Roll back current implementation

quakespasm/Quake/gl_draw.c

@@ -722,7 +722,7 @@ void GL_SetCanvas (canvastype newcanvas)
 		break;
 	case CANVAS_WARPIMAGE:
 		glOrtho (0, 128, 0, 128, -99999, 99999);
-		glViewport (0, vid.unscaled_height-gl_warpimagesize, gl_warpimagesize, gl_warpimagesize);
+		glViewport (glx, gly+glheight-gl_warpimagesize, gl_warpimagesize, gl_warpimagesize);
 		break;
 	case CANVAS_CROSSHAIR: //0,0 is center of viewport
 		s = CLAMP (1.0, scr_crosshairscale.value, 10.0);

quakespasm/Quake/gl_rmain.c

@@ -118,9 +118,9 @@ qboolean r_drawflat_cheatsafe, r_fullbright_cheatsafe, r_lightmap_cheatsafe, r_d
 //
 //==============================================================================
 
-static GLuint r_postprocess_texture;
+static GLuint r_gamma_texture;
 static GLuint r_gamma_program;
-static int r_postprocess_texture_width, r_postprocess_texture_height;
+static int r_gamma_texture_width, r_gamma_texture_height;
 
 // uniforms used in gamma shader
 static GLuint gammaLoc;
@@ -134,8 +134,8 @@ GLSLGamma_DeleteTexture
 */
 void GLSLGamma_DeleteTexture (void)
 {
-	glDeleteTextures (1, &r_postprocess_texture);
-	r_postprocess_texture = 0;
+	glDeleteTextures (1, &r_gamma_texture);
+	r_gamma_texture = 0;
 	r_gamma_program = 0; // deleted in R_DeleteShaders
 }
 
@@ -180,46 +180,41 @@ static void GLSLGamma_CreateShaders (void)
 
 /*
 =============
-R_Postprocess
- 
-Performs:
-- GLSL gamma correction (requires OpenGL 2.0)
-- framebuffer scaling (vid_scale) (any OpenGL version)
+GLSLGamma_GammaCorrect
 =============
 */
-void R_Postprocess (void)
+void GLSLGamma_GammaCorrect (void)
 {
-	qboolean wants_gamma, wants_scaling;
 	float smax, tmax;
 
-	wants_gamma = gl_glsl_gamma_able && (vid_gamma.value != 1 || vid_contrast.value != 1);
-	wants_scaling = (vid.unscaled_width != vid.width || vid.unscaled_height != vid.height);
-	
-	if (!wants_gamma && !wants_scaling)
+	if (!gl_glsl_gamma_able)
 		return;
-	
-// create render-to-texture texture if needed
-	if (!r_postprocess_texture)
-	{
-		glGenTextures (1, &r_postprocess_texture);
-		glBindTexture (GL_TEXTURE_2D, r_postprocess_texture);
 
-		r_postprocess_texture_width = glwidth;
-		r_postprocess_texture_height = glheight;
+	if (vid_gamma.value == 1 && vid_contrast.value == 1)
+		return;
+
+// create render-to-texture texture if needed
+	if (!r_gamma_texture)
+	{
+		glGenTextures (1, &r_gamma_texture);
+		glBindTexture (GL_TEXTURE_2D, r_gamma_texture);
+
+		r_gamma_texture_width = glwidth;
+		r_gamma_texture_height = glheight;
 
 		if (!gl_texture_NPOT)
 		{
-			r_postprocess_texture_width = TexMgr_Pad(r_postprocess_texture_width);
-			r_postprocess_texture_height = TexMgr_Pad(r_postprocess_texture_height);
+			r_gamma_texture_width = TexMgr_Pad(r_gamma_texture_width);
+			r_gamma_texture_height = TexMgr_Pad(r_gamma_texture_height);
 		}
 	
-		glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, r_postprocess_texture_width, r_postprocess_texture_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+		glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, r_gamma_texture_width, r_gamma_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
 		glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 		glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 	}
 
 // create shader if needed
-	if (wants_gamma && !r_gamma_program)
+	if (!r_gamma_program)
 	{
 		GLSLGamma_CreateShaders ();
 		if (!r_gamma_program)
@@ -230,29 +225,22 @@ void R_Postprocess (void)
 	
 // copy the framebuffer to the texture
 	GL_DisableMultitexture();
-	glBindTexture (GL_TEXTURE_2D, r_postprocess_texture);
+	glBindTexture (GL_TEXTURE_2D, r_gamma_texture);
 	glCopyTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, glx, gly, glwidth, glheight);
 
 // draw the texture back to the framebuffer with a fragment shader
-	if (wants_gamma)
-	{
-		GL_UseProgramFunc (r_gamma_program);
-		GL_Uniform1fFunc (gammaLoc, vid_gamma.value);
-		GL_Uniform1fFunc (contrastLoc, q_min(2.0, q_max(1.0, vid_contrast.value)));
-		GL_Uniform1iFunc (textureLoc, 0); // use texture unit 0
-	}
+	GL_UseProgramFunc (r_gamma_program);
+	GL_Uniform1fFunc (gammaLoc, vid_gamma.value);
+	GL_Uniform1fFunc (contrastLoc, q_min(2.0, q_max(1.0, vid_contrast.value)));
+	GL_Uniform1iFunc (textureLoc, 0); // use texture unit 0
 
 	glDisable (GL_ALPHA_TEST);
 	glDisable (GL_DEPTH_TEST);
 
-	glViewport (0, 0, vid.unscaled_width, vid.unscaled_height);
-	glMatrixMode (GL_PROJECTION);
-	glLoadIdentity ();
-	glMatrixMode (GL_MODELVIEW);
-	glLoadIdentity ();
+	glViewport (glx, gly, glwidth, glheight);
 
-	smax = glwidth/(float)r_postprocess_texture_width;
-	tmax = glheight/(float)r_postprocess_texture_height;
+	smax = glwidth/(float)r_gamma_texture_width;
+	tmax = glheight/(float)r_gamma_texture_height;
 
 	glBegin (GL_QUADS);
 	glTexCoord2f (0, 0);
@@ -265,11 +253,9 @@ void R_Postprocess (void)
 	glVertex2f (-1, 1);
 	glEnd ();
 	
-// unbind program if we enabled it
-	if (wants_gamma)
-		GL_UseProgramFunc (0);
+	GL_UseProgramFunc (0);
 	
-// clear cached texture binding
+// clear cached binding
 	GL_ClearBindings ();
 }
 

quakespasm/Quake/gl_screen.c

@@ -784,17 +784,17 @@ void SCR_ScreenShot_f (void)
 	}
 
 //get data
-	if (!(buffer = (byte *) malloc(vid.unscaled_width*vid.unscaled_height*3)))
+	if (!(buffer = (byte *) malloc(glwidth*glheight*3)))
 	{
 		Con_Printf ("SCR_ScreenShot_f: Couldn't allocate memory\n");
 		return;
 	}
 
 	glPixelStorei (GL_PACK_ALIGNMENT, 1);/* for widths that aren't a multiple of 4 */
-	glReadPixels (0, 0, vid.unscaled_width, vid.unscaled_height, GL_RGB, GL_UNSIGNED_BYTE, buffer);
+	glReadPixels (glx, gly, glwidth, glheight, GL_RGB, GL_UNSIGNED_BYTE, buffer);
 
 // now write the file
-	if (Image_WriteTGA (tganame, buffer, vid.unscaled_width, vid.unscaled_height, 24, false))
+	if (Image_WriteTGA (tganame, buffer, glwidth, glheight, 24, false))
 		Con_Printf ("Wrote %s\n", tganame);
 	else
 		Con_Printf ("SCR_ScreenShot_f: Couldn't create a TGA file\n");
@@ -1080,7 +1080,7 @@ void SCR_UpdateScreen (void)
 
 	V_UpdateBlend (); //johnfitz -- V_UpdatePalette cleaned up and renamed
 
-	R_Postprocess ();
+	GLSLGamma_GammaCorrect ();
 
 	GL_EndRendering ();
 }

quakespasm/Quake/gl_texmgr.c

@@ -563,9 +563,9 @@ void TexMgr_RecalcWarpImageSize (void)
 
 	gl_warpimagesize = TexMgr_SafeTextureSize (512);
 
-	while (gl_warpimagesize > vid.unscaled_width)
+	while (gl_warpimagesize > vid.width)
 		gl_warpimagesize >>= 1;
-	while (gl_warpimagesize > vid.unscaled_height)
+	while (gl_warpimagesize > vid.height)
 		gl_warpimagesize >>= 1;
 
 	// ericw -- removed early exit if (gl_warpimagesize == oldsize).

quakespasm/Quake/gl_vidsdl.c

@@ -154,7 +154,6 @@ static cvar_t	vid_borderless = {"vid_borderless", "0", CVAR_ARCHIVE}; // QuakeSp
 
 cvar_t		vid_gamma = {"gamma", "1", CVAR_ARCHIVE}; //johnfitz -- moved here from view.c
 cvar_t		vid_contrast = {"contrast", "1", CVAR_ARCHIVE}; //QuakeSpasm, MarkV
-cvar_t		vid_scale = {"vid_scale", "1", CVAR_ARCHIVE};	// QuakeSpasm
 
 //==========================================================================
 //
@@ -351,31 +350,6 @@ static int VID_GetCurrentHeight (void)
 #endif
 }
 
-/*
-=======================
-VID_CalcRenderSize
- 
-returns the size that we will render to, possilby smaller than the actual 
-framebuffer size if the vid_scale cvar is in use.
-=======================
-*/
-static void VID_GetRenderSize (int *w, int *h)
-{
-	float scale_factor;
-	
-#if defined(USE_SDL2)
-	SDL_GetWindowSize(draw_context, w, h);
-#else
-	*w = draw_context->w;
-	*h = draw_context->h;
-#endif
-	
-	scale_factor = 1.0f / CLAMP(1, (int)vid_scale.value, 4);
-	
-	*w *= scale_factor;
-	*h *= scale_factor;
-}
-
 /*
 ====================
 VID_GetCurrentBPP
@@ -693,9 +667,8 @@ static qboolean VID_SetMode (int width, int height, int bpp, qboolean fullscreen
 	SDL_WM_SetCaption(caption, caption);
 #endif /* !defined(USE_SDL2) */
 
-	VID_GetRenderSize(&vid.width, &vid.height);
-	vid.unscaled_width = VID_GetCurrentWidth();
-	vid.unscaled_height = VID_GetCurrentHeight();
+	vid.width = VID_GetCurrentWidth();
+	vid.height = VID_GetCurrentHeight();
 	vid.conwidth = vid.width & 0xFFFFFFF8;
 	vid.conheight = vid.conwidth * vid.height / vid.width;
 	vid.numpages = 2;
@@ -1536,8 +1509,7 @@ void	VID_Init (void)
 					 "vid_vsync",
 					 "vid_fsaa",
 					 "vid_desktopfullscreen",
-					 "vid_borderless",
-					 "vid_scale"};
+					 "vid_borderless"};
 #define num_readvars	( sizeof(read_vars)/sizeof(read_vars[0]) )
 
 	Cvar_RegisterVariable (&vid_fullscreen); //johnfitz
@@ -1548,7 +1520,6 @@ void	VID_Init (void)
 	Cvar_RegisterVariable (&vid_fsaa); //QuakeSpasm
 	Cvar_RegisterVariable (&vid_desktopfullscreen); //QuakeSpasm
 	Cvar_RegisterVariable (&vid_borderless); //QuakeSpasm
-	Cvar_RegisterVariable (&vid_scale); //QuakeSpasm
 	Cvar_SetCallback (&vid_fullscreen, VID_Changed_f);
 	Cvar_SetCallback (&vid_width, VID_Changed_f);
 	Cvar_SetCallback (&vid_height, VID_Changed_f);
@@ -1557,7 +1528,6 @@ void	VID_Init (void)
 	Cvar_SetCallback (&vid_fsaa, VID_FSAA_f);
 	Cvar_SetCallback (&vid_desktopfullscreen, VID_Changed_f);
 	Cvar_SetCallback (&vid_borderless, VID_Changed_f);
-	Cvar_SetCallback (&vid_scale, VID_Changed_f);
 	
 	Cmd_AddCommand ("vid_unlock", VID_Unlock); //johnfitz
 	Cmd_AddCommand ("vid_restart", VID_Restart); //johnfitz

quakespasm/Quake/gl_warp.c

@@ -255,7 +255,7 @@ void R_UpdateWarpTextures (void)
 
 		//copy to texture
 		GL_Bind (tx->warpimage);
-		glCopyTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 0, vid.unscaled_height-gl_warpimagesize, gl_warpimagesize, gl_warpimagesize);
+		glCopyTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, glx, gly+glheight-gl_warpimagesize, gl_warpimagesize, gl_warpimagesize);
 
 		tx->update_warp = false;
 	}
@@ -264,7 +264,7 @@ void R_UpdateWarpTextures (void)
 	GL_SetCanvas(CANVAS_DEFAULT);
 
 	//if warp render went down into sbar territory, we need to be sure to refresh it next frame
-	if (gl_warpimagesize + sb_lines > vid.unscaled_height)
+	if (gl_warpimagesize + sb_lines > glheight)
 		Sbar_Changed ();
 
 	//if viewsize is less than 100, we need to redraw the frame around the viewport

quakespasm/Quake/glquake.h

@@ -393,7 +393,7 @@ void GL_BindBuffer (GLenum target, GLuint buffer);
 void GL_ClearBufferBindings ();
 
 void GLSLGamma_DeleteTexture (void);
-void R_Postprocess (void);
+void GLSLGamma_GammaCorrect (void);
 
 float GL_WaterAlphaForSurface (msurface_t *fa);
 

quakespasm/Quake/vid.h

@@ -54,8 +54,6 @@ typedef struct
 	int		rowbytes;	// may be > width if displayed in a window
 	int		width;
 	int		height;
-	int		unscaled_width;
-	int		unscaled_height;
 	float		aspect;		// width / height -- < 0 is taller than wide
 	int		numpages;
 	int		recalc_refdef;	// if true, recalc vid-based stuff