diff --git a/src/platform/opengl/gl.c b/src/platform/opengl/gl.c
index 0b438e22d..51bb64365 100644
--- a/src/platform/opengl/gl.c
+++ b/src/platform/opengl/gl.c
@@ -21,9 +21,9 @@ static const GLint _glTexCoords[] = {
 	0, 1
 };
 
-static void GBAGLContextInit(struct VideoBackend* v, WHandle handle) {
+static void mGLContextInit(struct VideoBackend* v, WHandle handle) {
 	UNUSED(handle);
-	struct GBAGLContext* context = (struct GBAGLContext*) v;
+	struct mGLContext* context = (struct mGLContext*) v;
 	glGenTextures(1, &context->tex);
 	glBindTexture(GL_TEXTURE_2D, context->tex);
 	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
@@ -33,8 +33,8 @@ static void GBAGLContextInit(struct VideoBackend* v, WHandle handle) {
 #endif
 }
 
-static void GBAGLContextSetDimensions(struct VideoBackend* v, unsigned width, unsigned height) {
-	struct GBAGLContext* context = (struct GBAGLContext*) v;
+static void mGLContextSetDimensions(struct VideoBackend* v, unsigned width, unsigned height) {
+	struct mGLContext* context = (struct mGLContext*) v;
 	v->width = width;
 	v->height = height;
 
@@ -50,12 +50,12 @@ static void GBAGLContextSetDimensions(struct VideoBackend* v, unsigned width, un
 #endif
 }
 
-static void GBAGLContextDeinit(struct VideoBackend* v) {
-	struct GBAGLContext* context = (struct GBAGLContext*) v;
+static void mGLContextDeinit(struct VideoBackend* v) {
+	struct mGLContext* context = (struct mGLContext*) v;
 	glDeleteTextures(1, &context->tex);
 }
 
-static void GBAGLContextResized(struct VideoBackend* v, unsigned w, unsigned h) {
+static void mGLContextResized(struct VideoBackend* v, unsigned w, unsigned h) {
 	unsigned drawW = w;
 	unsigned drawH = h;
 	if (v->lockAspectRatio) {
@@ -72,14 +72,14 @@ static void GBAGLContextResized(struct VideoBackend* v, unsigned w, unsigned h)
 	glViewport((w - drawW) / 2, (h - drawH) / 2, drawW, drawH);
 }
 
-static void GBAGLContextClear(struct VideoBackend* v) {
+static void mGLContextClear(struct VideoBackend* v) {
 	UNUSED(v);
 	glClearColor(0, 0, 0, 0);
 	glClear(GL_COLOR_BUFFER_BIT);
 }
 
-void GBAGLContextDrawFrame(struct VideoBackend* v) {
-	struct GBAGLContext* context = (struct GBAGLContext*) v;
+void mGLContextDrawFrame(struct VideoBackend* v) {
+	struct mGLContext* context = (struct mGLContext*) v;
 	glEnable(GL_TEXTURE_2D);
 	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 	glEnableClientState(GL_VERTEX_ARRAY);
@@ -101,8 +101,8 @@ void GBAGLContextDrawFrame(struct VideoBackend* v) {
 	glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
 }
 
-void GBAGLContextPostFrame(struct VideoBackend* v, const void* frame) {
-	struct GBAGLContext* context = (struct GBAGLContext*) v;
+void mGLContextPostFrame(struct VideoBackend* v, const void* frame) {
+	struct mGLContext* context = (struct mGLContext*) v;
 	glBindTexture(GL_TEXTURE_2D, context->tex);
 #ifdef COLOR_16_BIT
 #ifdef COLOR_5_6_5
@@ -115,15 +115,15 @@ void GBAGLContextPostFrame(struct VideoBackend* v, const void* frame) {
 #endif
 }
 
-void GBAGLContextCreate(struct GBAGLContext* context) {
-	context->d.init = GBAGLContextInit;
-	context->d.deinit = GBAGLContextDeinit;
-	context->d.setDimensions = GBAGLContextSetDimensions;
-	context->d.resized = GBAGLContextResized;
+void mGLContextCreate(struct mGLContext* context) {
+	context->d.init = mGLContextInit;
+	context->d.deinit = mGLContextDeinit;
+	context->d.setDimensions = mGLContextSetDimensions;
+	context->d.resized = mGLContextResized;
 	context->d.swap = 0;
-	context->d.clear = GBAGLContextClear;
-	context->d.postFrame = GBAGLContextPostFrame;
-	context->d.drawFrame = GBAGLContextDrawFrame;
+	context->d.clear = mGLContextClear;
+	context->d.postFrame = mGLContextPostFrame;
+	context->d.drawFrame = mGLContextDrawFrame;
 	context->d.setMessage = 0;
 	context->d.clearMessage = 0;
 }
diff --git a/src/platform/opengl/gl.h b/src/platform/opengl/gl.h
index 3a4e212c9..be360e0c9 100644
--- a/src/platform/opengl/gl.h
+++ b/src/platform/opengl/gl.h
@@ -16,12 +16,12 @@
 
 #include "platform/video-backend.h"
 
-struct GBAGLContext {
+struct mGLContext {
 	struct VideoBackend d;
 
 	GLuint tex;
 };
 
-void GBAGLContextCreate(struct GBAGLContext*);
+void mGLContextCreate(struct mGLContext*);
 
 #endif
diff --git a/src/platform/opengl/gles2.c b/src/platform/opengl/gles2.c
index 980e2eb3e..07d7b3317 100644
--- a/src/platform/opengl/gles2.c
+++ b/src/platform/opengl/gles2.c
@@ -71,9 +71,9 @@ static const GLfloat _vertices[] = {
 	1.f, -1.f,
 };
 
-static void GBAGLES2ContextInit(struct VideoBackend* v, WHandle handle) {
+static void mGLES2ContextInit(struct VideoBackend* v, WHandle handle) {
 	UNUSED(handle);
-	struct GBAGLES2Context* context = (struct GBAGLES2Context*) v;
+	struct mGLES2Context* context = (struct mGLES2Context*) v;
 	glGenTextures(1, &context->tex);
 	glBindTexture(GL_TEXTURE_2D, context->tex);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
@@ -81,7 +81,7 @@ static void GBAGLES2ContextInit(struct VideoBackend* v, WHandle handle) {
 
 	glClearColor(0.f, 0.f, 0.f, 1.f);
 
-	struct GBAGLES2Uniform* uniforms = malloc(sizeof(struct GBAGLES2Uniform) * 4);
+	struct mGLES2Uniform* uniforms = malloc(sizeof(struct mGLES2Uniform) * 4);
 	uniforms[0].name = "gamma";
 	uniforms[0].readableName = "Gamma";
 	uniforms[0].type = GL_FLOAT;
@@ -124,16 +124,16 @@ static void GBAGLES2ContextInit(struct VideoBackend* v, WHandle handle) {
 	uniforms[3].max.fvec3[0] = 1.0f;
 	uniforms[3].max.fvec3[1] = 1.0f;
 	uniforms[3].max.fvec3[2] = 1.0f;
-	GBAGLES2ShaderInit(&context->initialShader, _vertexShader, _fragmentShader, -1, -1, false, uniforms, 4);
-	GBAGLES2ShaderInit(&context->finalShader, 0, 0, 0, 0, false, 0, 0);
+	mGLES2ShaderInit(&context->initialShader, _vertexShader, _fragmentShader, -1, -1, false, uniforms, 4);
+	mGLES2ShaderInit(&context->finalShader, 0, 0, 0, 0, false, 0, 0);
 	glDeleteFramebuffers(1, &context->finalShader.fbo);
 	glDeleteTextures(1, &context->finalShader.tex);
 	context->finalShader.fbo = 0;
 	context->finalShader.tex = 0;
 }
 
-static void GBAGLES2ContextSetDimensions(struct VideoBackend* v, unsigned width, unsigned height) {
-	struct GBAGLES2Context* context = (struct GBAGLES2Context*) v;
+static void mGLES2ContextSetDimensions(struct VideoBackend* v, unsigned width, unsigned height) {
+	struct mGLES2Context* context = (struct mGLES2Context*) v;
 	v->width = width;
 	v->height = height;
 
@@ -149,15 +149,15 @@ static void GBAGLES2ContextSetDimensions(struct VideoBackend* v, unsigned width,
 #endif
 }
 
-static void GBAGLES2ContextDeinit(struct VideoBackend* v) {
-	struct GBAGLES2Context* context = (struct GBAGLES2Context*) v;
+static void mGLES2ContextDeinit(struct VideoBackend* v) {
+	struct mGLES2Context* context = (struct mGLES2Context*) v;
 	glDeleteTextures(1, &context->tex);
-	GBAGLES2ShaderDeinit(&context->initialShader);
-	GBAGLES2ShaderDeinit(&context->finalShader);
+	mGLES2ShaderDeinit(&context->initialShader);
+	mGLES2ShaderDeinit(&context->finalShader);
 	free(context->initialShader.uniforms);
 }
 
-static void GBAGLES2ContextResized(struct VideoBackend* v, unsigned w, unsigned h) {
+static void mGLES2ContextResized(struct VideoBackend* v, unsigned w, unsigned h) {
 	unsigned drawW = w;
 	unsigned drawH = h;
 	if (v->lockAspectRatio) {
@@ -173,13 +173,13 @@ static void GBAGLES2ContextResized(struct VideoBackend* v, unsigned w, unsigned
 	glViewport((w - drawW) / 2, (h - drawH) / 2, drawW, drawH);
 }
 
-static void GBAGLES2ContextClear(struct VideoBackend* v) {
+static void mGLES2ContextClear(struct VideoBackend* v) {
 	UNUSED(v);
 	glClearColor(0.f, 0.f, 0.f, 1.f);
 	glClear(GL_COLOR_BUFFER_BIT);
 }
 
-void _drawShader(struct GBAGLES2Context* context, struct GBAGLES2Shader* shader) {
+void _drawShader(struct mGLES2Context* context, struct mGLES2Shader* shader) {
 	GLint viewport[4];
 	glBindFramebuffer(GL_FRAMEBUFFER, shader->fbo);
 	if (shader->blend) {
@@ -230,7 +230,7 @@ void _drawShader(struct GBAGLES2Context* context, struct GBAGLES2Shader* shader)
 	glEnableVertexAttribArray(shader->positionLocation);
 	size_t u;
 	for (u = 0; u < shader->nUniforms; ++u) {
-		struct GBAGLES2Uniform* uniform = &shader->uniforms[u];
+		struct mGLES2Uniform* uniform = &shader->uniforms[u];
 		switch (uniform->type) {
 		case GL_FLOAT:
 			glUniform1f(uniform->location, uniform->value.f);
@@ -284,8 +284,8 @@ void _drawShader(struct GBAGLES2Context* context, struct GBAGLES2Shader* shader)
 	glViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
 }
 
-void GBAGLES2ContextDrawFrame(struct VideoBackend* v) {
-	struct GBAGLES2Context* context = (struct GBAGLES2Context*) v;
+void mGLES2ContextDrawFrame(struct VideoBackend* v) {
+	struct mGLES2Context* context = (struct mGLES2Context*) v;
 	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(GL_TEXTURE_2D, context->tex);
 
@@ -300,8 +300,8 @@ void GBAGLES2ContextDrawFrame(struct VideoBackend* v) {
 	glUseProgram(0);
 }
 
-void GBAGLES2ContextPostFrame(struct VideoBackend* v, const void* frame) {
-	struct GBAGLES2Context* context = (struct GBAGLES2Context*) v;
+void mGLES2ContextPostFrame(struct VideoBackend* v, const void* frame) {
+	struct mGLES2Context* context = (struct mGLES2Context*) v;
 	glBindTexture(GL_TEXTURE_2D, context->tex);
 #ifdef COLOR_16_BIT
 #ifdef COLOR_5_6_5
@@ -314,22 +314,22 @@ void GBAGLES2ContextPostFrame(struct VideoBackend* v, const void* frame) {
 #endif
 }
 
-void GBAGLES2ContextCreate(struct GBAGLES2Context* context) {
-	context->d.init = GBAGLES2ContextInit;
-	context->d.deinit = GBAGLES2ContextDeinit;
-	context->d.setDimensions = GBAGLES2ContextSetDimensions;
-	context->d.resized = GBAGLES2ContextResized;
+void mGLES2ContextCreate(struct mGLES2Context* context) {
+	context->d.init = mGLES2ContextInit;
+	context->d.deinit = mGLES2ContextDeinit;
+	context->d.setDimensions = mGLES2ContextSetDimensions;
+	context->d.resized = mGLES2ContextResized;
 	context->d.swap = 0;
-	context->d.clear = GBAGLES2ContextClear;
-	context->d.postFrame = GBAGLES2ContextPostFrame;
-	context->d.drawFrame = GBAGLES2ContextDrawFrame;
+	context->d.clear = mGLES2ContextClear;
+	context->d.postFrame = mGLES2ContextPostFrame;
+	context->d.drawFrame = mGLES2ContextDrawFrame;
 	context->d.setMessage = 0;
 	context->d.clearMessage = 0;
 	context->shaders = 0;
 	context->nShaders = 0;
 }
 
-void GBAGLES2ShaderInit(struct GBAGLES2Shader* shader, const char* vs, const char* fs, int width, int height, bool integerScaling, struct GBAGLES2Uniform* uniforms, size_t nUniforms) {
+void mGLES2ShaderInit(struct mGLES2Shader* shader, const char* vs, const char* fs, int width, int height, bool integerScaling, struct mGLES2Uniform* uniforms, size_t nUniforms) {
 	shader->width = width;
 	shader->height = height;
 	shader->integerScaling = integerScaling;
@@ -403,19 +403,19 @@ void GBAGLES2ShaderInit(struct GBAGLES2Shader* shader, const char* vs, const cha
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
-void GBAGLES2ShaderDeinit(struct GBAGLES2Shader* shader) {
+void mGLES2ShaderDeinit(struct mGLES2Shader* shader) {
 	glDeleteTextures(1, &shader->tex);
 	glDeleteShader(shader->fragmentShader);
 	glDeleteProgram(shader->program);
 	glDeleteFramebuffers(1, &shader->fbo);
 }
 
-void GBAGLES2ShaderAttach(struct GBAGLES2Context* context, struct GBAGLES2Shader* shaders, size_t nShaders) {
+void mGLES2ShaderAttach(struct mGLES2Context* context, struct mGLES2Shader* shaders, size_t nShaders) {
 	if (context->shaders) {
 		if (context->shaders == shaders && context->nShaders == nShaders) {
 			return;
 		}
-		GBAGLES2ShaderDetach(context);
+		mGLES2ShaderDetach(context);
 	}
 	context->shaders = shaders;
 	context->nShaders = nShaders;
@@ -427,7 +427,7 @@ void GBAGLES2ShaderAttach(struct GBAGLES2Context* context, struct GBAGLES2Shader
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
-void GBAGLES2ShaderDetach(struct GBAGLES2Context* context) {
+void mGLES2ShaderDetach(struct mGLES2Context* context) {
 	if (!context->shaders) {
 		return;
 	}
@@ -485,22 +485,22 @@ static bool _lookupBoolValue(const struct Configuration* config, const char* sec
 	return true;
 }
 
-DECLARE_VECTOR(GBAGLES2UniformList, struct GBAGLES2Uniform);
-DEFINE_VECTOR(GBAGLES2UniformList, struct GBAGLES2Uniform);
+DECLARE_VECTOR(mGLES2UniformList, struct mGLES2Uniform);
+DEFINE_VECTOR(mGLES2UniformList, struct mGLES2Uniform);
 
 static void _uniformHandler(const char* sectionName, void* user) {
-	struct GBAGLES2UniformList* uniforms = user;
+	struct mGLES2UniformList* uniforms = user;
 	unsigned passId;
 	int sentinel;
 	if (sscanf(sectionName, "pass.%u.uniform.%n", &passId, &sentinel) < 1) {
 		return;
 	}
-	struct GBAGLES2Uniform* u = GBAGLES2UniformListAppend(uniforms);
+	struct mGLES2Uniform* u = mGLES2UniformListAppend(uniforms);
 	u->name = sectionName;
 }
 
 
-static void _loadValue(struct Configuration* description, const char* name, GLenum type, const char* field, union GBAGLES2UniformValue* value) {
+static void _loadValue(struct Configuration* description, const char* name, GLenum type, const char* field, union mGLES2UniformValue* value) {
 	char fieldName[16];
 	switch (type) {
 	case GL_FLOAT:
@@ -710,7 +710,7 @@ static void _loadValue(struct Configuration* description, const char* name, GLen
 	}
 }
 
-static bool _loadUniform(struct Configuration* description, size_t pass, struct GBAGLES2Uniform* uniform) {
+static bool _loadUniform(struct Configuration* description, size_t pass, struct mGLES2Uniform* uniform) {
 	unsigned passId;
 	if (sscanf(uniform->name, "pass.%u.uniform.", &passId) < 1 || passId != pass) {
 		return false;
@@ -765,7 +765,7 @@ static bool _loadUniform(struct Configuration* description, size_t pass, struct
 	return true;
 }
 
-bool GBAGLES2ShaderLoad(struct VideoShader* shader, struct VDir* dir) {
+bool mGLES2ShaderLoad(struct VideoShader* shader, struct VDir* dir) {
 	struct VFile* manifest = dir->openFile(dir, "manifest.ini", O_RDONLY);
 	if (!manifest) {
 		return false;
@@ -780,7 +780,7 @@ bool GBAGLES2ShaderLoad(struct VideoShader* shader, struct VDir* dir) {
 			success = false;
 		}
 		if (success) {
-			struct GBAGLES2Shader* shaderBlock = malloc(sizeof(struct GBAGLES2Shader) * inShaders);
+			struct mGLES2Shader* shaderBlock = malloc(sizeof(struct mGLES2Shader) * inShaders);
 			int n;
 			for (n = 0; n < inShaders; ++n) {
 				char passName[12];
@@ -827,23 +827,23 @@ bool GBAGLES2ShaderLoad(struct VideoShader* shader, struct VDir* dir) {
 				_lookupIntValue(&description, passName, "height", &height);
 				_lookupIntValue(&description, passName, "integerScaling", &scaling);
 
-				struct GBAGLES2UniformList uniformVector;
-				GBAGLES2UniformListInit(&uniformVector, 0);
+				struct mGLES2UniformList uniformVector;
+				mGLES2UniformListInit(&uniformVector, 0);
 				ConfigurationEnumerateSections(&description, _uniformHandler, &uniformVector);
 				size_t u;
-				for (u = 0; u < GBAGLES2UniformListSize(&uniformVector); ++u) {
-					struct GBAGLES2Uniform* uniform = GBAGLES2UniformListGetPointer(&uniformVector, u);
+				for (u = 0; u < mGLES2UniformListSize(&uniformVector); ++u) {
+					struct mGLES2Uniform* uniform = mGLES2UniformListGetPointer(&uniformVector, u);
 					if (!_loadUniform(&description, n, uniform)) {
-						GBAGLES2UniformListShift(&uniformVector, u, 1);
+						mGLES2UniformListShift(&uniformVector, u, 1);
 						--u;
 					}
 				}
-				u = GBAGLES2UniformListSize(&uniformVector);
-				struct GBAGLES2Uniform* uniformBlock = malloc(sizeof(*uniformBlock) * u);
-				memcpy(uniformBlock, GBAGLES2UniformListGetPointer(&uniformVector, 0), sizeof(*uniformBlock) * u);
-				GBAGLES2UniformListDeinit(&uniformVector);
+				u = mGLES2UniformListSize(&uniformVector);
+				struct mGLES2Uniform* uniformBlock = malloc(sizeof(*uniformBlock) * u);
+				memcpy(uniformBlock, mGLES2UniformListGetPointer(&uniformVector, 0), sizeof(*uniformBlock) * u);
+				mGLES2UniformListDeinit(&uniformVector);
 
-				GBAGLES2ShaderInit(&shaderBlock[n], vssrc, fssrc, width, height, scaling, uniformBlock, u);
+				mGLES2ShaderInit(&shaderBlock[n], vssrc, fssrc, width, height, scaling, uniformBlock, u);
 				int b = 0;
 				_lookupIntValue(&description, passName, "blend", &b);
 				if (b) {
@@ -875,7 +875,7 @@ bool GBAGLES2ShaderLoad(struct VideoShader* shader, struct VDir* dir) {
 			} else {
 				inShaders = n;
 				for (n = 0; n < inShaders; ++n) {
-					GBAGLES2ShaderDeinit(&shaderBlock[n]);
+					mGLES2ShaderDeinit(&shaderBlock[n]);
 				}
 			}
 		}
@@ -884,17 +884,17 @@ bool GBAGLES2ShaderLoad(struct VideoShader* shader, struct VDir* dir) {
 	return success;
 }
 
-void GBAGLES2ShaderFree(struct VideoShader* shader) {
+void mGLES2ShaderFree(struct VideoShader* shader) {
 	free((void*) shader->name);
 	free((void*) shader->author);
 	free((void*) shader->description);
 	shader->name = 0;
 	shader->author = 0;
 	shader->description = 0;
-	struct GBAGLES2Shader* shaders = shader->passes;
+	struct mGLES2Shader* shaders = shader->passes;
 	size_t n;
 	for (n = 0; n < shader->nPasses; ++n) {
-		GBAGLES2ShaderDeinit(&shaders[n]);
+		mGLES2ShaderDeinit(&shaders[n]);
 		size_t u;
 		for (u = 0; u < shaders[n].nUniforms; ++u) {
 			free((void*) shaders[n].uniforms[u].name);
diff --git a/src/platform/opengl/gles2.h b/src/platform/opengl/gles2.h
index ef91790a5..510580861 100644
--- a/src/platform/opengl/gles2.h
+++ b/src/platform/opengl/gles2.h
@@ -22,7 +22,7 @@
 
 #include "platform/video-backend.h"
 
-union GBAGLES2UniformValue {
+union mGLES2UniformValue {
 	GLfloat f;
 	GLint i;
 	GLboolean b;
@@ -40,17 +40,17 @@ union GBAGLES2UniformValue {
 	GLfloat fmat4x4[16];
 };
 
-struct GBAGLES2Uniform {
+struct mGLES2Uniform {
 	const char* name;
 	GLenum type;
-	union GBAGLES2UniformValue value;
+	union mGLES2UniformValue value;
 	GLuint location;
-	union GBAGLES2UniformValue min;
-	union GBAGLES2UniformValue max;
+	union mGLES2UniformValue min;
+	union mGLES2UniformValue max;
 	const char* readableName;
 };
 
-struct GBAGLES2Shader {
+struct mGLES2Shader {
 	int width;
 	int height;
 	bool integerScaling;
@@ -64,33 +64,33 @@ struct GBAGLES2Shader {
 	GLuint texLocation;
 	GLuint positionLocation;
 
-	struct GBAGLES2Uniform* uniforms;
+	struct mGLES2Uniform* uniforms;
 	size_t nUniforms;
 };
 
-struct GBAGLES2Context {
+struct mGLES2Context {
 	struct VideoBackend d;
 
 	GLuint tex;
 	GLuint texLocation;
 	GLuint positionLocation;
 
-	struct GBAGLES2Shader initialShader;
-	struct GBAGLES2Shader finalShader;
+	struct mGLES2Shader initialShader;
+	struct mGLES2Shader finalShader;
 
-	struct GBAGLES2Shader* shaders;
+	struct mGLES2Shader* shaders;
 	size_t nShaders;
 };
 
-void GBAGLES2ContextCreate(struct GBAGLES2Context*);
+void mGLES2ContextCreate(struct mGLES2Context*);
 
-void GBAGLES2ShaderInit(struct GBAGLES2Shader*, const char* vs, const char* fs, int width, int height, bool integerScaling, struct GBAGLES2Uniform* uniforms, size_t nUniforms);
-void GBAGLES2ShaderDeinit(struct GBAGLES2Shader*);
-void GBAGLES2ShaderAttach(struct GBAGLES2Context*, struct GBAGLES2Shader*, size_t nShaders);
-void GBAGLES2ShaderDetach(struct GBAGLES2Context*);
+void mGLES2ShaderInit(struct mGLES2Shader*, const char* vs, const char* fs, int width, int height, bool integerScaling, struct mGLES2Uniform* uniforms, size_t nUniforms);
+void mGLES2ShaderDeinit(struct mGLES2Shader*);
+void mGLES2ShaderAttach(struct mGLES2Context*, struct mGLES2Shader*, size_t nShaders);
+void mGLES2ShaderDetach(struct mGLES2Context*);
 
 struct VDir;
-bool GBAGLES2ShaderLoad(struct VideoShader*, struct VDir*);
-void GBAGLES2ShaderFree(struct VideoShader*);
+bool mGLES2ShaderLoad(struct VideoShader*, struct VDir*);
+void mGLES2ShaderFree(struct VideoShader*);
 
 #endif
diff --git a/src/platform/qt/DisplayGL.cpp b/src/platform/qt/DisplayGL.cpp
index 4a9b854b4..169b0b958 100644
--- a/src/platform/qt/DisplayGL.cpp
+++ b/src/platform/qt/DisplayGL.cpp
@@ -189,16 +189,16 @@ PainterGL::PainterGL(QGLWidget* parent, QGLFormat::OpenGLVersionFlags glVersion)
 	, m_messagePainter(nullptr)
 {
 #ifdef BUILD_GL
-	GBAGLContext* glBackend;
+	mGLContext* glBackend;
 #endif
 #if !defined(_WIN32) || defined(USE_EPOXY)
-	GBAGLES2Context* gl2Backend;
+	mGLES2Context* gl2Backend;
 #endif
 
 #if !defined(_WIN32) || defined(USE_EPOXY)
 	if (glVersion & (QGLFormat::OpenGL_Version_3_0 | QGLFormat::OpenGL_ES_Version_2_0)) {
-		gl2Backend = new GBAGLES2Context;
-		GBAGLES2ContextCreate(gl2Backend);
+		gl2Backend = new mGLES2Context;
+		mGLES2ContextCreate(gl2Backend);
 		m_backend = &gl2Backend->d;
 		m_supportsShaders = true;
 	}
@@ -206,8 +206,8 @@ PainterGL::PainterGL(QGLWidget* parent, QGLFormat::OpenGLVersionFlags glVersion)
 
 #ifdef BUILD_GL
 	 if (!m_backend) {
-		glBackend = new GBAGLContext;
-		GBAGLContextCreate(glBackend);
+		glBackend = new mGLContext;
+		mGLContextCreate(glBackend);
 		m_backend = &glBackend->d;
 		m_supportsShaders = false;
 	}
@@ -224,7 +224,7 @@ PainterGL::PainterGL(QGLWidget* parent, QGLFormat::OpenGLVersionFlags glVersion)
 	m_backend->init(m_backend, reinterpret_cast<WHandle>(m_gl->winId()));
 #if !defined(_WIN32) || defined(USE_EPOXY)
 	if (m_supportsShaders) {
-		m_shader.preprocessShader = static_cast<void*>(&reinterpret_cast<GBAGLES2Context*>(m_backend)->initialShader);
+		m_shader.preprocessShader = static_cast<void*>(&reinterpret_cast<mGLES2Context*>(m_backend)->initialShader);
 	}
 #endif
 	m_gl->doneCurrent();
@@ -251,7 +251,7 @@ PainterGL::~PainterGL() {
 #endif
 #if !defined(_WIN32) || defined(USE_EPOXY)
 	if (m_shader.passes) {
-		GBAGLES2ShaderFree(&m_shader);
+		mGLES2ShaderFree(&m_shader);
 	}
 #endif
 	m_backend->deinit(m_backend);
@@ -310,7 +310,7 @@ void PainterGL::start() {
 
 #if !defined(_WIN32) || defined(USE_EPOXY)
 	if (m_supportsShaders && m_shader.passes) {
-		GBAGLES2ShaderAttach(reinterpret_cast<GBAGLES2Context*>(m_backend), static_cast<GBAGLES2Shader*>(m_shader.passes), m_shader.nPasses);
+		mGLES2ShaderAttach(reinterpret_cast<mGLES2Context*>(m_backend), static_cast<mGLES2Shader*>(m_shader.passes), m_shader.nPasses);
 	}
 #endif
 
@@ -429,12 +429,12 @@ void PainterGL::setShaders(struct VDir* dir) {
 	epoxy_handle_external_wglMakeCurrent();
 #endif
 	if (m_shader.passes) {
-		GBAGLES2ShaderDetach(reinterpret_cast<GBAGLES2Context*>(m_backend));
-		GBAGLES2ShaderFree(&m_shader);
+		mGLES2ShaderDetach(reinterpret_cast<mGLES2Context*>(m_backend));
+		mGLES2ShaderFree(&m_shader);
 	}
-	GBAGLES2ShaderLoad(&m_shader, dir);
+	mGLES2ShaderLoad(&m_shader, dir);
 	if (m_started) {
-		GBAGLES2ShaderAttach(reinterpret_cast<GBAGLES2Context*>(m_backend), static_cast<GBAGLES2Shader*>(m_shader.passes), m_shader.nPasses);
+		mGLES2ShaderAttach(reinterpret_cast<mGLES2Context*>(m_backend), static_cast<mGLES2Shader*>(m_shader.passes), m_shader.nPasses);
 	}
 	m_gl->doneCurrent();
 #endif
@@ -450,8 +450,8 @@ void PainterGL::clearShaders() {
 	epoxy_handle_external_wglMakeCurrent();
 #endif
 	if (m_shader.passes) {
-		GBAGLES2ShaderDetach(reinterpret_cast<GBAGLES2Context*>(m_backend));
-		GBAGLES2ShaderFree(&m_shader);
+		mGLES2ShaderDetach(reinterpret_cast<mGLES2Context*>(m_backend));
+		mGLES2ShaderFree(&m_shader);
 	}
 	m_gl->doneCurrent();
 #endif
diff --git a/src/platform/qt/ShaderSelector.cpp b/src/platform/qt/ShaderSelector.cpp
index 253303132..94aa16a87 100644
--- a/src/platform/qt/ShaderSelector.cpp
+++ b/src/platform/qt/ShaderSelector.cpp
@@ -118,9 +118,9 @@ void ShaderSelector::refreshShaders() {
 
 #if !defined(_WIN32) || defined(USE_EPOXY)
 	if (m_shaders->preprocessShader) {
-		m_ui.passes->addTab(makePage(static_cast<GBAGLES2Shader*>(m_shaders->preprocessShader), "default", 0), tr("Preprocessing"));
+		m_ui.passes->addTab(makePage(static_cast<mGLES2Shader*>(m_shaders->preprocessShader), "default", 0), tr("Preprocessing"));
 	}
-	GBAGLES2Shader* shaders = static_cast<GBAGLES2Shader*>(m_shaders->passes);
+	mGLES2Shader* shaders = static_cast<mGLES2Shader*>(m_shaders->passes);
 	QFileInfo fi(m_shaderPath);
 	for (size_t p = 0; p < m_shaders->nPasses; ++p) {
 		QWidget* page = makePage(&shaders[p], fi.baseName(), p);
@@ -200,7 +200,7 @@ void ShaderSelector::addUniform(QGridLayout* settings, const QString& section, c
 	});
 }
 
-QWidget* ShaderSelector::makePage(GBAGLES2Shader* shader, const QString& name, int pass) {
+QWidget* ShaderSelector::makePage(mGLES2Shader* shader, const QString& name, int pass) {
 	if (!shader->nUniforms) {
 		return nullptr;
 	}
@@ -209,7 +209,7 @@ QWidget* ShaderSelector::makePage(GBAGLES2Shader* shader, const QString& name, i
 	page->setLayout(layout);
 	for (size_t u = 0 ; u < shader->nUniforms; ++u) {
 		QGridLayout* settings = new QGridLayout;
-		GBAGLES2Uniform* uniform = &shader->uniforms[u];
+		mGLES2Uniform* uniform = &shader->uniforms[u];
 		QString section = QString("shader.%1.%2").arg(name).arg(pass);
 		QString name = QLatin1String(uniform->name);
 		switch (uniform->type) {
diff --git a/src/platform/qt/ShaderSelector.h b/src/platform/qt/ShaderSelector.h
index ae43a2512..76a166f85 100644
--- a/src/platform/qt/ShaderSelector.h
+++ b/src/platform/qt/ShaderSelector.h
@@ -10,7 +10,7 @@
 
 #include "ui_ShaderSelector.h"
 
-struct GBAGLES2Shader;
+struct mGLES2Shader;
 class QGridLayout;
 struct VideoShader;
 
@@ -44,7 +44,7 @@ signals:
 private:
 	void addUniform(QGridLayout*, const QString& section, const QString& name, float* value, float min, float max, int y, int x);
 	void addUniform(QGridLayout*, const QString& section, const QString& name, int* value, int min, int max, int y, int x);
-	QWidget* makePage(GBAGLES2Shader*, const QString& name, int pass);
+	QWidget* makePage(mGLES2Shader*, const QString& name, int pass);
 
 	Ui::ShaderSelector m_ui;
 	Display* m_display;
diff --git a/src/platform/qt/Window.cpp b/src/platform/qt/Window.cpp
index 4b4820a8d..ce8c41688 100644
--- a/src/platform/qt/Window.cpp
+++ b/src/platform/qt/Window.cpp
@@ -101,13 +101,15 @@ Window::Window(ConfigController* config, int playerId, QWidget* parent)
 	connect(m_controller, SIGNAL(gameStopped(mCoreThread*)), &m_inputController, SLOT(resumeScreensaver()));
 	connect(m_controller, SIGNAL(stateLoaded(mCoreThread*)), m_display, SLOT(forceDraw()));
 	connect(m_controller, SIGNAL(rewound(mCoreThread*)), m_display, SLOT(forceDraw()));
-	connect(m_controller, &GameController::gamePaused, [this]() {
-		QImage currentImage(reinterpret_cast<const uchar*>(m_controller->drawContext()), VIDEO_HORIZONTAL_PIXELS,
-		                    VIDEO_VERTICAL_PIXELS, VIDEO_HORIZONTAL_PIXELS * BYTES_PER_PIXEL, QImage::Format_RGBX8888);
+	connect(m_controller, &GameController::gamePaused, [this](mCoreThread* context) {
+		unsigned width, height;
+		context->core->desiredVideoDimensions(context->core, &width, &height);
+		QImage currentImage(reinterpret_cast<const uchar*>(m_controller->drawContext()), width, height,
+		                    width * BYTES_PER_PIXEL, QImage::Format_RGBX8888);
 		QPixmap pixmap;
 		pixmap.convertFromImage(currentImage);
 		m_screenWidget->setPixmap(pixmap);
-		m_screenWidget->setLockAspectRatio(3, 2);
+		m_screenWidget->setLockAspectRatio(width, height);
 	});
 	connect(m_controller, SIGNAL(gamePaused(mCoreThread*)), m_display, SLOT(pauseDrawing()));
 #ifndef Q_OS_MAC
diff --git a/src/platform/sdl/gl-sdl.c b/src/platform/sdl/gl-sdl.c
index 5521ee48f..0a34b7600 100644
--- a/src/platform/sdl/gl-sdl.c
+++ b/src/platform/sdl/gl-sdl.c
@@ -11,8 +11,6 @@
 #include "core/thread.h"
 #include "platform/opengl/gl.h"
 
-#define GB_GBA_CENTER ((VIDEO_HORIZONTAL_PIXELS - GB_VIDEO_HORIZONTAL_PIXELS + VIDEO_HORIZONTAL_PIXELS * (VIDEO_VERTICAL_PIXELS - GB_VIDEO_VERTICAL_PIXELS)) / 2)
-
 static void _doViewport(int w, int h, struct VideoBackend* v) {
 	v->resized(v, w, h);
 	v->clear(v);
@@ -37,7 +35,7 @@ bool mSDLGLInit(struct mSDLRenderer* renderer) {
 	memset(renderer->outputBuffer, 0, renderer->width * renderer->height * BYTES_PER_PIXEL);
 	renderer->core->setVideoBuffer(renderer->core, renderer->outputBuffer, renderer->width);
 
-	GBAGLContextCreate(&renderer->gl);
+	mGLContextCreate(&renderer->gl);
 	renderer->gl.d.user = renderer;
 	renderer->gl.d.lockAspectRatio = renderer->lockAspectRatio;
 	renderer->gl.d.filter = renderer->filter;
diff --git a/src/platform/sdl/gles2-sdl.c b/src/platform/sdl/gles2-sdl.c
index 5d41e3ef5..355a5a5a8 100644
--- a/src/platform/sdl/gles2-sdl.c
+++ b/src/platform/sdl/gles2-sdl.c
@@ -96,7 +96,7 @@ bool mSDLGLES2Init(struct SDLSoftwareRenderer* renderer) {
 	renderer->d.outputBuffer = memalign(16, VIDEO_HORIZONTAL_PIXELS * VIDEO_VERTICAL_PIXELS * 4);
 	renderer->d.outputBufferStride = VIDEO_HORIZONTAL_PIXELS;
 
-	GBAGLES2ContextCreate(&renderer->gl2);
+	mGLES2ContextCreate(&renderer->gl2);
 	renderer->gl2.d.user = renderer;
 	renderer->gl2.d.lockAspectRatio = renderer->lockAspectRatio;
 	renderer->gl2.d.filter = renderer->filter;
diff --git a/src/platform/sdl/main.h b/src/platform/sdl/main.h
index 67ce4e494..ccfb052a5 100644
--- a/src/platform/sdl/main.h
+++ b/src/platform/sdl/main.h
@@ -72,10 +72,10 @@ struct mSDLRenderer {
 	bool filter;
 
 #ifdef BUILD_GL
-	struct GBAGLContext gl;
+	struct mGLContext gl;
 #endif
 #if defined(BUILD_GLES2) || defined(USE_EPOXY)
-	struct GBAGLES2Context gl2;
+	struct mGLES2Context gl2;
 #endif
 
 #ifdef USE_PIXMAN