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Attach command buffer to Renderer Window (#1472)

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Jan 2023-06-16 16:19:52 +02:00 committed by GitHub
parent 8e71d3f050
commit dfaa7be4cc
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 41 additions and 35 deletions
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4
src/api/renderer.c
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@ -311,7 +311,7 @@ static int f_set_clip_rect(lua_State *L) {
lua_Number w = luaL_checknumber(L, 3);
lua_Number h = luaL_checknumber(L, 4);
RenRect rect = rect_to_grid(x, y, w, h);
rencache_set_clip_rect(rect);
rencache_set_clip_rect(&window_renderer, rect);
return 0;
}
@ -323,7 +323,7 @@ static int f_draw_rect(lua_State *L) {
lua_Number h = luaL_checknumber(L, 4);
RenRect rect = rect_to_grid(x, y, w, h);
RenColor color = checkcolor(L, 5, 255);
rencache_draw_rect(rect, color);
rencache_draw_rect(&window_renderer, rect, color);
return 0;
}

49
src/rencache.c
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@ -65,10 +65,7 @@ static unsigned cells_buf2[CELLS_X * CELLS_Y];
static unsigned *cells_prev = cells_buf1;
static unsigned *cells = cells_buf2;
static RenRect rect_buf[CELLS_X * CELLS_Y / 2];
size_t command_buf_size = 0;
uint8_t *command_buf = NULL;
static bool resize_issue;
static int command_buf_idx;
static RenRect screen_rect;
static RenRect last_clip_rect;
static bool show_debug;
@ -116,21 +113,21 @@ static RenRect merge_rects(RenRect a, RenRect b) {
return (RenRect) { x1, y1, x2 - x1, y2 - y1 };
}
static bool expand_command_buffer() {
size_t new_size = command_buf_size * CMD_BUF_RESIZE_RATE;
static bool expand_command_buffer(RenWindow *window_renderer) {
size_t new_size = window_renderer->command_buf_size * CMD_BUF_RESIZE_RATE;
if (new_size == 0) {
new_size = CMD_BUF_INIT_SIZE;
}
uint8_t *new_command_buf = realloc(command_buf, new_size);
uint8_t *new_command_buf = realloc(window_renderer->command_buf, new_size);
if (!new_command_buf) {
return false;
}
command_buf_size = new_size;
command_buf = new_command_buf;
window_renderer->command_buf_size = new_size;
window_renderer->command_buf = new_command_buf;
return true;
}
static void* push_command(enum CommandType type, int size) {
static void* push_command(RenWindow *window_renderer, enum CommandType type, int size) {
if (resize_issue) {
// Don't push new commands as we had problems resizing the command buffer.
// Let's wait for the next frame.
@ -139,17 +136,17 @@ static void* push_command(enum CommandType type, int size) {
size_t alignment = alignof(max_align_t) - 1;
size += COMMAND_BARE_SIZE;
size = (size + alignment) & ~alignment;
int n = command_buf_idx + size;
while (n > command_buf_size) {
if (!expand_command_buffer()) {
int n = window_renderer->command_buf_idx + size;
while (n > window_renderer->command_buf_size) {
if (!expand_command_buffer(window_renderer)) {
fprintf(stderr, "Warning: (" __FILE__ "): unable to resize command buffer (%zu)\n",
(size_t)(command_buf_size * CMD_BUF_RESIZE_RATE));
(size_t)(window_renderer->command_buf_size * CMD_BUF_RESIZE_RATE));
resize_issue = true;
return NULL;
}
}
Command *cmd = (Command*) (command_buf + command_buf_idx);
command_buf_idx = n;
Command *cmd = (Command*) (window_renderer->command_buf + window_renderer->command_buf_idx);
window_renderer->command_buf_idx = n;
memset(cmd, 0, size);
cmd->type = type;
cmd->size = size;
@ -157,13 +154,13 @@ static void* push_command(enum CommandType type, int size) {
}
static bool next_command(Command **prev) {
static bool next_command(RenWindow *window_renderer, Command **prev) {
if (*prev == NULL) {
*prev = (Command*) command_buf;
*prev = (Command*) window_renderer->command_buf;
} else {
*prev = (Command*) (((char*) *prev) + (*prev)->size);
}
return *prev != ((Command*) (command_buf + command_buf_idx));
return *prev != ((Command*) (window_renderer->command_buf + window_renderer->command_buf_idx));
}
@ -172,8 +169,8 @@ void rencache_show_debug(bool enable) {
}
void rencache_set_clip_rect(RenRect rect) {
SetClipCommand *cmd = push_command(SET_CLIP, sizeof(SetClipCommand));
void rencache_set_clip_rect(RenWindow *window_renderer, RenRect rect) {
SetClipCommand *cmd = push_command(window_renderer, SET_CLIP, sizeof(SetClipCommand));
if (cmd) {
cmd->rect = intersect_rects(rect, screen_rect);
last_clip_rect = cmd->rect;
@ -181,11 +178,11 @@ void rencache_set_clip_rect(RenRect rect) {
}
void rencache_draw_rect(RenRect rect, RenColor color) {
void rencache_draw_rect(RenWindow *window_renderer, RenRect rect, RenColor color) {
if (rect.width == 0 || rect.height == 0 || !rects_overlap(last_clip_rect, rect)) {
return;
}
DrawRectCommand *cmd = push_command(DRAW_RECT, sizeof(DrawRectCommand));
DrawRectCommand *cmd = push_command(window_renderer, DRAW_RECT, sizeof(DrawRectCommand));
if (cmd) {
cmd->rect = rect;
cmd->color = color;
@ -198,7 +195,7 @@ double rencache_draw_text(RenWindow *window_renderer, RenFont **fonts, const cha
RenRect rect = { x, y, (int)width, ren_font_group_get_height(fonts) };
if (rects_overlap(last_clip_rect, rect)) {
int sz = len + 1;
DrawTextCommand *cmd = push_command(DRAW_TEXT, sizeof(DrawTextCommand) + sz);
DrawTextCommand *cmd = push_command(window_renderer, DRAW_TEXT, sizeof(DrawTextCommand) + sz);
if (cmd) {
memcpy(cmd->text, text, sz);
cmd->color = color;
@ -265,7 +262,7 @@ void rencache_end_frame(RenWindow *window_renderer) {
/* update cells from commands */
Command *cmd = NULL;
RenRect cr = screen_rect;
while (next_command(&cmd)) {
while (next_command(window_renderer, &cmd)) {
/* cmd->command[0] should always be the Command rect */
if (cmd->type == SET_CLIP) { cr = cmd->command[0]; }
RenRect r = intersect_rects(cmd->command[0], cr);
@ -308,7 +305,7 @@ void rencache_end_frame(RenWindow *window_renderer) {
ren_set_clip_rect(window_renderer, r);
cmd = NULL;
while (next_command(&cmd)) {
while (next_command(window_renderer, &cmd)) {
SetClipCommand *ccmd = (SetClipCommand*)&cmd->command;
DrawRectCommand *rcmd = (DrawRectCommand*)&cmd->command;
DrawTextCommand *tcmd = (DrawTextCommand*)&cmd->command;
@ -341,6 +338,6 @@ void rencache_end_frame(RenWindow *window_renderer) {
unsigned *tmp = cells;
cells = cells_prev;
cells_prev = tmp;
command_buf_idx = 0;
window_renderer->command_buf_idx = 0;
}

4
src/rencache.h
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@ -6,8 +6,8 @@
#include "renderer.h"
void rencache_show_debug(bool enable);
void rencache_set_clip_rect(RenRect rect);
void rencache_draw_rect(RenRect rect, RenColor color);
void rencache_set_clip_rect(RenWindow *window_renderer, RenRect rect);
void rencache_draw_rect(RenWindow *window_renderer, RenRect rect, RenColor color);
double rencache_draw_text(RenWindow *window_renderer, RenFont **font, const char *text, size_t len, double x, int y, RenColor color);
void rencache_invalidate(void);
void rencache_begin_frame(RenWindow *window_renderer);

9
src/renderer.c
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@ -506,13 +506,11 @@ void ren_draw_rect(RenSurface *rs, RenRect rect, RenColor color) {
/*************** Window Management ****************/
void ren_free_window_resources(RenWindow *window_renderer) {
extern uint8_t *command_buf;
extern size_t command_buf_size;
renwin_free(window_renderer);
SDL_FreeSurface(draw_rect_surface);
free(command_buf);
command_buf = NULL;
command_buf_size = 0;
free(window_renderer->command_buf);
window_renderer->command_buf = NULL;
window_renderer->command_buf_size = 0;
}
// TODO remove global and return RenWindow*
@ -525,6 +523,7 @@ void ren_init(SDL_Window *win) {
}
window_renderer.window = win;
renwin_init_surface(&window_renderer);
renwin_init_command_buf(&window_renderer);
renwin_clip_to_surface(&window_renderer);
draw_rect_surface = SDL_CreateRGBSurface(0, 1, 1, 32,
0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF);

6
src/renwindow.c
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@ -45,6 +45,12 @@ void renwin_init_surface(UNUSED RenWindow *ren) {
#endif
}
void renwin_init_command_buf(RenWindow *ren) {
ren->command_buf = NULL;
ren->command_buf_idx = 0;
ren->command_buf_size = 0;
}
static RenRect scaled_rect(const RenRect rect, const int scale) {
return (RenRect) {rect.x * scale, rect.y * scale, rect.width * scale, rect.height * scale};

4
src/renwindow.h
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@ -3,6 +3,9 @@
struct RenWindow {
SDL_Window *window;
uint8_t *command_buf;
size_t command_buf_idx;
size_t command_buf_size;
#ifdef LITE_USE_SDL_RENDERER
SDL_Renderer *renderer;
SDL_Texture *texture;
@ -12,6 +15,7 @@ struct RenWindow {
typedef struct RenWindow RenWindow;
void renwin_init_surface(RenWindow *ren);
void renwin_init_command_buf(RenWindow *ren);
void renwin_clip_to_surface(RenWindow *ren);
void renwin_set_clip_rect(RenWindow *ren, RenRect rect);
void renwin_resize_surface(RenWindow *ren);