1cf5bf514a
This change finally introduces gray image rendering with bopti. This is the final iteration of bopti v2 and certainly the fastest so far. All four profiles are supported, without change to the format.
51 lines
1.9 KiB
C
51 lines
1.9 KiB
C
//---
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// display:fx - Internal definitions for the display module on fx9860g
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//---
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#ifndef DISPLAY_FX
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#define DISPLAY_FX
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#include <gint/defs/types.h>
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#include <gint/display.h>
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/* masks() - compute the vram masks for a given rectangle
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Since the VRAM is line-based with four uin32_t elements per row, we can
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execute any operation on a rectangle by running it on each set of four
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uint32_t elements.
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This function calculates four uint32_t values and stores them in @mask. Each
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of the 128 bits in this array represents a column of the screen, and the bit
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of column c is 1 iff x1 <= c <= x2.
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These masks can then be and-ed/or-ed/anything on the VRAM to draw.
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@x1 @x2 Targeted screen range, horizontally (both included)
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@masks Stores the result of the function (four uint32_t values) */
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void masks(int x1, int x2, uint32_t *masks);
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/* bopti_render_clip() - render a bopti image with clipping
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@x @y Location of the top-left corner
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@img Image encoded by [fxconv]
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@left @top @w @h Bounding box to render
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@v1 @v2 VRAMs
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@bopti_asm Rendering function */
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void bopti_render_clip(int x, int y, image_t const *img, int left, int top,
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int w, int h, uint32_t *v1, uint32_t *v2, void *bopti_asm);
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/* bopti_render_noclip() - render a bopti image without clipping
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This function is only ever slightly faster than bopti_render_clip(),
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eliminating two types of coordinate checks:
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1. The bounding box does not overflow from the image
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2. The final rendering does not overflow from the screen
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@x @y Location of the top-left corner
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@img Image encoded by [fxconv]
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@left @top @w @h Bounding box to render
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@v1 @v2 VRAMs
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@bopti_asm Rendering function */
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void bopti_render_noclip(int x, int y, image_t const *img, int left, int top,
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int w, int h, uint32_t *v1, uint32_t *v2, void *bopti_asm);
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#endif /* DISPLAY_FX */
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