From 14dab85dcae6f3762fb2b1eda4d58d8e67541330 Mon Sep 17 00:00:00 2001 From: aap Date: Thu, 11 Feb 2021 16:39:14 +0100 Subject: [PATCH] playing around with clipping; fix ps2 build --- TODO | 3 - premake5.lua | 4 -- tools/playground/main.cpp | 7 ++- tools/playground/tl_tests.cpp | 114 ++++++++++++++++++++++++++++++++-- 4 files changed, 113 insertions(+), 15 deletions(-) diff --git a/TODO b/TODO index bde3c1c..c4d8cdb 100644 --- a/TODO +++ b/TODO @@ -1,11 +1,8 @@ TODO: - tristrips -- rasters - - camera raster to image - examples - morphing - Pipelines (PDS, Xbox, PC) -- antialiasing driver - metrics diff --git a/premake5.lua b/premake5.lua index 940ee1c..1abde25 100755 --- a/premake5.lua +++ b/premake5.lua @@ -246,12 +246,8 @@ project "ps2test" files { "tools/ps2test/*.cpp", "tools/ps2test/vu/*.dsm", "tools/ps2test/*.h" } - linkoptions '$(PS2SDK)/ee/startup/crt0.o' - linkoptions { '-mno-crt0', "-T$(PS2SDK)/ee/startup/linkfile" } libdirs { "$(PS2SDK)/ee/lib" } links { "librw" } - -- "c -lc" is a hack because we need -lc twice for some reason - links { "c -lc", "kernel", "mf" } --project "ps2rastertest" -- kind "ConsoleApp" diff --git a/tools/playground/main.cpp b/tools/playground/main.cpp index ccf64a2..050e613 100644 --- a/tools/playground/main.cpp +++ b/tools/playground/main.cpp @@ -300,7 +300,8 @@ InitRW(void) Scene.camera = sk::CameraCreate(sk::globals.width, sk::globals.height, 1); camera->m_rwcam = Scene.camera; camera->m_aspectRatio = 640.0f/448.0f; - camera->m_near = 0.5f; +// camera->m_near = 0.5f; + camera->m_near = 1.5f; // camera->m_far = 450.0f; camera->m_far = 15.0f; camera->m_target.set(0.0f, 0.0f, 0.0f); @@ -456,7 +457,7 @@ Draw(float timeDelta) extern void beginSoftras(void); beginSoftras(); -// gen::tlTest(Scene.clump); + gen::tlTest(Scene.clump); void drawtest(void); // drawtest(); @@ -472,7 +473,7 @@ extern void endSoftras(void); // testfont->print("foo ABC", 200, 200, true); - rendersplines(); +// rendersplines(); camera->m_rwcam->endUpdate(); diff --git a/tools/playground/tl_tests.cpp b/tools/playground/tl_tests.cpp index 19e7f3a..7cfc59a 100644 --- a/tools/playground/tl_tests.cpp +++ b/tools/playground/tl_tests.cpp @@ -219,10 +219,10 @@ cam2screen(Im2DVertex *scrvert, CamSpace3DVertex *camvert) int32 height = cam->frameBuffer->height; recipZ = 1.0f/camvert->camVertex.z; - scrvert->setScreenX(camvert->camVertex.x * recipZ * width); - scrvert->setScreenY(camvert->camVertex.y * recipZ * height); -// scrvert->setScreenX(camvert->camVertex.x * recipZ * width/2 + width/4); -// scrvert->setScreenY(camvert->camVertex.y * recipZ * height/2 + height/4); +// scrvert->setScreenX(camvert->camVertex.x * recipZ * width); +// scrvert->setScreenY(camvert->camVertex.y * recipZ * height); + scrvert->setScreenX(camvert->camVertex.x * recipZ * width/2 + width/4); + scrvert->setScreenY(camvert->camVertex.y * recipZ * height/2 + height/4); scrvert->setScreenZ(recipZ * cam->zScale + cam->zShift); scrvert->setCameraZ(camvert->camVertex.z); scrvert->setRecipCameraZ(recipZ); @@ -493,6 +493,109 @@ clipTriangles(MeshState *mstate, CamSpace3DVertex *camverts, Im2DVertex *scrvert mstate->numPrimitives = newNumPrims; } +static int32 +clipPoly(CamSpace3DVertex *in, int32 nin, CamSpace3DVertex *out, Plane *plane) +{ + int32 j; + int32 nout; + int32 x1, x2; + float32 d1, d2, t; + + nout = 0; + for(j = 0; j < nin; j++){ + x1 = j; + x2 = (j+1) % nin; + + d1 = dot(plane->normal, in[x1].camVertex) + plane->distance; + d2 = dot(plane->normal, in[x2].camVertex) + plane->distance; + if(d1*d2 < 0.0f){ + t = d1/(d1 - d2); + interpVertex(&out[nout++], &in[x1], &in[x2], t); + } + if(d2 >= 0.0f) + out[nout++] = in[x2]; + } + return nout; +} + +static void +clipTriangles2(MeshState *mstate, CamSpace3DVertex *camverts, Im2DVertex *scrverts, uint16 *indices, uint16 *clipindices) +{ + int32 i, j; + int32 x1, x2, x3; + int32 newNumPrims; + CamSpace3DVertex buf[18]; + CamSpace3DVertex *in, *out; + int32 nout; + Camera *cam = (Camera*)engine->currentCamera; + + Plane planes[6] = { + { { 0.0f, 0.0f, 1.0f }, -cam->nearPlane }, // z = near + { { 0.0f, 0.0f, -1.0f }, cam->farPlane }, // z = far + + { { -1.0f, 0.0f, 1.0f }, 0.0f }, // x = w +// { { 1.0f, 0.0f, 1.0f }, 0.0f }, // x = -w + { { 1.0f, 0.0f, 0.0f }, 0.0f }, // x = 0 + + { { 0.0f, -1.0f, 1.0f }, 0.0f }, // y = w +// { { 0.0f, 1.0f, 1.0f }, 0.0f } // y = -1 + { { 0.0f, 1.0f, 0.0f }, 0.0f } // y = 0 + }; + + newNumPrims = 0; + for(i = 0; i < mstate->numPrimitives; i++, indices += 3){ + x1 = indices[0]; + x2 = indices[1]; + x3 = indices[2]; + + if((camverts[x1].clipFlags | + camverts[x2].clipFlags | + camverts[x3].clipFlags) == 0){ + // all inside + clipindices[0] = x1; + clipindices[1] = x2; + clipindices[2] = x3; + clipindices += 3; + newNumPrims++; + continue; + } + + // set up triangle + in = &buf[0]; + out = &buf[9]; + in[0] = camverts[x1]; + in[1] = camverts[x2]; + in[2] = camverts[x3]; + nout = 0; + + // clip here + if(nout = clipPoly(in, 3, out, &planes[0]), nout == 0) continue; + if(nout = clipPoly(out, nout, in, &planes[1]), nout == 0) continue; + if(nout = clipPoly(in, nout, out, &planes[2]), nout == 0) continue; + if(nout = clipPoly(out, nout, in, &planes[3]), nout == 0) continue; + if(nout = clipPoly(in, nout, out, &planes[4]), nout == 0) continue; + if(nout = clipPoly(out, nout, in, &planes[5]), nout == 0) continue; + out = in; + + // Insert new triangles + x1 = mstate->numVertices; + for(j = 0; j < nout; j++){ + x2 = mstate->numVertices++; + camverts[x2] = out[j]; + cam2screen(&scrverts[x2], &camverts[x2]); + } + x2 = x1+1; + for(j = 0; j < nout-2; j++){ + clipindices[0] = x1; + clipindices[1] = x2++; + clipindices[2] = x2; + clipindices += 3; + newNumPrims++; + } + } + mstate->numPrimitives = newNumPrims; +} + static void submitTriangles(RWDEVICE::Im2DVertex *scrverts, int32 numVerts, uint16 *indices, int32 numTris) { @@ -551,7 +654,8 @@ drawMesh(MeshState *mstate, ObjSpace3DVertex *objverts, uint16 *indices) scrverts = rwResizeT(Im2DVertex, scrverts, mstate->numVertices + numClip*9, MEMDUR_FUNCTION); clipindices = rwNewT(uint16, mstate->numPrimitives*3 + numClip*7*3, MEMDUR_FUNCTION); - clipTriangles(mstate, camverts, scrverts, cullindices, clipindices); +// clipTriangles(mstate, camverts, scrverts, cullindices, clipindices); + clipTriangles2(mstate, camverts, scrverts, cullindices, clipindices); submitTriangles(scrverts, mstate->numVertices, clipindices, mstate->numPrimitives);