WIP ESP32 port

8 files changed, 220 insertions, 0 deletions

diff --git a/src/gfx/CMakeLists.txt b/src/gfx/CMakeLists.txt
index 86f99c2..bdeb63a 100644
--- a/src/gfx/CMakeLists.txt
+++ b/src/gfx/CMakeLists.txt
@@ -26,6 +26,15 @@ elseif(SDL1_2_BUILD)
         "sdl-1.2/src/quad.c")
     set(deps ${deps} SDL::SDL)
     set(privdeps ${privdeps} header SDL::SDL_gfx)
+elseif(ESP32_BUILD)
+    set(inc ${inc} "esp32/inc")
+    set(privinc ${privinc} "esp32/privinc")
+    set(src ${src}
+        "esp32/src/env.c"
+        "esp32/src/line.c"
+        "esp32/src/rect.c"
+        "esp32/src/sprite.c"
+        "esp32/src/quad.c")
 endif()
 
 add_library(gfx ${src})
diff --git a/src/gfx/esp32/inc/gfx/port.h b/src/gfx/esp32/inc/gfx/port.h
new file mode 100644
index 0000000..36a294f
--- /dev/null
+++ b/src/gfx/esp32/inc/gfx/port.h
@@ -0,0 +1,55 @@
+#ifndef GFX_ESP32_H
+#define GFX_ESP32_H
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+struct sprite
+{
+    short x, y, w, h;
+    unsigned char u, v;
+    bool transparent;
+};
+
+struct quad
+{
+    unsigned char r, g, b;
+    short x0, x1, x2, x3;
+    short y0, y1, y2, y3;
+    unsigned char u0, u1, u2, u3;
+    unsigned char v0, v1, v2, v3;
+    short w, h;
+    bool transparent;
+};
+
+struct rect
+{
+    unsigned char r, g, b;
+    short x, y, w, h;
+    bool stp;
+};
+
+struct stp_4line
+{
+    short x, y;
+    unsigned char r, g, b;
+
+    struct stp_4line_vtx
+    {
+        unsigned char r, g, b;
+        short x, y;
+    } vertices[4];
+};
+
+#define common_get_or_ret(t, x, ret) \
+    struct t x##__, *const x = &x##__
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GFX_ESP32_H */
diff --git a/src/gfx/esp32/privinc/esp32/gfx_private.h b/src/gfx/esp32/privinc/esp32/gfx_private.h
new file mode 100644
index 0000000..0eeae11
--- /dev/null
+++ b/src/gfx/esp32/privinc/esp32/gfx_private.h
@@ -0,0 +1,21 @@
+#ifndef GFX_ESP32_PRIVATE_H
+#define GFX_ESP32_PRIVATE_H
+
+#include <gfx.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+enum
+{
+    SCREEN_W = 320,
+    SCREEN_H = 240
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GFX_ESP32_PRIVATE_H */
diff --git a/src/gfx/esp32/src/env.c b/src/gfx/esp32/src/env.c
new file mode 100644
index 0000000..1d6d080
--- /dev/null
+++ b/src/gfx/esp32/src/env.c
@@ -0,0 +1,61 @@
+#include <gfx.h>
+#include <gfx_private.h>
+#include <esp32/gfx_private.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int screen_w = SCREEN_W, screen_h = SCREEN_H;
+
+void gfx_deinit(void)
+{
+}
+
+int gfx_display_size(short *const w, short *const h)
+{
+    *w = SCREEN_W;
+    *h = SCREEN_H;
+    return 0;
+}
+
+int gfx_init(void)
+{
+    return -1;
+}
+
+bool gfx_inside_drawenv(const short x, const short y, const short w,
+    const short h)
+{
+    return (x + w >= 0)
+        && x < screen_w
+        && (y + h >= 0)
+		&& y < screen_h;
+}
+
+int gfx_toggle_fullscreen(void)
+{
+    return -1;
+}
+
+int gfx_set_fullscreen(const short w, const short h)
+{
+    return -1;
+}
+
+bool gfx_fullscreen_available(void)
+{
+    return false;
+}
+
+bool gfx_fullscreen(void)
+{
+    return true;
+}
+
+int gfx_draw(void)
+{
+    return -1;
+}
diff --git a/src/gfx/esp32/src/line.c b/src/gfx/esp32/src/line.c
new file mode 100644
index 0000000..67bfcea
--- /dev/null
+++ b/src/gfx/esp32/src/line.c
@@ -0,0 +1,17 @@
+#include <gfx.h>
+#include <gfx/port.h>
+#include <esp32/gfx_private.h>
+#include <stddef.h>
+
+void stp_4line_init(struct stp_4line *const l)
+{
+}
+
+void semitrans_stp_4line_init(struct stp_4line *r)
+{
+}
+
+int stp_4line_sort(struct stp_4line *const r)
+{
+    return 0;
+}
diff --git a/src/gfx/esp32/src/quad.c b/src/gfx/esp32/src/quad.c
new file mode 100644
index 0000000..05eb5e9
--- /dev/null
+++ b/src/gfx/esp32/src/quad.c
@@ -0,0 +1,15 @@
+#include <gfx.h>
+#include <gfx/port.h>
+#include <esp32/gfx_private.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+int quad_from_sprite(const struct sprite *const s, struct quad *const q)
+{
+    return -1;
+}
+
+int quad_sort(struct quad *const q)
+{
+    return -1;
+}
diff --git a/src/gfx/esp32/src/rect.c b/src/gfx/esp32/src/rect.c
new file mode 100644
index 0000000..2fa9b85
--- /dev/null
+++ b/src/gfx/esp32/src/rect.c
@@ -0,0 +1,19 @@
+#include <gfx.h>
+#include <gfx/port.h>
+#include <esp32/gfx_private.h>
+
+int rect_sort(struct rect *const r)
+{
+    return -1;
+}
+
+void rect_init(struct rect *const r)
+{
+    *r = (const struct rect){0};
+}
+
+void semitrans_rect_init(struct rect *const r)
+{
+    rect_init(r);
+    r->stp = true;
+}
diff --git a/src/gfx/esp32/src/sprite.c b/src/gfx/esp32/src/sprite.c
new file mode 100644
index 0000000..dcddad0
--- /dev/null
+++ b/src/gfx/esp32/src/sprite.c
@@ -0,0 +1,23 @@
+#include <gfx.h>
+#include <gfx/port.h>
+#include <esp32/gfx_private.h>
+
+void sprite_free(struct sprite *const s)
+{
+}
+
+int sprite_clone(const struct sprite *const src, struct sprite *const dst)
+{
+    *dst = *src;
+    return 0;
+}
+
+int sprite_from_fp(struct sprite *const s, FILE *const f)
+{
+    return -1;
+}
+
+int sprite_sort(struct sprite *const s)
+{
+    return -1;
+}