4 files changed, 23 insertions, 3 deletions
diff --git a/src/graphics.cc b/src/graphics.cc
index 40e67ab..cd606b2 100644
--- a/src/graphics.cc
+++ b/src/graphics.cc
@@ -6,6 +6,7 @@
 
 #include <cstring>
 
+#include "cglm/vec4.h"
 #include "utils.h"
 #include "wlstate.h"
 
@@ -98,7 +99,7 @@ void wayc_graphics_deinit(struct graphics_s* graphics) {
 enum renderer_error_e wayc_renderer_init(struct renderer_s* renderer,
                                          struct window_s* window,
                                          struct graphics_s* graphics, i32 width,
-                                         i32 height) {
+                                         i32 height, vec4 ccolor) {
   wayc_notnull(renderer);
   wayc_notnull(window);
   wayc_notnull(graphics);
@@ -125,6 +126,7 @@ enum renderer_error_e wayc_renderer_init(struct renderer_s* renderer,
   renderer->esurface = esurface;
   renderer->width = width;
   renderer->height = height;
+  glm_vec4_copy(ccolor, renderer->ccolor);
 
   wayc_renderer_use(renderer);
   if (gladLoadGLLoader((GLADloadproc)eglGetProcAddress) == 0) {
@@ -145,9 +147,21 @@ void wayc_renderer_begin(struct renderer_s* renderer) {
   swap.gl = gl_swap;
   swap.width = renderer->width;
   swap.height = renderer->height;
+  swap.sample_count = 1;
+
+  sg_color_attachment_action color_action = {};
+  color_action.load_action = SG_LOADACTION_CLEAR;
+  color_action.clear_value = {
+      WAYC_X(renderer->ccolor), WAYC_Y(renderer->ccolor),
+      WAYC_Z(renderer->ccolor), WAYC_A(renderer->ccolor)};
+  color_action.store_action = SG_STOREACTION_STORE;
+
+  sg_pass_action action = {};
+  action.colors[0] = color_action;
 
   sg_pass pass = {};
   pass.swapchain = swap;
+  pass.action = action;
 
   sg_begin_pass(&pass);
 }
diff --git a/src/graphics.h b/src/graphics.h
index 315a879..f8398a2 100644
--- a/src/graphics.h
+++ b/src/graphics.h
@@ -4,6 +4,7 @@
 #include <sokol_gfx.h>
 #include <wayland-egl.h>
 
+#include "cglm/types.h"
 #include "glad.h"
 #include "utils.h"
 #include "window.h"
@@ -39,12 +40,13 @@ struct renderer_s {
   EGLSurface esurface;
 
   i32 width, height;
+  vec4 ccolor;
 };
 
 enum renderer_error_e wayc_renderer_init(struct renderer_s* renderer,
                                          struct window_s* window,
                                          struct graphics_s* graphics, i32 width,
-                                         i32 height);
+                                         i32 height, vec4 ccolor);
 static inline void wayc_renderer_resize(struct renderer_s* renderer, i32 width,
                                         i32 height) {
   wayc_notnull(renderer);
diff --git a/src/utils.h b/src/utils.h
index 41eab56..8e739a1 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -76,6 +76,8 @@ static inline u32 wayc_min(u32 a, u32 b) { return a > b ? a : b; }
 
 #define WAYC_X(v) ((v)[0])
 #define WAYC_Y(v) ((v)[1])
+#define WAYC_Z(v) ((v)[2])
+#define WAYC_A(v) ((v)[3])
 
 #define WAYC_TRIANGLE_NVERTS 3
 #define WAYC_TRIANGLE_NINDICES 3
diff --git a/src/wayclock.cc b/src/wayclock.cc
index c2ef95c..9b71cc4 100644
--- a/src/wayclock.cc
+++ b/src/wayclock.cc
@@ -15,6 +15,7 @@
 #define WAYC_ATLAS_WIDTH 512
 #define WAYC_ATLAS_HEIGHT 512
 #define WAYC_FONT_SIZE 48
+#define WAYC_CLEAR_COLOR vec4{0.1f, 0.2f, 0.2f, 1.0f}
 
 struct app_s {
   struct renderer_s* renderer;
@@ -101,7 +102,8 @@ int main() {
 
   struct renderer_s renderer;
   if (wayc_renderer_init(&renderer, &window, &graphics, WAYC_APP_WIDTH,
-                         WAYC_APP_HEIGHT) != RENDERER_ERROR_NONE)
+                         WAYC_APP_HEIGHT,
+                         WAYC_CLEAR_COLOR) != RENDERER_ERROR_NONE)
     wayc_panic("Failed to initialize renderer");
 
   wayc_defer(wayc_renderer_deinit(&renderer));