sokol gp rectangle demo works!

code/sectr/engine/client_api.odin

@@ -11,9 +11,10 @@ import    "core:strings"
 import    "core:time"
 import    "core:prof/spall"
 
-import sokol_app          "thirdparty:sokol/app"
-import sokol_gfx          "thirdparty:sokol/gfx"
-import sokol_app_gfx_glue "thirdparty:sokol/glue"
+import sokol_app  "thirdparty:sokol/app"
+import sokol_gfx  "thirdparty:sokol/gfx"
+import sokol_glue "thirdparty:sokol/glue"
+import sokol_gp   "thirdparty:sokol/gp"
 
 Path_Assets       :: "../assets/"
 Path_Shaders      :: "../shaders/"
@@ -205,7 +206,7 @@ startup :: proc( prof : ^SpallProfiler, persistent_mem, frame_mem, transient_mem
 
 	// Setup sokol_gfx
 	{
-		glue_env := sokol_app_gfx_glue.environment()
+		glue_env := sokol_glue.environment()
 
 		desc := sokol_gfx.Desc {
 			buffer_pool_size      = 128,
@@ -236,51 +237,19 @@ startup :: proc( prof : ^SpallProfiler, persistent_mem, frame_mem, transient_mem
         case .DUMMY: logf("sokol_gfx: using dummy backend")
 		}
 
-		// Learning examples
-		{
-
-			debug.gfx_clear_demo_pass_action.colors[0] = {
-				load_action = .CLEAR,
-				clear_value = { 1, 0, 0, 1 }
-			}
-			triangle_vertices := [?]f32 {
-	      // positions      // colors
-	       0.0,  0.5, 0.5,  1.0, 0.0, 0.0, 1.0,
-	       0.5, -0.5, 0.5,  0.0, 1.0, 0.0, 1.0,
-	      -0.5, -0.5, 0.5,  0.0, 0.0, 1.0, 1.0,
-	    }
-
-    	tri_shader_attr_vs_position :: 0
-			tri_shader_attr_vs_color0   :: 1
-
-	    using debug.gfx_tri_demo_state
-	    bindings.vertex_buffers[0] = sokol_gfx.make_buffer( sokol_gfx.Buffer_Desc {
-	    	data = {
-	    		ptr  = & triangle_vertices,
-		    	size = size_of(triangle_vertices)
-	    	}
-	    })
-	    pipeline = sokol_gfx.make_pipeline( sokol_gfx.Pipeline_Desc {
-	    	shader = sokol_gfx.make_shader( triangle_shader_desc(backend)),
-	    	layout = sokol_gfx.Vertex_Layout_State {
-	    		attrs = {
-	    			tri_shader_attr_vs_position = { format = .FLOAT3 },
-	    			tri_shader_attr_vs_color0   = { format = .FLOAT4 },
-	    		}
-	    	}
-	    })
-	    pass_action.colors[0] = {
-    		load_action = .CLEAR,
-    		clear_value = { 0, 0, 0, 1 }
-	    }
-
-	    render_data.pass_actions.bg_clear_black.colors[0] = sokol_gfx.Color_Attachment_Action {
-    		load_action = .CLEAR,
-    		clear_value = { 0, 0, 0, 1 }
-	    }
+		render_data.pass_actions.bg_clear_black.colors[0] = sokol_gfx.Color_Attachment_Action {
+			load_action = .CLEAR,
+			clear_value = { 0, 0, 0, 1 }
 		}
 	}
 
+	// Setup sokol_gp
+	{
+		desc := sokol_gp.Desc {}
+		sokol_gp.setup(desc)
+		verify( cast(b32) sokol_gp.is_valid(), "Failed to setup sokol gp (graphics painter)" )
+	}
+
 	// Basic Font Setup
 	if true
 	{
@@ -389,6 +358,8 @@ sectr_shutdown :: proc()
 
 	// font_provider_shutdown()
 
+	sokol_gp.shutdown()
+	sokol_gfx.shutdown()
 	sokol_app.post_client_cleanup()
 
 	log("Module shutdown complete")
@@ -444,6 +415,9 @@ hot_reload :: proc( prof : ^SpallProfiler, persistent_mem, frame_mem, transient_
 
 	slab_reload( persistent_slab, persistent_allocator() )
 
+	// input_reload()
+
+	// font_provider_reload()
 	hmap_chained_reload( font_provider_data.font_cache, persistent_allocator())
 
 	str_cache_reload( & string_cache, persistent_allocator(), persistent_allocator() )

code/sectr/engine/render_testing.odin

@@ -1,10 +1,13 @@
 package sectr
 
+import "core:math"
+import "core:time"
+
 import ve         "codebase:font/VEFontCache"
 import sokol_app  "thirdparty:sokol/app"
 import sokol_gfx  "thirdparty:sokol/gfx"
 import sokol_glue "thirdparty:sokol/glue"
-import "core:time"
+import sokol_gp   "thirdparty:sokol/gp"
 
 PassActions :: struct {
 	bg_clear_black : sokol_gfx.Pass_Action,
@@ -78,6 +81,44 @@ render :: proc()
 	  sokol_gfx.commit()
 	}
 
+	width  := app_window.extent.x * 2
+	height := app_window.extent.y * 2
+
+	profile_begin("sokol_gp demo pass")
+	// Hello Sokol GP Demo
+	{
+		screen_ratio := width * (1.0 / height)
+
+		sokol_gp.begin(i32(width), i32(height))
+
+		sokol_gp.viewport(0, 0, i32(width), i32(height))
+		sokol_gp.project(-screen_ratio, screen_ratio, 1.0, -1.0)
+
+		sokol_gp.set_color(0.1, 0.1, 0.1, 1.0)
+		sokol_gp.clear()
+
+		// Draw animated rectangle box that rotates and changes colors
+		time := f32(f64(sokol_app.frame_count()) * sokol_app.frame_duration())
+
+		red   := math.sin(time) * 0.5 + 0.5
+		green := math.cos(time) * 0.5 + 0.5
+
+		sokol_gp.set_color(red, green, 0.3, 1.0)
+		sokol_gp.rotate_at(time, 0.0, 0.0)
+		sokol_gp.draw_filled_rect(-0.5, -0.5, 1.0, 1.0)
+	}
+
+	// Process sokol gp render depth pass
+	{
+		sokol_gfx.begin_pass( sokol_gfx.Pass { action = {}, swapchain = sokol_glue.swapchain() })
+
+		sokol_gp.flush()
+		sokol_gp.end()
+
+		sokol_gfx.end_pass()
+	}
+	profile_end()
+
 	// "Draw text" using immediate mode api
 	{
 		@static index : i32
@@ -89,8 +130,6 @@ render :: proc()
 		// font_provider := & state.font_provider_data
 		fdef := hmap_chained_get( font_cache, default_font.key )
 
-		width  := app_window.extent.x * 2
-		height := app_window.extent.y * 2
 
 		ve.set_colour( & ve_font_cache,  { 1.0, 1.0, 1.0, 1.0 } )
 		ve.configure_snap( & ve_font_cache, u32(state.app_window.extent.x * 2.0), u32(state.app_window.extent.y * 2.0) )
@@ -99,8 +138,8 @@ render :: proc()
 	}
 
 
-	sokol_gfx.begin_pass(sokol_gfx.Pass { action = pass_actions.bg_clear_black, swapchain = sokol_glue.swapchain() })
-	sokol_gfx.end_pass();
+	// sokol_gfx.begin_pass(sokol_gfx.Pass { action = pass_actions.bg_clear_black, swapchain = sokol_glue.swapchain() })
+	// sokol_gfx.end_pass();
 
 	// Process the draw calls for drawing text
 	if true