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TINYGL: Added 2d blitting draft interface.

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This commit is contained in:
Stefano Musumeci 2014-07-02 19:08:47 +02:00
parent 9bf27c050d
commit 6ab14ac528
3 changed files with 106 additions and 0 deletions
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1
graphics/module.mk
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@ -51,6 +51,7 @@ MODULE_OBJS := \
tinygl/zline.o \
tinygl/zmath.o \
tinygl/ztriangle.o \
tinygl/zblit.o \
ifdef USE_SCALERS
MODULE_OBJS += \

84
graphics/tinygl/zblit.cpp Normal file
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@ -0,0 +1,84 @@
#include "graphics/tinygl/zblit.h"
#include "graphics/tinygl/zgl.h"
namespace TinyGL {
struct TinyGLBlitTexture {
public:
TinyGLBlitTexture(Graphics::PixelBuffer &buffer, int width, int height, int colorKey) {
}
Graphics::PixelBuffer dataBuffer;
int width, height;
};
void tglUploadBlitTexture(int* textureHandle, int width, int height, Graphics::PixelBuffer &buffer, int colorKey) {
}
void tglDisposeBlitTexture(int textureHandle) {
}
template <bool disableBlending, bool disableColoring, bool disableTransform>
void tglBlitGeneric(int blitTextureHandle, int dstX, int dstY, int width, int height, int srcX, int srcY, int srcWidth, int srcHeight, float rotation, float rTint, float gTint, float bTint, float aTint) {
TinyGL::GLContext* c =TinyGL::gl_get_context();
if (dstX >= c->fb->xsize|| dstY >= c->fb->ysize)
return;
int clampWidth, clampHeight;
if (dstX + width > c->fb->xsize)
clampWidth = c->fb->xsize - dstX;
else
clampWidth = width;
if (dstY + height > c->fb->ysize)
clampHeight = c->fb->ysize - dstY;
else
clampHeight = height;
TinyGLBlitTexture* texture;
Graphics::PixelBuffer srcBuf(texture->dataBuffer);
srcBuf.shiftBy(srcX + (srcY * texture->width));
for (int l = 0; l < clampHeight; l++) {
for (int r = 0; r < clampWidth; ++r) {
byte aDst, rDst, gDst, bDst;
srcBuf.getARGBAt(r, aDst, rDst, gDst, bDst);
c->fb->writePixel((dstX + r) + (dstY + l) * c->fb->xsize, aDst * aTint, rDst * rTint, gDst * gTint, bDst * bTint);
}
srcBuf.shiftBy(srcWidth);
}
}
void tglBlit(int blitTextureHandle, int dstX, int dstY, int width, int height, int srcX, int srcY, int srcWidth, int srcHeight, float rotation, float rTint, float gTint, float bTint, float aTint) {
TinyGL::GLContext* c =TinyGL::gl_get_context();
bool disableColor = aTint == 1.0f && bTint == 1.0f && gTint == 1.0f && rTint == 1.0f;
bool disableTransform = srcWidth == width && srcHeight == height && rotation == 0;
bool disableBlend = c->enableBlend == false;
if (disableColor && disableTransform && disableBlend) {
tglBlitGeneric<true, true, true>(blitTextureHandle, dstX, dstY, width, height, srcX, srcY, srcWidth, srcHeight, rotation, rTint, gTint, bTint, aTint);
} else if (disableColor && disableTransform) {
tglBlitGeneric<false, true, true>(blitTextureHandle, dstX, dstY, width, height, srcX, srcY, srcWidth, srcHeight, rotation, rTint, gTint, bTint, aTint);
} else if (disableTransform) {
tglBlitGeneric<false, false, true>(blitTextureHandle, dstX, dstY, width, height, srcX, srcY, srcWidth, srcHeight, rotation, rTint, gTint, bTint, aTint);
} else {
tglBlitGeneric<false, false, false>(blitTextureHandle, dstX, dstY, width, height, srcX, srcY, srcWidth, srcHeight, rotation, rTint, gTint, bTint, aTint);
}
}
void tglBlitNoBlend(int blitTextureHandle, int dstX, int dstY, int width, int height, int srcX, int srcY, int srcWidth, int srcHeight, float rotation, float rTint, float gTint, float bTint, float aTint) {
tglBlitGeneric<true, false, false>(blitTextureHandle, dstX, dstY, width, height, srcX, srcY, srcWidth, srcHeight, rotation, rTint, gTint, bTint, aTint);
}
void tglBlitFast(int blitTextureHandle, int x, int y, int width, int height) {
tglBlitGeneric<true, true, true>(blitTextureHandle, x, y, width, height, 0, 0, width, height, 0, 255, 255, 255 ,255);
}
}

21
graphics/tinygl/zblit.h Normal file
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@ -0,0 +1,21 @@
#ifndef _tgl_zblit_h_
#define _tgl_zblit_h_
#include "graphics/pixelbuffer.h"
namespace TinyGL {
void tglUploadBlitTexture(int* textureHandle, int width, int height, Graphics::PixelBuffer &buffer, int colorKey);
void tglDisposeBlitTexture(int textureHandle);
void tglBlit(int blitTextureHandle, int dstX, int dstY, int width, int height, int srcX, int srcY, int srcWidth, int srcHeight, float rotation = 0, float rTint = 1.0f, float gTint = 1.0f, float bTint = 1.0f, float aTint = 1.0f);
// Disables blending explicitly.
void tglBlitNoBlend(int blitTextureHandle, int dstX, int dstY, int width, int height, int srcX, int srcY, int srcWidth, int srcHeight, float rotation, float rTint, float gTint, float bTint, float aTint);
// Disables blending, transforms and tinting.
void tglBlitFast(int blitTextureHandle, int x, int y, int width, int height);
}
#endif