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48 lines
2 KiB
C
48 lines
2 KiB
C
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/*
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* softsurface.h
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* An 8-bit rendering surface that can quickly upscale and blit 8-bit paletted buffers to an external 32-bit screen buffer.
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*
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* Copyright <EFBFBD> 2018, Alex Dawson. All rights reserved.
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*/
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#ifndef SOFTSURFACE_H_
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#define SOFTSURFACE_H_
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#include "compat.h"
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// Initialize the softsurface with the Software renderer's buffer resolution.
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// If the Software renderer's resolution and the actual resolution don't match,
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// softsurface will still render at the full size of the screen.
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// If a surface already exists, softsurface_destroy() will be automatically called before re-initializing.
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// Returns whether or not the softsurface could be successfully initialized.
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bool softsurface_initialize(vec2_t bufferResolution,
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vec2_t destBufferResolution);
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// Destroy an existing surface.
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void softsurface_destroy();
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// Sets the palette to contain the RGBA byte buffer pointed to by pPalette.
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// destRedMask/destGreenMask/destBlueMask mask the bits that represent each colour component in the destination buffer's pixel format.
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// If the surface is not initialized, the function returns immediately.
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void softsurface_setPalette(void* pPalette,
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uint32_t destRedMask,
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uint32_t destGreenMask,
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uint32_t destBlueMask);
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// Returns a pointer to the start of the surface's 8-bit pixel buffer
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// Returns NULL if the surface is not initialized.
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uint8_t* softsurface_getBuffer();
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// Returns the resolution of the surface's buffer
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vec2_t softsurface_getBufferResolution();
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// Returns the resolution of the destination buffer
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vec2_t softsurface_getDestinationBufferResolution();
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// Blit the surface's pixel buffer to the destination buffer using the palette set with softsurface_setPalette().
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// If the surface is not initialized, the function returns immediately.
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void softsurface_blitBuffer(uint32_t* destBuffer,
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uint32_t destBpp);
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#endif /* SOFTSURFACE_H_ */
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