OpenGL2: Remove per fragment tangent space calculation code.

code/renderergl2/tr_local.h

@@ -55,8 +55,6 @@ typedef unsigned int glIndex_t;
 #define MAX_DRAWN_PSHADOWS    16 // do not increase past 32, because bit flags are used on surfaces
 #define PSHADOW_MAP_SIZE      512
 
-#define USE_VERT_TANGENT_SPACE
-
 typedef struct cubemap_s {
 	char name[MAX_QPATH];
 	vec3_t origin;
@@ -894,9 +892,7 @@ typedef struct
 	vec2_t          st;
 	vec2_t          lightmap;
 	int16_t         normal[4];
-#ifdef USE_VERT_TANGENT_SPACE
 	int16_t         tangent[4];
-#endif
 	int16_t         lightdir[4];
 	vec4_t			vertexColors;
 
@@ -905,11 +901,7 @@ typedef struct
 #endif
 } srfVert_t;
 
-#ifdef USE_VERT_TANGENT_SPACE
 #define srfVert_t_cleared(x) srfVert_t (x) = {{0, 0, 0}, {0, 0}, {0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}
-#else
-#define srfVert_t_cleared(x) srfVert_t (x) = {{0, 0, 0}, {0, 0}, {0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}, {0, 0, 0, 0}}
-#endif
 
 // srfBspSurface_t covers SF_GRID, SF_TRIANGLES, SF_POLY, and SF_VAO_MESH
 typedef struct srfBspSurface_s
@@ -1200,9 +1192,7 @@ typedef struct
 {
 	vec3_t          xyz;
 	int16_t         normal[4];
-#ifdef USE_VERT_TANGENT_SPACE
 	int16_t         tangent[4];
-#endif
 } mdvVertex_t;
 
 typedef struct
@@ -2002,9 +1992,7 @@ typedef struct shaderCommands_s
 	glIndex_t	indexes[SHADER_MAX_INDEXES] QALIGN(16);
 	vec4_t		xyz[SHADER_MAX_VERTEXES] QALIGN(16);
 	int16_t		normal[SHADER_MAX_VERTEXES][4] QALIGN(16);
-#ifdef USE_VERT_TANGENT_SPACE
 	int16_t		tangent[SHADER_MAX_VERTEXES][4] QALIGN(16);
-#endif
 	vec2_t		texCoords[SHADER_MAX_VERTEXES][2] QALIGN(16);
 	vec4_t		vertexColors[SHADER_MAX_VERTEXES] QALIGN(16);
 	int16_t		lightdir[SHADER_MAX_VERTEXES][4] QALIGN(16);