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
1.7 KiB
C
51 lines
1.7 KiB
C
//---
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// gint:render-fx:bopti-asm - Assembler drawing routines for bopti
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//---
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#ifndef GINT_RENDERFX_BOPTIASM
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#define GINT_RENDERFX_BOPTIASM
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/* pair_t: A pair of consecutive VRAM longwords */
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typedef struct {
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uint32_t l;
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uint32_t r;
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} pair_t;
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/* quadr_t: Two pairs for light and gray VRAMs */
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typedef struct {
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uint32_t l1;
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uint32_t r1;
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uint32_t l2;
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uint32_t r2;
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} quadr_t;
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/* Signature of mono rendering functions */
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typedef pair_t asm_mono_t(pair_t p, void **layer, uint32_t *masks, int x);
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/* Signature of gray rendering functions */
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typedef void asm_gray_t(quadr_t q, void **layer, uint32_t *masks, int x,
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quadr_t *ret);
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/* Each of the following rendering functions:
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1. Takes VRAM data for two longword positions of the screen.
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2. Reads data for one longword position of the image from *layer. This
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consists in n longwords where n is the number of layers in the image.
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3. Increments *layer by 4*n.
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4. Shifts the image data and apply it to the VRAM positions in accordance
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with the two masks given in the masks argument. */
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/* bopti_asm_mono(): Rendering function for the "mono" profile */
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extern asm_mono_t bopti_asm_mono;
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/* bopti_asm_mono_alpha(): Rendering function for the "mono alpha" profile */
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extern asm_mono_t bopti_asm_mono_alpha;
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/* bopti_gasm_mono(): "mono" profile on gray VRAMs */
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extern asm_gray_t bopti_gasm_mono;
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/* bopti_gasm_mono_alpha(): "mono alpha" profile on gray VRAMs */
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extern asm_gray_t bopti_gasm_mono_alpha;
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/* bopti_asm_gray(): Rendering function for the "gray" profile */
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extern asm_gray_t bopti_gasm_gray;
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/* bpoti_asm_gray_alpha(): Rendering function for the "gray alpha" profile */
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extern asm_gray_t bopti_gasm_gray_alpha;
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#endif /* GINT_RENDERFX_BOPTIASM */
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