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Update SDLSurface renderer for new font batcher

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This commit is contained in:
Clownacy 2020-09-07 23:44:51 +01:00
parent 096fa3b578
commit 1d9446d425
5 changed files with 60 additions and 60 deletions
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2
src/Backends/Rendering.h
View file

@ -27,7 +27,7 @@ void RenderBackend_ColourFill(RenderBackend_Surface *surface, const RenderBacken
RenderBackend_GlyphAtlas* RenderBackend_CreateGlyphAtlas(size_t size);
void RenderBackend_DestroyGlyphAtlas(RenderBackend_GlyphAtlas *atlas);
void RenderBackend_UploadGlyph(RenderBackend_GlyphAtlas *atlas, size_t x, size_t y, const unsigned char *pixels, size_t width, size_t height);
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_Surface *destination_surface, const unsigned char *colour_channels);
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_GlyphAtlas *atlas, RenderBackend_Surface *destination_surface, const unsigned char *colour_channels);
void RenderBackend_DrawGlyph(RenderBackend_GlyphAtlas *atlas, long x, long y, size_t glyph_x, size_t glyph_y, size_t glyph_width, size_t glyph_height);
void RenderBackend_FlushGlyphs(void);
void RenderBackend_HandleRenderTargetLoss(void);

13
src/Backends/Rendering/OpenGL3.cpp
View file

@ -899,18 +899,12 @@ RenderBackend_GlyphAtlas* RenderBackend_CreateGlyphAtlas(size_t size)
void RenderBackend_DestroyGlyphAtlas(RenderBackend_GlyphAtlas *atlas)
{
if (atlas == NULL)
return;
glDeleteTextures(1, &atlas->texture_id);
free(atlas);
}
void RenderBackend_UploadGlyph(RenderBackend_GlyphAtlas *atlas, size_t x, size_t y, const unsigned char *pixels, size_t width, size_t height)
{
if (atlas == NULL)
return;
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glBindTexture(GL_TEXTURE_2D, atlas->texture_id);
#ifdef USE_OPENGLES2
@ -922,8 +916,13 @@ void RenderBackend_UploadGlyph(RenderBackend_GlyphAtlas *atlas, size_t x, size_t
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
}
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_Surface *destination_surface, const unsigned char *colour_channels)
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_GlyphAtlas *atlas, RenderBackend_Surface *destination_surface, const unsigned char *colour_channels)
{
(void)atlas;
if (destination_surface == NULL)
return;
glyph_destination_surface = destination_surface;
memcpy(glyph_colour_channels, colour_channels, sizeof(glyph_colour_channels));

93
src/Backends/Rendering/SDLSurface.cpp
View file

@ -15,10 +15,10 @@ typedef struct RenderBackend_Surface
SDL_Surface *sdlsurface;
} RenderBackend_Surface;
typedef struct RenderBackend_Glyph
typedef struct RenderBackend_GlyphAtlas
{
SDL_Surface *sdlsurface;
} RenderBackend_Glyph;
} RenderBackend_GlyphAtlas;
SDL_Window *window;
@ -26,7 +26,6 @@ static SDL_Surface *window_sdlsurface;
static RenderBackend_Surface framebuffer;
static unsigned char glyph_colour_channels[3];
static SDL_Surface *glyph_destination_sdlsurface;
static void RectToSDLRect(const RenderBackend_Rect *rect, SDL_Rect *sdl_rect)
@ -195,28 +194,44 @@ void RenderBackend_ColourFill(RenderBackend_Surface *surface, const RenderBacken
Backend_PrintError("Couldn't fill rectangle with color: %s", SDL_GetError());
}
RenderBackend_Glyph* RenderBackend_LoadGlyph(const unsigned char *pixels, unsigned int width, unsigned int height, int pitch)
RenderBackend_GlyphAtlas* RenderBackend_CreateGlyphAtlas(size_t size)
{
RenderBackend_Glyph *glyph = (RenderBackend_Glyph*)malloc(sizeof(RenderBackend_Glyph));
RenderBackend_GlyphAtlas *atlas = (RenderBackend_GlyphAtlas*)malloc(sizeof(RenderBackend_GlyphAtlas));
if (glyph == NULL)
return NULL;
glyph->sdlsurface = SDL_CreateRGBSurfaceWithFormat(0, width, height, 0, SDL_PIXELFORMAT_RGBA32);
if (glyph->sdlsurface == NULL)
if (atlas != NULL)
{
Backend_PrintError("Couldn't create RBG surface: %s", SDL_GetError());
free(glyph);
return NULL;
atlas->sdlsurface = SDL_CreateRGBSurfaceWithFormat(0, size, size, 0, SDL_PIXELFORMAT_RGBA32);
if (atlas->sdlsurface != NULL)
{
return atlas;
}
else
{
Backend_PrintError("Couldn't create RBG surface: %s", SDL_GetError());
}
free(atlas);
}
for (unsigned int y = 0; y < height; ++y)
{
const unsigned char *source_pointer = pixels + y * pitch;
unsigned char *destination_pointer = (unsigned char*)glyph->sdlsurface->pixels + y * glyph->sdlsurface->pitch;
return NULL;
}
for (unsigned int x = 0; x < width; ++x)
void RenderBackend_DestroyGlyphAtlas(RenderBackend_GlyphAtlas *atlas)
{
SDL_FreeSurface(atlas->sdlsurface);
free(atlas);
}
void RenderBackend_UploadGlyph(RenderBackend_GlyphAtlas *atlas, size_t x, size_t y, const unsigned char *pixels, size_t width, size_t height)
{
const unsigned char *source_pointer = pixels;
for (size_t iy = 0; iy < height; ++iy)
{
unsigned char *destination_pointer = &((unsigned char*)atlas->sdlsurface->pixels)[(y + iy) * atlas->sdlsurface->pitch + x * 4];
for (size_t ix = 0; ix < width; ++ix)
{
*destination_pointer++ = 0xFF;
*destination_pointer++ = 0xFF;
@ -224,44 +239,34 @@ RenderBackend_Glyph* RenderBackend_LoadGlyph(const unsigned char *pixels, unsign
*destination_pointer++ = *source_pointer++;
}
}
return glyph;
}
void RenderBackend_UnloadGlyph(RenderBackend_Glyph *glyph)
{
if (glyph == NULL)
return;
SDL_FreeSurface(glyph->sdlsurface);
free(glyph);
}
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_Surface *destination_surface, const unsigned char *colour_channels)
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_GlyphAtlas *atlas, RenderBackend_Surface *destination_surface, const unsigned char *colour_channels)
{
if (destination_surface == NULL)
return;
glyph_destination_sdlsurface = destination_surface->sdlsurface;
memcpy(glyph_colour_channels, colour_channels, sizeof(glyph_colour_channels));
if (SDL_SetSurfaceColorMod(atlas->sdlsurface, colour_channels[0], colour_channels[1], colour_channels[2]) < 0)
Backend_PrintError("Couldn't set color value: %s", SDL_GetError());
}
void RenderBackend_DrawGlyph(RenderBackend_Glyph *glyph, long x, long y)
void RenderBackend_DrawGlyph(RenderBackend_GlyphAtlas *atlas, long x, long y, size_t glyph_x, size_t glyph_y, size_t glyph_width, size_t glyph_height)
{
if (glyph == NULL)
return;
SDL_Rect source_rect;
source_rect.x = glyph_x;
source_rect.y = glyph_y;
source_rect.w = glyph_width;
source_rect.h = glyph_height;
SDL_Rect rect;
rect.x = x;
rect.y = y;
rect.w = glyph->sdlsurface->w;
rect.h = glyph->sdlsurface->h;
SDL_Rect destination_rect;
destination_rect.x = x;
destination_rect.y = y;
destination_rect.w = glyph_width;
destination_rect.h = glyph_height;
if (SDL_SetSurfaceColorMod(glyph->sdlsurface, glyph_colour_channels[0], glyph_colour_channels[1], glyph_colour_channels[2]) < 0)
Backend_PrintError("Couldn't set color value: %s", SDL_GetError());
if (SDL_BlitSurface(glyph->sdlsurface, NULL, glyph_destination_sdlsurface, &rect) < 0)
if (SDL_BlitSurface(atlas->sdlsurface, &source_rect, glyph_destination_sdlsurface, &destination_rect) < 0)
Backend_PrintError("Couldn't blit glyph indivual surface to final glyph surface: %s", SDL_GetError());
}

10
src/Backends/Rendering/Software.cpp
View file

@ -301,15 +301,14 @@ void RenderBackend_DestroyGlyphAtlas(RenderBackend_GlyphAtlas *atlas)
void RenderBackend_UploadGlyph(RenderBackend_GlyphAtlas *atlas, size_t x, size_t y, const unsigned char *pixels, size_t width, size_t height)
{
if (atlas == NULL)
return;
for (size_t i = 0; i < height; ++i)
memcpy(&atlas->pixels[(y + i) * atlas->size + x], &pixels[i * width], width);
}
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_Surface *destination_surface, const unsigned char *colour_channels)
void RenderBackend_PrepareToDrawGlyphs(RenderBackend_GlyphAtlas *atlas, RenderBackend_Surface *destination_surface, const unsigned char *colour_channels)
{
(void)atlas;
if (destination_surface == NULL)
return;
@ -320,9 +319,6 @@ void RenderBackend_PrepareToDrawGlyphs(RenderBackend_Surface *destination_surfac
void RenderBackend_DrawGlyph(RenderBackend_GlyphAtlas *atlas, long x, long y, size_t glyph_x, size_t glyph_y, size_t glyph_width, size_t glyph_height)
{
if (atlas == NULL)
return;
for (unsigned int iy = MAX(-y, 0); y + iy < MIN(y + glyph_height, glyph_destination_surface->height); ++iy)
{
for (unsigned int ix = MAX(-x, 0); x + ix < MIN(x + glyph_width, glyph_destination_surface->width); ++ix)

2
src/Font.cpp
View file

@ -1141,7 +1141,7 @@ void DrawText(FontObject *font_object, RenderBackend_Surface *surface, int x, in
{
const unsigned char colour_channels[3] = {(unsigned char)colour, (unsigned char)(colour >> 8), (unsigned char)(colour >> 16)};
RenderBackend_PrepareToDrawGlyphs(surface, colour_channels);
RenderBackend_PrepareToDrawGlyphs(font_object->atlas, surface, colour_channels);
unsigned int pen_x = 0;