Initial texturing changes

1 files changed, 14 insertions, 2 deletions

diff --git a/include/swgfx.h b/include/swgfx.h
index 970e3fa..4a98116 100644
--- a/include/swgfx.h
+++ b/include/swgfx.h
@@ -38,8 +38,18 @@ typedef uint16_t sgIdx;
 typedef struct   sgVertIdx { sgIdx pos, uv, normal; } sgVertIdx;
 typedef struct   sgTriIdx  { sgVertIdx v0, v1, v2;  } sgTriIdx;
 
+typedef struct sgBgra { uint8_t b, g, r, a; } sgBgra;
+typedef struct sgRgba { uint8_t r, g, b, a; } sgRgba;
 // TODO: Should we use real-valued colours?
-typedef struct sgPixel { uint8_t r, g, b, a; } sgPixel;
+typedef sgRgba sgPixel;
+// TODO: Expose a macro to control the desired surface format.
+typedef sgBgra sgScreenPixel;
+
+typedef struct sgTexture_t {
+  int      width;
+  int      height;
+  sgPixel* pixels;
+} sgTexture_t;
 
 typedef struct swgfx swgfx;
 
@@ -49,7 +59,7 @@ void   sgDel(swgfx**);
 
 // TODO: Write client app first, then implement the functions below in the C file.
 
-void sgPresent(swgfx*, sgVec2i dimensions, sgPixel* screen);
+void sgPresent(swgfx*, sgVec2i dimensions, sgScreenPixel* screen);
 
 void sgModelId    (swgfx*);
 void sgModel      (swgfx*, sgVec3 position, sgVec3 right, sgVec3 up, sgVec3 forward);
@@ -58,6 +68,8 @@ void sgOrtho      (swgfx*, R left, R right, R top, R bottom, R near, R far);
 void sgPerspective(swgfx*, R fovy, R aspect, R near, R far);
 void sgViewport   (swgfx*, int x0, int y0, int width, int height);
 
+void sgTexture(swgfx*, const sgTexture_t*);
+
 void sgClear(swgfx*);
 void sgPixels(swgfx*, size_t count, const sgVec2i* positions, sgPixel colour);
 void sgQuads (swgfx*, size_t count, const sgQuad*);