mirror of https://github.com/bjornbytes/lovr.git
125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
#include "api.h"
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#include "graphics/canvas.h"
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#include "graphics/graphics.h"
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Texture* luax_checktexture(lua_State* L, int index) {
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Canvas* canvas = luax_totype(L, index, Canvas);
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if (canvas) {
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const Attachment* attachment = lovrCanvasGetAttachments(canvas, NULL);
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return attachment->texture;
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} else {
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return luax_checktype(L, index, Texture);
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}
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}
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static int luax_checkattachment(lua_State* L, int index, Attachment* attachment) {
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attachment->texture = luax_checktype(L, index++, Texture);
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attachment->slice = lua_type(L, index) == LUA_TNUMBER ? lua_tointeger(L, index++) - 1 : 0;
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attachment->level = lua_type(L, index) == LUA_TNUMBER ? luax_optmipmap(L, index++, attachment->texture) : 0;
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bool isValidSlice = attachment->slice >= 0 && attachment->slice < lovrTextureGetDepth(attachment->texture, 0);
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lovrAssert(isValidSlice, "Invalid slice %d\n", attachment->slice + 1);
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return index;
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}
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int l_lovrCanvasNewTextureData(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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int index = luaL_optinteger(L, 2, 1) - 1;
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int count;
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lovrCanvasGetAttachments(canvas, &count);
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lovrAssert(index >= 0 && index < count, "Can not create a TextureData from Texture #%d of Canvas (it only has %d textures)", index, count);
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TextureData* textureData = lovrCanvasNewTextureData(canvas, index);
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luax_pushobject(L, textureData);
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lovrRelease(textureData);
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return 1;
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}
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int l_lovrCanvasRenderTo(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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luaL_checktype(L, 2, LUA_TFUNCTION);
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int argumentCount = lua_gettop(L) - 2;
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Canvas* old = lovrGraphicsGetCanvas();
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lovrGraphicsSetCanvas(canvas);
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lua_call(L, argumentCount, 0);
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lovrGraphicsSetCanvas(old);
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return 0;
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}
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int l_lovrCanvasGetTexture(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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int count;
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const Attachment* attachments = lovrCanvasGetAttachments(canvas, &count);
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for (int i = 0; i < count; i++) {
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luax_pushobject(L, attachments[i].texture);
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}
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return count;
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}
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int l_lovrCanvasSetTexture(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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Attachment attachments[MAX_CANVAS_ATTACHMENTS];
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int count;
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int index = 2;
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int top = lua_gettop(L);
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for (count = 0; count < MAX_CANVAS_ATTACHMENTS && index <= top; count++) {
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index = luax_checkattachment(L, index, attachments + count);
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}
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lovrCanvasSetAttachments(canvas, attachments, count);
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return 0;
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}
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int l_lovrCanvasGetWidth(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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lua_pushinteger(L, lovrCanvasGetWidth(canvas));
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return 1;
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}
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int l_lovrCanvasGetHeight(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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lua_pushinteger(L, lovrCanvasGetHeight(canvas));
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return 1;
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}
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int l_lovrCanvasGetDimensions(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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lua_pushinteger(L, lovrCanvasGetWidth(canvas));
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lua_pushinteger(L, lovrCanvasGetHeight(canvas));
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return 2;
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}
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int l_lovrCanvasGetDepthFormat(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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DepthFormat format = lovrCanvasGetDepthFormat(canvas);
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lua_pushstring(L, DepthFormats[format]);
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return 1;
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}
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int l_lovrCanvasGetMSAA(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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int msaa = lovrCanvasGetMSAA(canvas);
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lua_pushinteger(L, msaa);
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return 1;
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}
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int l_lovrCanvasIsStereo(lua_State* L) {
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Canvas* canvas = luax_checktype(L, 1, Canvas);
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bool stereo = lovrCanvasIsStereo(canvas);
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lua_pushboolean(L, stereo);
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return 1;
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}
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const luaL_Reg lovrCanvas[] = {
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{ "newTextureData", l_lovrCanvasNewTextureData },
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{ "renderTo", l_lovrCanvasRenderTo },
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{ "getTexture", l_lovrCanvasGetTexture },
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{ "setTexture", l_lovrCanvasSetTexture },
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{ "getWidth", l_lovrCanvasGetWidth },
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{ "getHeight", l_lovrCanvasGetHeight },
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{ "getDimensions", l_lovrCanvasGetDimensions },
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{ "getDepthFormat", l_lovrCanvasGetDepthFormat },
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{ "getMSAA", l_lovrCanvasGetMSAA },
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{ "isStereo", l_lovrCanvasIsStereo },
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{ NULL, NULL }
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};
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