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Fixes #120 Implement a software renderer

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This commit is contained in:
Stefan Arentz 2017-01-08 03:59:05 +00:00
parent 139d07313d
commit 29346949cc
1 changed files with 8 additions and 9 deletions
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17
src/scr.c
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@ -32,8 +32,9 @@
#include "scr.h"
inline static void _set_pixel(SDL_Surface * surface, int x, int y, Uint32 color) {
uint32_t *pixel = (uint32_t*) ((uint8_t*) surface->pixels + (y * surface->pitch) + (x * sizeof(uint32_t)));
*pixel = color;
// TODO This will break if pitch is not very predictable or weird
uint32_t *pixel = (uint32_t*) ((uint8_t*) surface->pixels + (y * 280*3*sizeof(uint32_t)) + (x * sizeof(uint32_t)));
*pixel = color;
}
// Text rendering
@ -246,8 +247,7 @@ static SDL_Color hires_colors[16] = {
{ 255, 255, 255, 0 } // 5 White
};
inline static void scr_render_hgr_line_green(struct scr_t *scr, int line, uint16_t line_base) {
SDL_Surface *surface = SDL_GetWindowSurface(scr->window);
inline static void scr_render_hgr_line_green(struct scr_t *scr, int line, uint16_t line_base, SDL_Surface *surface) {
uint32_t green = scr->text_color;
int x = 0;
for (int i = 0; i < 40; i++) {
@ -274,7 +274,7 @@ inline static void scr_render_hgr_line_green(struct scr_t *scr, int line, uint16
}
}
inline static void scr_render_hgr_line_color(struct scr_t *scr, int line, uint16_t line_base) {
inline static void scr_render_hgr_line_color(struct scr_t *scr, int line, uint16_t line_base, SDL_Surface *surface) {
uint32_t pixels[280], x = 0;
for (int i = 0; i < 40; i++) {
uint8_t c = scr->two->screen_hgr_data[line_base + i];
@ -310,7 +310,6 @@ inline static void scr_render_hgr_line_color(struct scr_t *scr, int line, uint16
// Now draw them
SDL_Surface *surface = SDL_GetWindowSurface(scr->window);
for (x = 0; x < 280; x++) {
int px = x * 3, py = line * 3;
uint32_t color = pixels[x];
@ -330,12 +329,13 @@ inline static void scr_render_hgr_screen(struct scr_t *scr, bool flash) {
// Render graphics
int lines = (scr->two->screen_graphics_style == EWM_A2P_SCREEN_GRAPHICS_STYLE_MIXED) ? 160 : 192;
uint16_t hgr_base = hgr_page_offsets[scr->two->screen_page];
SDL_Surface *surface = SDL_GetWindowSurface(scr->window);
for (int line = 0; line < lines; line++) {
uint16_t line_base = hgr_base + hgr_line_offsets[line];
if (scr->color_scheme == EWM_SCR_COLOR_SCHEME_COLOR) {
scr_render_hgr_line_color(scr, line, line_base);
scr_render_hgr_line_color(scr, line, line_base, surface);
} else {
scr_render_hgr_line_green(scr, line, line_base);
scr_render_hgr_line_green(scr, line, line_base, surface);
}
}
@ -371,7 +371,6 @@ int ewm_scr_init(struct scr_t *scr, struct ewm_two_t *two, SDL_Window *window, S
}
for (int i = 0; i < 6; i++) {
scr->hires_colors[i] = SDL_MapRGB(surface->format, hires_colors[i].r, hires_colors[i].g, hires_colors[i].b);
printf("scr->hires_colors[%d] = 0x%x\n", i, scr->hires_colors[i]);
}
for (int i = 0; i < 16; i++) {
scr->lores_colors_color[i] = SDL_MapRGB(surface->format, lores_colors_color[i].r,