vertex pulling sample wip

CMakeLists.txt

@@ -65,14 +65,18 @@ elseif (SOKOL_USE_EGL_GLES3)
     set(slang "glsl300es")
 elseif (SOKOL_USE_EGL_GL)
     set(sokol_backend SOKOL_GLCORE)
-    set(slang "glsl410")
+    set(slang "glsl430")
 else()
     if (FIPS_IOS)
         set(sokol_backend SOKOL_GLES3)
         set(slang "glsl300es")
     else()
         set(sokol_backend SOKOL_GLCORE)
-        set(slang "glsl410")
+        if (FIPS_MACOS)
+            set(slang "glsl410")
+        else()
+            set(slang "glsl430")
+        endif()
     endif()
 endif()
 

sapp/CMakeLists.txt

@@ -83,6 +83,20 @@ fips_begin_app(noninterleaved-sapp-ui windowed)
     target_compile_definitions(noninterleaved-sapp-ui PRIVATE USE_DBG_UI)
 fips_end_app()
 
+fips_ide_group(Samples)
+fips_begin_app(vertexpull-sapp windowed)
+    fips_files(vertexpull-sapp.c)
+    sokol_shader(vertexpull-sapp.glsl ${slang})
+    fips_deps(sokol)
+fips_end_app()
+fips_ide_group(SamplesWithDebugUI)
+fips_begin_app(vertexpull-sapp-ui windowed)
+    fips_files(vertexpull-sapp.c)
+    sokol_shader(vertexpull-sapp.glsl ${slang})
+    fips_deps(sokol dbgui)
+    target_compile_definitions(vertexpull-sapp-ui PRIVATE USE_DBG_UI)
+fips_end_app()
+
 fips_ide_group(Samples)
 fips_begin_app(texcube-sapp windowed)
     fips_files(texcube-sapp.c)

sapp/vertexpull-sapp.c

@@ -0,0 +1,14 @@
+//------------------------------------------------------------------------------
+//  vertexpull-sapp.c
+//
+//  Demonstrates vertex pulling from a storage buffer.
+//------------------------------------------------------------------------------
+#include "sokol_app.h"
+#include "sokol_gfx.h"
+#include "sokol_log.h"
+#include "sokol_glue.h"
+#define HANDMADE_MATH_IMPLEMENTATION
+#define HANDMADE_MATH_NO_SSE
+#include "HandmadeMath.h"
+#include "dbgui/dbgui.h"
+#include "vertexpull-sapp.glsl.h"

sapp/vertexpull-sapp.glsl

@@ -0,0 +1,32 @@
+@ctype mat4 hmm_mat4
+
+@vs vs
+uniform vs_params {
+    mat4 mvp;
+};
+
+struct vertex_t {
+    vec3 pos;
+    vec4 color;
+};
+
+readonly buffer ssbo {
+    vertex_t vtx[];
+};
+
+out vec4 color;
+
+void main() {
+    gl_Position = mvp * vec4(vtx[gl_VertexIndex].pos, 1.0);
+    color = vtx[gl_VertexIndex].color;
+}
+@end
+
+@fs fs
+in vec4 color;
+out vec4 frag_color;
+
+void main() {
+    frag_color = color;
+}
+@end