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raze/source/build/include/softsurface.h
pogokeen 1df7127609 Support software renderer upscaling engine-side in sdlayer and sdlayer12 with various scaling factors (beyond just pixel doubling).
When glsurface is available, use GL to upscale the render buffer.
Additionally, fix build issues with sdlayer12 introduced by GLAD changes (r6656).

git-svn-id: https://svn.eduke32.com/eduke32@6939 1a8010ca-5511-0410-912e-c29ae57300e0
2018-07-14 21:36:44 +00:00

47 lines
2 KiB
C

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