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-rw-r--r--drivers/painter/generic/qp_rgb565_surface.c277
-rw-r--r--drivers/painter/generic/qp_rgb565_surface.h42
-rw-r--r--drivers/painter/tft_panel/qp_tft_panel.c4
3 files changed, 320 insertions, 3 deletions
diff --git a/drivers/painter/generic/qp_rgb565_surface.c b/drivers/painter/generic/qp_rgb565_surface.c
new file mode 100644
index 0000000000..c4de336535
--- /dev/null
+++ b/drivers/painter/generic/qp_rgb565_surface.c
@@ -0,0 +1,277 @@
+// Copyright 2022 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include "color.h"
+#include "qp_rgb565_surface.h"
+#include "qp_draw.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Common
+
+// Device definition
+typedef struct rgb565_surface_painter_device_t {
+ struct painter_driver_t base; // must be first, so it can be cast to/from the painter_device_t* type
+
+ // The target buffer
+ uint16_t *buffer;
+
+ // Manually manage the viewport for streaming pixel data to the display
+ uint16_t viewport_l;
+ uint16_t viewport_t;
+ uint16_t viewport_r;
+ uint16_t viewport_b;
+
+ // Current write location to the display when streaming pixel data
+ uint16_t pixdata_x;
+ uint16_t pixdata_y;
+
+ // Maintain a dirty region so we can stream only what we need
+ bool is_dirty;
+ uint16_t dirty_l;
+ uint16_t dirty_t;
+ uint16_t dirty_r;
+ uint16_t dirty_b;
+
+} rgb565_surface_painter_device_t;
+
+// Driver storage
+rgb565_surface_painter_device_t surface_drivers[RGB565_SURFACE_NUM_DEVICES] = {0};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Helpers
+
+static inline void increment_pixdata_location(rgb565_surface_painter_device_t *surface) {
+ // Increment the X-position
+ surface->pixdata_x++;
+
+ // If the x-coord has gone past the right-side edge, loop it back around and increment the y-coord
+ if (surface->pixdata_x > surface->viewport_r) {
+ surface->pixdata_x = surface->viewport_l;
+ surface->pixdata_y++;
+ }
+
+ // If the y-coord has gone past the bottom, loop it back to the top
+ if (surface->pixdata_y > surface->viewport_b) {
+ surface->pixdata_y = surface->viewport_t;
+ }
+}
+
+static inline void setpixel(rgb565_surface_painter_device_t *surface, uint16_t x, uint16_t y, uint16_t rgb565) {
+ // Skip messing with the dirty info if the original value already matches
+ if (surface->buffer[y * surface->base.panel_width + x] != rgb565) {
+ // Maintain dirty region
+ if (surface->dirty_l > x) {
+ surface->dirty_l = x;
+ }
+ if (surface->dirty_r < x) {
+ surface->dirty_r = x;
+ }
+ if (surface->dirty_t > y) {
+ surface->dirty_t = y;
+ }
+ if (surface->dirty_b < y) {
+ surface->dirty_b = y;
+ }
+
+ // Always dirty after a setpixel
+ surface->is_dirty = true;
+
+ // Update the pixel data in the buffer
+ surface->buffer[y * surface->base.panel_width + x] = rgb565;
+ }
+}
+
+static inline void append_pixel(rgb565_surface_painter_device_t *surface, uint16_t rgb565) {
+ setpixel(surface, surface->pixdata_x, surface->pixdata_y, rgb565);
+ increment_pixdata_location(surface);
+}
+
+static inline void stream_pixdata(rgb565_surface_painter_device_t *surface, const uint16_t *data, uint32_t native_pixel_count) {
+ for (uint32_t pixel_counter = 0; pixel_counter < native_pixel_count; ++pixel_counter) {
+ append_pixel(surface, data[pixel_counter]);
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Driver vtable
+
+static bool qp_rgb565_surface_init(painter_device_t device, painter_rotation_t rotation) {
+ struct painter_driver_t * driver = (struct painter_driver_t *)device;
+ rgb565_surface_painter_device_t *surface = (rgb565_surface_painter_device_t *)driver;
+ memset(surface->buffer, 0, driver->panel_width * driver->panel_height * driver->native_bits_per_pixel / 8);
+ return true;
+}
+
+static bool qp_rgb565_surface_power(painter_device_t device, bool power_on) {
+ // No-op.
+ return true;
+}
+
+static bool qp_rgb565_surface_clear(painter_device_t device) {
+ struct painter_driver_t *driver = (struct painter_driver_t *)device;
+ driver->driver_vtable->init(device, driver->rotation); // Re-init the surface
+ return true;
+}
+
+static bool qp_rgb565_surface_flush(painter_device_t device) {
+ struct painter_driver_t * driver = (struct painter_driver_t *)device;
+ rgb565_surface_painter_device_t *surface = (rgb565_surface_painter_device_t *)driver;
+ surface->dirty_l = surface->dirty_t = UINT16_MAX;
+ surface->dirty_r = surface->dirty_b = 0;
+ surface->is_dirty = false;
+ return true;
+}
+
+static bool qp_rgb565_surface_viewport(painter_device_t device, uint16_t left, uint16_t top, uint16_t right, uint16_t bottom) {
+ struct painter_driver_t * driver = (struct painter_driver_t *)device;
+ rgb565_surface_painter_device_t *surface = (rgb565_surface_painter_device_t *)driver;
+
+ // Set the viewport locations
+ surface->viewport_l = left;
+ surface->viewport_t = top;
+ surface->viewport_r = right;
+ surface->viewport_b = bottom;
+
+ // Reset the write location to the top left
+ surface->pixdata_x = left;
+ surface->pixdata_y = top;
+ return true;
+}
+
+// Stream pixel data to the current write position in GRAM
+static bool qp_rgb565_surface_pixdata(painter_device_t device, const void *pixel_data, uint32_t native_pixel_count) {
+ struct painter_driver_t * driver = (struct painter_driver_t *)device;
+ rgb565_surface_painter_device_t *surface = (rgb565_surface_painter_device_t *)driver;
+ stream_pixdata(surface, (const uint16_t *)pixel_data, native_pixel_count);
+ return true;
+}
+
+// Pixel colour conversion
+static bool qp_rgb565_surface_palette_convert_rgb565_swapped(painter_device_t device, int16_t palette_size, qp_pixel_t *palette) {
+ for (int16_t i = 0; i < palette_size; ++i) {
+ RGB rgb = hsv_to_rgb_nocie((HSV){palette[i].hsv888.h, palette[i].hsv888.s, palette[i].hsv888.v});
+ uint16_t rgb565 = (((uint16_t)rgb.r) >> 3) << 11 | (((uint16_t)rgb.g) >> 2) << 5 | (((uint16_t)rgb.b) >> 3);
+ palette[i].rgb565 = __builtin_bswap16(rgb565);
+ }
+ return true;
+}
+
+// Append pixels to the target location, keyed by the pixel index
+static bool qp_rgb565_surface_append_pixels_rgb565(painter_device_t device, uint8_t *target_buffer, qp_pixel_t *palette, uint32_t pixel_offset, uint32_t pixel_count, uint8_t *palette_indices) {
+ uint16_t *buf = (uint16_t *)target_buffer;
+ for (uint32_t i = 0; i < pixel_count; ++i) {
+ buf[pixel_offset + i] = palette[palette_indices[i]].rgb565;
+ }
+ return true;
+}
+
+const struct painter_driver_vtable_t rgb565_surface_driver_vtable = {
+ .init = qp_rgb565_surface_init,
+ .power = qp_rgb565_surface_power,
+ .clear = qp_rgb565_surface_clear,
+ .flush = qp_rgb565_surface_flush,
+ .pixdata = qp_rgb565_surface_pixdata,
+ .viewport = qp_rgb565_surface_viewport,
+ .palette_convert = qp_rgb565_surface_palette_convert_rgb565_swapped,
+ .append_pixels = qp_rgb565_surface_append_pixels_rgb565,
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Comms vtable
+
+static bool qp_rgb565_surface_comms_init(painter_device_t device) {
+ // No-op.
+ return true;
+}
+static bool qp_rgb565_surface_comms_start(painter_device_t device) {
+ // No-op.
+ return true;
+}
+static void qp_rgb565_surface_comms_stop(painter_device_t device) {
+ // No-op.
+}
+uint32_t qp_rgb565_surface_comms_send(painter_device_t device, const void *data, uint32_t byte_count) {
+ // No-op.
+ return byte_count;
+}
+
+struct painter_comms_vtable_t rgb565_surface_driver_comms_vtable = {
+ // These are all effective no-op's because they're not actually needed.
+ .comms_init = qp_rgb565_surface_comms_init,
+ .comms_start = qp_rgb565_surface_comms_start,
+ .comms_stop = qp_rgb565_surface_comms_stop,
+ .comms_send = qp_rgb565_surface_comms_send};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Factory function for creating a handle to an rgb565 surface
+
+painter_device_t qp_rgb565_make_surface(uint16_t panel_width, uint16_t panel_height, void *buffer) {
+ for (uint32_t i = 0; i < RGB565_SURFACE_NUM_DEVICES; ++i) {
+ rgb565_surface_painter_device_t *driver = &surface_drivers[i];
+ if (!driver->base.driver_vtable) {
+ driver->base.driver_vtable = &rgb565_surface_driver_vtable;
+ driver->base.comms_vtable = &rgb565_surface_driver_comms_vtable;
+ driver->base.native_bits_per_pixel = 16; // RGB565
+ driver->base.panel_width = panel_width;
+ driver->base.panel_height = panel_height;
+ driver->base.rotation = QP_ROTATION_0;
+ driver->base.offset_x = 0;
+ driver->base.offset_y = 0;
+ driver->buffer = (uint16_t *)buffer;
+ return (painter_device_t)driver;
+ }
+ }
+ return NULL;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Drawing routine to copy out the dirty region and send it to another device
+
+bool qp_rgb565_surface_draw(painter_device_t surface, painter_device_t display, uint16_t x, uint16_t y) {
+ struct painter_driver_t * surface_driver = (struct painter_driver_t *)surface;
+ rgb565_surface_painter_device_t *surface_handle = (rgb565_surface_painter_device_t *)surface_driver;
+
+ // If we're not dirty... we're done.
+ if (!surface_handle->is_dirty) {
+ return true;
+ }
+
+ // Set the target drawing area
+ bool ok = qp_viewport(display, x + surface_handle->dirty_l, y + surface_handle->dirty_t, x + surface_handle->dirty_r, y + surface_handle->dirty_b);
+ if (!ok) {
+ return false;
+ }
+
+ // Housekeeping of the amount of pixels to transfer
+ uint32_t total_pixel_count = QUANTUM_PAINTER_PIXDATA_BUFFER_SIZE / sizeof(uint16_t);
+ uint32_t pixel_counter = 0;
+ uint16_t *target_buffer = (uint16_t *)qp_internal_global_pixdata_buffer;
+
+ // Fill the global pixdata area so that we can start transferring to the panel
+ for (uint16_t y = surface_handle->dirty_t; y <= surface_handle->dirty_b; ++y) {
+ for (uint16_t x = surface_handle->dirty_l; x <= surface_handle->dirty_r; ++x) {
+ // Update the target buffer
+ target_buffer[pixel_counter++] = surface_handle->buffer[y * surface_handle->base.panel_width + x];
+
+ // If we've accumulated enough data, send it
+ if (pixel_counter == total_pixel_count) {
+ ok = qp_pixdata(display, qp_internal_global_pixdata_buffer, pixel_counter);
+ if (!ok) {
+ return false;
+ }
+ // Reset the counter
+ pixel_counter = 0;
+ }
+ }
+ }
+
+ // If there's any leftover data, send it
+ if (pixel_counter > 0) {
+ ok = qp_pixdata(display, qp_internal_global_pixdata_buffer, pixel_counter);
+ if (!ok) {
+ return false;
+ }
+ }
+
+ // Clear the dirty info for the surface
+ return qp_flush(surface);
+}
diff --git a/drivers/painter/generic/qp_rgb565_surface.h b/drivers/painter/generic/qp_rgb565_surface.h
new file mode 100644
index 0000000000..19e919bb91
--- /dev/null
+++ b/drivers/painter/generic/qp_rgb565_surface.h
@@ -0,0 +1,42 @@
+// Copyright 2022 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include "qp_internal.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Quantum Painter RGB565 surface configurables (add to your keyboard's config.h)
+
+#ifndef RGB565_SURFACE_NUM_DEVICES
+/**
+ * @def This controls the maximum number of surface devices that Quantum Painter can use at any one time.
+ * Increasing this number allows for multiple framebuffers to be used. Each requires its own RAM allocation.
+ */
+# define RGB565_SURFACE_NUM_DEVICES 1
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Forward declarations
+
+#ifdef QUANTUM_PAINTER_RGB565_SURFACE_ENABLE
+/**
+ * Factory method for an RGB565 surface (aka framebuffer).
+ *
+ * @param panel_width[in] the width of the display panel
+ * @param panel_height[in] the height of the display panel
+ * @param buffer[in] pointer to a preallocated buffer of size `(sizeof(uint16_t) * panel_width * panel_height)`
+ * @return the device handle used with all drawing routines in Quantum Painter
+ */
+painter_device_t qp_rgb565_make_surface(uint16_t panel_width, uint16_t panel_height, void *buffer);
+
+/**
+ * Helper method to draw the dirty contents of the framebuffer to the target device.
+ *
+ * After successful completion, the dirty area is reset.
+ *
+ * @param surface[in] the surface to copy from
+ * @param display[in] the display to copy into
+ * @param x[in] the x-location of the original position of the framebuffer
+ * @param y[in] the y-location of the original position of the framebuffer
+ * @return whether the draw operation completed successfully
+ */
+bool qp_rgb565_surface_draw(painter_device_t surface, painter_device_t display, uint16_t x, uint16_t y);
+#endif // QUANTUM_PAINTER_RGB565_SURFACE_ENABLE
diff --git a/drivers/painter/tft_panel/qp_tft_panel.c b/drivers/painter/tft_panel/qp_tft_panel.c
index ad83b6c792..e7c744ab34 100644
--- a/drivers/painter/tft_panel/qp_tft_panel.c
+++ b/drivers/painter/tft_panel/qp_tft_panel.c
@@ -7,8 +7,6 @@
#include "qp_draw.h"
#include "qp_tft_panel.h"
-#define BYTE_SWAP(x) (((((uint16_t)(x)) >> 8) & 0x00FF) | ((((uint16_t)(x)) << 8) & 0xFF00))
-
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Quantum Painter API implementations
@@ -94,7 +92,7 @@ bool qp_tft_panel_palette_convert_rgb565_swapped(painter_device_t device, int16_
for (int16_t i = 0; i < palette_size; ++i) {
RGB rgb = hsv_to_rgb_nocie((HSV){palette[i].hsv888.h, palette[i].hsv888.s, palette[i].hsv888.v});
uint16_t rgb565 = (((uint16_t)rgb.r) >> 3) << 11 | (((uint16_t)rgb.g) >> 2) << 5 | (((uint16_t)rgb.b) >> 3);
- palette[i].rgb565 = BYTE_SWAP(rgb565);
+ palette[i].rgb565 = __builtin_bswap16(rgb565);
}
return true;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 00:59:21 +0000