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-rw-r--r--minui/graphics.cpp94
1 files changed, 82 insertions, 12 deletions
diff --git a/minui/graphics.cpp b/minui/graphics.cpp
index dce1e619a..b24c2b114 100644
--- a/minui/graphics.cpp
+++ b/minui/graphics.cpp
@@ -36,12 +36,14 @@ static int overscan_offset_x = 0;
static int overscan_offset_y = 0;
static uint32_t gr_current = ~0;
-static constexpr uint32_t alpha_mask = 0xff000000;
// gr_draw is owned by backends.
static GRSurface* gr_draw = nullptr;
static GRRotation rotation = GRRotation::NONE;
static PixelFormat pixel_format = PixelFormat::UNKNOWN;
+// The graphics backend list that provides fallback options for the default backend selection.
+// For example, it will fist try DRM, then try FBDEV if DRM is unavailable.
+constexpr auto default_backends = { GraphicsBackend::DRM, GraphicsBackend::FBDEV };
static bool outside(int x, int y) {
auto swapped = (rotation == GRRotation::LEFT || rotation == GRRotation::RIGHT);
@@ -76,7 +78,7 @@ int gr_font_size(const GRFont* font, int* x, int* y) {
}
// Blends gr_current onto pix value, assumes alpha as most significant byte.
-static inline uint32_t pixel_blend(uint8_t alpha, uint32_t pix) {
+static inline uint32_t pixel_blend_argb(uint8_t alpha, uint32_t pix) {
if (alpha == 255) return gr_current;
if (alpha == 0) return pix;
uint32_t pix_r = pix & 0xff;
@@ -93,6 +95,48 @@ static inline uint32_t pixel_blend(uint8_t alpha, uint32_t pix) {
return (out_r & 0xff) | (out_g & 0xff00) | (out_b & 0xff0000) | (gr_current & 0xff000000);
}
+static inline uint32_t pixel_blend_rgba(uint8_t alpha, uint32_t pix) {
+ if (alpha == 255) return gr_current;
+ if (alpha == 0) return pix;
+ uint32_t pix_r = pix & 0xff00;
+ uint32_t pix_g = pix & 0xff0000;
+ uint32_t pix_b = pix & 0xff000000;
+ uint32_t cur_r = gr_current & 0xff00;
+ uint32_t cur_g = gr_current & 0xff0000;
+ uint32_t cur_b = gr_current & 0xff000000;
+
+ uint32_t out_r = (pix_r * (255 - alpha) + cur_r * alpha) / 255;
+ uint32_t out_g = (pix_g * (255 - alpha) + cur_g * alpha) / 255;
+ uint32_t out_b = (pix_b * (255 - alpha) + cur_b * alpha) / 255;
+
+ return (gr_current & 0xff) | (out_r & 0xff00) | (out_g & 0xff0000) | (out_b & 0xff000000);
+}
+
+static inline uint32_t pixel_blend(uint8_t alpha, uint32_t pix) {
+ if (pixel_format == PixelFormat::RGBA) {
+ return pixel_blend_rgba(alpha, pix);
+ }
+ return pixel_blend_argb(alpha, pix);
+}
+
+static inline uint32_t get_alphamask() {
+ if (pixel_format == PixelFormat::RGBA) {
+ return 0x000000ff;
+ }
+ return 0xff000000;
+}
+
+static inline uint8_t get_alpha_shift() {
+ if (pixel_format == PixelFormat::RGBA) {
+ return 0;
+ }
+ return 24;
+}
+
+static inline uint8_t get_alpha(uint32_t pix) {
+ return static_cast<uint8_t>((pix & (gr_current & get_alphamask())) >> get_alpha_shift());
+}
+
// Increments pixel pointer right, with current rotation.
static void incr_x(uint32_t** p, int row_pixels) {
if (rotation == GRRotation::LEFT) {
@@ -140,7 +184,7 @@ static uint32_t* PixelAt(GRSurface* surface, int x, int y, int row_pixels) {
static void TextBlend(const uint8_t* src_p, int src_row_bytes, uint32_t* dst_p, int dst_row_pixels,
int width, int height) {
- uint8_t alpha_current = static_cast<uint8_t>((alpha_mask & gr_current) >> 24);
+ uint8_t alpha_current = get_alpha(gr_current);
for (int j = 0; j < height; ++j) {
const uint8_t* sx = src_p;
uint32_t* px = dst_p;
@@ -155,7 +199,7 @@ static void TextBlend(const uint8_t* src_p, int src_row_bytes, uint32_t* dst_p,
}
void gr_text(const GRFont* font, int x, int y, const char* s, bool bold) {
- if (!font || !font->texture || (gr_current & alpha_mask) == 0) return;
+ if (!font || !font->texture || (gr_current & get_alphamask()) == 0) return;
if (font->texture->pixel_bytes != 1) {
printf("gr_text: font has wrong format\n");
@@ -210,6 +254,8 @@ void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a
uint32_t r32 = r, g32 = g, b32 = b, a32 = a;
if (pixel_format == PixelFormat::ARGB || pixel_format == PixelFormat::BGRA) {
gr_current = (a32 << 24) | (r32 << 16) | (g32 << 8) | b32;
+ } else if (pixel_format == PixelFormat::RGBA) {
+ gr_current = (b32 << 24) | (g32 << 16) | (r32 << 8) | a32;
} else {
gr_current = (a32 << 24) | (b32 << 16) | (g32 << 8) | r32;
}
@@ -244,7 +290,7 @@ void gr_fill(int x1, int y1, int x2, int y2) {
int row_pixels = gr_draw->row_bytes / gr_draw->pixel_bytes;
uint32_t* p = PixelAt(gr_draw, x1, y1, row_pixels);
- uint8_t alpha = static_cast<uint8_t>(((gr_current & alpha_mask) >> 24));
+ uint8_t alpha = get_alpha(gr_current);
if (alpha > 0) {
for (int y = y1; y < y2; ++y) {
uint32_t* px = p;
@@ -340,7 +386,22 @@ void gr_flip() {
gr_draw = gr_backend->Flip();
}
+std::unique_ptr<MinuiBackend> create_backend(GraphicsBackend backend) {
+ switch (backend) {
+ case GraphicsBackend::DRM:
+ return std::make_unique<MinuiBackendDrm>();
+ case GraphicsBackend::FBDEV:
+ return std::make_unique<MinuiBackendFbdev>();
+ default:
+ return nullptr;
+ }
+}
+
int gr_init() {
+ return gr_init(default_backends);
+}
+
+int gr_init(std::initializer_list<GraphicsBackend> backends) {
// pixel_format needs to be set before loading any resources or initializing backends.
std::string format = android::base::GetProperty("ro.minui.pixel_format", "");
if (format == "ABGR_8888") {
@@ -351,6 +412,8 @@ int gr_init() {
pixel_format = PixelFormat::ARGB;
} else if (format == "BGRA_8888") {
pixel_format = PixelFormat::BGRA;
+ } else if (format == "RGBA_8888") {
+ pixel_format = PixelFormat::RGBA;
} else {
pixel_format = PixelFormat::UNKNOWN;
}
@@ -361,19 +424,22 @@ int gr_init() {
ret);
}
- auto backend = std::unique_ptr<MinuiBackend>{ std::make_unique<MinuiBackendDrm>() };
- gr_draw = backend->Init();
-
- if (!gr_draw) {
- backend = std::make_unique<MinuiBackendFbdev>();
- gr_draw = backend->Init();
+ std::unique_ptr<MinuiBackend> minui_backend;
+ for (GraphicsBackend backend : backends) {
+ minui_backend = create_backend(backend);
+ if (!minui_backend) {
+ printf("gr_init: minui_backend %d is a nullptr\n", backend);
+ continue;
+ }
+ gr_draw = minui_backend->Init();
+ if (gr_draw) break;
}
if (!gr_draw) {
return -1;
}
- gr_backend = backend.release();
+ gr_backend = minui_backend.release();
int overscan_percent = android::base::GetIntProperty("ro.minui.overscan_percent", 0);
overscan_offset_x = gr_draw->width * overscan_percent / 100;
@@ -429,6 +495,10 @@ void gr_fb_blank(bool blank) {
gr_backend->Blank(blank);
}
+void gr_fb_blank(bool blank, int index) {
+ gr_backend->Blank(blank, static_cast<MinuiBackend::DrmConnector>(index));
+}
+
void gr_rotate(GRRotation rot) {
rotation = rot;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 23:09:10 +0200