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115 lines
2.9 KiB
115 lines
2.9 KiB
4 years ago
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#pragma once
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#include <cstdint>
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#include <cstring>
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#include "engine/palette.h"
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#include "utils/attributes.h"
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namespace devilution {
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enum class BlitType : uint8_t {
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Transparent,
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Pixels,
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Fill
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};
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struct BlitCommand {
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BlitType type;
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const uint8_t *srcEnd; // Pointer past the end of the command.
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unsigned length; // Number of pixels this command will write.
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uint8_t color; // For `BlitType::Pixel` and `BlitType::Fill` only.
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};
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void BlitFillDirect(uint8_t *dst, unsigned length, uint8_t color)
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{
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std::memset(dst, color, length);
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}
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void BlitPixelsDirect(uint8_t *dst, const uint8_t *src, unsigned length)
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{
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std::memcpy(dst, src, length);
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}
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struct BlitDirect {
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void operator()(BlitCommand cmd, uint8_t *dst, const uint8_t *src)
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{
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switch (cmd.type) {
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case BlitType::Fill:
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BlitFillDirect(dst, cmd.length, cmd.color);
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return;
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case BlitType::Pixels:
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BlitPixelsDirect(dst, src, cmd.length);
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return;
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case BlitType::Transparent:
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return;
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}
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}
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};
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void BlitFillWithMap(uint8_t *dst, unsigned length, uint8_t color, const uint8_t *colorMap)
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{
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std::memset(dst, colorMap[color], length);
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}
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void BlitPixelsWithMap(uint8_t *dst, const uint8_t *src, unsigned length, const uint8_t *colorMap)
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{
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while (length-- > 0)
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*dst++ = colorMap[*src++];
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}
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struct BlitWithMap {
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const uint8_t *colorMap;
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void operator()(BlitCommand cmd, uint8_t *dst, const uint8_t *src) const
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{
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switch (cmd.type) {
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case BlitType::Fill:
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BlitFillWithMap(dst, cmd.length, cmd.color, colorMap);
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return;
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case BlitType::Pixels:
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BlitPixelsWithMap(dst, src, cmd.length, colorMap);
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return;
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case BlitType::Transparent:
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return;
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}
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}
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};
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void BlitFillBlendedWithMap(uint8_t *dst, unsigned length, uint8_t color, const uint8_t *colorMap)
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{
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color = colorMap[color];
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while (length-- > 0) {
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*dst = paletteTransparencyLookup[*dst][color];
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++dst;
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}
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}
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void BlitPixelsBlendedWithMap(uint8_t *dst, const uint8_t *src, unsigned length, const uint8_t *colorMap)
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{
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while (length-- > 0) {
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*dst = paletteTransparencyLookup[*dst][colorMap[*src++]];
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++dst;
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}
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}
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struct BlitBlendedWithMap {
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const uint8_t *colorMap;
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DVL_ALWAYS_INLINE DVL_ATTRIBUTE_HOT void operator()(BlitCommand cmd, uint8_t *dst, const uint8_t *src) const
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{
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switch (cmd.type) {
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case BlitType::Fill:
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BlitFillBlendedWithMap(dst, cmd.length, cmd.color, colorMap);
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return;
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case BlitType::Pixels:
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BlitPixelsBlendedWithMap(dst, src, cmd.length, colorMap);
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return;
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case BlitType::Transparent:
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return;
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}
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}
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};
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} // namespace devilution
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