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Fix gaps on rendered mesh during rotation

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Gaps caused by mistakenly calculating the transformation matrix per face loaded
in causing the matrix to continually update rotation prematurely.
This commit is contained in:
Doyle Thai 2017-06-08 22:38:29 +10:00
parent 285d3d2681
commit d9f50d4581
1 changed files with 41 additions and 39 deletions
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80
src/DTRendererRender.cpp
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@ -1326,6 +1326,37 @@ void DTRRender_Mesh(DTRRenderBuffer *const renderBuffer, DTRMesh *const mesh, co
{
if (!mesh) return;
DqnMat4 viewPModelViewProjection = {};
{
LOCAL_PERSIST f32 rotateDegrees = 0;
rotateDegrees += dt * 20.0f;
// Create model matrix
DqnMat4 translateMatrix = DqnMat4_Translate(pos.x, pos.y, pos.z);
DqnMat4 scaleMatrix = DqnMat4_Scale(scale, scale, scale);
DqnMat4 rotateMatrix =
DqnMat4_Rotate(DQN_DEGREES_TO_RADIANS(rotateDegrees), 0.0f, 1.0f, 0.0f);
DqnMat4 modelMatrix = DqnMat4_Mul(translateMatrix, DqnMat4_Mul(rotateMatrix, scaleMatrix));
// Create camera matrix
DqnV3 eye = DqnV3_3f(0, 0, 1);
DqnV3 up = DqnV3_3f(0, 1, 0);
DqnV3 center = DqnV3_3f(0, 0, 0);
DqnMat4 viewMatrix = DqnMat4_LookAt(eye, center, up);
// Create projection matrix
f32 aspectRatio = (f32)renderBuffer->width / (f32)renderBuffer->height;
DqnMat4 perspective = DqnMat4_Perspective(80.0f, aspectRatio, 0.5f, 100.0f);
perspective = DqnMat4_Identity();
perspective.e[2][3] = -1.0f / DqnV3_Length(eye, center);
// Combine matrix + matrix that maps NDC to screen space
DqnMat4 viewport = GLViewport(0, 0, (f32)renderBuffer->width, (f32)renderBuffer->height);
DqnMat4 modelView = DqnMat4_Mul(viewMatrix, modelMatrix);
DqnMat4 modelViewProjection = DqnMat4_Mul(perspective, modelView);
viewPModelViewProjection = DqnMat4_Mul(viewport, modelViewProjection);
}
for (u32 i = 0; i < mesh->numFaces; i++)
{
DTRMeshFace face = mesh->faces[i];
@ -1367,36 +1398,6 @@ void DTRRender_Mesh(DTRRenderBuffer *const renderBuffer, DTRMesh *const mesh, co
norm3 = mesh->normals[norm3Index];
}
// Apply vertex shader, model view projection
DqnMat4 modelMatrix = {};
{
LOCAL_PERSIST f32 rotateDegrees = 0;
rotateDegrees += (dt * 0.0025f);
rotateDegrees = 0.0f;
DqnMat4 translateMatrix = DqnMat4_Translate(pos.x, pos.y, pos.z);
DqnMat4 scaleMatrix = DqnMat4_Scale(scale, scale, scale);
DqnMat4 rotateMatrix = DqnMat4_Rotate(DQN_DEGREES_TO_RADIANS(rotateDegrees), 0.0f, 1.0f, 0.0f);
modelMatrix = DqnMat4_Mul(translateMatrix, DqnMat4_Mul(rotateMatrix, scaleMatrix));
}
DqnV3 eye = DqnV3_3f(0, 0, 1);
DqnV3 up = DqnV3_3f(0, 1, 0);
DqnV3 center = DqnV3_3f(0, 0, 0);
DqnMat4 viewMatrix = DqnMat4_LookAt(eye, center, up);
f32 aspectRatio = (f32)renderBuffer->width / (f32)renderBuffer->height;
DqnMat4 perspective = DqnMat4_Perspective(80.0f, aspectRatio, 0.5f, 100.0f);
perspective = DqnMat4_Identity();
perspective.e[2][3] = -1.0f / DqnV3_Length(eye, center);
DqnMat4 viewport = GLViewport(0, 0, (f32)renderBuffer->width, (f32)renderBuffer->height);
DqnMat4 modelView = DqnMat4_Mul(viewMatrix, modelMatrix);
DqnMat4 modelViewProjection = DqnMat4_Mul(perspective, modelView);
DqnMat4 viewPModelViewProjection = DqnMat4_Mul(viewport, modelViewProjection);
v1 = DqnMat4_MulV4(viewPModelViewProjection, v1);
v2 = DqnMat4_MulV4(viewPModelViewProjection, v2);
v3 = DqnMat4_MulV4(viewPModelViewProjection, v3);
@ -1415,16 +1416,17 @@ void DTRRender_Mesh(DTRRenderBuffer *const renderBuffer, DTRMesh *const mesh, co
v3.x = (f32)(i32)(v3.x + 0.5f);
v3.y = (f32)(i32)(v3.y + 0.5f);
i32 textureAIndex = face.texIndex[0];
i32 textureBIndex = face.texIndex[1];
i32 textureCIndex = face.texIndex[2];
i32 uv1Index = face.texIndex[0];
i32 uv2Index = face.texIndex[1];
i32 uv3Index = face.texIndex[2];
DqnV2 uv1 = mesh->texUV[textureAIndex].xy;
DqnV2 uv2 = mesh->texUV[textureBIndex].xy;
DqnV2 uv3 = mesh->texUV[textureCIndex].xy;
DQN_ASSERT(textureAIndex < (i32)mesh->numTexUV);
DQN_ASSERT(textureBIndex < (i32)mesh->numTexUV);
DQN_ASSERT(textureCIndex < (i32)mesh->numTexUV);
DQN_ASSERT(uv1Index < (i32)mesh->numTexUV);
DQN_ASSERT(uv2Index < (i32)mesh->numTexUV);
DQN_ASSERT(uv3Index < (i32)mesh->numTexUV);
DqnV2 uv1 = mesh->texUV[uv1Index].xy;
DqnV2 uv2 = mesh->texUV[uv2Index].xy;
DqnV2 uv3 = mesh->texUV[uv3Index].xy;
bool DEBUG_SIMPLE_MODE = false;
DqnV4 modelCol = DqnV4_1f(1);