Merge pull request #10911 from hrydgard/shader-depal

Vulkan: Depalettize in shaders

Core/Compatibility.cpp

@@ -57,6 +57,8 @@ void Compatibility::CheckSettings(IniFile &iniFile, const std::string &gameID) {
 	CheckSetting(iniFile, gameID, "RequireDefaultCPUClock", &flags_.RequireDefaultCPUClock);
 	CheckSetting(iniFile, gameID, "DisableReadbacks", &flags_.DisableReadbacks);
 	CheckSetting(iniFile, gameID, "DisableAccurateDepth", &flags_.DisableAccurateDepth);
+	CheckSetting(iniFile, gameID, "MGS2AcidHack", &flags_.MGS2AcidHack);
+	CheckSetting(iniFile, gameID, "SonicRivalsHack", &flags_.SonicRivalsHack);
 }
 
 void Compatibility::CheckSetting(IniFile &iniFile, const std::string &gameID, const char *option, bool *flag) {

Core/Compatibility.h

@@ -57,6 +57,8 @@ struct CompatFlags {
 	bool RequireDefaultCPUClock;
 	bool DisableReadbacks;
 	bool DisableAccurateDepth;
+	bool MGS2AcidHack;
+	bool SonicRivalsHack;
 };
 
 class IniFile;

GPU/Common/DepalettizeShaderCommon.cpp

@@ -70,7 +70,7 @@ void GenerateDepalShader300(char *buffer, GEBufferFormat pixelFormat, ShaderLang
 	int mask = gstate.getClutIndexMask();
 	int shift = gstate.getClutIndexShift();
 	int offset = gstate.getClutIndexStartPos();
-	const GEPaletteFormat clutFormat = gstate.getClutPaletteFormat();
+	GEPaletteFormat clutFormat = gstate.getClutPaletteFormat();
 	// Unfortunately sampling turned our texture into floating point. To avoid this, might be able
 	// to declare them as isampler2D objects, but these require integer textures, which needs more work.
 	// Anyhow, we simply work around this by converting back to integer. Hopefully there will be no loss of precision.

GPU/Common/ShaderCommon.h

@@ -85,15 +85,16 @@ enum : uint64_t {
 	DIRTY_BONEMATRIX6 = 1ULL << 30,
 	DIRTY_BONEMATRIX7 = 1ULL << 31,
 
-	// These are for hardware tessellation
 	DIRTY_BEZIERSPLINE = 1ULL << 32,
 	DIRTY_TEXCLAMP = 1ULL << 33,
 
-	// space for 7 more uniforms.
+	DIRTY_DEPAL = 1ULL << 34,
+
+	// space for 5 more uniform dirty flags. Remember to update DIRTY_ALL_UNIFORMS.
 
 	DIRTY_BONE_UNIFORMS = 0xFF000000ULL,
 
-	DIRTY_ALL_UNIFORMS = 0x3FFFFFFFFULL,
+	DIRTY_ALL_UNIFORMS = 0x7FFFFFFFFULL,
 	DIRTY_ALL_LIGHTS = DIRTY_LIGHT0 | DIRTY_LIGHT1 | DIRTY_LIGHT2 | DIRTY_LIGHT3,
 
 	// Other dirty elements that aren't uniforms!

GPU/Common/ShaderId.cpp

@@ -171,6 +171,7 @@ std::string FragmentShaderDesc(const ShaderID &id) {
 	if (id.Bit(FS_BIT_COLOR_DOUBLE)) desc << "2x ";
 	if (id.Bit(FS_BIT_FLATSHADE)) desc << "Flat ";
 	if (id.Bit(FS_BIT_BGRA_TEXTURE)) desc << "BGRA ";
+	if (id.Bit(FS_BIT_SHADER_DEPAL)) desc << "Depal ";
 	if (id.Bit(FS_BIT_SHADER_TEX_CLAMP)) {
 		desc << "TClamp";
 		if (id.Bit(FS_BIT_CLAMP_S)) desc << "S";
@@ -236,6 +237,7 @@ void ComputeFragmentShaderID(ShaderID *id_out) {
 		bool doTextureProjection = (gstate.getUVGenMode() == GE_TEXMAP_TEXTURE_MATRIX && MatrixNeedsProjection(gstate.tgenMatrix));
 		bool doTextureAlpha = gstate.isTextureAlphaUsed();
 		bool doFlatShading = gstate.getShadeMode() == GE_SHADE_FLAT;
+		bool useShaderDepal = gstate_c.useShaderDepal;
 
 		ReplaceBlendType replaceBlend = ReplaceBlendWithShader(gstate_c.allowShaderBlend, gstate.FrameBufFormat());
 		ReplaceAlphaType stencilToAlpha = ReplaceAlphaWithStencil(replaceBlend);
@@ -299,6 +301,8 @@ void ComputeFragmentShaderID(ShaderID *id_out) {
 			id.SetBits(FS_BIT_BLENDFUNC_B, 4, gstate.getBlendFuncB());
 		}
 		id.SetBit(FS_BIT_FLATSHADE, doFlatShading);
+
+		id.SetBit(FS_BIT_SHADER_DEPAL, useShaderDepal);
 	}
 
 	*id_out = id;

GPU/Common/ShaderId.h

@@ -62,7 +62,7 @@ enum {
 	FS_BIT_DO_TEXTURE = 1,
 	FS_BIT_TEXFUNC = 2,  // 3 bits
 	FS_BIT_TEXALPHA = 5,
-	// 6 is free.
+	FS_BIT_SHADER_DEPAL = 6,
 	FS_BIT_SHADER_TEX_CLAMP = 7,
 	FS_BIT_CLAMP_S = 8,
 	FS_BIT_CLAMP_T = 9,

GPU/Common/ShaderUniforms.cpp

@@ -200,6 +200,17 @@ void BaseUpdateUniforms(UB_VS_FS_Base *ub, uint64_t dirtyUniforms, bool flipView
 	if (dirtyUniforms & DIRTY_BEZIERSPLINE) {
 		ub->spline_counts = BytesToUint32(gstate_c.spline_count_u, gstate_c.spline_count_v, gstate_c.spline_type_u, gstate_c.spline_type_v);
 	}
+
+	if (dirtyUniforms & DIRTY_DEPAL) {
+		int indexMask = gstate.getClutIndexMask();
+		int indexShift = gstate.getClutIndexShift();
+		int indexOffset = gstate.getClutIndexStartPos() >> 4;
+		int format = gstate_c.depalFramebufferFormat;
+		uint32_t val = BytesToUint32(indexMask, indexShift, indexOffset, format);
+		// Poke in a bilinear filter flag in the top bit.
+		val |= gstate.isMagnifyFilteringEnabled() << 31;
+		ub->depal_mask_shift_off_fmt = val;
+	}
 }
 
 void LightUpdateUniforms(UB_VS_Lights *ub, uint64_t dirtyUniforms) {

GPU/Common/ShaderUniforms.h

@@ -11,7 +11,7 @@ enum : uint64_t {
 	DIRTY_WORLDMATRIX | DIRTY_PROJTHROUGHMATRIX | DIRTY_VIEWMATRIX | DIRTY_TEXMATRIX | DIRTY_ALPHACOLORREF |
 	DIRTY_PROJMATRIX | DIRTY_FOGCOLOR | DIRTY_FOGCOEF | DIRTY_TEXENV | DIRTY_STENCILREPLACEVALUE |
 	DIRTY_ALPHACOLORMASK | DIRTY_SHADERBLEND | DIRTY_UVSCALEOFFSET | DIRTY_TEXCLAMP | DIRTY_DEPTHRANGE | DIRTY_MATAMBIENTALPHA |
-	DIRTY_BEZIERSPLINE,
+	DIRTY_BEZIERSPLINE | DIRTY_DEPAL,
 	DIRTY_LIGHT_UNIFORMS =
 	DIRTY_LIGHT0 | DIRTY_LIGHT1 | DIRTY_LIGHT2 | DIRTY_LIGHT3 |
 	DIRTY_MATDIFFUSE | DIRTY_MATSPECULAR | DIRTY_MATEMISSIVE | DIRTY_AMBIENT,
@@ -30,7 +30,8 @@ struct UB_VS_FS_Base {
 	float depthRange[4];
 	float fogCoef[2];	float stencil; float pad0;
 	float matAmbient[4];
-	uint32_t spline_counts; int pad1; int pad2; int pad3;
+	uint32_t spline_counts; uint32_t depal_mask_shift_off_fmt;  // 4 params packed into one.
+	int pad2; int pad3;
 	// Fragment data
 	float fogColor[4];
 	float texEnvColor[4];
@@ -54,7 +55,7 @@ R"(  mat4 proj_mtx;
   float stencilReplace;
   vec4 matambientalpha;
   uint spline_counts;
-  int pad1;
+  uint depal_mask_shift_off_fmt;
   int pad2;
   int pad3;
   vec3 fogcolor;
@@ -80,7 +81,7 @@ R"(  float4x4 u_proj;
   float u_stencilReplaceValue;
   float4 u_matambientalpha;
   uint u_spline_counts;
-  int pad1;
+  uint u_depal_mask_shift_off_fmt;
   int pad2;
   int pad3;
   float3 u_fogcolor;

GPU/GLES/FragmentShaderGeneratorGLES.cpp

@@ -157,6 +157,7 @@ bool GenerateFragmentShader(const FShaderID &id, char *buffer, uint64_t *uniform
 	bool doTextureProjection = id.Bit(FS_BIT_DO_TEXTURE_PROJ);
 	bool doTextureAlpha = id.Bit(FS_BIT_TEXALPHA);
 	bool doFlatShading = id.Bit(FS_BIT_FLATSHADE);
+	bool shaderDepal = id.Bit(FS_BIT_SHADER_DEPAL);
 
 	GEComparison alphaTestFunc = (GEComparison)id.Bits(FS_BIT_ALPHA_TEST_FUNC, 3);
 	GEComparison colorTestFunc = (GEComparison)id.Bits(FS_BIT_COLOR_TEST_FUNC, 2);
@@ -217,6 +218,12 @@ bool GenerateFragmentShader(const FShaderID &id, char *buffer, uint64_t *uniform
 		}
 	}
 
+	if (shaderDepal) {
+		WRITE(p, "uniform sampler2D pal;\n");
+		WRITE(p, "uniform int u_depal;\n");
+		*uniformMask |= DIRTY_DEPAL;
+	}
+
 	StencilValueType replaceAlphaWithStencilType = (StencilValueType)id.Bits(FS_BIT_REPLACE_ALPHA_WITH_STENCIL_TYPE, 4);
 	if (stencilToAlpha && replaceAlphaWithStencilType == STENCIL_VALUE_UNIFORM) {
 		*uniformMask |= DIRTY_STENCILREPLACEVALUE;
@@ -336,10 +343,95 @@ bool GenerateFragmentShader(const FShaderID &id, char *buffer, uint64_t *uniform
 
 			if (doTextureProjection) {
 				WRITE(p, "  vec4 t = %sProj(tex, %s);\n", texture, texcoord);
+				if (shaderDepal) {
+					WRITE(p, "  vec4 t1 = %sProjOffset(tex, %s, ivec2(1, 0));\n", texture, texcoord);
+					WRITE(p, "  vec4 t2 = %sProjOffset(tex, %s, ivec2(0, 1));\n", texture, texcoord);
+					WRITE(p, "  vec4 t3 = %sProjOffset(tex, %s, ivec2(1, 1));\n", texture, texcoord);
+				}
 			} else {
 				WRITE(p, "  vec4 t = %s(tex, %s.xy);\n", texture, texcoord);
+				if (shaderDepal) {
+					WRITE(p, "  vec4 t1 = %sOffset(tex, %s.xy, ivec2(1, 0));\n", texture, texcoord);
+					WRITE(p, "  vec4 t2 = %sOffset(tex, %s.xy, ivec2(0, 1));\n", texture, texcoord);
+					WRITE(p, "  vec4 t3 = %sOffset(tex, %s.xy, ivec2(1, 1));\n", texture, texcoord);
+				}
 			}
-			WRITE(p, "  vec4 p = v_color0;\n");
+
+			if (shaderDepal) {
+				WRITE(p, "  int depalMask = (u_depal & 0xFF);\n");
+				WRITE(p, "  int depalShift = ((u_depal >> 8) & 0xFF);\n");
+				WRITE(p, "  int depalOffset = (((u_depal >> 16) & 0xFF) << 4);\n");
+				WRITE(p, "  int depalFmt = ((u_depal >> 24) & 0x3);\n");
+				WRITE(p, "  bool bilinear = (u_depal >> 31) != 0;\n");
+				WRITE(p, "  vec2 fraction = fract(%s.xy * vec2(textureSize(tex, 0).xy));\n", texcoord);
+				WRITE(p, "  ivec4 col; int index0; int index1; int index2; int index3;\n");
+				WRITE(p, "  switch (depalFmt) {\n");  // We might want to include fmt in the shader ID if this is a performance issue.
+				WRITE(p, "  case 0:\n");  // 565
+				WRITE(p, "    col = ivec4(t.rgb * vec3(31.99, 63.99, 31.99), 0);\n");
+				WRITE(p, "    index0 = (col.b << 11) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "    if (bilinear) {\n");
+				WRITE(p, "      col = ivec4(t1.rgb * vec3(31.99, 63.99, 31.99), 0);\n");
+				WRITE(p, "      index1 = (col.b << 11) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t2.rgb * vec3(31.99, 63.99, 31.99), 0);\n");
+				WRITE(p, "      index2 = (col.b << 11) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t3.rgb * vec3(31.99, 63.99, 31.99), 0);\n");
+				WRITE(p, "      index3 = (col.b << 11) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "    }\n");
+				WRITE(p, "    break;\n");
+				WRITE(p, "  case 1:\n");  // 5551
+				WRITE(p, "    col = ivec4(t.rgba * vec4(31.99, 31.99, 31.99, 1.0));\n");
+				WRITE(p, "    index0 = (col.a << 15) | (col.b << 10) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "    if (bilinear) {\n");
+				WRITE(p, "      col = ivec4(t1.rgba * vec4(31.99, 31.99, 31.99, 1.0));\n");
+				WRITE(p, "      index1 = (col.a << 15) | (col.b << 10) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t2.rgba * vec4(31.99, 31.99, 31.99, 1.0));\n");
+				WRITE(p, "      index2 = (col.a << 15) | (col.b << 10) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t3.rgba * vec4(31.99, 31.99, 31.99, 1.0));\n");
+				WRITE(p, "      index3 = (col.a << 15) | (col.b << 10) | (col.g << 5) | (col.r);\n");
+				WRITE(p, "    }\n");
+				WRITE(p, "    break;\n");
+				WRITE(p, "  case 2:\n");  // 4444
+				WRITE(p, "    col = ivec4(t.rgba * vec4(15.99, 15.99, 15.99, 15.99));\n");
+				WRITE(p, "    index0 = (col.a << 12) | (col.b << 8) | (col.g << 4) | (col.r);\n");
+				WRITE(p, "    if (bilinear) {\n");
+				WRITE(p, "      col = ivec4(t1.rgba * vec4(15.99, 15.99, 15.99, 15.99));\n");
+				WRITE(p, "      index1 = (col.a << 12) | (col.b << 8) | (col.g << 4) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t2.rgba * vec4(15.99, 15.99, 15.99, 15.99));\n");
+				WRITE(p, "      index2 = (col.a << 12) | (col.b << 8) | (col.g << 4) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t3.rgba * vec4(15.99, 15.99, 15.99, 15.99));\n");
+				WRITE(p, "      index3 = (col.a << 12) | (col.b << 8) | (col.g << 4) | (col.r);\n");
+				WRITE(p, "    }\n");
+				WRITE(p, "    break;\n");
+				WRITE(p, "  case 3:\n");  // 8888
+				WRITE(p, "    col = ivec4(t.rgba * vec4(255.99, 255.99, 255.99, 255.99));\n");
+				WRITE(p, "    index0 = (col.a << 24) | (col.b << 16) | (col.g << 8) | (col.r);\n");
+				WRITE(p, "    if (bilinear) {\n");
+				WRITE(p, "      col = ivec4(t1.rgba * vec4(255.99, 255.99, 255.99, 255.99));\n");
+				WRITE(p, "      index1 = (col.a << 24) | (col.b << 16) | (col.g << 8) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t2.rgba * vec4(255.99, 255.99, 255.99, 255.99));\n");
+				WRITE(p, "      index2 = (col.a << 24) | (col.b << 16) | (col.g << 8) | (col.r);\n");
+				WRITE(p, "      col = ivec4(t3.rgba * vec4(255.99, 255.99, 255.99, 255.99));\n");
+				WRITE(p, "      index3 = (col.a << 24) | (col.b << 16) | (col.g << 8) | (col.r);\n");
+				WRITE(p, "    }\n");
+				WRITE(p, "    break;\n");
+				WRITE(p, "  };\n");
+				WRITE(p, "  index0 = ((index0 >> depalShift) & depalMask) | depalOffset;\n");
+				WRITE(p, "  t = texelFetch(pal, ivec2(index0, 0), 0);\n");
+				WRITE(p, "  if (bilinear) {\n");
+				WRITE(p, "    index1 = ((index1 >> depalShift) & depalMask) | depalOffset;\n");
+				WRITE(p, "    index2 = ((index2 >> depalShift) & depalMask) | depalOffset;\n");
+				WRITE(p, "    index3 = ((index3 >> depalShift) & depalMask) | depalOffset;\n");
+				WRITE(p, "    t1 = texelFetch(pal, ivec2(index1, 0), 0);\n");
+				WRITE(p, "    t2 = texelFetch(pal, ivec2(index2, 0), 0);\n");
+				WRITE(p, "    t3 = texelFetch(pal, ivec2(index3, 0), 0);\n");
+				WRITE(p, "    t = mix(t, t1, fraction.x);\n");
+				WRITE(p, "    t2 = mix(t2, t3, fraction.x);\n");
+				WRITE(p, "    t = mix(t, t2, fraction.y);\n");
+				WRITE(p, "  }\n");
+			}
+
+			if (texFunc != GE_TEXFUNC_REPLACE || !doTextureAlpha)
+				WRITE(p, "  vec4 p = v_color0;\n");
 
 			if (doTextureAlpha) { // texfmt == RGBA
 				switch (texFunc) {

GPU/GLES/ShaderManagerGLES.cpp

@@ -103,6 +103,7 @@ LinkedShader::LinkedShader(GLRenderManager *render, VShaderID VSID, Shader *vs,
 	queries.push_back({ &u_blendFixA, "u_blendFixA" });
 	queries.push_back({ &u_blendFixB, "u_blendFixB" });
 	queries.push_back({ &u_fbotexSize, "u_fbotexSize" });
+	queries.push_back({ &u_pal, "pal" });
 
 	// Transform
 	queries.push_back({ &u_view, "u_view" });
@@ -161,6 +162,7 @@ LinkedShader::LinkedShader(GLRenderManager *render, VShaderID VSID, Shader *vs,
 	queries.push_back({ &u_spline_count_v, "u_spline_count_v" });
 	queries.push_back({ &u_spline_type_u, "u_spline_type_u" });
 	queries.push_back({ &u_spline_type_v, "u_spline_type_v" });
+	queries.push_back({ &u_depal, "u_depal" });
 
 	attrMask = vs->GetAttrMask();
 	availableUniforms = vs->GetUniformMask() | fs->GetUniformMask();
@@ -169,6 +171,7 @@ LinkedShader::LinkedShader(GLRenderManager *render, VShaderID VSID, Shader *vs,
 	initialize.push_back({ &u_tex,          0, 0 });
 	initialize.push_back({ &u_fbotex,       0, 1 });
 	initialize.push_back({ &u_testtex,      0, 2 });
+	initialize.push_back({ &u_pal,          0, 3 }); // CLUT
 	initialize.push_back({ &u_tess_pos_tex, 0, 4 }); // Texture unit 4
 	initialize.push_back({ &u_tess_tex_tex, 0, 5 }); // Texture unit 5
 	initialize.push_back({ &u_tess_col_tex, 0, 6 }); // Texture unit 6
@@ -283,6 +286,17 @@ void LinkedShader::UpdateUniforms(u32 vertType, const ShaderID &vsid) {
 	if (!dirty)
 		return;
 
+	if (dirty & DIRTY_DEPAL) {
+		int indexMask = gstate.getClutIndexMask();
+		int indexShift = gstate.getClutIndexShift();
+		int indexOffset = gstate.getClutIndexStartPos() >> 4;
+		int format = gstate_c.depalFramebufferFormat;
+		uint32_t val = BytesToUint32(indexMask, indexShift, indexOffset, format);
+		// Poke in a bilinear filter flag in the top bit.
+		val |= gstate.isMagnifyFilteringEnabled() << 31;
+		render_->SetUniformI1(&u_depal, val);
+	}
+
 	// Update any dirty uniforms before we draw
 	if (dirty & DIRTY_PROJMATRIX) {
 		Matrix4x4 flippedMatrix;
@@ -810,7 +824,7 @@ std::string ShaderManagerGLES::DebugGetShaderString(std::string id, DebugShaderT
 // as sometimes these features might have an effect on the ID bits.
 
 #define CACHE_HEADER_MAGIC 0x83277592
-#define CACHE_VERSION 11
+#define CACHE_VERSION 12
 struct CacheHeader {
 	uint32_t magic;
 	uint32_t version;

GPU/GLES/ShaderManagerGLES.h

@@ -85,6 +85,10 @@ class LinkedShader {
 	int u_blendFixB;
 	int u_fbotexSize;
 
+	// Shader depal
+	int u_pal;  // the texture
+	int u_depal;  // the params
+
 	// Fragment processing inputs
 	int u_alphacolorref;
 	int u_alphacolormask;

GPU/GLES/TextureCacheGLES.cpp

@@ -161,7 +161,7 @@ void TextureCacheGLES::UpdateSamplingParams(TexCacheEntry &entry, bool force) {
 	render_->SetTextureSampler(0, sClamp ? GL_CLAMP_TO_EDGE : GL_REPEAT, tClamp ? GL_CLAMP_TO_EDGE : GL_REPEAT, MagFiltGL[magFilt], MinFiltGL[minFilt], aniso);
 }
 
-void TextureCacheGLES::SetFramebufferSamplingParams(u16 bufferWidth, u16 bufferHeight) {
+void TextureCacheGLES::SetFramebufferSamplingParams(u16 bufferWidth, u16 bufferHeight, bool forcePoint) {
 	int minFilt;
 	int magFilt;
 	bool sClamp;
@@ -171,6 +171,10 @@ void TextureCacheGLES::SetFramebufferSamplingParams(u16 bufferWidth, u16 bufferH
 	GetSamplingParams(minFilt, magFilt, sClamp, tClamp, lodBias, 0, 0, mode);
 
 	minFilt &= 1;  // framebuffers can't mipmap.
+	if (forcePoint) {
+		minFilt &= ~1;
+		magFilt &= ~1;
+	}
 
 	// Often the framebuffer will not match the texture size.  We'll wrap/clamp in the shader in that case.
 	// This happens whether we have OES_texture_npot or not.
@@ -324,6 +328,7 @@ void TextureCacheGLES::BindTexture(TexCacheEntry *entry) {
 		lastBoundTexture = entry->textureName;
 	}
 	UpdateSamplingParams(*entry, false);
+	gstate_c.useShaderDepal = false;
 }
 
 void TextureCacheGLES::Unbind() {
@@ -434,7 +439,33 @@ class TextureShaderApplier {
 void TextureCacheGLES::ApplyTextureFramebuffer(TexCacheEntry *entry, VirtualFramebuffer *framebuffer) {
 	DepalShader *depal = nullptr;
 	uint32_t clutMode = gstate.clutformat & 0xFFFFFF;
+
+#if 0
+	bool useShaderDepal = gstate_c.Supports(GPU_SUPPORTS_GLSL_ES_300);
+#else
+	bool useShaderDepal = false;
+#endif
+
 	if ((entry->status & TexCacheEntry::STATUS_DEPALETTIZE) && !g_Config.bDisableSlowFramebufEffects) {
+		if (useShaderDepal) {
+			const GEPaletteFormat clutFormat = gstate.getClutPaletteFormat();
+			GLRTexture *clutTexture = depalShaderCache_->GetClutTexture(clutFormat, clutHash_, clutBuf_);
+			render_->BindTexture(TEX_SLOT_CLUT, clutTexture);
+			framebufferManagerGL_->BindFramebufferAsColorTexture(0, framebuffer, BINDFBCOLOR_MAY_COPY_WITH_UV | BINDFBCOLOR_APPLY_TEX_OFFSET);
+			SetFramebufferSamplingParams(framebuffer->bufferWidth, framebuffer->bufferHeight, true);
+			InvalidateLastTexture();
+
+			// Since we started/ended render passes, might need these.
+			gstate_c.Dirty(DIRTY_DEPAL);
+			gstate_c.useShaderDepal = true;
+			gstate_c.depalFramebufferFormat = framebuffer->drawnFormat;
+			const u32 bytesPerColor = clutFormat == GE_CMODE_32BIT_ABGR8888 ? sizeof(u32) : sizeof(u16);
+			const u32 clutTotalColors = clutMaxBytes_ / bytesPerColor;
+			TexCacheEntry::TexStatus alphaStatus = CheckAlpha((const uint8_t *)clutBuf_, getClutDestFormat(clutFormat), clutTotalColors, clutTotalColors, 1);
+			gstate_c.SetTextureFullAlpha(alphaStatus == TexCacheEntry::STATUS_ALPHA_FULL);
+			return;
+		}
+
 		depal = depalShaderCache_->GetDepalettizeShader(clutMode, framebuffer->drawnFormat);
 	}
 	if (depal) {
@@ -472,7 +503,7 @@ void TextureCacheGLES::ApplyTextureFramebuffer(TexCacheEntry *entry, VirtualFram
 	}
 
 	framebufferManagerGL_->RebindFramebuffer();
-	SetFramebufferSamplingParams(framebuffer->bufferWidth, framebuffer->bufferHeight);
+	SetFramebufferSamplingParams(framebuffer->bufferWidth, framebuffer->bufferHeight, false);
 
 	InvalidateLastTexture();
 

GPU/GLES/TextureCacheGLES.h

@@ -63,7 +63,7 @@ class TextureCacheGLES : public TextureCacheCommon {
 		}
 	}
 
-	void SetFramebufferSamplingParams(u16 bufferWidth, u16 bufferHeight);
+	void SetFramebufferSamplingParams(u16 bufferWidth, u16 bufferHeight, bool forcePoint);
 	bool GetCurrentTextureDebug(GPUDebugBuffer &buffer, int level) override;
 
 	void DeviceLost();