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Add more settings

This commit is contained in:
Miloslav Číž 2018-09-21 08:48:15 +02:00
parent 912b86a27d
commit c7bbf667ca

View file

@ -70,6 +70,17 @@
2: octagonal approximation (LQ) */
#endif
#ifndef RCL_COMPUTE_FLOOR_DEPTH
#define RCL_COMPUTE_FLOOR_DEPTH 1 /**< Whether depth should be computed for
floor pixels - turns this off if not
needed. */
#endif
#ifndef RCL_COMPUTE_CEILING_DEPTH
#define RCL_COMPUTE_CEILING_DEPTH 1 /**< AS RCL_COMPUTE_FLOOR_DEPTH but for
ceiling. */
#endif
#ifndef RCL_ROLL_TEXTURE_COORDS
#define RCL_ROLL_TEXTURE_COORDS 1 /**< Says whether rolling doors should also
roll the texture coordinates along (mostly
@ -308,7 +319,8 @@ void RCL_castRaysMultiHit(RCL_Camera cam, RCL_ArrayFunction arrayFunc,
RCL_RayConstraints constraints);
/**
Using provided functions, renders a complete complex camera view.
Using provided functions, renders a complete complex (multilevel) camera
view.
This function should render each screen pixel exactly once.
@ -333,16 +345,14 @@ void RCL_castRaysMultiHit(RCL_Camera cam, RCL_ArrayFunction arrayFunc,
@param pixelFunc callback function to draw a single pixel on screen
@param constraints constraints for each cast ray
*/
void RCL_render(RCL_Camera cam, RCL_ArrayFunction floorHeightFunc,
void RCL_renderComplex(RCL_Camera cam, RCL_ArrayFunction floorHeightFunc,
RCL_ArrayFunction ceilingHeightFunc, RCL_ArrayFunction typeFunction,
RCL_RayConstraints constraints);
/**
Renders given camera view, with help of provided functions. This function is
simpler and faster than RCL_render(...) and is meant to be rendering scenes
with simple 1-intersection raycasting. The RCL_render(...) function can give
more accurate results than this function, so it's to be considered even for
simple scenes.
simpler and faster than RCL_renderComplex(...) and is meant to be rendering
flat levels.
function rendering summary:
- performance: faster
@ -949,7 +959,7 @@ RCL_Unit RCL_adjustDistance(RCL_Unit distance, RCL_Camera *camera,
// ^ prevent division by zero
}
void _columnFunction(RCL_HitResult *hits, uint16_t hitCount, uint16_t x,
void _columnFunctionComplex(RCL_HitResult *hits, uint16_t hitCount, uint16_t x,
RCL_Ray ray)
{
// last written Y position, can never go backwards
@ -1016,13 +1026,15 @@ void _columnFunction(RCL_HitResult *hits, uint16_t hitCount, uint16_t x,
#define VERTICAL_DEPTH_MULTIPLY 2
#define drawHorizontal(pref,l1,l2,comp,inc)\
p.depth += RCL_absVal(pref##Z1World) * VERTICAL_DEPTH_MULTIPLY;\
#define drawHorizontal(pref,l1,l2,comp,inc,compDepth)\
if (compDepth)\
p.depth += RCL_absVal(pref##Z1World) * VERTICAL_DEPTH_MULTIPLY;\
limit = RCL_clamp(pref##Z1Screen,l1,l2);\
for (i = pref##PosY inc 1; i comp##= limit; inc##inc i)\
{\
p.position.y = i;\
p.depth += _RCL_horizontalDepthStep;\
if (compDepth)\
p.depth += _RCL_horizontalDepthStep;\
RCL_PIXEL_FUNCTION(&p);\
}\
if (pref##PosY comp limit)\
@ -1033,17 +1045,27 @@ void _columnFunction(RCL_HitResult *hits, uint16_t hitCount, uint16_t x,
// draw floor until wall
p.isFloor = 1;
#if RCL_COMPUTE_FLOOR_DEPTH == 1
p.depth = (_RCL_fHorizontalDepthStart - fPosY) * _RCL_horizontalDepthStep;
drawHorizontal(f,cPosY + 1,_RCL_camera.resolution.y,>,-)
// ^ purposfully allow outside screen bounds here
#else
p.depth = 0;
#endif
drawHorizontal(f,cPosY + 1,_RCL_camera.resolution.y,>,-,
RCL_COMPUTE_FLOOR_DEPTH) // ^ purposfully allow outside screen bounds
if (_RCL_ceilFunction != 0 || drawingHorizon)
{
// draw ceiling until wall
p.isFloor = 0;
#if RCL_COMPUTE_CEILING_DEPTH == 1
p.depth = (cPosY - _RCL_cHorizontalDepthStart) *
_RCL_horizontalDepthStep;
drawHorizontal(c,-1,fPosY - 1,<,+)
#endif
drawHorizontal(c,-1,fPosY - 1,<,+,RCL_COMPUTE_CEILING_DEPTH)
// ^ purposfully allow outside screen bounds here
}
@ -1228,7 +1250,10 @@ void _columnFunctionSimple(RCL_HitResult *hits, uint16_t hitCount, uint16_t x,
p.position.y = y;
RCL_PIXEL_FUNCTION(&p);
++y;
#if RCL_COMPUTE_CEILING_DEPTH == 1
p.depth += _RCL_horizontalDepthStep;
#endif
}
// draw wall
@ -1284,7 +1309,10 @@ RCL_Unit coordStep = 1;
// draw floor
p.isWall = 0;
#if RCL_COMPUTE_FLOOR_DEPTH == 1
p.depth = (_RCL_camera.resolution.y - y) * _RCL_horizontalDepthStep + 1;
#endif
#if RCL_COMPUTE_FLOOR_TEXCOORDS == 1
RCL_Unit dx = p.hit.position.x - _RCL_camera.position.x;
@ -1315,14 +1343,16 @@ RCL_Unit coordStep = 1;
++y;
#if RCL_COMPUTE_FLOOR_DEPTH == 1
p.depth -= _RCL_horizontalDepthStep;
#endif
if (p.depth < 0) // just in case
p.depth = 0;
}
}
void RCL_render(RCL_Camera cam, RCL_ArrayFunction floorHeightFunc,
void RCL_renderComplex(RCL_Camera cam, RCL_ArrayFunction floorHeightFunc,
RCL_ArrayFunction ceilingHeightFunc, RCL_ArrayFunction typeFunction,
RCL_RayConstraints constraints)
{
@ -1352,7 +1382,7 @@ void RCL_render(RCL_Camera cam, RCL_ArrayFunction floorHeightFunc,
_RCL_horizontalDepthStep = HORIZON_DEPTH / cam.resolution.y;
RCL_castRaysMultiHit(cam,_floorCeilFunction,typeFunction,
_columnFunction,constraints);
_columnFunctionComplex,constraints);
}
void RCL_renderSimple(RCL_Camera cam, RCL_ArrayFunction floorHeightFunc,