gl1,gl3,gl4,vk: Sync LM size

Need to search way to dynamically change prefered lightmap texture
size and sync LM caching structures and code.

internal_format is always GL_LIGHTMAP_FORMAT so just directly use
constant instead set to variable.

src/client/refresh/gl1/gl1_lightmap.c

@@ -71,8 +71,7 @@ LM_UploadBlock(qboolean dynamic)
 	}
 	else
 	{
-		gl_lms.internal_format = GL_LIGHTMAP_FORMAT;
-		glTexImage2D(GL_TEXTURE_2D, 0, gl_lms.internal_format,
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_LIGHTMAP_FORMAT,
 				BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_LIGHTMAP_FORMAT,
 				GL_UNSIGNED_BYTE, gl_lms.lightmap_buffer);
 
@@ -287,13 +286,12 @@ LM_BeginBuildingLightmaps(model_t *m)
 	}
 
 	gl_lms.current_lightmap_texture = 1;
-	gl_lms.internal_format = GL_LIGHTMAP_FORMAT;
 
 	/* initialize the dynamic lightmap texture */
 	R_Bind(gl_state.lightmap_textures + 0);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-	glTexImage2D(GL_TEXTURE_2D, 0, gl_lms.internal_format,
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_LIGHTMAP_FORMAT,
 			BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_LIGHTMAP_FORMAT,
 			GL_UNSIGNED_BYTE, dummy);
 }

src/client/refresh/gl1/header/local.h

@@ -62,11 +62,8 @@
 #define TEXNUM_IMAGES 1153
 #define MAX_GLTEXTURES 1024
 #define MAX_SCRAPS 1
-#define BLOCK_WIDTH 128
-#define BLOCK_HEIGHT 128
 #define REF_VERSION "Yamagi Quake II OpenGL Refresher"
 #define BACKFACE_EPSILON 0.01
-#define LIGHTMAP_BYTES 4
 #define MAX_LIGHTMAPS 256
 #define GL_LIGHTMAP_FORMAT GL_RGBA
 
@@ -334,7 +331,6 @@ typedef struct
 
 typedef struct
 {
-	int internal_format;
 	int current_lightmap_texture;
 
 	msurface_t *lightmap_surfaces[MAX_LIGHTMAPS];

src/client/refresh/gl3/gl3_lightmap.c

@@ -56,8 +56,7 @@ GL3_LM_UploadBlock(void)
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
-		gl3_lms.internal_format = GL_LIGHTMAP_FORMAT;
-		glTexImage2D(GL_TEXTURE_2D, 0, gl3_lms.internal_format,
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_LIGHTMAP_FORMAT,
 		             BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_LIGHTMAP_FORMAT,
 		             GL_UNSIGNED_BYTE, gl3_lms.lightmap_buffers[map]);
 	}
@@ -256,7 +255,6 @@ GL3_LM_BeginBuildingLightmaps(gl3model_t *m)
 	gl3_newrefdef.lightstyles = lightstyles;
 
 	gl3_lms.current_lightmap_texture = 0;
-	gl3_lms.internal_format = GL_LIGHTMAP_FORMAT;
 
 	// Note: the dynamic lightmap used to be initialized here, we don't use that anymore.
 }

src/client/refresh/gl3/header/local.h

@@ -186,11 +186,6 @@ typedef struct
 } gl3UniLights_t;
 
 enum {
-	// width and height used to be 128, so now we should be able to get the same lightmap data
-	// that used 32 lightmaps before into one, so 4 lightmaps should be enough
-	BLOCK_WIDTH = 1024,
-	BLOCK_HEIGHT = 512,
-	LIGHTMAP_BYTES = 4,
 	MAX_LIGHTMAPS = 4,
 	MAX_LIGHTMAPS_PER_SURFACE = MAXLIGHTMAPS // 4
 };
@@ -317,7 +312,6 @@ enum {MAX_GL3TEXTURES = 1024};
 
 typedef struct
 {
-	int internal_format;
 	int current_lightmap_texture; // index into gl3state.lightmap_textureIDs[]
 
 	//msurface_t *lightmap_surfaces[MAX_LIGHTMAPS]; - no more lightmap chains, lightmaps are rendered multitextured

src/client/refresh/gl4/gl4_lightmap.c

@@ -56,8 +56,7 @@ GL4_LM_UploadBlock(void)
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
-		gl4_lms.internal_format = GL_LIGHTMAP_FORMAT;
-		glTexImage2D(GL_TEXTURE_2D, 0, gl4_lms.internal_format,
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_LIGHTMAP_FORMAT,
 		             BLOCK_WIDTH, BLOCK_HEIGHT, 0, GL_LIGHTMAP_FORMAT,
 		             GL_UNSIGNED_BYTE, gl4_lms.lightmap_buffers[map]);
 	}
@@ -256,7 +255,6 @@ GL4_LM_BeginBuildingLightmaps(gl4model_t *m)
 	gl4_newrefdef.lightstyles = lightstyles;
 
 	gl4_lms.current_lightmap_texture = 0;
-	gl4_lms.internal_format = GL_LIGHTMAP_FORMAT;
 
 	// Note: the dynamic lightmap used to be initialized here, we don't use that anymore.
 }

src/client/refresh/gl4/header/local.h

@@ -186,11 +186,6 @@ typedef struct
 } gl4UniLights_t;
 
 enum {
-	// width and height used to be 128, so now we should be able to get the same lightmap data
-	// that used 32 lightmaps before into one, so 4 lightmaps should be enough
-	BLOCK_WIDTH = 1024,
-	BLOCK_HEIGHT = 512,
-	LIGHTMAP_BYTES = 4,
 	MAX_LIGHTMAPS = 4,
 	MAX_LIGHTMAPS_PER_SURFACE = MAXLIGHTMAPS // 4
 };
@@ -319,7 +314,6 @@ enum {MAX_GL4TEXTURES = 1024};
 
 typedef struct
 {
-	int internal_format;
 	int current_lightmap_texture; // index into gl4state.lightmap_textureIDs[]
 
 	//msurface_t *lightmap_surfaces[MAX_LIGHTMAPS]; - no more lightmap chains, lightmaps are rendered multitextured

src/client/refresh/ref_shared.h

@@ -271,6 +271,14 @@ typedef struct msurface_s
 	struct surfcache_s	*cachespots[MIPLEVELS]; /* surface generation data */
 } msurface_t;
 
+enum {
+	// width and height used to be 128, so now we should be able to get the same lightmap data
+	// that used 32 lightmaps before into one, so 4 lightmaps should be enough
+	BLOCK_WIDTH = 1024,
+	BLOCK_HEIGHT = 512,
+	LIGHTMAP_BYTES = 4,
+};
+
 /* BSPX Light octtree */
 #define LGNODE_LEAF		(1u<<31)
 #define LGNODE_MISSING	(1u<<30)

src/client/refresh/vk/header/local.h

@@ -279,9 +279,6 @@ typedef struct
 #define MAX_LIGHTMAPS 256
 #define DYNLIGHTMAP_OFFSET MAX_LIGHTMAPS
 
-#define	BLOCK_WIDTH		128
-#define	BLOCK_HEIGHT	128
-
 typedef struct
 {
 	int	current_lightmap_texture;

src/client/refresh/vk/vk_lightmap.c

@@ -27,8 +27,6 @@
 
 #include "header/local.h"
 
-#define LIGHTMAP_BYTES 4
-
 void
 LM_InitBlock(void)
 {