode == 1)
+@@ -93,10 +93,10 @@ void main()
+ 		{
+ 			coord.x += ViewportInfo[0].x;
+ 
+-			vec4 right = textureGather(ps0,coord + highp vec2(ViewportInfo[0].x, 0.0), mode);
++			vec4 right = textureGather(ps0,coord + vec2(ViewportInfo[0].x, 0.0), mode);
+ 			vec4 upDown;
+-			upDown.xy = textureGather(ps0,coord + highp vec2(0.0, -ViewportInfo[0].y),mode).wz;
+-			upDown.zw  = textureGather(ps0,coord+ highp vec2(0.0, ViewportInfo[0].y), mode).yx;
++			upDown.xy = textureGather(ps0,coord + vec2(0.0, -ViewportInfo[0].y),mode).wz;
++			upDown.zw  = textureGather(ps0,coord+ vec2(0.0, ViewportInfo[0].y), mode).yx;
+ 
+ 			float mean = (left.y+left.z+right.x+right.w)*0.25;
+ 			left = left - vec4(mean);
+diff --git a/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag b/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag
+index d2df646..1f1daa6 100644
+--- a/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag
++++ b/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag
+@@ -1,4 +1,4 @@
+-#version 300 es
++#version 320 es
+ 
+ //============================================================================================================
+ //
+@@ -124,10 +124,10 @@ void main()
+ 		{
+ 			coord.x += ViewportInfo[0].x;
+ 
+-			vec4 right = textureGather(ps0,coord + highp vec2(ViewportInfo[0].x, 0.0), OperationMode);
++			vec4 right = textureGather(ps0,coord + vec2(ViewportInfo[0].x, 0.0), OperationMode);
+ 			vec4 upDown;
+-			upDown.xy = textureGather(ps0,coord + highp vec2(0.0, -ViewportInfo[0].y),OperationMode).wz;
+-			upDown.zw  = textureGather(ps0,coord+ highp vec2(0.0, ViewportInfo[0].y), OperationMode).yx;
++			upDown.xy = textureGather(ps0,coord + vec2(0.0, -ViewportInfo[0].y),OperationMode).wz;
++			upDown.zw  = textureGather(ps0,coord+ vec2(0.0, ViewportInfo[0].y), OperationMode).yx;
+ 
+ 			float mean = (left.y+left.z+right.x+right.w)*0.25;
+ 			left = left - vec4(mean);

CMakeLists.txt

@@ -257,6 +257,9 @@ endif()
 
 option(YUZU_USE_BUNDLED_OPENSSL "Download bundled OpenSSL build" ${DEFAULT_YUZU_USE_BUNDLED_OPENSSL})
 
+AddJsonPackage(snapdragon_gsr)
+
+# TODO(crueter): CPM this
 if (ANDROID AND YUZU_DOWNLOAD_ANDROID_VVL)
     AddJsonPackage(vulkan-validation-layers)
 

cpmfile.json

@@ -102,6 +102,15 @@
         "artifact": "android-binaries-%VERSION%.zip",
         "hash": "8812ae84cbe49e6a3418ade9c458d3be6d74a3dffd319d4502007b564d580998056e8190414368ec11b27bc83993c7a0dad713c31bcc3d9553b51243efee3753"
     },
+    "snapdragon_gsr": {
+        "repo": "SnapdragonStudios/snapdragon-gsr",
+        "package": "snapdragon_gsr",
+        "hash": "dsfsdfsd",
+        "sha": "d926f074bcb9d714e179f1ce0fcb9ee2eeb5074e",
+        "patches": [
+            "0001-glslang-fix.patch"
+        ]
+    },
     "quazip": {
         "package": "QuaZip-Qt6",
         "repo": "stachenov/quazip",

src/video_core/host_shaders/CMakeLists.txt

@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 set(FIDELITYFX_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/externals/FidelityFX-FSR/ffx-fsr)
+set(SNAPDRAGON_GSR_INCLUDE_DIR ${snapdragon_gsr_SOURCE_DIR}/sgsr/v1/include/glsl/)
 
 set(FIDELITYFX_FILES
     ${FIDELITYFX_INCLUDE_DIR}/ffx_a.h
@@ -76,6 +77,8 @@ set(SHADER_FILES
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_quad_indexed.comp
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_turbo_mode.comp
     ${CMAKE_CURRENT_SOURCE_DIR}/vulkan_uint8.comp
+    ${SNAPDRAGON_GSR_INCLUDE_DIR}/sgsr1_shader_mobile.frag
+    ${SNAPDRAGON_GSR_INCLUDE_DIR}/sgsr1_shader_mobile_edge_direction.frag
 )
 
 if (PLATFORM_HAIKU)
@@ -145,11 +148,42 @@ foreach(SOURCE_FILE IN ITEMS ${SHADER_FILES})
             OUTPUT
                 ${SPIRV_HEADER_FILE}
             COMMAND
-                ${GLSLANGVALIDATOR} -V ${QUIET_FLAG} -I"${FIDELITYFX_INCLUDE_DIR}" ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE} --target-env ${SPIR_V_VERSION}
+                ${GLSLANGVALIDATOR} -V ${QUIET_FLAG} -DUseUniformBlock=1 ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE} --target-env ${SPIR_V_VERSION}
             MAIN_DEPENDENCY
                 ${SOURCE_FILE}
         )
         set(SHADER_HEADERS ${SHADER_HEADERS} ${SPIRV_HEADER_FILE})
+    else()
+        # Skip generating source headers on Vulkan exclusive files
+        if (NOT ${FILENAME} MATCHES "vulkan.*" AND NOT ${FILENAME} MATCHES "sgsr1.*")
+            set(SOURCE_HEADER_FILE ${SHADER_DIR}/${SHADER_NAME}.h)
+            add_custom_command(
+                OUTPUT
+                    ${SOURCE_HEADER_FILE}
+                COMMAND
+                    ${CMAKE_COMMAND} -P ${HEADER_GENERATOR} ${SOURCE_FILE} ${SOURCE_HEADER_FILE} ${INPUT_FILE}
+                MAIN_DEPENDENCY
+                    ${SOURCE_FILE}
+                DEPENDS
+                    ${INPUT_FILE}
+                    # HEADER_GENERATOR should be included here but msbuild seems to assume it's always modified
+            )
+            set(SHADER_HEADERS ${SHADER_HEADERS} ${SOURCE_HEADER_FILE})
+        endif()
+        # Skip compiling to SPIR-V OpenGL exclusive files
+        if (NOT ${FILENAME} MATCHES "opengl.*")
+            string(TOUPPER ${SHADER_NAME}_SPV SPIRV_VARIABLE_NAME)
+            set(SPIRV_HEADER_FILE ${SHADER_DIR}/${SHADER_NAME}_spv.h)
+            add_custom_command(
+                OUTPUT
+                    ${SPIRV_HEADER_FILE}
+                COMMAND
+                    ${GLSLANGVALIDATOR} -V ${QUIET_FLAG} -I"${FIDELITYFX_INCLUDE_DIR}" ${GLSL_FLAGS} --variable-name ${SPIRV_VARIABLE_NAME} -o ${SPIRV_HEADER_FILE} ${SOURCE_FILE} --target-env ${SPIR_V_VERSION}
+                MAIN_DEPENDENCY
+                    ${SOURCE_FILE}
+            )
+            set(SHADER_HEADERS ${SHADER_HEADERS} ${SPIRV_HEADER_FILE})
+        endif()
     endif()
 endforeach()