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path: root/source/blender/compositor/operations/COM_MapUVOperation.cpp
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Diffstat (limited to 'source/blender/compositor/operations/COM_MapUVOperation.cpp')
-rw-r--r--source/blender/compositor/operations/COM_MapUVOperation.cpp267
1 files changed, 139 insertions, 128 deletions
diff --git a/source/blender/compositor/operations/COM_MapUVOperation.cpp b/source/blender/compositor/operations/COM_MapUVOperation.cpp
index 3dbf4db5280..98b5b650cb9 100644
--- a/source/blender/compositor/operations/COM_MapUVOperation.cpp
+++ b/source/blender/compositor/operations/COM_MapUVOperation.cpp
@@ -21,153 +21,164 @@
MapUVOperation::MapUVOperation() : NodeOperation()
{
- this->addInputSocket(COM_DT_COLOR, COM_SC_NO_RESIZE);
- this->addInputSocket(COM_DT_VECTOR);
- this->addOutputSocket(COM_DT_COLOR);
- this->m_alpha = 0.0f;
- this->setComplex(true);
- setResolutionInputSocketIndex(1);
-
- this->m_inputUVProgram = NULL;
- this->m_inputColorProgram = NULL;
+ this->addInputSocket(COM_DT_COLOR, COM_SC_NO_RESIZE);
+ this->addInputSocket(COM_DT_VECTOR);
+ this->addOutputSocket(COM_DT_COLOR);
+ this->m_alpha = 0.0f;
+ this->setComplex(true);
+ setResolutionInputSocketIndex(1);
+
+ this->m_inputUVProgram = NULL;
+ this->m_inputColorProgram = NULL;
}
void MapUVOperation::initExecution()
{
- this->m_inputColorProgram = this->getInputSocketReader(0);
- this->m_inputUVProgram = this->getInputSocketReader(1);
+ this->m_inputColorProgram = this->getInputSocketReader(0);
+ this->m_inputUVProgram = this->getInputSocketReader(1);
}
-void MapUVOperation::executePixelSampled(float output[4], float x, float y, PixelSampler /*sampler*/)
+void MapUVOperation::executePixelSampled(float output[4],
+ float x,
+ float y,
+ PixelSampler /*sampler*/)
{
- float xy[2] = { x, y };
- float uv[2], deriv[2][2], alpha;
-
- pixelTransform(xy, uv, deriv, alpha);
- if (alpha == 0.0f) {
- zero_v4(output);
- return;
- }
-
- /* EWA filtering */
- this->m_inputColorProgram->readFiltered(output, uv[0], uv[1], deriv[0], deriv[1]);
-
- /* UV to alpha threshold */
- const float threshold = this->m_alpha * 0.05f;
- /* XXX alpha threshold is used to fade out pixels on boundaries with invalid derivatives.
- * this calculation is not very well defined, should be looked into if it becomes a problem ...
- */
- float du = len_v2(deriv[0]);
- float dv = len_v2(deriv[1]);
- float factor = 1.0f - threshold * (du / m_inputColorProgram->getWidth() + dv / m_inputColorProgram->getHeight());
- if (factor < 0.0f) alpha = 0.0f;
- else alpha *= factor;
-
- /* "premul" */
- if (alpha < 1.0f) {
- mul_v4_fl(output, alpha);
- }
+ float xy[2] = {x, y};
+ float uv[2], deriv[2][2], alpha;
+
+ pixelTransform(xy, uv, deriv, alpha);
+ if (alpha == 0.0f) {
+ zero_v4(output);
+ return;
+ }
+
+ /* EWA filtering */
+ this->m_inputColorProgram->readFiltered(output, uv[0], uv[1], deriv[0], deriv[1]);
+
+ /* UV to alpha threshold */
+ const float threshold = this->m_alpha * 0.05f;
+ /* XXX alpha threshold is used to fade out pixels on boundaries with invalid derivatives.
+ * this calculation is not very well defined, should be looked into if it becomes a problem ...
+ */
+ float du = len_v2(deriv[0]);
+ float dv = len_v2(deriv[1]);
+ float factor = 1.0f - threshold * (du / m_inputColorProgram->getWidth() +
+ dv / m_inputColorProgram->getHeight());
+ if (factor < 0.0f)
+ alpha = 0.0f;
+ else
+ alpha *= factor;
+
+ /* "premul" */
+ if (alpha < 1.0f) {
+ mul_v4_fl(output, alpha);
+ }
}
bool MapUVOperation::read_uv(float x, float y, float &r_u, float &r_v, float &r_alpha)
{
- float width = m_inputUVProgram->getWidth();
- float height = m_inputUVProgram->getHeight();
- if (x < 0.0f || x >= width || y < 0.0f || y >= height) {
- r_u = 0.0f;
- r_v = 0.0f;
- r_alpha = 0.0f;
- return false;
- }
- else {
- float vector[3];
- m_inputUVProgram->readSampled(vector, x, y, COM_PS_BILINEAR);
- r_u = vector[0] * m_inputColorProgram->getWidth();
- r_v = vector[1] * m_inputColorProgram->getHeight();
- r_alpha = vector[2];
- return true;
- }
+ float width = m_inputUVProgram->getWidth();
+ float height = m_inputUVProgram->getHeight();
+ if (x < 0.0f || x >= width || y < 0.0f || y >= height) {
+ r_u = 0.0f;
+ r_v = 0.0f;
+ r_alpha = 0.0f;
+ return false;
+ }
+ else {
+ float vector[3];
+ m_inputUVProgram->readSampled(vector, x, y, COM_PS_BILINEAR);
+ r_u = vector[0] * m_inputColorProgram->getWidth();
+ r_v = vector[1] * m_inputColorProgram->getHeight();
+ r_alpha = vector[2];
+ return true;
+ }
}
-void MapUVOperation::pixelTransform(const float xy[2], float r_uv[2], float r_deriv[2][2], float &r_alpha)
+void MapUVOperation::pixelTransform(const float xy[2],
+ float r_uv[2],
+ float r_deriv[2][2],
+ float &r_alpha)
{
- float uv[2], alpha; /* temporary variables for derivative estimation */
- int num;
-
- read_uv(xy[0], xy[1], r_uv[0], r_uv[1], r_alpha);
-
- /* Estimate partial derivatives using 1-pixel offsets */
- const float epsilon[2] = { 1.0f, 1.0f };
-
- zero_v2(r_deriv[0]);
- zero_v2(r_deriv[1]);
-
- num = 0;
- if (read_uv(xy[0] + epsilon[0], xy[1], uv[0], uv[1], alpha)) {
- r_deriv[0][0] += uv[0] - r_uv[0];
- r_deriv[1][0] += uv[1] - r_uv[1];
- ++num;
- }
- if (read_uv(xy[0] - epsilon[0], xy[1], uv[0], uv[1], alpha)) {
- r_deriv[0][0] += r_uv[0] - uv[0];
- r_deriv[1][0] += r_uv[1] - uv[1];
- ++num;
- }
- if (num > 0) {
- float numinv = 1.0f / (float)num;
- r_deriv[0][0] *= numinv;
- r_deriv[1][0] *= numinv;
- }
-
- num = 0;
- if (read_uv(xy[0], xy[1] + epsilon[1], uv[0], uv[1], alpha)) {
- r_deriv[0][1] += uv[0] - r_uv[0];
- r_deriv[1][1] += uv[1] - r_uv[1];
- ++num;
- }
- if (read_uv(xy[0], xy[1] - epsilon[1], uv[0], uv[1], alpha)) {
- r_deriv[0][1] += r_uv[0] - uv[0];
- r_deriv[1][1] += r_uv[1] - uv[1];
- ++num;
- }
- if (num > 0) {
- float numinv = 1.0f / (float)num;
- r_deriv[0][1] *= numinv;
- r_deriv[1][1] *= numinv;
- }
+ float uv[2], alpha; /* temporary variables for derivative estimation */
+ int num;
+
+ read_uv(xy[0], xy[1], r_uv[0], r_uv[1], r_alpha);
+
+ /* Estimate partial derivatives using 1-pixel offsets */
+ const float epsilon[2] = {1.0f, 1.0f};
+
+ zero_v2(r_deriv[0]);
+ zero_v2(r_deriv[1]);
+
+ num = 0;
+ if (read_uv(xy[0] + epsilon[0], xy[1], uv[0], uv[1], alpha)) {
+ r_deriv[0][0] += uv[0] - r_uv[0];
+ r_deriv[1][0] += uv[1] - r_uv[1];
+ ++num;
+ }
+ if (read_uv(xy[0] - epsilon[0], xy[1], uv[0], uv[1], alpha)) {
+ r_deriv[0][0] += r_uv[0] - uv[0];
+ r_deriv[1][0] += r_uv[1] - uv[1];
+ ++num;
+ }
+ if (num > 0) {
+ float numinv = 1.0f / (float)num;
+ r_deriv[0][0] *= numinv;
+ r_deriv[1][0] *= numinv;
+ }
+
+ num = 0;
+ if (read_uv(xy[0], xy[1] + epsilon[1], uv[0], uv[1], alpha)) {
+ r_deriv[0][1] += uv[0] - r_uv[0];
+ r_deriv[1][1] += uv[1] - r_uv[1];
+ ++num;
+ }
+ if (read_uv(xy[0], xy[1] - epsilon[1], uv[0], uv[1], alpha)) {
+ r_deriv[0][1] += r_uv[0] - uv[0];
+ r_deriv[1][1] += r_uv[1] - uv[1];
+ ++num;
+ }
+ if (num > 0) {
+ float numinv = 1.0f / (float)num;
+ r_deriv[0][1] *= numinv;
+ r_deriv[1][1] *= numinv;
+ }
}
void MapUVOperation::deinitExecution()
{
- this->m_inputUVProgram = NULL;
- this->m_inputColorProgram = NULL;
+ this->m_inputUVProgram = NULL;
+ this->m_inputColorProgram = NULL;
}
-bool MapUVOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
+bool MapUVOperation::determineDependingAreaOfInterest(rcti *input,
+ ReadBufferOperation *readOperation,
+ rcti *output)
{
- rcti colorInput;
- rcti uvInput;
- NodeOperation *operation = NULL;
-
- /* the uv buffer only needs a 3x3 buffer. The image needs whole buffer */
-
- operation = getInputOperation(0);
- colorInput.xmax = operation->getWidth();
- colorInput.xmin = 0;
- colorInput.ymax = operation->getHeight();
- colorInput.ymin = 0;
- if (operation->determineDependingAreaOfInterest(&colorInput, readOperation, output)) {
- return true;
- }
-
- operation = getInputOperation(1);
- uvInput.xmax = input->xmax + 1;
- uvInput.xmin = input->xmin - 1;
- uvInput.ymax = input->ymax + 1;
- uvInput.ymin = input->ymin - 1;
- if (operation->determineDependingAreaOfInterest(&uvInput, readOperation, output)) {
- return true;
- }
-
- return false;
+ rcti colorInput;
+ rcti uvInput;
+ NodeOperation *operation = NULL;
+
+ /* the uv buffer only needs a 3x3 buffer. The image needs whole buffer */
+
+ operation = getInputOperation(0);
+ colorInput.xmax = operation->getWidth();
+ colorInput.xmin = 0;
+ colorInput.ymax = operation->getHeight();
+ colorInput.ymin = 0;
+ if (operation->determineDependingAreaOfInterest(&colorInput, readOperation, output)) {
+ return true;
+ }
+
+ operation = getInputOperation(1);
+ uvInput.xmax = input->xmax + 1;
+ uvInput.xmin = input->xmin - 1;
+ uvInput.ymax = input->ymax + 1;
+ uvInput.ymin = input->ymin - 1;
+ if (operation->determineDependingAreaOfInterest(&uvInput, readOperation, output)) {
+ return true;
+ }
+
+ return false;
}
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