sokol: type alias all sgl structs, support sgl_context (#13018)

vlib/sokol/sgl/enums.v

@@ -0,0 +1,12 @@
+module sgl
+
+// Error is C.sgl_error_t
+pub enum SglError {
+	no_error = C.SGL_NO_ERROR // 0
+	vertices_full = C.SGL_ERROR_VERTICES_FULL
+	uniforms_full = C.SGL_ERROR_UNIFORMS_FULL
+	commands_full = C.SGL_ERROR_COMMANDS_FULL
+	stack_overflow = C.SGL_ERROR_STACK_OVERFLOW
+	stack_underfloat = C.SGL_ERROR_STACK_UNDERFLOW
+	no_context = C.SGL_ERROR_NO_CONTEXT
+}

vlib/sokol/sgl/sgl.c.v

@@ -4,11 +4,12 @@ import sokol.gfx
 
 pub const (
 	version = gfx.version + 1
+	context = Context{0x00010001} // C.SGL_DEFAULT_CONTEXT = { 0x00010001 }
 )
 
 // setup/shutdown/misc
 [inline]
-pub fn setup(desc &C.sgl_desc_t) {
+pub fn setup(desc &Desc) {
 	C.sgl_setup(desc)
 }
 
@@ -18,13 +19,13 @@ pub fn shutdown() {
 }
 
 [inline]
-pub fn error() C.sgl_error_t {
-	return C.sgl_error()
+pub fn error() SglError {
+	return SglError(int(C.sgl_error()))
 }
 
 [inline]
-pub fn defaults() {
-	C.sgl_defaults()
+pub fn context_error(ctx Context) SglError {
+	return SglError(int(C.sgl_context_error(ctx)))
 }
 
 [inline]
@@ -37,18 +38,54 @@ pub fn deg(rad f32) f32 {
 	return C.sgl_deg(rad)
 }
 
+// context functions
+[inline]
+pub fn make_context(desc &ContextDesc) Context {
+	return C.sgl_make_context(desc)
+}
+
+[inline]
+pub fn destroy_context(ctx Context) {
+	C.sgl_destroy_context(ctx)
+}
+
+[inline]
+pub fn set_context(ctx Context) {
+	C.sgl_set_context(ctx)
+}
+
+[inline]
+pub fn get_context() Context {
+	return C.sgl_get_context()
+}
+
+[inline]
+pub fn default_context() Context {
+	return C.sgl_default_context()
+}
+
 // create and destroy pipeline objects
 [inline]
-pub fn make_pipeline(desc &gfx.PipelineDesc) C.sgl_pipeline {
+pub fn make_pipeline(desc &gfx.PipelineDesc) Pipeline {
 	return C.sgl_make_pipeline(desc)
 }
 
 [inline]
-pub fn destroy_pipeline(pip C.sgl_pipeline) {
+pub fn context_make_pipeline(ctx Context, desc &gfx.PipelineDesc) Pipeline {
+	return C.sgl_context_make_pipeline(ctx, desc)
+}
+
+[inline]
+pub fn destroy_pipeline(pip Pipeline) {
 	C.sgl_destroy_pipeline(pip)
 }
 
 // render state functions
+[inline]
+pub fn defaults() {
+	C.sgl_defaults()
+}
+
 [inline]
 pub fn viewport(x int, y int, w int, h int, origin_top_left bool) {
 	C.sgl_viewport(x, y, w, h, origin_top_left)
@@ -86,7 +123,7 @@ pub fn default_pipeline() {
 }
 
 [inline]
-pub fn load_pipeline(pip C.sgl_pipeline) {
+pub fn load_pipeline(pip Pipeline) {
 	C.sgl_load_pipeline(pip)
 }
 
@@ -373,8 +410,13 @@ pub fn end() {
 	C.sgl_end()
 }
 
-// render everything
+// render recorded commands
 [inline]
 pub fn draw() {
 	C.sgl_draw()
 }
+
+[inline]
+pub fn context_draw(ctx Context) {
+	C.sgl_context_draw(ctx)
+}

vlib/sokol/sgl/sgl_funcs.c.v

@@ -4,15 +4,24 @@ module sgl
 fn C.sgl_setup(desc &C.sgl_desc_t)
 fn C.sgl_shutdown()
 fn C.sgl_error() C.sgl_error_t
-fn C.sgl_defaults()
+fn C.sgl_context_error(ctx C.sgl_context) C.sgl_error_t
 fn C.sgl_rad(deg f32) f32
 fn C.sgl_deg(rad f32) f32
 
+// context functions
+fn C.sgl_make_context(desc &C.sgl_context_desc_t) C.sgl_context
+fn C.sgl_destroy_context(ctx C.sgl_context)
+fn C.sgl_set_context(ctx C.sgl_context)
+fn C.sgl_get_context() C.sgl_context
+fn C.sgl_default_context() C.sgl_context
+
 // create and destroy pipeline objects
 fn C.sgl_make_pipeline(desc &C.sg_pipeline_desc) C.sgl_pipeline
+fn C.sgl_context_make_pipeline(ctx C.sgl_context, desc &C.sg_pipeline_desc) C.sgl_pipeline
 fn C.sgl_destroy_pipeline(pip C.sgl_pipeline)
 
 // render state functions
+fn C.sgl_defaults()
 fn C.sgl_viewport(x int, y int, w int, h int, origin_top_left bool)
 fn C.sgl_viewportf(x f32, y f32, w f32, h f32, origin_top_left bool)
 fn C.sgl_scissor_rect(x int, y int, w int, h int, origin_top_left bool)
@@ -87,5 +96,6 @@ fn C.sgl_v3f_t2f_c4b(x f32, y f32, z f32, u f32, v f32, r byte, g byte, b byte,
 fn C.sgl_v3f_t2f_c1i(x f32, y f32, z f32, u f32, v f32, rgba u32)
 fn C.sgl_end()
 
-// render everything
+// render recorded commands
 fn C.sgl_draw()
+fn C.sgl_context_draw(ctx C.sgl_context)

vlib/sokol/sgl/sgl_structs.c.v

@@ -1,24 +1,47 @@
 module sgl
 
-// should be in a proper module
-pub enum SglError {
-	no_error
-	vertices_full
-	commands_full
-	stack_overflow
-	stack_underfloat
-}
+import sokol.gfx
 
-pub struct C.sgl_pipeline {
+[typedef]
+struct C.sgl_pipeline {
 	id u32
 }
 
-pub struct C.sgl_desc_t {
+pub type Pipeline = C.sgl_pipeline
+
+[typedef]
+struct C.sgl_context {
+	id u32
+}
+
+pub type Context = C.sgl_context
+
+// ContextDesc
+//
+// Describes the initialization parameters of a rendering context.
+// Creating additional contexts is useful if you want to render
+// in separate sokol-gfx passes.
+// ContextDesc is sgl_context_desc_t
+pub type ContextDesc = C.sgl_context_desc_t
+
+[typedef]
+struct C.sgl_context_desc_t {
+	max_vertices int // default: 64k
+	max_commands int // default: 16k
+	color_format gfx.PixelFormat // C.sg_pixel_format
+	depth_format gfx.PixelFormat // C.sg_pixel_format
+	sample_count int
+}
+
+pub type Desc = C.sgl_desc_t
+
+[typedef]
+struct C.sgl_desc_t {
 	max_vertices       int // size for vertex buffer
 	max_commands       int // size of uniform- and command-buffers
 	pipeline_pool_size int // size of the internal pipeline pool, default is 64
-	color_format       C.sg_pixel_format
-	depth_format       C.sg_pixel_format
+	color_format       gfx.PixelFormat // C.sg_pixel_format
+	depth_format       gfx.PixelFormat // C.sg_pixel_format
 	sample_count       int
-	face_winding       C.sg_face_winding // default front face winding is CCW
+	face_winding       gfx.FaceWinding // C.sg_face_winding // default front face winding is CCW
 }