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framebuffer resizing + handle init failure

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This commit is contained in:
Bigfoot71 2025-03-19 02:04:59 +01:00
parent 06e49a048a
commit fe600a5ea1
1 changed files with 78 additions and 21 deletions
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93
src/external/rlsw.h vendored
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@ -35,6 +35,10 @@
# define SW_MALLOC(sz) malloc(sz)
#endif
#ifndef SW_REALLOC
# define SW_REALLOC(ptr, newSz) realloc(ptr, newSz)
#endif
#ifndef SW_FREE
# define SW_FREE(ptr) free(ptr)
#endif
@ -273,10 +277,11 @@ typedef enum {
/* === Public API === */
void swInit(int w, int h);
bool swInit(int w, int h);
void swClose(void);
void* swGetColorBuffer(int* w, int* h);
bool swResizeFramebuffer(int w, int h);
void swEnable(SWstate state);
void swDisable(SWstate state);
@ -447,7 +452,9 @@ typedef struct {
typedef struct {
void *color;
void *depth;
int width, height;
int width;
int height;
int allocSz;
} sw_framebuffer_t;
typedef struct {
@ -510,12 +517,12 @@ typedef struct {
uint32_t stateFlags;
} sw_data_t;
} sw_context_t;
/* === Global Data === */
static sw_data_t RLSW = { 0 };
static sw_context_t RLSW = { 0 };
/* === Helper Functions === */
@ -597,14 +604,47 @@ static inline sw_vertex_t sw_lerp_vertex_PNTCH(const sw_vertex_t* a, const sw_ve
/* === Framebuffer Part === */
static inline void sw_framebuffer_load(void** color, void** depth, int w, int h)
static inline bool sw_framebuffer_load(int w, int h)
{
int size = w * h;
*color = SW_MALLOC(SW_COLOR_PIXEL_SIZE * size);
*depth = SW_MALLOC(SW_DEPTH_PIXEL_SIZE * size);
RLSW.framebuffer.color = SW_MALLOC(SW_COLOR_PIXEL_SIZE * size);
if (RLSW.framebuffer.color == NULL) return false;
// TODO: Handle memory allocation failure
RLSW.framebuffer.depth = SW_MALLOC(SW_DEPTH_PIXEL_SIZE * size);
if (RLSW.framebuffer.depth == NULL) return false;
RLSW.framebuffer.width = w;
RLSW.framebuffer.height = h;
RLSW.framebuffer.allocSz = w * h;
return true;
}
static inline bool sw_framebuffer_resize(int w, int h)
{
int newSize = w * h;
if (newSize <= RLSW.framebuffer.allocSz) {
RLSW.framebuffer.width = w;
RLSW.framebuffer.height = h;
return true;
}
void* newColor = SW_REALLOC(RLSW.framebuffer.color, newSize);
if (newColor == NULL) return false;
void* newDepth = SW_REALLOC(RLSW.framebuffer.depth, newSize);
if (newDepth == NULL) return false;
RLSW.framebuffer.color = newColor;
RLSW.framebuffer.depth = newDepth;
RLSW.framebuffer.width = w;
RLSW.framebuffer.height = h;
RLSW.framebuffer.allocSz = newSize;
return true;
}
static inline void* sw_framebuffer_get_color_addr(void* ptr, uint32_t offset)
@ -2529,21 +2569,19 @@ static inline bool sw_is_blend_dst_factor_valid(int blend)
/* === Public Implementation === */
void swInit(int w, int h)
bool swInit(int w, int h)
{
sw_framebuffer_load(
&RLSW.framebuffer.color,
&RLSW.framebuffer.depth,
w, h
);
RLSW.framebuffer.width = w;
RLSW.framebuffer.height = h;
if (!sw_framebuffer_load(w, h)) {
swClose(); return false;
}
swViewport(0, 0, w, h);
RLSW.loadedTextures = SW_MALLOC(SW_MAX_TEXTURES);
if (RLSW.loadedTextures == NULL) { swClose(); return false; }
RLSW.freeTextureIds = SW_MALLOC(SW_MAX_TEXTURES);
if (RLSW.loadedTextures == NULL) { swClose(); return false; }
RLSW.clearColor[0] = 0.0f;
RLSW.clearColor[1] = 0.0f;
@ -2598,15 +2636,29 @@ void swInit(int w, int h)
RLSW.loadedTextures[0].ty = 0.5f;
RLSW.loadedTextureCount = 1;
return true;
}
void swClose(void)
{
if (RLSW.framebuffer.color != NULL) {
SW_FREE(RLSW.framebuffer.color);
SW_FREE(RLSW.framebuffer.depth);
}
if (RLSW.framebuffer.depth != NULL) {
SW_FREE(RLSW.framebuffer.depth);
}
if (RLSW.loadedTextures != NULL) {
SW_FREE(RLSW.loadedTextures);
}
if (RLSW.freeTextureIds != NULL) {
SW_FREE(RLSW.freeTextureIds);
}
RLSW = (sw_context_t) { 0 };
}
void* swGetColorBuffer(int* w, int* h)
@ -2617,6 +2669,11 @@ void* swGetColorBuffer(int* w, int* h)
return RLSW.framebuffer.color;
}
bool swResizeFramebuffer(int w, int h)
{
return sw_framebuffer_resize(w, h);
}
void swEnable(SWstate state)
{
switch (state) {