diff options
Diffstat (limited to 'src/mesa/swrast')
| -rw-r--r-- | src/mesa/swrast/s_spantemp.h | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/src/mesa/swrast/s_spantemp.h b/src/mesa/swrast/s_spantemp.h index c48b35b90a8..df08f14760a 100644 --- a/src/mesa/swrast/s_spantemp.h +++ b/src/mesa/swrast/s_spantemp.h @@ -33,9 +33,15 @@ * SPAN_VARS to declare any local variables * INIT_PIXEL_PTR(P, X, Y) to initialize a pointer to a pixel * INC_PIXEL_PTR(P) to increment a pixel pointer by one pixel - * STORE_RGB_PIXEL(P, R, G, B) to store RGB values in pixel P - * STORE_RGBA_PIXEL(P, R, G, B, A) to store RGBA values in pixel P + * STORE_RGB_PIXEL(P, X, Y, R, G, B) to store RGB values in pixel P + * STORE_RGBA_PIXEL(P, X, Y, R, G, B, A) to store RGBA values in pixel P * FETCH_RGBA_PIXEL(R, G, B, A, P) to fetch RGBA values from pixel P + * + * Note that in the above STORE_RGBx_PIXEL macros, we also pass in the (X,Y) + * coordinates for the pixels to be stored, which enables dithering in 8-bit + * and 15/16-bit display modes. Most undithered modes or 24/32-bit display + * modes will simply ignore the passed in (X,Y) values. + * * For color index mode: * STORE_CI_PIXEL(P, CI) to store a color index in pixel P * FETCH_CI_PIXEL(CI, P) to fetch a pixel index from pixel P @@ -56,7 +62,7 @@ NAME(write_rgba_span)( const GLcontext *ctx, GLuint n, GLint x, GLint y, if (mask) { for (i = 0; i < n; i++) { if (mask[i]) { - STORE_RGBA_PIXEL(pixel, rgba[i][RCOMP], rgba[i][GCOMP], + STORE_RGBA_PIXEL(pixel, x+i, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP], rgba[i][ACOMP]); } INC_PIXEL_PTR(pixel); @@ -64,7 +70,7 @@ NAME(write_rgba_span)( const GLcontext *ctx, GLuint n, GLint x, GLint y, } else { for (i = 0; i < n; i++) { - STORE_RGBA_PIXEL(pixel, rgba[i][RCOMP], rgba[i][GCOMP], + STORE_RGBA_PIXEL(pixel, x+i, y, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP], rgba[i][ACOMP]); INC_PIXEL_PTR(pixel); } @@ -83,7 +89,7 @@ NAME(write_rgb_span)( const GLcontext *ctx, GLuint n, GLint x, GLint y, if (mask) { for (i = 0; i < n; i++) { if (mask[i]) { - STORE_RGB_PIXEL(pixel, rgb[i][RCOMP], rgb[i][GCOMP], + STORE_RGB_PIXEL(pixel, x+i, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); } INC_PIXEL_PTR(pixel); @@ -91,7 +97,7 @@ NAME(write_rgb_span)( const GLcontext *ctx, GLuint n, GLint x, GLint y, } else { for (i = 0; i < n; i++) { - STORE_RGB_PIXEL(pixel, rgb[i][RCOMP], rgb[i][GCOMP], + STORE_RGB_PIXEL(pixel, x+i, y, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); INC_PIXEL_PTR(pixel); } @@ -110,7 +116,7 @@ NAME(write_monorgba_span)( const GLcontext *ctx, GLuint n, GLint x, GLint y, if (mask) { for (i = 0; i < n; i++) { if (mask[i]) { - STORE_RGBA_PIXEL(pixel, color[RCOMP], color[GCOMP], + STORE_RGBA_PIXEL(pixel, x+i, y, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]); } INC_PIXEL_PTR(pixel); @@ -118,7 +124,7 @@ NAME(write_monorgba_span)( const GLcontext *ctx, GLuint n, GLint x, GLint y, } else { for (i = 0; i < n; i++) { - STORE_RGBA_PIXEL(pixel, color[RCOMP], color[GCOMP], + STORE_RGBA_PIXEL(pixel, x+i, y, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]); INC_PIXEL_PTR(pixel); } @@ -138,7 +144,7 @@ NAME(write_rgba_pixels)( const GLcontext *ctx, GLuint n, for (i = 0; i < n; i++) { if (mask[i]) { INIT_PIXEL_PTR(pixel, x[i], y[i]); - STORE_RGBA_PIXEL(pixel, rgba[i][RCOMP], rgba[i][GCOMP], + STORE_RGBA_PIXEL(pixel, x[i], y[i], rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP], rgba[i][ACOMP]); } } @@ -157,7 +163,7 @@ NAME(write_monorgba_pixels)( const GLcontext *ctx, for (i = 0; i < n; i++) { if (mask[i]) { INIT_PIXEL_PTR(pixel, x[i], y[i]); - STORE_RGBA_PIXEL(pixel, color[RCOMP], color[GCOMP], + STORE_RGBA_PIXEL(pixel, x[i], y[i], color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]); } } |