commit 50e059333d1b70163c0296cf5c83230043c86bc8
Author: xoel <x.otero@udc.es>
Date: Thu, 3 Aug 2023 18:36:49 +0200
xanela baleira e debuxar
Diffstat:
13 files changed, 302 insertions(+), 0 deletions(-)
diff --git a/01-Xanela Baleira/Makefile b/01-Xanela Baleira/Makefile
@@ -0,0 +1,15 @@
+EXEC := test
+CFLAGS := -Wall
+LDFLAGS :=
+LIBS := -lSDL2 -lm
+CC := gcc
+SRCS := xanela.c
+OBX := $(SRCS:.c=.o)
+
+all: $(EXEC)
+$(EXEC): ${OBX}
+ $(CC) $(LDFLAGS) $^ -o $@ $(LIBS)
+$(OBX): ${EXEC}
+ $(CC) $(CFLAGS) $< -c -o $@
+clean:
+ rm -f $(EXEC) $(OBX)
diff --git a/01-Xanela Baleira/test b/01-Xanela Baleira/test
Binary files differ.
diff --git a/01-Xanela Baleira/xanela.c b/01-Xanela Baleira/xanela.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <SDL2/SDL.h>
+
+SDL_Renderer* rend;
+SDL_Window* win;
+
+int eventos(){
+ SDL_Event e;
+ while (SDL_PollEvent(&e) != 0)
+ switch (e.type) {
+ case SDL_QUIT:
+ printf("Pechase\n");
+ return 1;
+ }
+ return 0;
+}
+
+int debuxar(){
+ SDL_RenderClear(rend);
+ SDL_RenderPresent(rend);
+ return 0;
+}
+
+
+int main(){
+ SDL_Init(SDL_INIT_VIDEO);
+ win = SDL_CreateWindow("Xogo",
+ SDL_WINDOWPOS_CENTERED,
+ SDL_WINDOWPOS_CENTERED,
+ 200, 150, 0);
+
+ Uint32 render_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC;
+ rend = SDL_CreateRenderer(win, -1, render_flags);
+
+ for(;;) {
+ if ( eventos() == 1 )
+ break;
+ debuxar();
+ }
+ return 0;
+}
diff --git a/01-Xanela Baleira/xanela.o b/01-Xanela Baleira/xanela.o
Binary files differ.
diff --git a/02-Debuxar Formas/Makefile b/02-Debuxar Formas/Makefile
@@ -0,0 +1,19 @@
+EXEC := test
+CFLAGS := -Wall
+LDFLAGS :=
+LIBS := -lSDL2 -lm
+CC := gcc
+#SRCS := $(wildcard *.c)
+# Asignar a SRCS o nome do ficheiro fornte a compilar
+SRCS := debuxar3.c
+OBX := $(SRCS:.c=.o)
+
+all: $(EXEC)
+$(EXEC): ${OBX}
+ $(CC) $(LDFLAGS) $^ -o $@ $(LIBS)
+$(OBX): ${SRCS}
+ $(CC) $(CFLAGS) $< -c -o $@
+clean:
+ rm -f $(EXEC) $(OBX)
+
+#.PHONY: clean
diff --git a/02-Debuxar Formas/debuxar.c b/02-Debuxar Formas/debuxar.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <SDL2/SDL.h>
+#define MIN(A,B) ((A>B)?A:B)
+
+SDL_Renderer* rend;
+SDL_Window* win;
+SDL_Surface* s;
+
+void debuxar_rectangulo(SDL_Surface* s, SDL_Point p1, SDL_Point p2, uint8_t cor){
+ // p1 (esquina superior esquerda) p2 (esquina inferior dereita)
+ uint8_t* offscreen = (uint8_t*)s->pixels;
+ offscreen += (s->pitch*p1.y); // Situamolo na primeira fila a debuxar
+ for (int i = p1.y; i<=MIN(s->h, p2.y); i++){
+ for (int j = p1.x; j<=MIN(s->w, p2.x); j++){
+ offscreen[j] = cor;
+ }
+ offscreen += s->pitch;
+ }
+}
+
+int eventos(){
+ SDL_Event e;
+ while (SDL_PollEvent(&e) != 0) {
+ switch (e.type) {
+ case SDL_QUIT:
+ printf("Pechase");
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int debuxar(){
+ SDL_RenderClear(rend);
+ SDL_Point p1 = {.x = 0, .y = 0};
+ SDL_Point p2 = {.x = 20, .y = 20};
+ debuxar_rectangulo(s, p1, p2, 1);
+ SDL_Texture* tex = SDL_CreateTextureFromSurface(rend, s);
+ SDL_Rect dst = {.x = 0, .y = 0, .w = 20, .h = 20};
+ SDL_RenderCopy(rend, tex, NULL, &dst);
+ SDL_DestroyTexture(tex);
+
+ SDL_RenderPresent(rend);
+ return 0;
+}
+
+
+int main(){
+ SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_AUDIO);
+ win = SDL_CreateWindow("Xogo",
+ SDL_WINDOWPOS_CENTERED,
+ SDL_WINDOWPOS_CENTERED,
+ 400, 300, 0);
+
+ //s = SDL_CreateRGBSurface(0, 20, 20, 32, 0, 0, 0, 255);
+
+ Uint32 render_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC;
+ rend = SDL_CreateRenderer(win, -1, render_flags);
+
+ for(;;) {
+ if ( eventos() == 1 )
+ break;
+ debuxar();
+ }
+ SDL_Quit();
+ return 0;
+}
diff --git a/02-Debuxar Formas/debuxar2.c b/02-Debuxar Formas/debuxar2.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <SDL2/SDL.h>
+
+int eventos(){
+ SDL_Event e;
+ while (SDL_PollEvent(&e) != 0) {
+ switch (e.type) {
+ case SDL_QUIT:
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int debuxar(SDL_Renderer* rend, SDL_Texture* tex){
+ SDL_RenderClear(rend);
+ SDL_RenderCopy(rend, tex, NULL, NULL);
+ SDL_RenderPresent(rend);
+ return 0;
+}
+
+
+int main(){
+ SDL_Renderer* rend;
+ SDL_Window* win;
+ SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_AUDIO);
+ win = SDL_CreateWindow("Debuxar",
+ SDL_WINDOWPOS_CENTERED,
+ SDL_WINDOWPOS_CENTERED,
+ 640, 480, 0);
+
+ Uint32 render_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC;
+ rend = SDL_CreateRenderer(win, -1, render_flags);
+ //SDL_Texture* tex = SDL_CreateTexture(rend, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, 640, 480);
+ //uint32_t* pixels = malloc(640 * 480 * sizeof(uint32_t));
+ //uint32_t valor = 0xffff0000;
+ //memset(pixels, valor, 640 * 480 * sizeof(uint32_t));
+ //SDL_UpdateTexture(tex, NULL, pixels, 640 * sizeof(uint32_t));
+ for(;;) {
+ if ( eventos() == 1 ) break;
+ SDL_RenderClear(rend);
+ SDL_RenderCopy(rend, tex, NULL, NULL);
+ //valor -= 1000;
+ //printf("Valor : %x\n", valor);
+ //memset(pixels, valor, 640 * 480 * sizeof(uint32_t));
+ //SDL_UpdateTexture(tex, NULL, pixels, 640 * sizeof(uint32_t));
+ SDL_RenderPresent(rend);
+ }
+ free(pixels);
+ SDL_DestroyTexture(tex);
+ SDL_DestroyRenderer(rend);
+ SDL_DestroyWindow(win);
+ SDL_Quit();
+ return 0;
+}
diff --git a/02-Debuxar Formas/debuxar2.o b/02-Debuxar Formas/debuxar2.o
Binary files differ.
diff --git a/02-Debuxar Formas/debuxar3.c b/02-Debuxar Formas/debuxar3.c
@@ -0,0 +1,52 @@
+/*
+ * Debuxar sen render, modificando a superficie da xanela
+ * Autor: G. Xoel Otero
+ * zlib license
+ */
+
+#include <SDL2/SDL.h>
+#include <stdio.h>
+#define DIMX 400
+#define DIMY 300
+
+// Igual que memset pero copia 4 bytes de value tantas veces como
+// indique size na direccion de memoria indicada polo punteiro dest
+// A funcion orixinal de memset so copia 1 byte x veces nunha direccion
+void memset32( void * dest, Uint32 value, uintptr_t size ) {
+ uintptr_t i;
+ for( i = 0; i < (size & (~3)); i+=4 )
+ memcpy( ((char*)dest) + i, &value, 4 );
+}
+
+int eventos() {
+ SDL_Event e;
+ while (SDL_PollEvent(&e) != 0) {
+ switch (e.type) {
+ case SDL_QUIT:
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int main() {
+ SDL_Init(SDL_INIT_EVERYTHING);
+ SDL_Window *win = SDL_CreateWindow("debuxar", SDL_WINDOWPOS_UNDEFINED,
+ SDL_WINDOWPOS_UNDEFINED, 400, 300, 0);
+ SDL_Surface *window_surface = SDL_GetWindowSurface(win);
+ Uint32* buffer = (Uint32*) window_surface->pixels;
+ Uint32 cor = SDL_MapRGBA(window_surface->format, 255, 0, 0, 255);
+ memset32(buffer, cor, 400 * 300 * 4);
+ printf("Cor: %x\n", cor);
+ for(;;) {
+ if ( eventos() ) break;
+ SDL_UpdateWindowSurface(win);
+ cor += 0x00000100;
+ cor -= 0x01000000;
+ cor &= 0xff00ffff;
+ printf("cor: %x \n", cor);
+ memset32(buffer, cor, 400 * 300 * 4);
+ }
+ SDL_Quit();
+ return 0;
+}
diff --git a/02-Debuxar Formas/debuxar3.o b/02-Debuxar Formas/debuxar3.o
Binary files differ.
diff --git a/02-Debuxar Formas/debuxar4.c b/02-Debuxar Formas/debuxar4.c
@@ -0,0 +1,53 @@
+/*
+ * Debuxar sen render, modificando a superficie da xanela
+ * Autor: G. Xoel Otero
+ * zlib license
+ */
+
+#include <SDL2/SDL.h>
+#include <stdio.h>
+#define DIMX 400
+#define DIMY 300
+
+// Igual que memset pero copia 4 bytes de value tantas veces como
+// indique size na direccion de memoria indicada polo punteiro dest
+// A funcion orixinal de memset so copia 1 byte x veces nunha direccion
+void memset32( void * dest, Uint32 value, uintptr_t size ) {
+ uintptr_t i;
+ for( i = 0; i < (size & (~3)); i+=4 )
+ memcpy( ((char*)dest) + i, &value, 4 );
+}
+
+int eventos() {
+ SDL_Event e;
+ while (SDL_PollEvent(&e) != 0) {
+ switch (e.type) {
+ case SDL_QUIT:
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int main() {
+ SDL_Init(SDL_INIT_EVERYTHING);
+ SDL_Window *win = SDL_CreateWindow("debuxar", SDL_WINDOWPOS_UNDEFINED,
+ SDL_WINDOWPOS_UNDEFINED, 400, 300, 0);
+ SDL_Surface *window_surface = SDL_GetWindowSurface(win);
+ SDL_Surface *canvas = SDL_CreateRGBSurfaceWithFormat(
+ 0, DIMX, DIMY, 32, SDL_PIXELFORMAT_RGBA8888);
+
+ Uint32* buffer = (Uint32*) canvas->pixels;
+ Uint32 cor = SDL_MapRGBA(canvas->format, 0, 0, 255, 255);
+ SDL_LockSurface(window_surface);
+ memset32(buffer, cor, 400 * 300 * 4);
+ SDL_UnlockSurface(window_surface);
+
+ for(;;) {
+ if ( eventos() ) break;
+ SDL_BlitSurface(canvas, 0, window_surface, 0);
+ SDL_UpdateWindowSurface(win);
+ }
+ SDL_Quit();
+ return 0;
+}
diff --git a/02-Debuxar Formas/debuxar4.o b/02-Debuxar Formas/debuxar4.o
Binary files differ.
diff --git a/02-Debuxar Formas/test b/02-Debuxar Formas/test
Binary files differ.
