progress on updating sokol backend & demo

backend/sokol/backend_sokol.odin

@@ -12,12 +12,12 @@ Context :: struct {
 	atlas_shader  : gfx.Shader,
 	screen_shader : gfx.Shader,
 
-	// 2k x 512, R8
+	// ve.glyph_buffer.(width, height), R8
 	glyph_rt_color   : gfx.Image,
 	glyph_rt_depth   : gfx.Image,
 	glyph_rt_sampler : gfx.Sampler,
 
-	// 4k x 2k, R8
+	// ve.atlas.(width, height), R8
 	atlas_rt_color   : gfx.Image,
 	atlas_rt_depth   : gfx.Image,
 	atlas_rt_sampler : gfx.Sampler,
@@ -33,7 +33,6 @@ Context :: struct {
 
 setup_gfx_objects :: proc( ctx : ^Context, ve_ctx : ^ve.Context, vert_cap, index_cap : u64 )
 {
-	using ctx
 	Attachment_Desc            :: gfx.Attachment_Desc
 	Blend_Factor               :: gfx.Blend_Factor
 	Blend_Op                   :: gfx.Blend_Op
@@ -60,18 +59,18 @@ setup_gfx_objects :: proc( ctx : ^Context, ve_ctx : ^ve.Context, vert_cap, index
 	backend := gfx.query_backend()
 	app_env := glue.environment()
 
-	glyph_shader  = gfx.make_shader(render_glyph_shader_desc(backend) )
-	atlas_shader  = gfx.make_shader(blit_atlas_shader_desc(backend) )
-	screen_shader = gfx.make_shader(draw_text_shader_desc(backend) )
+	ctx.glyph_shader  = gfx.make_shader(render_glyph_shader_desc(backend) )
+	ctx.atlas_shader  = gfx.make_shader(blit_atlas_shader_desc(backend) )
+	ctx.screen_shader = gfx.make_shader(ve_draw_text_shader_desc(backend) )
 
-	draw_list_vbuf = gfx.make_buffer( Buffer_Desciption {
+	ctx.draw_list_vbuf = gfx.make_buffer( Buffer_Desciption {
 		size  = cast(uint)(size_of([4]f32) * vert_cap),
 		usage = Buffer_Usage.STREAM,
 		type  = Buffer_Type.VERTEXBUFFER,
 	})
-	assert( gfx.query_buffer_state( draw_list_vbuf) < Resource_State.FAILED, "Failed to make draw_list_vbuf" )
+	assert( gfx.query_buffer_state( ctx.draw_list_vbuf) < Resource_State.FAILED, "Failed to make draw_list_vbuf" )
 
-	draw_list_ibuf = gfx.make_buffer( Buffer_Desciption {
+	ctx.draw_list_ibuf = gfx.make_buffer( Buffer_Desciption {
 		size  = cast(uint)(size_of(u32) * index_cap),
 		usage = Buffer_Usage.STREAM,
 		type  = Buffer_Type.INDEXBUFFER,
@@ -305,8 +304,8 @@ setup_gfx_objects :: proc( ctx : ^Context, ve_ctx : ^ve.Context, vert_cap, index
 			mipmap_filter  = Filter.NEAREST,
 			wrap_u         = .CLAMP_TO_EDGE,
 			wrap_v         = .CLAMP_TO_EDGE,
-			min_lod        = -1000.0,
-			max_lod        =  1000.0,
+			min_lod        = -1.0,
+			max_lod        =  1.0,
 			border_color   = Border_Color.OPAQUE_BLACK,
 			compare        = .NEVER,
 			max_anisotropy = 1,
@@ -534,8 +533,12 @@ render_text_layer :: proc( screen_extent : ve.Vec2, ve_ctx : ^ve.Context, ctx :
 
 				gfx.apply_pipeline( atlas_pipeline )
 
-				fs_uniform := Blit_Atlas_Fs_Params { region = cast(i32) draw_call.region }
-				gfx.apply_uniforms( UB_blit_atlas_fs_params, Range { & fs_uniform, size_of(Blit_Atlas_Fs_Params) })
+				fs_uniform := Ve_Blit_Atlas_Fs_Params {
+					glyph_buffer_size = glyph_buf_size,
+					over_sample       = glyph_buffer.over_sample.x,
+					region            = cast(i32) draw_call.region,
+				}
+				gfx.apply_uniforms( UB_ve_blit_atlas_fs_params, Range { & fs_uniform, size_of(Ve_Blit_Atlas_Fs_Params) })
 
 				gfx.apply_bindings(Bindings {
 					vertex_buffers = {
@@ -546,8 +549,8 @@ render_text_layer :: proc( screen_extent : ve.Vec2, ve_ctx : ^ve.Context, ctx :
 					},
 					index_buffer        = draw_list_ibuf,
 					index_buffer_offset = 0,
-					images   = { IMG_blit_atlas_src_texture = glyph_rt_color, },
-					samplers = { SMP_blit_atlas_src_sampler = glyph_rt_sampler, },
+					images              = { IMG_ve_blit_atlas_src_texture = glyph_rt_color,   },
+					samplers            = { SMP_ve_blit_atlas_src_sampler = glyph_rt_sampler, },
 				})
 
 			// 3. Use the atlas to then render the text.
@@ -570,17 +573,18 @@ render_text_layer :: proc( screen_extent : ve.Vec2, ve_ctx : ^ve.Context, ctx :
 				src_rt      := atlas_rt_color
 				src_sampler := atlas_rt_sampler
 
-				fs_target_uniform := Draw_Text_Fs_Params {
-					down_sample = 0,
+				fs_target_uniform := Ve_Draw_Text_Fs_Params {
+					// glyph_buffer_size = glyph_buf_size,
+					over_sample       = glyph_buffer.over_sample.x,
 					colour            = draw_call.colour,
 				}
 
 				if draw_call.pass == .Target_Uncached {
-					fs_target_uniform.down_sample = 1
+					// fs_target_uniform.over_sample = 1.0
 					src_rt      = glyph_rt_color
 					src_sampler = glyph_rt_sampler
 				}
-				gfx.apply_uniforms( UB_draw_text_fs_params, Range { & fs_target_uniform, size_of(Draw_Text_Fs_Params) })
+				gfx.apply_uniforms( UB_ve_draw_text_fs_params, Range { & fs_target_uniform, size_of(Ve_Draw_Text_Fs_Params) })
 
 				gfx.apply_bindings(Bindings {
 					vertex_buffers = {
@@ -591,8 +595,8 @@ render_text_layer :: proc( screen_extent : ve.Vec2, ve_ctx : ^ve.Context, ctx :
 					},
 					index_buffer        = draw_list_ibuf,
 					index_buffer_offset = 0,
-					images   = { IMG_draw_text_src_texture = src_rt, },
-					samplers = { SMP_draw_text_src_sampler = src_sampler, },
+					images              = { IMG_ve_draw_text_src_texture = src_rt, },
+					samplers            = { SMP_ve_draw_text_src_sampler = src_sampler, },
 				})
 		}
 

backend/sokol/blit_atlas.shdc.glsl

@@ -1,6 +1,6 @@
 @module ve_blit_atlas
 
-@header package sectr
+@header package ve_sokol
 @header import sg "thirdparty:sokol/gfx"
 
 @vs ve_blit_atlas_vs

backend/sokol/draw_text.shdc.glsl

@@ -1,6 +1,6 @@
 @module ve_draw_text
 
-@header package sectr
+@header package ve_sokol
 @header import sg "thirdparty:sokol/gfx"
 
 @vs ve_draw_text_vs

examples/sokol_demo/sokol_demo.odin

@@ -42,7 +42,7 @@ FONT_LARGEST_PIXEL_SIZE       :: 400
 FONT_SIZE_INTERVAL         :: 2
 
 FONT_DEFAULT      :: Font_ID { "" }
-FONT_DEFAULT_SIZEZ :: 12.0
+FONT_DEFAULT_SIZE :: 12.0
 
 FONT_LOAD_USE_DEFAULT_SIZE :: -1
 FONT_LOAD_GEN_ID           :: ""
@@ -56,16 +56,16 @@ Font_ID  :: struct {
 	label : string,
 }
 
-FontDef :: struct {
+Font_Entry :: struct {
 	path_file    : string,
 	default_size : i32,
-	size_table   : [FONT_LARGEST_PIXEL_SIZE / FONT_SIZE_INTERVAL] ve.Font_ID,
+	ve_id        : ve.Font_ID,
 }
 
 Demo_Context :: struct {
 	ve_ctx     : ve.Context,
 	render_ctx : ve_sokol.Context,
-	font_ids   : map[string]FontDef,
+	font_ids   : map[string]Font_Entry,
 
 	// Values between 1, & -1 on Y axis
 	mouse_scroll : Vec2,
@@ -106,7 +106,7 @@ font_load :: proc(path_file : string,
 	font_data, read_succeded : = os.read_entire_file( path_file )
 	assert( bool(read_succeded), fmt.tprintf("Failed to read font file for: %v", path_file) )
 	font_data_size := cast(i32) len(font_data)
-font_firacode : Font_ID
+	font_firacode : Font_ID
 
 
 	desired_id := desired_id
@@ -115,24 +115,19 @@ font_firacode : Font_ID
 		desired_id = file_name_from_path(path_file)
 	}
 
-	demo_ctx.font_ids[desired_id] = FontDef {}
+	demo_ctx.font_ids[desired_id] = Font_Entry {}
 	def := & demo_ctx.font_ids[desired_id]
 
 	default_size := default_size
 	if default_size < 0 {
-		default_size = FONT_DEFAULT_SIZEZ
+		default_size = FONT_DEFAULT_SIZE
 	}
 
+	error : ve.Load_Font_Error
 	def.path_file    = path_file
 	def.default_size = default_size
-
-	for font_size : i32 = clamp( FONT_SIZE_INTERVAL, 2, FONT_SIZE_INTERVAL ); font_size <= FONT_LARGEST_PIXEL_SIZE; font_size += FONT_SIZE_INTERVAL
-	{
-		id    := (font_size / FONT_SIZE_INTERVAL) + (font_size % FONT_SIZE_INTERVAL)
-		ve_id := & def.size_table[id - 1]
-		ve_ret_id := ve.load_font( & demo_ctx.ve_ctx, desired_id, font_data, f32(font_size), curve_quality )
-		(ve_id^) = ve_ret_id
-	}
+	def.ve_id, error = ve.load_font( & demo_ctx.ve_ctx, desired_id, font_data, curve_quality )
+	assert(error == .None)
 
 	fid := Font_ID { desired_id }
 	return fid
@@ -140,43 +135,36 @@ font_firacode : Font_ID
 
 Font_Use_Default_Size :: f32(0.0)
 
-font_resolve_draw_id :: proc( id : Font_ID, size := Font_Use_Default_Size ) -> ( ve_id : ve.Font_ID, resolved_size : i32 )
-{
-	def           := demo_ctx.font_ids[ id.label ]
-	size          := size == 0.0 ? f32(def.default_size) : size
-	even_size     := math.round(size * (1.0 / f32(FONT_SIZE_INTERVAL))) * f32(FONT_SIZE_INTERVAL)
-	resolved_size  = clamp( i32( even_size), 2, FONT_LARGEST_PIXEL_SIZE )
-
-	id    := (resolved_size / FONT_SIZE_INTERVAL) + (resolved_size % FONT_SIZE_INTERVAL)
-	ve_id  = def.size_table[ id - 1 ]
-	return
-}
-
 measure_text_size :: proc( text : string, font : Font_ID, font_size := Font_Use_Default_Size, spacing : f32 ) -> Vec2
 {
-	ve_id, size := font_resolve_draw_id( font, font_size )
-	measured    := ve.measure_text_size( & demo_ctx.ve_ctx, ve_id, text )
+	def      := demo_ctx.font_ids[ font.label ]
+	measured := ve.measure_text_size( & demo_ctx.ve_ctx, def.ve_id, font_size, text )
 	return measured
 }
 
 get_font_vertical_metrics :: #force_inline proc ( font : Font_ID, font_size := Font_Use_Default_Size ) -> ( ascent, descent, line_gap : f32 ) 
 {
-	ve_id, size := font_resolve_draw_id( font, font_size )
-	ascent, descent, line_gap = ve.get_font_vertical_metrics( & demo_ctx.ve_ctx, ve_id )
+	def                      := demo_ctx.font_ids[ font.label ]
+	ascent, descent, line_gap = ve.get_font_vertical_metrics( & demo_ctx.ve_ctx, def.ve_id, font_size )
 	return
 }
 
 // Draw text using a string and normalized render coordinates
-draw_text_string_pos_norm :: proc( content : string, id : Font_ID, size : f32, pos : Vec2, color := COLOR_WHITE, scale : f32 = 1.0 )
+draw_text_string_pos_norm :: proc( content : string, font : Font_ID, size : f32, pos : Vec2, color := COLOR_WHITE, scale : f32 = 1.0 )
 {
-	width  := demo_ctx.screen_size.x
-	height := demo_ctx.screen_size.y
-
-	ve_id, resolved_size := font_resolve_draw_id( id, size )
 	color_norm := normalize_rgba8(color)
+	def        := demo_ctx.font_ids[ font.label ]
 
-	ve.set_colour( & demo_ctx.ve_ctx, color_norm )
-	ve.draw_text( & demo_ctx.ve_ctx, ve_id, content, pos, Vec2{1 / width, 1 / height} * scale )
+	ve.draw_text_normalized_space( & demo_ctx.ve_ctx, 
+		def.ve_id, 
+		size,
+		color_norm,
+		demo_ctx.screen_size,
+		pos, 
+		scale,
+		1.0,
+		content
+	)
 	return
 }
 
@@ -188,17 +176,13 @@ draw_text_string_pos_extent :: proc( content : string, id : Font_ID, size : f32,
 }
 
 // Adapt the draw_text_string_pos_extent_zoomed procedure
-draw_text_zoomed_norm :: proc(content : string, id : Font_ID, size : f32, pos : Vec2, zoom : f32, color := COLOR_WHITE)
+draw_text_zoomed_norm :: proc(content : string, font : Font_ID, size : f32, pos : Vec2, zoom : f32, color := COLOR_WHITE)
 {
 	screen_size      := demo_ctx.screen_size
-	screen_scale     := Vec2{1.0 / screen_size.x, 1.0 / screen_size.y}
+	screen_scale     := 1 / screen_size
 	zoom_adjust_size := size * zoom
 
-	// Over-sample font-size
-
-	zoom_adjust_size *= OVER_SAMPLE_ZOOM
-
-	ve_id, resolved_size := font_resolve_draw_id(id, zoom_adjust_size)
+	resolved_size := size
 
 	text_scale := screen_scale
 	{
@@ -209,12 +193,16 @@ draw_text_zoomed_norm :: proc(content : string, id : Font_ID, size : f32, pos :
 		text_scale.y       = clamp(text_scale.y, 0, 1)
 	}
 
-	// Down-sample back
-	text_scale /= OVER_SAMPLE_ZOOM
-
 	color_norm := normalize_rgba8(color)
-	ve.set_colour(&demo_ctx.ve_ctx, color_norm)
-	ve.draw_text(&demo_ctx.ve_ctx, ve_id, content, pos, text_scale)
+	def        := demo_ctx.font_ids[ font.label ]
+
+	ve.draw_text_normalized_space(& demo_ctx.ve_ctx, 
+		def.ve_id, 
+		screen_size,
+		pos, 
+		text_scale,
+		content
+	)
 }
 
 sokol_app_alloc :: proc "c" ( size : uint, user_data : rawptr ) -> rawptr {