From 922372b582c07a849c0091a9497e27dcfc95e0e8 Mon Sep 17 00:00:00 2001
From: Ed_ <edwardgz@gmail.com>
Date: Wed, 11 Sep 2024 15:11:24 -0400
Subject: [PATCH] Fixes for uv coords on shaders when compiling for opengl vs
 directx

---
 .gitignore                            | 3 +++
 backend/sokol/draw_text.shdc.glsl     | 6 +++++-
 backend/sokol/source_shared.shdc.glsl | 6 +++++-
 scripts/compile_sokol_shaders.sh      | 6 +++---
 4 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/.gitignore b/.gitignore
index ce40f18..585b68f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 build
 thirdparty
 .vscode
+backend/sokol/render_glyph.odin
+backend/sokol/blit_atlas.odin
+backend/sokol/draw_text.odin
diff --git a/backend/sokol/draw_text.shdc.glsl b/backend/sokol/draw_text.shdc.glsl
index 0ff756b..264039d 100644
--- a/backend/sokol/draw_text.shdc.glsl
+++ b/backend/sokol/draw_text.shdc.glsl
@@ -10,7 +10,11 @@ out vec2 uv;
 
 void main()
 {
-	uv          = vec2( v_texture.x, 1 - v_texture.y );
+#if SOKOL_GLSL
+	uv          = vec2( v_texture.x, v_texture.y );
+#else
+	uv          = vec2( v_texture.x, 1.0 - v_texture.y );
+#endif
 	gl_Position = vec4( v_position * 2.0f - 1.0f, 0.0f, 1.0f );
 }
 @end
diff --git a/backend/sokol/source_shared.shdc.glsl b/backend/sokol/source_shared.shdc.glsl
index e3ab25a..2d30f5d 100644
--- a/backend/sokol/source_shared.shdc.glsl
+++ b/backend/sokol/source_shared.shdc.glsl
@@ -5,6 +5,10 @@ out vec2 uv;
 
 void main()
 {
-	uv          = vec2( v_texture.x, 1 - v_texture.y );
+#if SOKOL_GLSL
+	uv          = vec2( v_texture.x, v_texture.y );
+#else
+	uv          = vec2( v_texture.x, 1.0 - v_texture.y );
+#endif
 	gl_Position = vec4( v_position, 0.0, 1.0 );
 }
diff --git a/scripts/compile_sokol_shaders.sh b/scripts/compile_sokol_shaders.sh
index 695e215..743e605 100644
--- a/scripts/compile_sokol_shaders.sh
+++ b/scripts/compile_sokol_shaders.sh
@@ -29,17 +29,17 @@ pushd "$path_backend_sokol" > /dev/null
 
 "$sokol_shdc" "$flag_input" "$shadersrc_blit_atlas" \
               "$flag_output" "$shaderout_blit_atlas" \
-              "$flag_target_lang" "glsl410:glsl300es:hlsl4:metal_macos:wgsl" \
+              "$flag_target_lang" "glsl410:glsl300es:metal_macos:wgsl" \
               "$flag_format_odin" "$flag_module=blit_atlas"
 
 "$sokol_shdc" "$flag_input" "$shadersrc_render_glyph" \
               "$flag_output" "$shaderout_render_glyph" \
-              "$flag_target_lang" "glsl410:glsl300es:hlsl4:metal_macos:wgsl" \
+              "$flag_target_lang" "glsl410:glsl300es:metal_macos:wgsl" \
               "$flag_format_odin" "$flag_module=render_glyph"
 
 "$sokol_shdc" "$flag_input" "$shadersrc_draw_text" \
               "$flag_output" "$shaderout_draw_text" \
-              "$flag_target_lang" "glsl410:glsl300es:hlsl4:metal_macos:wgsl" \
+              "$flag_target_lang" "glsl410:glsl300es:metal_macos:wgsl" \
               "$flag_format_odin" "$flag_module=draw_text"
 
 popd > /dev/null