Correct GPU_DrawArray() parameter order, fix GPU examples

examples/graphics/gpu/geoshader/source/main.c

@@ -83,7 +83,7 @@ static void sceneRender(void)
 	GPU_SetFloatUniformMatrix(GPU_GEOMETRY_SHADER, uLoc_projection, &projection);
 
 	// Draw the VBO - GPU_UNKPRIM allows the geoshader to control primitive emission
-	GPU_DrawArray(GPU_UNKPRIM, vertex_list_count);
+	GPU_DrawArray(GPU_UNKPRIM, 0, vertex_list_count);
 }
 
 static void sceneExit(void)

examples/graphics/gpu/simple_tri/source/main.c

@@ -76,7 +76,7 @@ static void sceneRender(void)
 	GPU_SetFloatUniformMatrix(GPU_VERTEX_SHADER, uLoc_projection, &projection);
 
 	// Draw the VBO
-	GPU_DrawArray(GPU_TRIANGLES, vertex_list_count);
+	GPU_DrawArray(GPU_TRIANGLES, 0, vertex_list_count);
 }
 
 static void sceneExit(void)

examples/graphics/gpu/textured_cube/source/main.c

@@ -186,7 +186,7 @@ static void sceneRender(void)
 	GPU_SetFloatUniform(GPU_VERTEX_SHADER, uLoc_lightClr,     (u32*)(float[]){1.0f,  1.0f, 1.0f, 1.0f}, 1);
 
 	// Draw the VBO
-	GPU_DrawArray(GPU_TRIANGLES, vertex_list_count);
+	GPU_DrawArray(GPU_TRIANGLES, 0, vertex_list_count);
 }
 
 static void sceneExit(void)

libctru/include/3ds/gpu/gpu.h

@@ -294,7 +294,7 @@ void GPU_SetTexture(GPU_TEXUNIT unit, u32* data, u16 width, u16 height, u32 para
 void GPU_SetTextureBorderColor(GPU_TEXUNIT unit,u32 borderColor);
 void GPU_SetTexEnv(u8 id, u16 rgbSources, u16 alphaSources, u16 rgbOperands, u16 alphaOperands, GPU_COMBINEFUNC rgbCombine, GPU_COMBINEFUNC alphaCombine, u32 constantColor);
 
-void GPU_DrawArray(GPU_Primitive_t primitive, u32 n, u32 first);
+void GPU_DrawArray(GPU_Primitive_t primitive, u32 first, u32 count);
 void GPU_DrawElements(GPU_Primitive_t primitive, u32* indexArray, u32 n);
 void GPU_FinishDrawing();
 

libctru/source/gpu/gpu.c

@@ -485,7 +485,7 @@ void GPU_SetTexEnv(u8 id, u16 rgbSources, u16 alphaSources, u16 rgbOperands, u16
 	GPUCMD_AddIncrementalWrites(GPUREG_0000|GPU_TEVID[id], param, 0x00000005);
 }
 
-void GPU_DrawArray(GPU_Primitive_t primitive, u32 n, u32 first)
+void GPU_DrawArray(GPU_Primitive_t primitive, u32 first, u32 count)
 {
 	//set primitive type
 	GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 0x2, primitive);
@@ -493,7 +493,7 @@ void GPU_DrawArray(GPU_Primitive_t primitive, u32 n, u32 first)
 	//index buffer address register should be cleared (except bit 31) before drawing
 	GPUCMD_AddWrite(GPUREG_INDEXBUFFER_CONFIG, 0x80000000);
 	//pass number of vertices
-	GPUCMD_AddWrite(GPUREG_NUMVERTICES, n);
+	GPUCMD_AddWrite(GPUREG_NUMVERTICES, count);
 	//set first vertex
 	GPUCMD_AddWrite(GPUREG_DRAW_VERTEX_OFFSET, first);